37results about How to "Overcome repulsion" patented technology

The invention discloses a method for carrying out ecological remediation in cadmium-contaminated soil by using cadmium resistant fungi, and relates to a microorganism ecological remediation technology. The method comprises the following steps: (1) separating and purifying cadmium resistant fungi; (2) identifying the cadmium resistant fungi; (3) determining the most suitable growth condition of the cadmium resistant fungi; (4) preparing cadmium resistant fungus remediation matrixes; and (5) remedying the cadmium-contaminated soil. The method has the advantages that rhizosphere soil of dominant plants in a cadmium-contaminated area is used as a cadmium resistance microorganism screening source, and the defect of the adaptation of cadmium resistance microorganisms screened out to the soil environments in the remedied area is overcome; bermuda grasses which have a certain capacity of resisting cadmium and are compatible with the cadmium resistant fungi are used for overcoming the repulsive interaction between plants and microorganisms; the cadmium resistant fungi are inoculated in saw dust for application, so that the nutrient supply of microorganism growth is ensured, and the waste is effectively utilized; the method is low in cost, simple and convenient to operate, and the microorganisms rapidly grow and can breed on a large scale.

The invention discloses a box body structure with a cover opening and closing function, and belongs to the technical field of box body structures. The box body structure comprises a lower shell and anupper cover rotationally connected with the lower shell, wherein the lower shell and the upper cover are cooperatively provided with a buckle assembly, and the buckle assembly comprises a first buckle and a second buckle; the box body structure further comprises a key connected with the second buckle, a first magnet is mounted on the inner side of the key, and a second magnet which is mutually exclusive with the first magnet is mounted in a box body; the key passes through the box body and is displaced back and forth, so that the first magnet is close to or away from the second magnet; the second buckle is located on the inner side of the first buckle and is buckled with the first buckle to enable the box body to be closed; and the first buckle and the second buckle are separated to enable the box body to be opened. When an external force is not applied to the box body structure, the key can automatically returns, so that the box body structure has sense of science and technology of design, when a cover is closed, the key is pressed to enable the first buckle and the second buckle to be buckled, the abrasion and the aging of the buckle assembly are avoided, and the cost is low.

A magnet arrangement (1) having a permanent magnet system with at least two ring-shaped magnet elements (2) which are made of individual magnet segments (3), are arranged cylindrically symmetrically and stacked on one another in the z direction and / or concentrically, and arranged such that the magnetization directions of the individual segments in the rings extend parallel in an x-y plane. The magnet elements align relative to one another in the z direction and have a Halbach magnetization Before final mounting in the magnetic resonance apparatus, the magnet elements are prefabricated as solidstructures and their respective magnet segments are fixed undisplaceably relative to one another. But the magnet elements are displaceable relative to one another in the x-y plane, and are mounted rotatably and / or tiltably relative to one another. Therefore, simple mounting can be performed obviously and furthermore an MR device with a pluralty of Halbach configuration s can be more obviously andmore economically manufactured. Furthermore a magnetic field gradient caused by assembling can be minimized. In other words, a Halbach configuration is presented, and the Halbach configuration structure can operate in an obviously lowered mechanical shimming freedom.

The invention discloses a centrifugal gas electro-spinning device used for preparing a large number of three-dimensional nanofiber scaffolds. The device comprises a high-voltage power supply device, a gas supply device, centrifugal sprayers, open rotary receiving devices and a centrifugal drive mechanism. A liquid storage cavity is formed in each centrifugal sprayer, and thin yarn outlets are formed in the centrifugal sprayers. Each open rotary receiving device comprises a rotary shaft, a transmission device and a plurality of supporting arms. The supporting arms can form a bowl-shaped rotary face when rotating along with the rotary shafts. A plurality of the open rotary receiving devices are arranged. The centrifugal sprayers are distributed to form an annular shape in a center mode. The high-voltage power supply device and the centrifugal sprayers are connected with the open rotary receiving devices to form an electric field required by generation of solutions or melt jet flow. The centrifugal sprayers are provided with gas guide channels connected with the gas supply device so that auxiliary drawing air flow can be generated. Polymer which is jetted forms nanofibers through the electric field, the air flow and centrifugal force, compatibility to biological materials is better, the material application range is wide, and the obtained scaffold structures facilitate cell growth in tissue engineering application.

