376 results about "Membrane bodies" patented technology

The invention belongs to the technical field of sewage treatment and membrane separation, and provides an in-situ nondestructive membrane pollution detection system and method based on an ultrasonic transmission signal, and the system comprises an ultrasonic excitation module which is used for generating a sine wave excitation signal which penetrates through a membrane body to excite the ultrasonic transmission signal for pollution detection; the signal processing module is used for continuously collecting and preprocessing ultrasonic transmission signals of the clean membrane body and the membrane bodies with different pollution degrees, extracting ultrasonic transmission signal characteristics under different pollution degrees, and establishing a pollution thickness-signal characteristic mapping model; wherein the ultrasonic transmission signal features comprise a time-frequency domain energy gravity center feature and a frequency attenuation spectrum slope feature; and the pollution detection module is used for judging the pollution stage of the membrane body to be detected based on the pollution thickness-signal feature mapping model, and completing in-situ nondestructive membrane pollution detection. According to the technical scheme, the sludge pollution state in the ceramic membrane and flat membrane filtering process can be monitored in real time, and early warning and pollution dynamic tracking are achieved.

The invention discloses an ultrahigh-pressure cable outdoor terminal filled with environment-friendly gas, and particularly relates to the technical field of cable installation, the ultrahigh-pressure cable outdoor terminal comprises an inflation installation assembly and a gas supplement installation assembly, the inflation installation assembly comprises a division bar, a film body and a rotating rod, the division bar is fixed to the inner wall of a terminal sleeve, and one side of the division bar is connected with the film body capable of being cut; the rotating rod is rotationally arranged on one side of the inner wall of the film body, and the air supply mounting assembly comprises an arc-shaped film fixedly connected to one side of the groove strip. According to the invention, through the air inflation installation assembly and the air supply installation assembly, automatic quantitative air inflation and air supply installation operation can be completed in the terminal sleeve according to a specified amount, the complexity caused by carrying equipment during outdoor installation is effectively avoided, and the installation efficiency of the cable terminal is greatly improved; therefore, the problem that the installation efficiency of the cable terminal is greatly reduced due to the fact that internal autonomous quantitative operation is difficult to realize because the terminal does not preset the air charging and supplementing functions is solved.

What is suggested is a micromembrane pumping device for pumping a fluid, having: a pump chamber to which an inlet valve, an outlet valve, and a membrane device for varying a volume of the pump chamber are associated, wherein the membrane device has a plate-shaped actuator for deforming the membrane device; and influencing means for influencing the plate-shaped actuator and the volume of the pump chamber; wherein the membrane device has a plate-shaped membrane body limiting the pump chamber; wherein the plate-shaped actuator is arranged on a side of the plate-shaped membrane body facing away from the pump chamber; wherein the plate-shaped actuator is mounted to and electrically insulated from the plate-shaped membrane body by an electrically insulating glue layer; wherein at least one embedded portion of a support body at or in which a deformation sensor for detecting a deformation of the membrane device is arranged, is arranged within the glue layer to detect the volume of the pump chamber; wherein the influencing means, the plate-shaped actuator and the deformation sensor form a closed-loop control circuit for regulating a volume flow.

The invention discloses a Fe / C loaded membrane module, a PN / A-MABR autotrophic nitrogen removal device, a preparation method and a sewage treatment method, and belongs to the technical field of sewage treatment. According to the invention, the problem that the treatment effect is influenced by NO3 <->-N accumulation in the existing membrane aeration coupling partial nitrification-anaerobic ammonia oxidation process is solved. Comprising a frame and a membrane body attached to the outer portion of the frame, the membrane body comprises a hydrophobic organic membrane layer, an iron-carbon material layer and a biological membrane layer which are sequentially arranged, and the hydrophobic organic membrane layer is attached to the outer portion of the frame. The iron-carbon material is added between the hydrophobic organic membrane layer and the biological membrane layer, the iron-carbon micro-electrolysis process is coupled with the dissimilatory process of nitrate generated by microbial metabolism, the removal of NO3 <->-N generated by anaerobic ammonia oxidation is enhanced, and the total nitrogen removal efficiency is improved.

