71results about How to "Will not pollute" patented technology

The utility model discloses a hydrochloric acid ammonia gas corrosion test case relates to test case technical field, including test case main part, support seat, waste gas treatment tank, support seat top both sides are connected with test case main part and waste gas treatment tank respectively. The utility model discloses a ammonia gas injection pipe and hydrochloric acid injection pipe inject proper amount of ammonia gas and hydrochloric acid gas into test case main part, wherein the hydrochloric acid conduit and ammonia gas exhaust pipe correspondingly connected of ammonia gas injection pipe and hydrochloric acid injection pipe are upside down distribution in test case main part, are favorable to the full mixing of hydrochloric acid gas and the ammonia gas below, form even corrosive gas environment, this can ensure that the corrosion effect that each part in test case receives is more consistent, thereby obtains accurate test result, wherein the test case main part inner wall has been daubed anticorrosive layer coating), can effectively prevent the corrosion of hydrochloric acid and ammonia gas to test case main part inner wall.

The utility model discloses a nitric acid preparation device for simulating an early atmospheric photochemical reaction of the earth. The nitric acid preparation device comprises an ultraviolet photochemical reaction system, a reaction gas source feeding system, a water vapor generator and a nitric acid freezing collector, the ultraviolet photochemical reaction system comprises an ultraviolet light source and a reaction chamber, and the ultraviolet light source is used for providing ultraviolet light required by reaction into the reaction chamber; the reaction gas source supply system is communicated with the reaction chamber and is used for supplying gas required for generating nitric acid through ultraviolet light chemical reaction into the reaction chamber; the water vapor generator is used for providing water vapor for the reaction chamber; the water vapor generator is connected with the reaction chamber; the nitric acid freezing collector is connected with the reaction chamber and is used for collecting nitric acid generated by photochemical reaction in the reaction chamber. The utility model realizes the preparation of nitric acid by simulating the early atmospheric photochemical reaction of the earth.

The utility model provides a waterproof and drop-resistant express bag convenient for secondary use. The waterproof and drop-resistant express bag comprises a paper bag body with a bag opening and a tongue opening used for sealing the bag opening, folding handles which can be movably turned out of a bag opening are arranged on the two sides in the paper bag body; the section of the paper bag body sequentially comprises a first functional layer, a paper base material layer and a second functional layer from inside to outside, and the second functional layer is a waterproof layer. The express bag has the advantages that the paper base material layer is matched with the second functional layer, so that the waterproof and anti-falling performance of the express bag can be effectively improved, and the express bag is not prone to being abraded and damaged in the transportation process or in cloudy and rainy days; and meanwhile, after the bag opening is opened to take out the express, the folding handle can be turned out of the bag opening to form a hand bag, so that secondary use of the express bag can be well realized, and resource waste is avoided.

The invention belongs to the technical field of chip testing, and particularly discloses a chip testing notch, a chip testing device and a chip testing system, and the chip testing notch, the chip testing device and the chip testing system are used for allowing a chip testing clamp to be inserted to test a chip. The test plate is arranged above the heating plate, a test station for accommodating the chip test clamp is formed between the test plate and the heating plate, and at least one reed is arranged at the position, opposite to the test station, of the test plate; wherein when the chip test fixture is placed at the test station, the reed is elastically crimped on a test contact on the upper surface of the chip test fixture. The chip test fixture can solve the problem that the probe is easy to damage when the current chip test fixture is plugged in and pulled out of the drawer, and is suitable for automatic aging test, so that the aging test efficiency is improved, and the safety and reliability of the test process are guaranteed.