The invention discloses a preparation method of nickel inner electrode slurry for a multilayer chip ceramic capacitor. The method comprises the following steps of (1) uniformly mixing Ni powder without residual dispersing agent, BaTiO3 powder without residual dispersing agent, NiW alloy powder without residual dispersing agent, an organic solvent and a dispersing agent to obtain slurry A; (2) sanding the slurry A by using a sand mill to obtain slurry B; (3) adding a binder into the slurry B, and uniformly mixing to obtain slurry C; and (4) emulsifying the slurry C by using an emulsifying machine to obtain the nickel inner electrode slurry for the multilayer chip ceramic capacitor. The method is advantaged in that the nickel inner electrode slurry prepared by the method is high in dispersity, simple in preparation process and low in cost, industrial production can be realized, and a multilayer chip ceramic capacitor prepared from the nickel inner electrode slurry is few in inner electrode holes and good in electrical property.

The invention relates to a polypropylene antistatic composite material and a preparation method thereof, belonging to the technical field of polypropylene composite materials. The invention is characterized in that the polypropylene antistatic composite material contains conductive aluminum borate whiskers, and is AlB[w] / PP for short. The preparation method comprises the following steps: proportionally adding aluminum borate whiskers into distilled water, adding concentrated hydrochloric acid so that the acid concentration reaches 0.6-1.2 mol.L<-1>, proportionally adding tin tetrachloride and urea, heating the mixed liquor to 90-110 DEG C, reacting for 1-3 hours, filtering, washing to remove unreacted substances, drying the filter cake, and calcining to obtain conductive aluminum borate whiskers (AlB[w] for short); and proportionally mixing the AlB[w] and polypropylene, mixing, crushing, putting the mixture in a die, putting the die in a muffle furnace at 180-200 DEG C, keeping the temperature for 30-60 minutes, carrying out die forming in a flat vulcanizing machine, and depressurizing and stripping when the temperature of the die drops to below 60 DEG C, thereby obtaining the AlB[w] / PP.

The invention relates to a device for assembling built-in rotor permanent magnets of a permanent magnet motor with a long iron core. The device comprises a permanent magnet tool groove, a push plate,an ejector block, an oil hydraulic cylinder and a wooden support. The permanent magnet tool groove is formed in the wooden support. The front end of the permanent magnet tool groove is arranged on anassembling end face of a rotor. The push plate is arranged in the permanent magnet tool groove, and is connected with the permanent magnet tool groove in a sliding manner. The rear end of the push plate is in contact connection with the front end of an ejector block arranged in the permanent magnet tool groove, the rear end of the ejector block is connected with the oil hydraulic cylinder, and theoil hydraulic cylinder drives the push plate through the ejector block to push permanent magnets placed in the front portion of the permanent magnet tool groove into an iron core of the rotor along the permanent magnet tool groove. The push plate is pushed through the oil hydraulic cylinder to install the permanent magnets, repulsive force between the permanent magnets is easily overcome, and whole assembly is achieved. Because of the permanent magnet tool groove, the permanent magnets can be conveniently stored and directionally pushed, and a guiding effect on assembly of the permanent magnets is achieved.

This invention relates to a battery closure head method, including the following processes: providing a battery can and a matched head cover; use gripping device to fix the can and the head cover, the can spins around the axle wire, and the head cover spins around the same axle wire in negative direction, and gradually get near; when the spinning can contacts the head cover, the can and the head cover produce heat through friction, till to the plastic melting state, add opposite upset pressure on the can and the head cover at the same time of frictional heat, and make the can and the head cover joint. The advantages are good sealing and low cost.

