54results about How to "Avoid doping" patented technology

The invention relates to the technical field of carbon capture after combustion, and discloses a carbon dioxide capture system and method based on calcium circulation and calcium-based chemical looping combustion. CaS, CaO and CaSO4 in the calcination reactor enter a carbon capture reactor, the fuel reacts with CaSO4 to generate CO2 and CaS, and CO2 in the flue gas reacts with CaO to generate CaCO3; caS and CaCO3 in the carbon capture reactor and a solid material flow which carries heat and contains CaSO4 and CaO in the air reactor respectively enter a calcination reactor, and CaCO3 is decomposed into CO2 and CaO under the action of the heat carried by the solid material flow; caS, CaSO4 and CaO in the calcination reactor are divided into two streams and enter the carbon capture reactor and the air reactor respectively, CaS and air react in the air reactor to generate CaSO4, and heat is released. According to the system, doping and dilution of CO2 product gas are avoided, and high-grade electric energy is saved.

The utility model discloses an efficient limestone powder conveying mechanism which comprises a conveying outer box. The side surface of the extension plate is fixedly connected with the front and back surfaces of the transportation outer box; the side surface of the hinge is fixedly connected with the side surface of the extension plate; the side face of the bottom end of the inclined supporting plate is fixedly connected with the side face of the hinge. According to the scheme, by arranging related structures of the extension plate, the hinge, the inclined supporting plate, the baffle and the sealing gaskets, before limestone powder is poured, the inclined supporting plate is lifted to the maximum angle, the top of the outer conveying box abuts against the middle of the side face of the inclined supporting plate, then the sealing gaskets on the two sides can be attached to each other, and then the conveying belt box is opened to start conveying; when the limestone powder is conveyed, corresponding mechanisms are used for shielding and protection, impurities and particles of other components are not prone to falling on the conveying belt in the external environment, the impurities can be prevented from being doped in the limestone powder, and therefore the subsequent quality of the limestone powder can be guaranteed when the limestone powder is used.

The utility model provides a material grinding device which comprises a grinding box, a grinding block is arranged at the top of the grinding box, a circular ring is fixedly connected to the outer side of the grinding box, a dustproof mechanism is arranged on the outer side of the grinding box, the dustproof mechanism is used for preventing external dust from being mixed with grinding materials, and the dustproof mechanism comprises a dustproof box. The grinding box and the grinding block are arranged in the dustproof box, a placing hole is formed in the front face of the dustproof box, a frame is fixedly connected to the front face of the dustproof box, a baffle is arranged on the frame, a pull block is fixedly connected to the top of the baffle, and the baffle is inserted into a first insertion hole formed in the frame. The material grinding device solves the problems that in the actual using process of an existing grinding device, a grinding box is exposed outside, when medicinal materials are ground in the grinding box, external dust and other impurities easily enter the grinding box, the medicinal materials are mixed with the dust and other impurities, and the grinding quality of the medicinal materials is reduced.

The invention discloses a large-volume injection production process based on large-scale production and concentrated preparation equipment, and relates to the technical field of medical preparation production. Step S1; weighing and burdening raw materials and auxiliary materials, preparing water for injection from drinking water, and carrying out weighing and feeding integrated treatment; s2, performing primary concentrated preparation, performing heating sterilization, and filtering a concentrated solution; s3, adding 50 DEG C water for injection into the concentrated solution to dilute the liquid medicine to a specified concentration, adjusting the pH value, and then filtering again; s4, a filling container is prepared, filling and heat sealing are conducted, and a product is sterilized; s5, after filling is completed, the whole system adopts a cleaning / drying procedure; and S6, the product is subjected to light inspection, labeling and packaging. In the whole technological process, control over the temperature, the humidity and the cleanliness is beneficial for keeping the consistency and stability of the product quality. The whole technological process design considers the requirement of large-scale production, and through automatic and continuous operation, the production efficiency and the yield are improved, and the unit cost is reduced.