The present application relates to the technical field of fertilizer, in particular to an organic leaf fertilizer and a production method thereof.The present application solves the problems of poor fertilizer efficiency and easy damage to soil structure.The present application improves the soil organic matter content of the organic leaf fertilizer by changing the dosage of kelp, the temperature and time of ultrasonic and the dosage of kelp extract; improves the relative content of plant chlorophyll of the organic leaf fertilizer by changing the dosage of earthworms, trypsin and amino acid extract; improves the soil porosity of the organic leaf fertilizer and reduces the soil bulk density by changing the dosage of shrimp shells, the temperature of removing protein and the dosage of chitosan extract; increases the plant leaf thickness of the organic leaf fertilizer by changing the dosage of straw and the dosage of cellulose extract; and improves the fertilizer utilization rate of the organic leaf fertilizer by changing the temperature and time of stirring and the time of emulsification and grinding.

This invention relates to the fields of optical fiber communication networks, digital information transmission, optical fiber broadband operation services, next-generation information networks, network resource management, IoT sensing, and industrial internet operation and maintenance technologies, and particularly to an intelligent management method and system for optical fiber communication cabling. The method establishes a formal cabling resource model, a shadow cabling buffer, and a conflict sampling strategy table. After a change in the plugging status of an optical fiber cabling port, it collects port status data, jumper end identification data, optical link quality data, and service resource constraint data to generate an initial cabling evidence set and establish a shadow cabling relationship. When the identification, link, time, and resource evidence are inconsistent, an evidence conflict type is generated. Secondary verification data is collected according to the corresponding secondary sampling path, and the credibility level is reconstructed to generate a credible cabling result, a cabling result pending verification, or a conflict cabling result. These results are then written into the formal cabling resource model or the corresponding status is frozen to improve the accuracy of optical fiber cabling resource management.

The utility model belongs to solid waste base cementitious material processing technical field, specifically disclose a kind of solid waste base cementitious material powder grinding device, including bottom plate, the bottom plate upper end one side is connected with first support plate, first support plate one side upper portion is connected with feed pipe, feed pipe one end is extended to first support plate one side, first support plate is opened with rolling mouth at the place corresponding feed pipe, feed pipe is located inside rotation of rolling mouth, the outer wall one side of feed pipe is connected with stabilizing plate, stabilizing plate one side is connected with outer tube, the utility model is structured design by double layer powder grinding, strong magnetic iron removal, convenient cleaning etc., realize that powder grinding efficiency and quality promotion, iron impurity efficient removal, maintenance convenient and cost reduction, and structure stable adaptability is strong.

The invention relates to the technical field of construction engineering foundation treatment, in particular to a foundation structure based on a high-saturation brine crystallization technology and a construction method of the foundation structure. The foundation structure comprises a basic primary salt rock bearing layer, a bottom framework cementing layer and a surface sand gravel compensation layer. As the magmatic rocks are very hard, high in density and enough in salt lake chemical environment resistance, the magmatic rocks are directly put into a hypersalinity brine area to form a rigid framework, framework building-in, gap filling and overall cementing are achieved through natural crystallization of salt lake hypersalinity brine, and a core rigid framework of the foundation is formed; the structure can be connected with a primary salt rock bearing layer of a lower foundation to form a stress transmission system, can resist soaking erosion caused by conventional fluctuation of the brine water level, has anti-floating and anti-seepage dual performance, can improve the foundation bearing capacity and the anti-settling capacity, and enables a building newly built on a salt lake to be more stable. Meanwhile, the magmatic rocks are natural materials, so that the salt lake environment is not polluted, and the environmental protection property is good.

The utility model discloses a sealant storage device which comprises a storage box. A discharging screw rod is arranged in the middle of the storage box, an inner sealing groove is fixedly connected to the middle of the bottom surface of the storage box, and a discharging opening is fixedly connected to the lower end of the inner sealing groove; wherein the middle of the limiting groove is slidably connected with a lifting rod, the bottom of the lifting rod is fixedly connected with an inner sealing plug, the middle of the inner sealing plug is provided with a positioning block, the top end of the lifting rod is rotatably connected with a first connecting seat, and the middle of the first connecting seat is in threaded connection with an opening and closing screw rod; wherein a sliding rod is slidably connected to the middle of the lifting rod, an outer sealing plug is fixedly connected to the bottom of the sliding rod, a guide rod is slidably connected to one side of the lower end of the sliding rod, and a guide block is slidably connected to one side of the guide rod. The residue of the sealant at the discharge hole is conveniently reduced, and the secondary sealing effect is achieved.