The application discloses a bipolar membrane electrodialysis device, which comprises an outer box body and further comprises a liquid inlet mechanism, a plurality of electrodialysis mechanisms and a plurality of filtering mechanisms. The filtering mechanism comprises a filtering box, a driving filtering assembly and a liquid feeding assembly. The driving filtering assembly comprises a motor installed on the top of the filtering box, the output shaft of the motor is fixedly connected with a threaded rod, the outer periphery of the threaded rod is threadedly connected with a filtering plate slidingly connected to the inner wall of the filtering box, and the bottom inner wall of the filtering box is fixedly connected with a plurality of plug rods matched with filtering holes of the filtering plate. Raw water is delivered to the inside of the filtering box through the liquid inlet mechanism, is actively filtered without turbulence through the driving filtering assembly, is delivered to the corresponding electrodialysis mechanism through the liquid feeding assembly and is further subjected to electrodialysis treatment. The filtering plate and other components are arranged to filter out the solid impurities mixed in industrial glucose acid salt, so that the bipolar membrane electrodialysis process and the bipolar membrane body are not affected.

The invention relates to a water treatment and membrane separation technology, and provides an integrated catalytic separation membrane, a preparation method thereof, and a water treatment method and system. According to the membrane, polyvinylidene fluoride is used as a continuous phase to form a porous matrix, and cerium dioxide is embedded and fixed in a mode of uniform dispersion in a membrane body in a phase inversion membrane forming process; in the presence of illumination and peroxysulfate, active species are generated through in-situ activation on a membrane-water interface, and membrane separation is completed synchronously. The water treatment method comprises the following steps: adding peroxymonosulfate or peroxydisulfate into a water body to be treated, and filtering through the membrane under illumination; the photothermal effect generated by organic matter degradation intermediates in operation inhibits membrane pollution and maintains flux. According to the invention, short-range coupling of active sites and mass transfer channels is realized, the medicament and energy utilization rate is improved, the coating stripping and metal dissolution risk is reduced, and the method is suitable for drinking water pretreatment, reclaimed water deep treatment and treatment of water containing natural organic matters / humic acid.

The invention discloses a method for improving the crystallinity of a flexible covalent organic framework film through solvent heat treatment, and relates to the technical field of flexible functional film materials, and the method comprises the following steps: (1) synthesizing a COF film; (2) soaking the COF membrane in a triethylamine methanol solution to remove residual acidic components; and (3) putting the treated membrane into an acetic acid acetonitrile solution, and heating at 100 DEG C for 0.5-6 hours to improve the crystallinity of the membrane. According to the method, rearrangement of framework chain segments in a film body and enhancement of crystallinity are achieved through the mild two-step solution treatment step, the XRD diffraction intensity, the film body compactness and the structural orderliness of the COF film are remarkably improved, and meanwhile the flexibility and the mechanical property of an original film are kept.

The embodiment of the invention relates to a porous Mylar membrane which is suitable for a battery structure and comprises a membrane body and a plurality of pores formed in the membrane body, the porosity of the plurality of pores is 10%-50%; and the plurality of pores are uniformly distributed or distributed in a gradient manner. According to the porous Mylar film, the surface area of the film is greatly increased, efficient heat dissipation channels are formed, meanwhile, the electrolyte filled in the pores is also beneficial to heat transfer and diffusion, heat generated in the working process of a battery can be dissipated more timely, and the heat dissipation efficiency can be improved by 10%-50% compared with the prior art. According to the invention, the rising of the internal temperature of the battery can be effectively controlled, the stable performance of the battery is effectively maintained, the performance degradation and safety risk of the battery caused by overheating are reduced, and the service life of the battery is prolonged. The battery is simple in structure, the weight of the battery is reduced, the energy density of the battery is increased, and the liquid retention capacity of the battery is also effectively improved.