The utility model discloses a translation rotary sprinkling machine, which belongs to the technical field of sprinkling machines and comprises two movable bases which are sequentially arranged from left to right. The filter assembly is arranged, the water inlet pipe is connected with the external water supply mechanism, water output by the external water supply mechanism falls onto the water guide cover through the water inlet pipe, is guided into the filter cartridge through the water guide cover, is filtered by the filter screen cartridge and then enters the connector, so that impurities are prevented from being doped in a water source provided by the external water supply mechanism; further, sundries can be prevented from entering a connector and a rotary spraying mechanism to cause blockage of the connector and the rotary spraying mechanism, and when a filter screen cylinder needs to be cleaned, the filter cylinder is held by a hand to rotate, and after an annular connecting groove in the filter cylinder is far away from a connecting cylinder on an annular plate, the filter cylinder is taken down from the annular plate; and then the filter screen cylinder is cleaned, so that the filtering effect of the filter screen cylinder is ensured.

The utility model discloses a kind of anti-blocking airflow pulverizer feed control device, it is related to airflow pulverizer technical field, including main frame, oscillation generation unit and screening discharge unit, screening discharge unit includes receiving magazine, guide block, discharge port, detachable sieve plate and guide frame.This device is driven under motor and linkage crank, pull block can continuously pull and push main frame, meet the particle of specification and pass through the round hole on detachable sieve plate and fall into the receiving magazine of downside, stick-shaped sundries and larger material particles in material are separated on detachable sieve plate upside, and then form the effect of continuous lateral shaking to main frame, by screening out larger material and sundries, it can avoid plugging when airflow pulverizer feeding, detachable sieve plate is installed and fixed by bolt, and it is convenient to disassemble to replace, to be suitable for the screening demand of different specification material particles.

The present invention relates to the field of polytetrafluoroethylene particle recovery, and in particular to a polytetrafluoroethylene particle recovery device, wherein a processing box is installed on the upper part of a machine body, the inside of the processing box is connected to a discharge pipe through a guide channel, the discharge pipe is installed in the processing box opened on one side of the machine body, a guide slope is arranged at the bottom of the processing box, a partition plate and a separation screen are respectively arranged on the upper side of the guide slope, a recovery roller mechanism is arranged on the upper side of the separation screen, and a discharge port is arranged below the separation screen. In the present invention, after the polytetrafluoroethylene particles are initially processed and crushed, they enter the processing box for cleaning operation, and during cleaning, the waste particles are screened by the separation screen and the air jet, and the particles are floated to the top and are scooped and recovered by the recovery roller mechanism, and the recovery roller mechanism is provided with a multi-stage screen and a spiral conveying mechanism, which can effectively grade, screen and convey the particles, ensure the recovery effect of the material particles, avoid impurity doping, and improve the production quality.

The utility model discloses a textile cloth roll storage device for textile production relates to textile production technical field, including first shell, second shell, collect cloth roller and drive motor, first shell one side is provided with second shell, the second shell bottom is provided with base, base bottom and second shell bottom weld, first shell one side is hinged with second shell through the hinge, first shell top is welded with the hook, drives the rotation of axle seat through drive motor, and then makes axle seat drive collect cloth roller and rotate, and then makes collect cloth roller can drive textile cloth and wind, when textile cloth is wound to the surface of collect cloth roller in the clearance of first shell and second shell one end, under the action of air pump, makes the one end of air pipe can produce suction, and then makes the dust on the surface of textile cloth can be adsorbed and cleaned, and then is favorable to the winding after the cleaning of textile cloth surface, thereby avoiding the inside of textile cloth to mix dust when placing.

The utility model discloses a blood collection pool for livestock slaughtering, which relates to the technical field of livestock slaughtering, comprises a blood collection pool body, and is characterized in that a support frame is arranged at the bottom of the blood collection pool body, a blood discharge tube is connected to the bottom end of the support frame in a penetrating manner, an electromagnetic valve is arranged on the outer side of the circumference of the blood discharge tube, and an air flow groove is formed in the inner wall of the top of the blood collection pool body; a plurality of air flow acceleration assemblies are arranged in the air flow groove, accelerated discharge of air in the air flow groove is achieved through the air flow acceleration assemblies, and exhaust fans matched with the air flow groove are arranged on the two side walls of the top of the blood collection pool body in a penetrating mode. The blood collection pool for livestock slaughtering is reasonable and reliable in structure and easy to operate, dust or flies in air sucked into the airflow groove can be discharged in an accelerated mode, and therefore the sanitary efficiency of the blood collection pool for livestock slaughtering is improved, and the dust or flies in the air are prevented from polluting blood in the blood collection pool.