The invention discloses a fast connecting device realizing heavy current charge and discharge; the fast connecting device comprises a fixed seat and a movable seat; the fixed seat comprises a fixed pedestal; a wedge form female end is fixed in the fixed pedestal; the movable seat comprises a movable pedestal; a wedge form male end is fixed in the movable pedestal; the wedge form male end inserts the wedge form female end, the wedge form female end wraps left, right and front end faces of the wedge form male end so as to form a mutually attached electric connecting structure; a buckling mechanism is arranged between the movable seat and the fixed seat, and pulled to push the movable seat to move to the fixed seat so as to form firm connection. The wedge form female end and the wedge form male end can realize multi-aspect electric connections via an insertion and matching mode, thus providing a much greater conductive contact area when compared with a conventional spring form; a spring buckle is arranged outside the connecting device so as to keep firm connection, thus enabling the wedge form female end to always firmly wrap the wedge form male end, keeping the electric connection stability, and realizing fast charging / discharging connection of heavy currents above 100A.

The invention discloses a box body structure with an opening and closing cover, which belongs to the technical field of box body structures, and comprises a lower case and an upper cover rotatably connected with the lower case, and the lower case and the upper cover are matched with buckles Assembly, the buckle assembly includes a first buckle and a second buckle, and also includes a button connected to the second buckle, a first magnet is installed on the inside of the button, and a box that is connected to the second buckle is installed in the box. A second magnet that repels each other; the button passes through the box body and moves back and forth to make the first magnet approach or move away from the second magnet; the second buckle is located at the side of the first buckle The inner side is engaged with the first buckle to close the box body; the first buckle is separated from the second buckle to open the box body. In this design, the button can be automatically reset when no external force is applied. It has a technological sense of design. When the cover is closed, press the button to make the first buckle and the second buckle snap together, avoiding the wear and aging of the buckle components, and the cost is low.

A method and system for cleaning a surface of a substrate after an etching operation includes determining a plurality of process parameters associated with the surface of the substrate. The process parameters define characteristics related to the surface of the substrate such as characteristics of the substrate surface to be cleaned, contaminants to be removed, features formed on the substrate and chemicals used in the fabrication operations. A plurality of application chemistries are identified based on the process parameters. The plurality of application chemistries includes a first application chemistry as an emulsion having a first immiscible liquid combined with a second immiscible liquid and solid particles distributed within the first immiscible liquid. The plurality of applicationchemistries including the first application chemistry are applied to the surface of the substrate such that the combined chemistries enhance the cleaning process by substantially removing the particulate and polymer residue contaminants from the surface of the substrate while preserving the characteristics of the features and of the low-k dielectric material through which the features are formed.

Based on a new concept, which is different from the conventional electric-power generating method, a stable electric power generation is enabled that requires less energy, exhibits a high efficiency and cleanness, and has no fear of exhaustion. There are included an electron supplier (20) that holds free electrons; an electron emitting port (30) that is located at the electron supplier (20) in such a manner that it is electrically conductive with the electron supplier (20); an electron pulling-in / releasing electrode (40) that is opposed to the electron emitting port (30) with an electric insulation field (F) intervening therebetween and to which electric fields are applied, thereby causing the electron pulling-in / releasing electrode (40) to pull in and release electrons; an electron acceptor (50) that receives the electrons released by the electron pulling-in / releasing electrode (40); ; and an electron absorption inhibiting means that inhibits the electron pulling-in / releasing electrode (40) from absorbing the electrons emitted from the electron emitting port (30). A positive voltage is applied to the electron pulling-in / releasing electrode (40), thereby causing the electron emitting port (30) to field emit electrons, which are then received by the electron acceptor (50) for collection.