The invention discloses a high-flux silicon carbide ceramic membrane filtering device, and belongs to the technical field of filtering equipment, the high-flux silicon carbide ceramic membrane filtering device comprises a guide cylinder unit and a rotating membrane cylinder unit, a dead end filtering station and a cross flow filtering station are arranged in the guide cylinder unit, and the rotating membrane cylinder unit is rotatably mounted in the guide cylinder unit; the two groups of silicon carbide ceramic membrane cylinders are rotatably mounted in the rotating membrane cylinder unit, pollutants on the surface of a membrane layer are cleaned by circularly switching the working states of the ceramic membrane cylinders, and the two groups of silicon carbide ceramic membranes can be always kept in a rotating state in the filtering process, so that the pollutants are uniformly distributed on the membrane layer; the deep deposition of pollutants in a specific area during dead-end filtration is avoided, and meanwhile, the two groups of membrane bodies are circularly switched between a dead-end filtration station and a cross-flow filtration station, so that the formation of a filter cake layer is effectively reduced, and the device is ensured to be in a high-membrane flux state.

The utility model relates to the technical field of batteries, in particular to a battery. The battery core coating film comprises a film body which is provided with two film bodies opposite to the two side surfaces of a battery core in the thickness direction respectively; the supporting assembly is arranged on the surface, facing the battery cell, of the membrane body, the supporting assembly comprises a supporting piece and an elastic telescopic piece, the supporting piece comprises a central area and an edge area surrounding the central area, the central area is connected with the membrane body, and a gap is formed between the edge area and the membrane body; the elastic telescopic piece is arranged in a gap between the edge area and the membrane body, and the two ends of the elastic telescopic piece are connected with the membrane body and the supporting piece respectively. According to the battery disclosed by the utility model, the positive plate and the negative plate of the battery cell are stably attached through the supporting assembly, so that the service life of the battery is prolonged, and the satisfaction degree of a user is improved.

The invention belongs to the field of foundation engineering construction, and provides a building foundation engineering construction method which comprises the following steps: S1, geological improvement, cushion construction and expansive soil treatment; s2, prefabricated foundation components are assembled; s3, intelligent reinforcement cage construction; s4, concrete pouring and curing; and S5, performing quality verification and data archiving. The lime and coal ash mixed curing layer is adopted to inhibit ion exchange expansion, the expansion coefficient of expansive soil is reduced, liquid water permeation is blocked through the breathable film, gaseous water diffusion is allowed, damage to a film body caused by air pressure is reduced, temperature rise and deformation data are fed back in real time through the sensor network embedded in the reinforcement cage, pouring parameters are dynamically adjusted, and the construction quality is improved. A point cloud model is generated through three-dimensional laser scanning, an acceptance report is generated by comparing with BIM design deviation, manual measurement is replaced, the acceptance efficiency is higher, and whole-process intelligent monitoring can be achieved.

The invention relates to the technical field of sewage treatment, and discloses RO (reverse osmosis) sewage treatment equipment and a treatment method, and the RO sewage treatment equipment comprises a workbench, a filtering assembly, a conveying assembly, an adjusting roller and a half gear. Through cooperative work of the half gear, the adjusting roller and other parts, when the reverse osmosis membrane body is blocked, the next group of membrane body can be automatically switched to a working position, frequent manual intervention is not needed, the human input is greatly reduced, the cleaning time is shortened, and the sewage treatment continuity and stability are remarkably improved; meanwhile, aiming at the defects that a membrane element is easy to damage and the service life is influenced in the traditional disassembly and cleaning, a'filtration-backflushing 'integrated operation mode is adopted, part of filtered liquid reversely flows into a reverse osmosis membrane body which does not participate in the filtration operation at a low flow speed for flushing, and impurities on the surface of the membrane are effectively removed by utilizing residual pressure of filtrate; and the damage risk caused by physical disassembly is avoided.