The utility model belongs to the technical field of waste forsterite powder processing, and particularly relates to a waste forsterite powder fine grinding device which comprises a shell barrel, an opening in the upper side of the shell barrel, a motor arranged at the bottom of the inner side of the shell barrel, a shaft rod arranged at the output end of the motor, a connecting disc arranged at the upper end of the shaft rod and a grinding disc arranged on the upper side of the connecting disc. A shell top ring is arranged on the upper side of the shell cylinder, a transverse rod is arranged on the inner side of the shell top ring, an electric hydraulic rod is arranged on the upper side of the transverse rod, and the output end of the electric hydraulic rod penetrates through the transverse rod to the lower side and is provided with a pressing disc. In the fine grinding process, a large number of black attachments can be ground out firstly, then the checker brick is finely ground into powder gradually, forsterite powder and black attachment powder can be effectively separated conveniently, and the situation that the processing and recycling quality is reduced due to doping of the black attachments is avoided.

The alkaline electrolyzed water coating die head comprises an upper die, a lower die and a gasket which is located between the upper die and the lower die and used for adjusting the thickness, the upper die, the lower die and the gasket are connected into a whole through a die locking screw, a die lip and a die lip gap adjusting mechanism are arranged at the front end of the upper die, and an extrusion channel is formed between the front portions of the upper die and the lower die. The die is characterized in that the lower die is provided with a feeding channel, the rear end of the feeding channel penetrates through the rear side face of the lower die, a first-stage buffer groove is formed in the top face of the front portion of the lower die in the breadth direction, and the bottom of the first-stage buffer groove is communicated with the front end of the feeding channel; an exhaust hole is vertically formed in the upper die above the first-stage buffer groove in a penetrating manner, and a second-stage buffer groove arranged in the breadth direction is formed in the top surface, located on the front side of the first-stage buffer groove, of the lower die. The coating thickness precision of the extrusion channel in different breadth directions can be guaranteed, air mixed in raw materials is discharged, and bubbles are eliminated.

The utility model discloses a mining positive pressure air distribution device, which belongs to the technical field of coal mines and comprises a main delivery pipe, a flange plate is fixedly mounted at the bottom end of the main delivery pipe, a five-way pipe is mounted at the top end of the main delivery pipe in a communicated manner, and telescopic hoses are mounted at the other ends of the five-way pipe in a communicated manner. An auxiliary conveying pipe is installed at the end, away from the five-way pipe, of the telescopic hose in a communicating mode, and a fixing base and two fixing blocks are fixedly installed on the outer surface of the main conveying pipe. The main conveying pipe, the five-way pipe, the telescopic hose and the auxiliary conveying pipe are used in cooperation, the main conveying pipe communicates with an air outlet of a fan through a flange plate, the five-way pipe is matched with the auxiliary conveying pipe to achieve multi-direction air distribution operation, a lead screw is used in cooperation with a connecting arm and a sliding base, and swinging of the auxiliary conveying pipe can be achieved under the action of a rack plate and a gear; therefore, multi-direction and multi-angle air distribution operation is achieved, and when the draught fan works, air can be rapidly distributed in a mine pit operation area.

The present invention discloses a silicon electrode pore etching device, including a jig assembly with an acid liquid circulation structure, a clamping device is arranged inside the jig assembly, a multi-layer diverter plate is clamped inside the clamping device, a silicon electrode pressing groove is arranged on the clamping device above the multi-layer diverter plate; a plurality of liquid holes connected to the acid liquid circulation structure are arranged on the diverter plate, and the liquid holes on two adjacent diverter plates are staggered. Also disclosed is a method for etching silicon electrode pores using a silicon electrode pore etching device. The silicon electrode pore etching device solves the problem of incomplete and uneven pore etching during silicon electrode etching; the acid enters from the bottom and circulates inside, and the arrangement of the acid tank and the diverter plate can not only reduce the pressure of the acid, but also effectively block impurities, and adjust the flow rate of the acid by staggering the diverter plate up and down to make the whole more uniform; the device adopts a plastic material with good corrosion resistance to effectively avoid the substitution and doping of impurity ions.