This utility model relates to the field of duckweed containment technology in waterways, and discloses a containment rope float suitable for fish spawning. It includes a containment rope made of first bundled reed stalks, with several reed balls made of second bundled reed stalks evenly distributed on the containment rope; each reed ball is filled with palm leaves; both ends of the containment rope are secured with ropes, and the other end of each rope is secured with a ground stake inserted into the riverbank. The advantages of this utility model compared to existing technologies are: it can contain duckweed on the water surface; the containment device decomposes quickly after disposal, does not pollute the environment, and provides a breeding environment for fish.

The application discloses a raw material mixing device for photoresist production and processing, which can not introduce pollution sources, ensure that the last batch of residues do not affect the precision of the next batch, and ensure that the raw materials can be fully mixed and dissolved without causing the molecular chain of the raw materials to break. The application adopts a mixing main pipe with a two-dimensional / three-dimensional wave-shaped mixing and dissolving section. Upstream connecting liquid inlet pipes and slurry inlet pipes are respectively connected with quantitative liquid raw materials and solid slurry. The mixing and dissolving section uniformly distributes multiple uniform mixing lifting units, including a dome-shaped protruding part, a stud in line with the protruding part, a reset elastic element and a locking mechanism. In the mixing stage, the stud is locked, and the protruding part is tightly attached to the inner wall of the main pipe. In the cleaning stage, the locking is released, the liquid flow impacts the spiral protruding ribs to drive the protruding part to rotate and axially displace, the reset elastic element accumulates potential energy, and the liquid flow stops and reverses back to the original position.

The utility model relates to medical appliance technical field, specifically disclose a kind of gastric tube nasal feeding medicine dissolving device, including base, and the positioning seat is equipped in base upside, and the vertical groove is equipped in positioning seat, and cup body is positioned and placed in groove, and the detachable cover is fixed in cup body top, and the vertical pipe is vertically installed in cover, and the suction pump mechanism matched with vertical pipe is equipped in base side edge, and the automatic stirring mechanism and heating insulation mechanism matched with cup body are equipped in positioning seat, and the medicine adding mechanism is equipped in cover. The utility model can realize the mixing operation of high efficiency, effectively improve the dissolving efficiency of gastric tube nasal feeding medicine, effectively avoid liquid medicine long time exposure in air at the same time, ensure treatment effect and medicine safety.

The application provides an animal tissue sampling device and belongs to the technical field of cell culture. The technical scheme is as follows: a base and a sampling mechanism arranged on the base, the base is provided with an operation sleeve through a pair of inverted L-shaped supporting rods, the sampling mechanism is movably arranged in the operation sleeve, the sampling mechanism comprises a fixing frame movably arranged in the operation sleeve, the fixing frame is provided with an outer sampling sleeve, the fixing frame comprises a U-shaped handle, the U-shaped handle is respectively provided with a first fixing cylinder and a second fixing cylinder at both ends, and the outer sampling sleeve is arranged between the first fixing cylinder and the second fixing cylinder. The application has the advantages of simple structure, convenient use, fast sampling, great guarantee of sample pollution, and improved efficiency and quality of scientific research.