The invention discloses a molding heat treatment method and device for materials. The device comprises a device body and a stirring device arranged in the device body, the stirring device comprises afirst cavity formed in the device body, a first sliding block capable of vertically sliding is arranged in the first cavity, a second cavity is formed in the first sliding block, a stirring head capable of rotating is arranged in the second cavity, and a connecting block fixedly connected to the lower end of the stirring head. Multiple additives need to be added when molding heat treatment is conducted, the additives generally need to be crushed to achieve the best using effect in order to achieve the best effect of molding heat treatment, crushing and grinding are manually conducted through some simple grinding devices in a traditional crushing mode, the working efficiency is low, and time and labor are saved. According to the device, the additives can be full-automatically ground and crushed, and the crushed additives can be automatically blown out.

The invention discloses a physical function rehabilitation training pile, and relates to the technical field of rehabilitation training. The physical function rehabilitation training pile comprises atraining unit and a control unit. The training unit includes a training pile mechanism and a plurality of wearing mechanisms. The training pile mechanism includes a chassis. A plurality of magnetic training devices are coaxially arranged on each positioning disc. A plurality of horizontal electromagnetic coils are evenly and separately installed on the front and rear sides of installation base bodies. A plurality of vertical electromagnetic coils are evenly and separately installed on the left and right sides of the installation base bodies. The wearing mechanisms include binding belts. Permanent magnets are installed in sealing tubes in a sliding seal mode. Air guide tubes are arranged on the left and right sides of the rear portion of the sealing tubes in a communication mode. The control unit comprises a control panel. The physical function rehabilitation training pile has the beneficial effects that patients can be trained with damping or guided exercise, bodies of the patients canbe fixed, during exercise, vibration and massage can be generated, and meanwhile, air flow can be generated to enhance gas flow and improve comfort.

The invention discloses a physical function rehabilitation training pile and relates to the technical field of rehabilitation training. The physical function rehabilitation training pile comprises a training unit and a control unit; the training unit comprises a training pile mechanism and a plurality of wearing mechanisms; the training pile mechanism comprises a chassis; a plurality of magnetic training devices are coaxially arranged on each locating disc; a plurality of horizontal electromagnetic coils are evenly installed on the front side and the rear side of an installation matrix; the wearing mechanism comprises an annular elastic band; a cylindrical installation shell is fixedly connected on the outer side edge of the elastic band; the front part and the rear part of the installation shell are both communicated with a gas guide tube; and the control unit comprises a control panel. The physical function rehabilitation training pile has the beneficial effects that: a patient implements the damping training or guide training, the body of the patient is immobilized, the physical function rehabilitation training pile vibrates and massages in the exercises, meanwhile, the air flowis produced to strengthen the air flow, and the comfort is improved.

The invention provides a manganese-containing sludge deep dehydration treatment agent which comprises basic aluminum chloride and polyquaternium, and the mass ratio of sludge to basic aluminum chloride to polyquaternium is 100: (3-10): (1.4-2.5); the sludge is manganese-containing sludge; the chain structure of the polyquaternary ammonium salt is a branched chain. The combination and proportion of the basic aluminum chloride and the polyquaternium are reasonable, sludge dewatering is facilitated, and it can be ensured that the manganese content in filtrate is reduced to the maximum extent; the whole treatment agent is neutral, and the loss of matched sewage treatment facilities is reduced in the sludge treatment process, so that the production cost is reduced; the dosage of the medicament is small, the market price fluctuation of the medicament is small, and the cost control is stable. The invention further discloses a manganese-containing sludge deep dehydration treatment method, steps are simplified, parameters are easy to control, and industrial production is easy to achieve.

The invention discloses a vase capable of reminding a user to add water and relates to an improvement of a vase structure. The vase comprises a supporting tube and a permanent magnetic base, wherein a membrane with micro-pores is arranged on the outer side of the supporting tube. The vase is characterized in that a drawing line is arranged at the center of the upper surface of the permanent magnetic base, the other end of the drawing line is connected with the vase, a permanent magnet is disposed at the bottom in the vase, a vase opening is arranged at the top of the vase, and poles of the bottom surface of the permanent magnet and the upper surface of the permanent magnetic base are identical. The vase is simple in structure and capable of reminding the user to add water to the vase timely.