The present invention relates to a double-cylinder steam drying system, which comprises a double-cylinder steam dryer and a steam heat exchange and air distribution device for providing hot air to the inside of the double-cylinder steam dryer. The inner cylinder body and the outer cylinder body of the double-cylinder steam dryer are both cylindrical and coaxially fixed. The inner and outer surfaces of the inner cylinder body are both provided with heat dissipation pipes, and the inner surface of the outer cylinder body is also provided with a heat dissipation pipe. A rotary joint is provided at the end of the multi-stage cylinder body group, and the rotary joint is used for air intake and water return. An air intake pipe group for introducing steam and a water return pipe group for discharging condensed water are provided between the rotary joint and the heat dissipation pipe. The air intake pipe group, the water return pipe group and the air guide pipe group of the present invention are all provided with flexible conduits. The precision requirements for processing and assembly are low, so the installation is convenient and quick, and the flexible conduit can compensate for uncontrollable variable stress, protect each pipeline and corresponding parts, reduce the failure rate, reduce the maintenance cost, improve the work efficiency, and facilitate the continuous production of the factory.

The utility model belongs to the technical field of white corundum production and application, and particularly relates to white corundum powder iron removal equipment. Comprising an iron removal container arranged in a tank shape and a feeding pipe arranged at the top of the iron removal container, a discharging pipe is arranged at the bottom of the iron removal container, an iron outlet pipe is further arranged at the bottom of the iron removal container, the discharging pipe and the iron outlet pipe are arranged side by side, a partition plate is arranged in the iron removal container and is close to the bottom of the iron removal container, and the iron removal container is arranged in the iron removal container. According to the device, the existing structure is improved, blanking of the feeding pipe is buffered through the buffer plate, the purpose of evenly distributing white corundum powder is achieved, the partition plate is arranged, the partition plate is arranged, the partition plate is arranged, the partition plate is arranged, the partition plate is arranged, the partition plate is arranged, and the partition plate is arranged in the iron removal container to separate the interior of the iron removal container into a powder cavity and an iron powder cavity. And the discharging pipe is communicated with the powder cavity, and the iron discharging pipe is communicated with the iron powder cavity. The electromagnetic iron plate is divided into the powder cavity and the iron powder cavity, doping and residue of iron powder are avoided, the reciprocating motion of the electromagnetic iron plate is utilized, the iron attracting and falling effects are achieved, and the iron powder is effectively prevented from entering the powder cavity.

The invention discloses a preparation method of a 1, 4-bis (4-phenoxy benzoyl) benzene-AlCl3 complex, and belongs to the technical field of polymer monomer preparation, aromatic diacyl chloride and aromatic ether are used as raw materials, a crude product of the 1, 4-bis (4-phenoxy benzoyl) benzene-AlCl3 complex is continuously synthesized under the catalysis condition of a Lewis acid catalyst, and the crude product of the 1, 4-bis (4-phenoxy benzoyl) benzene-AlCl3 complex is subjected to post-treatment to obtain the 1, 4-bis (4-phenoxy benzoyl) benzene-AlCl3 complex. The high-purity 1, 4-bis (4-phenoxy benzoyl) benzene-AlCl3 complex can be used as a polyether ketone ketone active monomer, and the effect of the active monomer can be exerted without adding aluminum in the polymerization reaction process.

The utility model discloses a constant-temperature bottom-burning-preventing pot, and relates to the technical field of kitchen utensils. Comprising a pot body, a base and a pot cover, a plurality of sets of supporting frames are arranged at the bottom end of a base plate, a plurality of sets of through grooves are formed in the base plate, four sets of partition plates are connected to the outer side of a cylinder, and a net cylinder is connected to one side of each partition plate. According to the pot, the base plate and other components are arranged, the base plate can be placed in the pot body through the supporting frame arranged at the bottom end of the base plate, the through groove is used for enabling liquid in the pot body to form convection, and the base plate is used for separating the pot bottom of the pot body and food in soup. According to the pot, food is prevented from making direct contact with the interior of the bottom of the pot body, the phenomenon that the bottom of the pot body is burnt is effectively reduced, after the barrel is combined with the base plate, liquid can be stored in the barrel for cooking porridge and heating condiment sauce liquid, the food in the pot body can be boiled in a classified mode through the partition plate, and the cooking efficiency is improved. The inconvenience in finding food doping is avoided.