The utility model relates to a high-sealing anti-corrosion reverse hanging membrane structure, which belongs to the technical field of reverse hanging membrane structures and comprises no less than two gantry steel structures, and anti-corrosion reverse hanging membrane bodies are fixed in the no less than two gantry steel structures through fixing belts. According to the high-sealing anti-corrosion reverse hanging membrane structure, through the arrangement of the telescopic assembly, the at least two gantry steel structures can be compressed and folded, an open space is vacated to facilitate later cleaning of the interior of a sewage pool, and the at least two gantry steel structures are located on the outer side of the sewage pool; two hand wheels on the right side can be twisted to drive two ground piles to rotate in two connecting blocks and move upwards to move out of the interior of the foundation, at the moment, at least two telescopic assemblies are compressed and shortened, at least two gantry steel structures move leftwards, and at the moment, the telescopic assemblies are compressed and shortened; then, an open space is formed on the outer side of the right side of the sewage pool, so that the interior of the sewage pool is cleaned.

The invention discloses a polyarylene ether nitrile nanofiber membrane and a preparation method of the polyarylene ether nitrile nanofiber membrane through double-solvent synergistic electrostatic spinning, and relates to the field of high polymer material preparation. The method comprises the following steps: preparing two electrostatic spinning solutions with obvious volatilization rate and dissolution parameter difference, and alternately depositing two types of fibers on a collecting surface by adopting dual-channel synergistic electrostatic spinning; in the deposition and drying process, chain segments at fiber cross points are induced to swell, mutually diffuse and cure in situ to form bonding points by utilizing the poor evaporation rate of a high / low volatile solvent and the poor solvent-polymer compatibility, so that the self-densification and the structure stabilization of the nanofiber membrane are realized. The obtained nanofiber membrane has high-density in-situ bonding points and remarkably improved mechanical properties, does not need additional post-treatment such as hot pressing or solvent spraying, and is suitable for application such as interlayer reinforcement and interface toughening of composite materials. The process has continuity and controllability, and the density and mechanical properties of the membrane body can be customized by adjusting a solvent system and spinning parameters.

The invention discloses an MXene-coated PZS-C gel structure membrane electrode as well as a preparation method and application thereof, and belongs to the technical field of electrochemical uranium removal. Carrying out etching stripping or etching intercalation stripping on the MAX powder to form an MXene nanosheet suspension; the preparation method comprises the following steps: dissolving phosphonitrilic chloride trimer and 4, 4-dihydroxy diphenyl sulfone, adding triethylamine, and carrying out condensation reaction under the ultrasonic action to obtain microspherical PZS; the preparation method comprises the following steps: stirring and mixing an MXene nanosheet suspension and microspherical PZS, depositing the mixture on a substrate in a vacuum-assisted filtration manner to form a membrane body, and carrying out vacuum freeze drying and calcination on the membrane body to obtain the MXene-coated PZS-C gel structure membrane electrode which has good stability, fully exposes active sites, is used for electrochemical separation of uranyl ions, and has a good application prospect in electrochemical separation of uranyl ions. The maximum removal amount of the material reaches up to 3375.44 mg / g and is generally higher than that of other electrochemical uranium removal materials, and the material has a good application prospect.

The utility model provides an auxiliary device for sleeving a casing into a filling pipe, which comprises a curled film main body, the film main body is curled in a natural state to form a C-shaped tubular structure with a longitudinal opening, and horn mouth parts are arranged at two ends of the film main body. By arranging the curled film main body and utilizing the C-shaped tubular structure formed in the natural state, when the auxiliary device is sleeved into the filling pipe, the tubular film main body can form a temporary isolation layer between the casing and the filling pipe. And the chance that the casing is in direct contact with the port or the pipe wall of the filling pipe is reduced, so that the risk that the casing is damaged due to direct scratching is reduced, and the casing is protected. And the horn mouth parts arranged at the two ends of the film main body provide effective guidance for sleeving the auxiliary device into the filling pipe and subsequently sleeving the casing into the auxiliary device. Therefore, an operator can more easily align and place the auxiliary device at the port of the filling pipe, the alignment operation is simplified, and the smoothness of the sleeving process is improved.