This invention discloses a machine vision-based weld defect detection device for mechanical manufacturing welded parts, including a worktable, a camera mounted on a support, an image processing device mounted on the front of the top of the worktable, a cleaning mechanism mounted on a U-shaped frame, a water tank mounted on the top surface of the U-shaped frame with a mixing mechanism inside, a cleaning mechanism mounted on a second U-shaped frame, a fixing mechanism on the top surface of a second connecting rod, a connecting block fixed to the bottom of the second connecting rod, a servo motor mounted on the side of the worktable, and a drive mechanism mounted on the output shaft of the servo motor. This invention utilizes the coordinated use of adjusting component one, adjusting component two, the drive mechanism, the cleaning mechanism, and the tilting mechanism to first bring the welded part into contact with the grinding block, facilitating the removal of residual weld slag, spatter, and oxide scale from the weld seam. This prevents residual weld slag, spatter, and oxide scale from obscuring weld defects and improves the accuracy of weld seam detection.

This invention discloses a Litsea cubeba essential oil preparation, which is prepared by mixing a 1% (w / w) chitosan quaternary ammonium salt solution with a Litsea cubeba essential oil ethanol mixture at a volume ratio of 4:1; the volume ratio of Litsea cubeba essential oil to anhydrous ethanol in the Litsea cubeba essential oil ethanol mixture is 2:3. The Litsea cubeba essential oil preparation prepared by this invention exhibits good dispersibility and stability, achieving 100% short-term and long-term antibacterial effect against Aspergillus flavus. This is significantly superior to using Litsea cubeba essential oil or chitosan quaternary ammonium salt alone, as well as other chitosan quaternary ammonium salt-Litsea cubeba essential oil preparations, and even more superior to commonly available antifungal agents. Its preparation method is simple, non-toxic, harmless, and does not pollute the environment. It has low production costs and can be used to prevent or inhibit the growth of Aspergillus flavus, reducing its damage to wooden household products.

The application provides a cation exchange membrane and a preparation method and application thereof, and belongs to the technical field of cation exchange membranes.The method provided by the application is free of volatile organic compounds, toxic and harmful monomers or heavy metal components, and the raw material itself is environmentally friendly.The method is free of harmful gas emission and hazardous waste generation, and is environmentally friendly.The cation exchange membrane material prepared by the method is chemically stable, easy to recycle after being discarded, free of additive precipitation during use, and free of pollution to the treatment system.The water-soluble dispersion bonding medium adopted by the application forms rich and uniform connected pore structures in the cation exchange membrane after being washed by water, greatly reduces ion migration resistance, significantly alleviates membrane polarization, and improves ion exchange rate and energy utilization efficiency when used for separation.The method provided by the application is free of complex chemical reactions, harsh process conditions, and standardized operation steps, and is easy to realize large-scale continuous production.

The utility model provides a preheating type multi-layer continuous compound machine which comprises a base, a plurality of compound units are sequentially stacked at the upper end of the base, each compound unit comprises a frame, a heating roller and a pressing roller are arranged in each frame and are arranged up and down, a fire grate is arranged at one end of each heating roller, and a plurality of fire grate bodies are arranged at the other end of each heating roller. A heating roller is arranged on one side of the pressing roller, a fire row is arranged on the other side of the pressing roller and extends into the heating roller, a preheating roller is arranged on one side of the heating roller, a third guide roller is arranged below the preheating roller, and a first guide roller and a second guide roller are arranged on one side of the preheating roller up and down. One end of the heating roller is fixedly connected with a second gear, the first gear and the second gear are meshed with each other, and the first gear and the second gear which are adjacent in the stacked composite units are meshed with each other. According to the invention, a plurality of compounding units can be stacked, so that the compounding of a plurality of layers of fabrics is met.