The invention belongs to the technical field of optical communication, and particularly discloses a preparation method of an ultra-low attenuation optical fiber and the ultra-low attenuation optical fiber, and the preparation method comprises the steps: S1, preparing a fluorine-doped sleeve with non-uniform fluorine distribution through employing an external vapor deposition technology; s2, stretching and corroding the fluorine-doped sleeve to obtain an inner cladding with a predetermined aperture; s3, SiO2 is deposited in the inner cladding layer by using an in-tube vapor deposition process, alkali metal doping is performed to form a core layer, the inner cladding layer with the core layer is melted and shrunk into a rod shape, and a rod-shaped structure is obtained; s4, preparing an outer cladding layer outside the rod-shaped structure through an external vapor deposition process, drying the rod-shaped structure with the outer cladding layer, and solidifying in a fluorine-containing atmosphere to obtain an optical fiber preform; and S5, drawing the optical fiber preform to form the optical fiber. According to the preparation method, external chemical vapor deposition and in-tube vapor deposition are utilized to achieve better optical fiber profile matching and viscosity matching.

The utility model relates to the technical field of wastewater treatment, and discloses water recycling treatment equipment which comprises a treatment tank, a cavity is arranged in the treatment tank, a sleeve is arranged at an opening of the cavity, a cavity with openings at two ends is arranged in the sleeve, a mounting block is arranged in the center of the cavity, and a filter plate is sleeved on the mounting block and close to the opening at the lower end of the sleeve. A mounting cavity with two open ends is formed in the mounting block, a rotatable dosing cylinder is arranged in the mounting cavity, a dosing cavity with two open ends is formed in the dosing cylinder, an opening and closing plate is arranged on the lower end face of the dosing cylinder, an opening and closing assembly is arranged in the dosing cylinder, and a mixing assembly is further arranged in the cavity. By means of the structure, after wastewater is filtered through the filter plate, waste residues in the wastewater can be located on the filter plate, separation of the wastewater and the waste residues is achieved, the situation that the waste residues are doped in the treated wastewater after the wastewater is treated through a medicament is avoided, the treated wastewater can be recycled, and practicability is good.

The utility model belongs to the technical field of organic fertilizer production, and particularly relates to a cooling device for organic fertilizer production, which comprises a cooling tank, a fixed column is fixedly arranged at the center of the top end in the cooling tank, and a spiral slideway net is fixedly arranged on the circumferential surface of the fixed column. A baffle is fixedly arranged on the side edge, away from the fixing column, of the spiral slideway net, a rotating shaft is fixedly arranged at the output end of the top end of the driving motor through a coupler, a mounting sleeve is fixedly arranged on the circumferential surface of the rotating shaft, and fan blades are fixedly arranged on the circumferential surface of the mounting sleeve; a vibration machine is fixedly arranged on one side of the bottom end of the spiral slide way net, a plurality of sets of refrigeration pipes are fixedly assembled on the circumferential face of the cooling tank and located between the discharging disc and the fan blades, the cooling effect of organic fertilizer is improved through cooperation of the driving motor, the fan blades and the refrigeration pipes, and meanwhile under cooperation of the spiral slide way net, the cooling effect of the organic fertilizer is improved. The cooling distance of the organic fertilizer is prolonged, and sufficient cooling of the organic fertilizer is guaranteed.

The utility model discloses a catalyst surface powder scraping machine which comprises a clamping mechanism, a scraping mechanism and a dust collecting mechanism. The clamping mechanism is used for clamping and fixing the catalyst, the scraping mechanism is used for rotationally scraping the surface of the catalyst, the scraped material enters the collecting bin through the negative pressure material suction pipeline, the collecting bin adopts a fixed bin and a movable bin which are split, and after the fixed bin and the movable bin are assembled, the movable bin is free of an exposed notch and is in a closed state; and dust cannot overflow into the working environment after entering the movable bin, it is also guaranteed that all materials can enter the movable bin, the powder collecting rate is improved, the movable bin is taken out after collection is completed, and follow-up operation is facilitated.

The utility model provides a construction waste crushing device which comprises a shell, a crushing device, a crushing device and a crushing device, wherein the shell is provided with a crushing cavity in the vertical direction; the extrusion plate is matched with the shell to extrude and crush the construction waste in the crushing cavity so as to separate concrete wrapping the outer wall of the reinforcing steel bar; the output end of the extrusion plate is connected with the shell, the output end of the driving part is connected with the extrusion plate, and the driving part is used for driving the extrusion plate to move in a reciprocating mode. The extrusion plate is matched with the shell to primarily extrude concrete and reinforcing steel bars which are connected together, and the impact block is matched with the shell to extrude and crush the concrete and the reinforcing steel bars again; the concrete block is continuously impacted by the impact block, the concrete block is broken, then the steel bars wrapped in the concrete block are separated from the concrete, recycling of the steel bars is facilitated, the steel bars are prevented from being doped in the concrete aggregate, and reproduction of the concrete aggregate is facilitated.