The invention discloses a physical function rehabilitation training pile, and relates to the technical field of rehabilitation training. The training pile comprises a training unit and a control unit;the training unit comprises a training pile mechanism and a plurality of wearable mechanisms; the training pile mechanism comprises a chassis; a plurality of magnetic training devices are axially arranged on each positioning plate; a plurality of horizontal electromagnetic coils are respectively uniformly installed on front and back sides of a mounting base body; the wearable mechanisms comprisebinding belts; the middles of the binding belts are fixedly connected with cylindrical installing shells; permanent magnets are slidably in sealing arrangement inside the installing shells; air guiding pipes are communicated with the left and right sides of the back portion of each installing shell; the control unit comprises a panel. The physical function rehabilitation training pile has the advantages that the training pile can carry out damping training or guiding training on patients, human bodies of patients can be fixed, vibration massage can be performed during the training, airflow canbe synchronously generated to strengthen air flow, and the comfort is improved.

The invention discloses an auxiliary device and method for adding a secondary magnet to a loudspeaker. The device is used for assembling the secondary magnet into a main magnet module, and the main magnet module comprises U-shaped iron, a main magnet and a washer which are assembled; the device comprises a secondary magnetic guide gauge, the secondary magnetic guide gauge is of a hollow cylinder structure and comprises an upper guide portion, a middle positioning portion and a lower insertion portion, wherein the inner diameter of the guide portion is gradually decreased to be the same as thatof the positioning portion from top to bottom, the inner diameter of the positioning portion is matched with the outer diameter of the secondary magnet, and the outer diameter of the insertion portion is matched with the inner diameter of U iron. When the insertion part of the secondary magnetic guide gauge is inserted into the annular gap of the main magnetic module, relative positioning of thesecondary magnetic guide gauge and the main magnetic module is realized; and when the secondary magnet descends to the positioning part from the guide part of the secondary magnet guide gauge, relative positioning of the secondary magnet and the secondary magnet guide gauge is realized. According to the device, on the one hand, secondary magnetic jump can be avoided, and the assembly efficiency isimproved; on the other hand, the consistency and accuracy of the magnetic circuit can be improved.

The invention relates to a magnet arrangement (1) with a permanent magnet system comprising at least two ring-shaped magnet elements (2) arranged cylindrically symmetrically about the z-axis and stacked on top of each other in the z-direction and / or arranged concentrically, the ring magnet elements are composed of individual magnet segments (3) such that the magnetization directions of the individual segments in the rings extend parallel in the x-y plane perpendicular to the z direction, each The ring magnet elements (2) can be aligned relative to each other in the z-direction and have a Halbach magnetization structure, characterized in that the ring magnet elements are fixedly prefabricated before final assembly in the magnetic resonance system and their respective magnets The segments are immovably fixed to one another, the ring magnet elements are arranged displaceably relative to each other in the x-y plane, and the ring magnet elements are mounted rotatably and / or tiltably relative to each other.

The invention aims to provide a powder coating having magnetic polyester resin and a preparation method of the powder coating. The powder coating is prepared by a combination of the magnetic polyesterresin, TGIC, a levelling agent, a pigment, an inorganic filler and an auxiliary agent. Compared with a traditional powder coating, when electrostatic spraying is performed, the powder coating provided by the invention can overcome a Faraday cage effect, makes simple workpieces have a greatly improved coating rate when spray coating is performed, and makes complex workpieces, grooves and internalcorners coated effectively to form a complete coating film; and when the powder coating prepared from the magnetic polyester resin is electrostatically sprayed, after the front end of an electrostaticspray gun generates corona discharge, ferroferric oxide in the polyester resin is magnetic and forms magnetic attraction with a sprayed workpiece, the repulsive force of the Faraday cage effect is overcome, so that the powder coating is easily adsorbed onto the complex workpieces, the grooves and the internal corners, and the coating rate of the powder coating is greatly improved.