This invention relates to a vacuum preloading device and method for reinforcing soft soil foundations using a floating raft cushion. The reinforcement device includes a sealing wall surrounding the soft soil foundation, with a floating raft cushion covering the soft soil foundation within the sealing wall. A drainage board is installed below the floating raft cushion, vertically inserted into the soft soil foundation with its upper end penetrating into the floating raft cushion. A vacuum sealing membrane covers the floating raft cushion, and a vacuum loading system is connected to the outside of the floating raft cushion. The vacuum loading system generates a vacuum negative pressure within the floating raft cushion to draw water from the soft soil foundation through the drainage board. This reinforcement device can be used on general soft soil foundations, extremely soft soil foundations, and suspended silt foundations. The construction process does not require the accumulation of large amounts of sand cushion layers, and reinforcement can be completed without multiple treatments, saving a significant amount of sand resources. It provides good preloading effect, a short construction cycle, and high efficiency. Furthermore, the floating raft cushion can be reused without damaging or polluting the environment, thus reducing construction costs and effectively protecting the environment.

This invention discloses a method for preparing a flame-retardant epoxy resin containing a recyclable flame retardant and its application. The method for preparing the flame retardant includes: preparing a manganese cobalt oxide flame retardant through the co-precipitation of manganese and cobalt ions followed by calcination. This invention synthesizes a manganese cobalt oxide flame retardant via a co-precipitation method and uses it as a filler in epoxy resin, curing it to obtain a green, halogen-free, environmentally friendly flame-retardant epoxy resin. It does not pollute the environment during pyrolysis or combustion and can effectively catalyze the conversion of harmful gases generated during combustion, which is beneficial to environmental protection and sustainable development. It has excellent flame-retardant properties, greatly reducing the release of heat, smoke, and harmful gases during epoxy resin combustion, significantly enhancing its fire safety. Furthermore, it enables efficient recovery of the flame retardant from the epoxy resin, with a recovery rate of up to 90.0%, achieving high-quality resource utilization.

This utility model discloses a surgical support frame with easy height adjustment, including a vertical tube, a base fixed to the bottom end of the vertical tube, a lifting rod inserted inside the vertical tube, a piston fixed to the bottom end of the lifting rod, a support plate set at the top end of the lifting rod, an air-blowing assembly fixed inside the base, and an exhaust assembly set on one outer wall of the base. The air-blowing assembly includes a cylinder embedded inside the base, a piston set inside the cylinder, and a pressing column fixed to the top end of the piston. This utility model uses the air-blowing assembly to inflate the vertical tube, thereby causing the piston to raise the vertical rod and the support plate at its top. The exhaust assembly can expel the air inside the vertical tube, causing the support plate to lower. This allows medical staff to adjust the height of the support plate with their feet, eliminating the need for hand adjustment and preventing hand contamination during the adjustment process, thus achieving a more convenient height adjustment of the support frame.

This utility model discloses an in vitro culture device for tissue-engineered ligaments simulating an abdominal pressure biomechanical environment. The device comprises an outer box and a culture mechanism located within the outer box. The top plate of the outer box is provided with multiple arrayed double-sided hydrophobic PTEE filter membranes, and needle-type gas filters are also provided at the four corners of the top plate. A lid is provided at the opening of the outer box. The culture mechanism includes a base, on which a weighing device and a support plate are mounted. A motor is mounted on the top of the support plate, and the working end of the motor is connected to a turntable. A connecting shaft is located at the eccentric position of the turntable, and the connecting shaft is rotatably connected to the top end of a linkage component. The bottom end of the linkage component is hinged to the top end of a drive rod. The drive rod is movably connected within a guide sleeve fixed to the support plate, and the bottom end of the drive rod is fixedly connected to a drive shaft. An elastic pressure block is connected to the bottom end of the drive shaft.

This utility model discloses a clinical urine collection device, including a device frame, a urine storage bucket, a urine collection trough, a urine collection basin, and a main pipe. The urine storage bucket is disposed inside the device frame. A urine sample tube is disposed on one side of the device frame. The main pipe is disposed above the urine storage bucket. A secondary pipe is disposed above the urine sample tube. A catheter is installed between the secondary pipe and the main pipe. A rotating rod is disposed below the catheter, with one end of the rotating rod extending into the interior of the main pipe and fitted with a second sealing plate. The other end of the rotating rod passes through the secondary pipe, and a first sealing plate is fixed to the outer wall of the rotating rod at the location of the secondary pipe. The urine collection trough is fixed to the top of the device frame, and the urine collection basin is disposed inside the urine collection trough. This utility model not only facilitates the collection of midstream urine, preventing urine sample contamination, but also avoids hand contamination and urine spillage, making it convenient and hygienic to operate.