The utility model discloses a vacuum membrane dehumidification device taking a hollow fiber membrane as a carrier. The vacuum membrane dehumidification device comprises a pipe joint assembly, a connecting assembly, a hollow fiber dehumidification membrane working assembly and a vacuum pump, the pipe joint assembly comprises a first joint and a second joint; the connecting assembly comprises a first sleeve, a hollow pipe and a second sleeve; the hollow fiber dehumidification membrane working assembly comprises a first threaded pipe fitting, a hollow fiber dehumidification membrane pipeline and a second threaded pipe fitting. And the hollow fiber dehumidification membrane pipeline is arranged between the first threaded pipe and the second threaded pipe. The hollow pipe is provided with a ventilation opening used for being connected with a vacuum pump. Compared with the prior art, the dehumidification device adopts a vacuum film dehumidification technology, can realize stable dehumidification of gas, has the characteristics of being compact in structure, flexible and convenient to install, easy to maintain and repair and easy to iterate and upgrade, and solves the problems that an existing vacuum film dehumidification device is tedious in film body disassembly and replacement steps, low in cost and the like. And the surface area of the film body of the selective vacuum dehumidification film is difficult to effectively increase.

The application discloses a soil-rock dam reinforcing and enhancing structure for preventing over-standard overflow dam break and a construction method thereof. The structure comprises a soil-rock dam filling body, a vertical anti-seepage core wall arranged in the soil-rock dam filling body, and a composite high-strength fiber three-dimensional membrane arranged on the surface of the dam slope after regulation. The membrane body is unfolded along the slope surface and is reinforced by a pressing plate type fixing anchor bolt and a fiber membrane three-dimensional rivet. The row-to-row spacing of the fixing anchor bolt is 20-50 cm, so that the composite membrane is tightly attached to the dam body. The rigid structure and the flexible protection material are organically combined, the dam body's erosion resistance and durability are significantly improved while the flood discharge capacity is ensured, the construction method is simple, the cost is low, and the method is suitable for flood control reinforcement and safe operation of various soil-rock dams.

The utility model discloses a leakage-proof structure of an inflatable membrane, which comprises a mounting frame, a leakage-proof cover, a leakage-proof cover and a leakage-proof cover, and is characterized in that the mounting frame is provided with a clamping mechanism; the clamping mechanism comprises a lead screw and sliding rods, an inner cavity is formed in the mounting frame, the lead screw is rotationally connected with the inner side wall of the inner cavity, two sliding blocks are slidably connected to the lead screw, the sliding rods are fixedly connected to the two sliding blocks, a sliding groove penetrating through the inner cavity is formed in the inner side wall of the mounting frame, and the sliding rods are fixedly connected to the sliding blocks. The upper ends of the sliding rods penetrate through the sliding grooves and are fixedly connected with clamping plates. The pneumatic membrane body is clamped through the two clamping plates, friction force is increased through the non-slip mat, clamping is more stable, excessive bolts are prevented from being used, the device is convenient to disassemble and assemble, use is more convenient, the movable rod abuts against the pneumatic membrane body, the movable rod is fixedly connected with the sealing gasket, and the pneumatic membrane body can be clamped through the sealing gasket. And through cooperation of a movable rod and a limiting rod, the leakage-proof effect of the device is better, and rainwater is prevented from leaking from the bottom.

The invention discloses a liquid storage bottle with water-blocking and air-permeable effects, belongs to the technical field of water-blocking and air-permeable of biochemical containers, and solves the problem of failure of a water-blocking and air-permeable membrane caused by contact between a large amount of liquid and the water-blocking and air-permeable membrane in the prior art. The invention discloses a liquid storage bottle with water-blocking and ventilating effects. The liquid storage bottle comprises a spiral bottle cap, a liquid inlet pipe, a liquid outlet pipe, ventilating holes and a water-blocking and ventilating device, the liquid inlet pipe and the liquid outlet pipe are arranged in the spiral bottle cap, the ventilation hole is formed in the middle of the spiral bottle cap, and the water blocking ventilation device is installed on the inner side of the middle of the spiral bottle cap. Through the arrangement of the shell, the film body and the water blocking holes, when the liquid storage bottle vibrates and splashes liquid, the shell prevents a large amount of liquid from being splashed and making contact with the film body, and the water blocking and air permeability of the film body is guaranteed.