The invention relates to the technical field of preparation of polymer electrospun fibers by adopting an electrostatic spinning technique, and provides an electrostatic spinning device which comprises a liquid supply device, a liquid distribution device, a plurality of electrostatic spinning nozzles, a high-voltage power supply, an auxiliary gas generating device, a cylindrical guiding device and a double-net-cylinder collector, wherein the auxiliary gas generating device comprises an air feed pump, an air tube and a vent hood, and the vent hood is communicated with the air feed pump through the air tube, so as to form an auxiliary airflow channel; the plurality of electrostatic spinning nozzles are uniformly distributed in the vent hood; the cylindrical guiding device is arranged below the auxiliary gas generating device; the double-net-cylinder collector is arranged inside the cylindrical guiding device. The electrostatic spinning device introduces auxiliary airflow to promote jetting and stretching of jet flow, and utilizes the squeezing effect of the airflow to guide spinning nanofibers to perform multilayered three-dimensional deposition in the double-net-cylinder collector, so as to realize quick manufacturing of a columnar nano-fiber filter, and promote the application of the electrostatic spinning technique in the field of filtration.

The invention discloses a magnetic ring assembly fixture for a terahertz traveling wave tube periodic permanent magnet system, which comprises a base, a lower pole shoe groove arranged on the base, and a lower magnet arranged in the lower pole shoe groove and coaxial with the lower pole shoe groove The ring groove, the lower copper wire groove set in the lower magnetic ring groove and coaxial with the lower magnetic ring groove, the upper cover arranged on the base, the upper pole shoe groove arranged on the upper cover, and the upper pole shoe groove And coaxial with the upper pole shoe groove magnetic ring groove and the upper copper wire groove which is arranged in the upper magnetic ring groove and coaxially arranged with the upper magnetic ring groove. The beneficial effects of the present invention are: the present invention can improve the positioning accuracy of the half-ring magnetic block, and is beneficial to overcome the repulsive force of the half-ring magnetic block, significantly improves the assembly process of the magnetic ring, and improves the operability and convenience of assembly , reduces the difficulty of assembly, saves manpower and time, improves the efficiency of the TWT magnetic ring assembly process, and effectively avoids safety risks and hidden dangers in the assembly process.

The invention relates to a polypropylene antistatic composite material and a preparation method thereof, belonging to the technical field of polypropylene composite materials. The invention is characterized in that the polypropylene antistatic composite material contains conductive aluminum borate whiskers, and is AlB[w] / PP for short. The preparation method comprises the following steps: proportionally adding aluminum borate whiskers into distilled water, adding concentrated hydrochloric acid so that the acid concentration reaches 0.6-1.2 mol.L<-1>, proportionally adding tin tetrachloride andurea, heating the mixed liquor to 90-110 DEG C, reacting for 1-3 hours, filtering, washing to remove unreacted substances, drying the filter cake, and calcining to obtain conductive aluminum borate whiskers (AlB[w] for short); and proportionally mixing the AlB[w] and polypropylene, mixing, crushing, putting the mixture in a die, putting the die in a muffle furnace at 180-200 DEG C, keeping the temperature for 30-60 minutes, carrying out die forming in a flat vulcanizing machine, and depressurizing and stripping when the temperature of the die drops to below 60 DEG C, thereby obtaining the AlB[w] / PP.

The invention discloses an intelligent method and device for a material for molding thermal treatment. The device comprises a device main body and a stirring device arranged in the device main body, wherein the stirring device comprises a first cavity formed in the device main body, a first slide block capable of sliding up and down is arranged in the first cavity, a second cavity is formed in thefirst slide block, a stirring head is rotatably arranged in the second cavity, and the lower end of the stirring head is fixedly connected to a connecting block. Various additives need to be added during molding thermal treatment. In order to achieve the optimum effect of plastic thermal treatment, the additives need to be crushed ordinarily to achieve the optimum using effect. In a conventionalstirring and crushing mode, the additives are stirred and ground manually by means of some simple grinding equipment, so that the working efficiency is relatively low and it is time- and labor-wasting. The invention aims to provide the device capable of grinding and crushing the additives full-automatically and blowing the crushed additives automatically.