The utility model relates to the field of highway engineering environmental protection technology, and disclose a kind of road surface runoff emergency collection linkage device, the road surface runoff emergency collection linkage device, including foundation, its foundation is built with highway, the both sides of the highway are provided with runoff collection system, the side of the highway is provided with water quality detection pool, two the runoff collection system is connected with the water quality detection pool, the side of the highway is provided with emergency pool and multistage sedimentation tank;The side of the water quality detection pool is equipped with liquid outlet pipe, and one end of the liquid outlet pipe is equipped with a three-way valve;The device is monitored by intelligent identification when using dangerous chemical vehicle, in combination with the real-time monitoring of water quality detection pool, can quickly respond to dangerous chemical leakage accident, automatically introduce the leakage of easily polluting environment into emergency pool, avoid polluting surrounding environment, especially suitable for the section of ecological sensitive area.

The application discloses a combined modular determination device for casting aluminum alloy casting heat exchange coefficient and a data rapid acquisition method, which can simultaneously acquire multiple heat exchange coefficients of cavity and core materials, and through the combined modularization of used materials, each to-be-tested material is separated by an adiabatic layer and is combined with stable structure through shape design. The modular structure comprises different size metal type / non-metal type modules and chilling modules. Each module can be replaced according to the used materials of the cavity and the core. The application can integrate multiple casting environments, and can be conveniently adjusted according to the corresponding environment, and simultaneously acquire the heat exchange coefficients under multiple environments, thereby shortening the determination time of the heat exchange coefficients and improving the work efficiency.

The application belongs to the technical field of solar photovoltaic materials, and particularly discloses a preparation method of phosphorus-doped silicon master alloy. A double-temperature-zone horizontal furnace is used, and zinc phosphide is used as a dopant. A sealed quartz horizontal ampoule is arranged in the double-temperature-zone horizontal furnace. A graphite boat is arranged in the high-temperature section of the quartz horizontal ampoule, and polycrystalline silicon material is arranged in the graphite boat. A quartz crucible is arranged in the low-temperature section, and zinc phosphide is arranged in the quartz crucible. Different temperatures of the high-temperature section and the low-temperature section are set, and the temperature is kept for a period of time, and then the temperature is reduced to obtain the phosphorus-doped silicon master alloy. The speed of synthesizing the phosphorus-doped silicon master alloy is fast, the method is safe and reliable, the requirement for equipment is low, and the manufacturing cost of the phosphorus-doped silicon master alloy is greatly reduced.

The utility model discloses a device for measuring sound velocity in a middle-high pressure hydraulic pipeline, which relates to the technical field of measuring devices and comprises a driving shaft, a rotary valve, a transition end cover, a hydraulic pipeline, a first fiber bragg grating sensor and a second fiber bragg grating sensor. An axial output port of the rotary valve is connected with a transition end cover, and the transition end cover is connected with a hydraulic pipeline; the front end of the hydraulic pipeline is connected with a first fiber grating sensor, and the tail end is connected with a second fiber grating sensor; the rotary valve comprises a valve cover, a valve body, and a rotary valve core and a bearing which are arranged in the valve body; the driving shaft is connected with the rotary valve element, and an explosion flushing cavity and a low-pressure cavity which are isolated from each other are formed in the rotary valve element; the blasting cavity is provided with a first conical nozzle, and the low-pressure cavity is provided with a second conical nozzle; an axial output port of the rotary valve is provided with a third conical nozzle; the transition end cover is provided with a fourth conical nozzle; measurement of the propagation sound velocity of oil in a hydraulic pipeline under a certain pressure is realized.