The invention relates to the technical field of fertilizer processing, in particular to fertilizer batch processing equipment. The fertilizer batch processing equipment provided by the invention can sterilize the fertilizer and heat the interior of the box body. The fertilizer batch processing equipment comprises a bottom plate, mounting racks, a fermentation box, a first discharging pipe, a constant-temperature lamp and an air cylinder, the mounting racks which are in bilateral symmetry are fixedly connected to the bottom plate, the fermentation box is mounted between the two mounting racks, two slopes are arranged at the bottom in the fermentation box, and the first discharging pipe is connected with the two slopes. The fermentation box is connected and communicated with a first discharging pipe, constant-temperature lamps which are symmetrically distributed are mounted in the fermentation box, and an air cylinder is mounted on the fermentation box. By arranging a water pump, a bactericide is pumped into a first connecting pipe and a second connecting pipe and then sprayed into the fermentation box through a spray head, so that the fertilizer is sterilized, and the situation that the fermentation effect is affected by more bacteria in the fertilizer is avoided.

The utility model relates to the technical field of detection equipment, in particular to a rice detection layering device which comprises a sampling pipe and a pressing rod, a cavity is formed in the sampling pipe, a sliding groove with a closing part closed in a sliding mode is formed in one face of a closing opening, a plurality of circular containing bins are arranged on the pressing rod in the cavity, and the outer walls of the containing bins are attached to the inner wall of the cavity. The two sides of each storage bin are provided with feeding ports, the feeding ports in the two sides of each storage bin are provided with connecting plates, the connecting plates are provided with two sliding blocks for driving the closing parts to slide, and through the arrangement of the closing parts and the storage bins, when the pressing rod is pressed, the connecting plates and the sliding blocks on the multiple storage bins in the cavity can drive the closing parts to slide in the sliding grooves in the descending process; by means of the technical scheme, the problems that in the prior art, unhulled rice in an unhulled rice detection layering device is scattered due to vibration, toppling and the like, the sample amount is reduced, the samples are polluted by the external environment, and the accuracy of the detection result is affected are solved.

The invention provides an iron-chromium-aluminum metal filament and a sample weaving machine for producing iron-chromium-aluminum metal filament fasciated yarn, and relates to the technical field of sample weaving machines for metal filament fasciated yarn, the iron-chromium-aluminum metal filament and the sample weaving machine comprise a fasciated yarn sample weaving machine and two first belts. When the fasciated yarn sample weaving machine is used for carrying out yarn covering processing on metal filaments, the distance between the sponge rollers can be adjusted according to the thickness condition of used yarns, so that the outer surfaces of the sponge rollers can be tightly attached to the outer surfaces of the yarns, and the yarns with different thicknesses can be conveniently cleaned; then the motor drives the sponge rollers to rotate on the screw hole frame in the opposite direction, the direction of the sponge rollers is opposite to the movement direction of the yarn, and dust and impurities attached to the surface of the yarn are wiped and cleaned away; therefore, attached dust and impurities cannot be wound in the yarn and the metal filaments together, the situation that the metal filaments obtained after yarn covering are doped with impurities is avoided, and the quality of finished products is improved.

The present invention relates to the field of graphite powder screening, and in particular to a graphite powder ultrasonic screening device and a screening method thereof, comprising an outer cylinder, wherein a first screening tube is eccentrically arranged in the outer cylinder, and first eccentric tubes are connected to both ends of the first screening tube, the first eccentric tube rotates coaxially with the outer cylinder, one end of the outer cylinder is provided with a feeder connected to the first screening tube, the other end of the outer cylinder is provided with a first discharge tube connected to the first screening tube, and the surface of the outer cylinder is provided with a second discharge tube connected to the gap between the first screening tube and the outer cylinder, the first screening tube comprises a rubber tube, and the rubber tube is tensioned. The present invention adopts an elastically tensioned rubber tube, and intermittently introduces gas in an eccentric rotating state to make it vibrate at high frequency for screening graphite powder. The entire screening process maintains linear conduction of the graphite powder in the tube, the continuity of the screening process is better, and the graphite powder can be conveniently isolated from contact with the external environment, so as to avoid the graphite powder being mixed with dust and also avoid the graphite powder from entering the external environment.