The utility model relates to a membrane structure and a water purification device, and relates to the technical field of water purification treatment. The diaphragm structure comprises a diaphragm group and at least one separator, the diaphragm group comprises at least two layers of diaphragm bodies, the at least two layers of diaphragm bodies are sequentially stacked, and the front surfaces of the two adjacent layers of diaphragm bodies are oppositely arranged to form a water inlet runner; the membrane body is provided with a first side and a second side which are oppositely arranged in a first direction, the first side is provided with a raw water inlet communicated with the water inlet flow channel, and the second side is provided with a concentrated water outlet communicated with the water inlet flow channel; at least one separator is arranged in the water inlet flow channel, and the separator is configured to be capable of separating the water inlet flow channel so as to improve the flow speed of fluid in the water inlet flow channel. According to the technical scheme disclosed by the utility model, the membrane surface concentration polarization layer phenomenon can be weakened, the anti-pollution capability of the membrane structure is improved, and the service life of the membrane structure is prolonged.

This utility model discloses a winding and traction device for a waterproof membrane production line, belonging to the field of waterproof membrane production. The winding and traction device for a waterproof membrane production line includes a base, an adjustment mechanism for the interior of the trough and the surface of the first traction roller, a clamping and anti-loosening mechanism for the fixing frame and the surface of the waterproof membrane body, and an automatic feeding mechanism inside the holding trough. This utility model not only ensures stable transmission and precise winding of waterproof membrane bodies of different thicknesses during use, preventing deviation and gaps between the waterproof membrane bodies during winding, thus improving the winding effect, but also increases production efficiency and enhances the automation level of the winding and traction device.

The utility model discloses a microbial separation device and relates to the technical field of microbial separation. The device comprises a separation box, a sealing box door is hinged to one side of the separation box, a plurality of filter membrane bodies are placed in the separation box, square frames are arranged on the peripheral sides of the filter membrane bodies, and positioning sliding grooves corresponding to the square frames are formed in the two sides of the inner wall of the separation box; the two sides of the separation box are elastically matched with a frame shaped like a Chinese character'feng ', provided with two motors and provided with two sliding holes communicated with the positioning sliding grooves, output shafts of the motors are fixedly connected with eccentric wheels, a plurality of inserting columns are arranged on one side of the frame shaped like the Chinese character'feng', and two inserting holes are formed in the two sides of the square frame. According to the utility model, the motor works to drive the eccentric wheel to rotate so as to extrude and push the abundant-shaped frame, so that the abundant-shaped frame drives the insertion column to move towards the direction far away from the separation box, and the insertion column cancels the limit of the square frame; and the abundance-shaped frame is quickly reset under the action of elastic force.

The utility model relates to the technical field of water purifiers, in particular to an outlet water temperature adjustable water purifier for delivery in water, which comprises a mechanical filter body, a softener body, a security filter body, a balancer body, a high-pressure pump body, an RO (reverse osmosis) membrane body, a first heater body and a second heater body, the mechanical filter body, the softener body, the security filter body and the balancer body are connected through a first pipeline, the balancer, the high-pressure pump body and the RO membrane body are connected through a third pipeline, the RO membrane body, the first heater body and the second heater body are connected through a fourth pipeline, and a water outlet is formed in the tail end of the fourth pipeline. The water outlet is connected with the balancer body through a third pipeline; the water purifier has the beneficial effects that a pure water tank is not needed, and a direct supply mode is adopted, so that pure water does not stay and circulates, and bacteria breeding is avoided.