The application discloses a kind of northwest arid region sandy soil small crayfish breeding artificial breeding nest manufacturing method, including artificial breeding nest is formed by the stacking of multiple breeding devices, breeding device includes breeding pipe, the entrance of small crayfish is opened in the side of breeding pipe, and strip-shaped through-hole and multiple flow-through holes are provided in the length direction of breeding pipe;At least two breeding pipes are oppositely arranged, and the two ends of breeding net respectively pass through the strip-shaped through-hole of two breeding pipes, and the breeding net and breeding pipe are fixed by fixing belt;Small crayfish breeding nest is formed by stacking multiple breeding devices;Breeding device is simple to make, and production cost is low, and the structural design of breeding device is suitable for the water environment in northwest arid region, to bring good living environment for small crayfish, will not cause pollution to water environment, can create certain economic benefits for small crayfish breeder;The water retention and stability of the breeding device of the application effectively solve the problems faced by traditional nest in sandy water.

The flexible electrode polishing system comprises a connecting mechanism, a polishing mechanism, a rotating mechanism and a dust removal mechanism, the polishing mechanism comprises a rotating connector, a three-jaw chuck and at least two polishing jaws, and the polishing jaws are arranged at the bottom of the three-jaw chuck; the rotating mechanism comprises a power unit, a hollow rotating table and a connecting plate, the hollow rotating table is arranged on the connecting mechanism, the driving end of the power unit is connected with the hollow rotating table, the hollow rotating table is connected with the three-jaw chuck through the connecting plate, and the power unit drives the hollow rotating table to rotate; the dust removal mechanism is arranged on the connecting mechanism and used for removing tiny dust generated in the working process of the grinding claw. The flexible electrode polishing equipment comprises the flexible electrode polishing system, a mobile robot, a rack, a control cabinet and an electric control cabinet. The flexible electrode polishing system and equipment are simple in structure, reliable in performance and convenient to maintain, automatic operation of flexible electrode polishing can be achieved, and the working efficiency is remarkably improved.

The application relates to the technical field of battery production equipment, in particular to a detection equipment and a battery production system. The detection equipment is used for detecting dust on a silicon wafer and comprises a bearing table used for bearing the silicon wafer, a wiping assembly used for wiping a wiped area of the silicon wafer, the wiped area being located on a first surface of the silicon wafer and being smaller than the area of the first surface of the silicon wafer, and a shooting assembly used for shooting the first surface of the silicon wafer. The detection equipment provided in the application can wipe the first surface of the silicon wafer, so that the area of the silicon wafer surface with dust after wiping and the area without wiping form a color difference, thereby identifying whether the surface of the silicon wafer has dust, improving the detection efficiency of detecting the dust on the surface of the silicon wafer, guaranteeing the cleanliness of the silicon wafer, guaranteeing that the silicon wafer with dust does not contaminate other silicon wafers, and improving the yield of silicon wafer production.

The utility model relates to a kind of deviation rectifying device and feeding equipment, deviation rectifying device includes jacking mechanism and deviation rectifying plate, deviation rectifying plate is connected in jacking mechanism, jacking mechanism is used to drive deviation rectifying plate relative to carrier plate movement, deviation rectifying plate includes plate body and multiple support columns;Multiple support columns are spaced apart on the same side of plate body;Wherein, the face of support column away from plate body is provided with the same pile face layer with the surface of workpiece to be rectified.And by the face of support column away from plate body is provided with the same pile face layer with the surface of workpiece to be rectified, since the material of both is same, so that workpiece is contacted with support column, workpiece after pile making will not be damaged and contaminated, thereby effectively solve the problem of black spot and black dot caused by the position of workpiece and deviation rectifying plate contact, thereby improve the surface quality of workpiece after chemical vapor deposition process, and the electrical performance of photovoltaic cell.