The invention belongs to the technical field of chemical synthesis, and particularly relates to a system and a method for preparing anhydrous peroxy acid with more than C3 by coupling a resin bed with a NaA membrane module. The system comprises a reactive distillation tower, the reactive distillation tower is sequentially provided with a tower top area, a first structured packing layer, a plurality of reaction separation assemblies and a tower bottom area from top to bottom, and each reaction separation assembly comprises an acidic resin bed and a NaA molecular sieve membrane assembly located below the acidic resin bed. The first structured packing layer is provided with a mixed material inlet of organic acid with more than C3 and hydrogen peroxide, and the acidic resin bed is provided with an organic solvent inlet. By adopting the system to prepare anhydrous peroxy acid, the energy consumption of the reaction rectifying tower can be effectively reduced, the reaction speed can be increased, decomposition explosion of peroxide can be prevented, meanwhile, loss of a catalyst in the later period can be effectively avoided, the catalyst is prevented from entering the anhydrous peroxy acid product, caprolactone is prepared by utilizing the prepared anhydrous peroxy acid product, and the yield of caprolactone is improved. And relatively high caprolactone selectivity and yield can be obtained.

The utility model discloses a quick feeding device for a magnetic separator, which relates to the technical field of magnetic separator feeding and screening devices and comprises a magnetic separator feeding seat, a feeding cavity is arranged in the magnetic separator feeding seat, a feeding device is arranged at the position of the feeding cavity, and the feeding device comprises a crushing and wall scraping unit and a screening and centralized crushing unit. The crushing and wall scraping unit comprises a crushing shaft, transmission parts are symmetrically distributed at the axis and the two ends of the crushing shaft, the transmission parts are connected with wall scraping telescopic rods, and wall scraping cleaning plates are arranged at the bottoms of the wall scraping telescopic rods. Ore pulp obtained after ore pulp particles are crushed is screened by arranging a primary screening net plate and a secondary screening net plate in the screening and centralized crushing unit, ore pulp which is not completely crushed is collected in a unified mode through a centralized collecting opening, doping is avoided, and the production quality of follow-up ore pulp is improved; and the ore pulp is subjected to centralized crushing again through the centralized crushing shaft and the sealing plate, so that the production quality is guaranteed.

The invention discloses a detection device for soil remediation and a method thereof, and relates to the technical field of soil remediation detection equipment. The detection device for soil remediation comprises a machine base, a lifting table sliding in the axial direction of the machine base, a guide column arranged on the lower surface of the lifting table and a hollow ground inserting rod, the hollow ground inserting rod is fixed to the lower end of the guide column, and the lower end of the hollow ground inserting rod is detachably connected with a longitudinal drill bit through a connecting assembly. According to the structure, through the arrangement of the multiple sampling pipes, samples are collected in multiple directions in the same plane, the accuracy of a soil sample detection result is improved, the samples in the sampling pipes can be effectively protected by controlling the sampling pipes to enter and exit from the hollow ground inserting rod, the samples are prevented from being doped with soil of different layers, the soil sampling effect is good, and the soil samples are prevented from falling off.

The invention relates to the technical field of gas mixing equipment, in particular to a gas uniform distribution mixer which is connected to a gas inlet pipe opening of an esterification tower and comprises a barrel, a supporting frame, a balance plate, a rectifier and a distributor, and the supporting frame is located in the barrel and comprises a front end connecting part, a shaft pipe and a rear end connecting part; the shaft tube is rotationally connected with the front end connecting part and the rear end connecting part, the shaft tube is communicated with the rear end connecting part, the rear end connecting part is communicated with an oxygen inlet outside the cylinder body, a balance plate and a plurality of distributors are connected to the shaft tube, air holes are uniformly distributed in the balance plate, the distributors are arrayed in the circumferential direction of the shaft tube, and the air holes are communicated with the air holes. Air outlet holes are formed in each distributor at intervals, the air outlet holes incline towards the rear end connecting part, and a rectifier connected to the inner wall of the cylinder body is arranged between the balance plate and the distributors. According to the invention, oxygen and NO gas are fully mixed and dispersed, local high temperature is avoided, and meanwhile, oxygen can be quickly consumed and is prevented from being doped into subsequent processes.