The invention discloses a proton exchange membrane hydrogen transmittance measuring device and method based on an isobaric method, and relates to the technical field of passing rate measuration.The proton exchange membrane hydrogen transmittance measuring device based on the isobaric method comprises a box body and an upper box body installed on the top of the box body, and a base is fixed to the bottom of the box body; a box opening is formed in one side of the box body, a box door is installed at the position of the box opening, a bottom sealing piece is fixed to the base, first guide rods are installed on the two sides of the bottom sealing piece respectively, and guide sleeves in sliding fit with the first guide rods are fixed to the two sides of a top sealing piece respectively. The central part of the proton exchange membrane body can move towards the interior of the pressing groove through the reserved compensation part, so that the problems of overlarge tension and deformation of the measurement part of the central part of the proton exchange membrane body during pressing through the pressing block and the pressing groove are avoided.

The utility model belongs to the field of films, particularly relates to a special film for enhancing a CT (Computed Tomography) indwelling needle, and aims to solve the problems that the conventional film cannot improve the stability and comfort of the film on the skin of a patient, so that the film is loosened and falls off or the patient feels uncomfortable, and the comfort and safety are reduced. A hollow hole matched with the shape of an indwelling needle is formed in the center of the top of the film body, and the film body comprises a protective layer, a breathable layer and an adhesive layer; the fixing assembly is arranged on the membrane body and used for reinforcing fixation of the membrane body. Through the combination of the fixing assembly, the hollow holes and the film body, the stability of the sticking film on the skin of a patient is remarkably improved, the sticking film is effectively prevented from loosening or falling off, safety and stability of an indwelling needle in the examination process are ensured, meanwhile, discomfort of the patient is relieved, and comfort and safety are improved.

The utility model discloses an ultrafiltration membrane test platform device, which belongs to the technical field of ultrafiltration membrane test platform devices, and is characterized by comprising a bottom plate, the top of the bottom plate is fixedly connected with a simulation assembly, the bottom of the simulation assembly is in threaded connection with an ultrafiltration membrane body, and the top of the bottom plate is fixedly connected with a detection assembly; the simulation assembly comprises a box body, the top of the box body is provided with a first cavity and a plurality of second cavities, the top of the box body is rotatably connected with a top cover, and the top of the top cover is provided with a first valve and a second valve. The problems that most of existing sewage is relatively single, different conditions or different turbidity cannot be simulated conveniently, and certain limitation is caused are solved.

The invention relates to a degradable nerve repair membrane and a preparation method thereof, and belongs to the technical field of nerve repair membranes, the degradable nerve repair membrane comprises a biological composite structure inner layer, a support outer layer and a bonding layer, and the biological composite structure inner layer and the support outer layer are bonded through the bonding layer. According to the invention, polypyrrole with excellent electrochemical activity, environmental stability, controllable conductivity and poor mechanical properties and collagen nanofibers with high biocompatibility and capable of forming a nano-scale fiber network are adopted to form a conductive-biological composite structure as an inner layer through electrostatic spinning, and the PLGA porous membrane is prepared through 3D printing. A PLGA porous membrane with parallel axial microchannels on the surface is used as an outer layer, so that the membrane body structure can effectively guide directional growth of axons while ensuring conductivity, accurate preparation can be realized according to needs, the degradation period is matched with the nerve regeneration rate, and the degradation time can be regulated and controlled through the proportion of a copolymer; the repairing effect is prevented from being influenced by too fast or too slow degradation.

The film tearing system comprises a mechanical arm and a film tearing device, the film tearing device comprises a machine table, a rotator is installed on the machine table, the rotator is in driving connection with a rotating rod, a plurality of film collecting needles are fixedly arranged on the rotating rod, a push-pull device is fixedly installed below the machine table, and the push-pull end of the push-pull device is fixedly connected with a plurality of material stirring plates. And the plurality of shifting plates and the plurality of film collecting needles are arranged in a one-to-one correspondence manner. According to the utility model, the rotator drives the rotating rod and the film collecting needle to puncture and strip the film, and the push-pull device drives the material stirring plate to work cooperatively, so that the stripping, collection and waste treatment of the film body can be completed quickly and accurately, the film body is ensured to be effectively removed, and the subsequent influence caused by film retention is avoided. Particularly, due to the design of the U-shaped notch in the material shifting plate, the film body is isolated and removed while the film collecting needle is ingeniously embedded, and the film shifting success rate and efficiency are improved.