26results about How to "Free access" patented technology

The utility model belongs to the field of artificial fish reefs, and provides a rectangular pyramid artificial fish reef prefabricated part with asymmetrical staggered holes, which comprises a bottom plate and a rectangular pyramid pedestal. The top of the bottom plate is fixedly connected with the rectangular pyramid pedestal, the rectangular pyramid pedestal is of a rectangular pyramid structure with an inner cavity, the rectangular pyramid pedestal comprises a top surface and four side surfaces, the four side surfaces are inclined surfaces, and the tops of the four side surfaces are fixedly connected with the top surface; through holes are formed in the side faces, and the through holes in the two opposite side faces are arranged in a staggered mode. The holes with different hole diameters are formed, the inside of the reef body is kept communicated with a river water body, and the reef can adapt to the water level variation of a mountain river and meet the requirement for free entering and exiting of fishes with different body heights.

This invention discloses a system and method for testing the radio frequency interference (RFI) immunity performance of train vehicle equipment. The system includes a test terminal, a mobile terminal, an adjustable bracket, an antenna, and a field strength probe. The mobile terminal houses a power supply and an immunity signal generator. The power supply powers the test terminal and the immunity signal generator, and the immunity signal generator generates and amplifies the RF modulation signal. The test terminal is located on one side of the top of the mobile terminal. This system and method for testing the RFI immunity performance of train vehicle equipment utilizes a mobile terminal connected to the test terminal, antenna, field strength probe, and immunity signal generator to perform RFI immunity testing. The immunity signal generator simulates the RF interference environment, eliminating the need for an anechoic chamber. Testing can be conducted directly within the train carriages after the train assembly is completed and all functions are properly debugged, improving the overall mobility and portability of the testing system.

The utility model discloses a split type battery pack upper shell, the upper shell comprises a first cover plate and a second cover plate, the first cover plate and the second cover plate are detachably connected, one side of the second cover plate is provided with a lap joint edge, the lap joint edge is arranged above one side of the first cover plate, a sealing structure is arranged between the lap joint edge and the first cover plate, and the lap joint edge and the first cover plate are detachably connected. The split type battery pack upper shell is simple in structure and convenient to install, the number of fasteners is reduced, and the manufacturing cost is reduced.

The utility model relates to the technical field of waterproof devices, in particular to a waterproof device of a module box body, which comprises a module body, a box body support is arranged on one side of the module body, a control box is arranged in the box body support, a waterproof silica gel ring is arranged on one side of the control box, and a ventilation valve is arranged on the other side of the control box. According to the utility model, through the arrangement of the waterproof device and the ventilation device, when the module, the box body and the control box are installed outdoors, the waterproof and dustproof effects are achieved, ventilation is achieved, and the internal pressure of the control box is adjusted to be balanced.

The utility model discloses a portable high-density electrical prospecting instrument storage device, which is suitable for the electrical prospecting field, and comprises a carrying box and an instrument body fixedly installed in the carrying box, the lower part of the front part of the carrying box is slidably connected with a sliding frame through an opening, the bottom of the inner cavity of the carrying box is provided with a sliding chute, and the sliding chute is provided with an opening. The sliding frame is operated, the sliding frame drives the rotating rod to rotate through the tooth plate and the gear, the rotating rod drives the winding rod to rotate through the first bevel gear and the second bevel gear so that the straps can be wound up or extended to be convenient to use, and after the two straps extend from the carrying box, the two straps can be conveniently taken out of the carrying box. The carrying box is carried on the back so that the electrical prospecting instrument can be easily carried, the high-density electrical prospecting instrument can be carried by at least three persons originally, now, the high-density electrical prospecting instrument can be easily carried by one person, and the working efficiency is greatly improved; and the sliding frame is moved out of the carrying box to facilitate construction while the straps are rolled up and wound on the rolling rod.

The invention discloses a solar water evaporation adsorption material as well as a preparation method and application thereof, and belongs to the technical field of wastewater treatment. Stirring and reacting the polydopamine modified zeolite imidazate framework material with the pre-oxidized nano cellulose solution and the polyvinyl alcohol solution to form a viscous liquid, transferring the viscous liquid into a mold, and sequentially performing standing and bubble removal, freeze forming and freeze drying to obtain the polydopamine modified zeolite imidazate framework material. The solar water evaporation adsorption material is formed by a zeolite imidazate framework material which is formed by the pre-oxidized nanocellulose and the polyvinyl alcohol and is modified by loading polydopamine on a dual-network structure. The composite material has the characteristic of high stability, is endowed with a photo-thermal conversion function and rare earth ion adsorption activity at the same time, can promote water evaporation and accelerate mass transfer of rare earth ions in an aqueous solution and combination of adsorption active sites by utilizing solar radiation so as to accelerate adsorption kinetics of the rare earth ions, and can be used for rare earth wastewater treatment. The method is especially suitable for low-concentration rare earth wastewater treatment.

The utility model discloses a kind of metal ceramic packaging appearance semiconductor discrete device manual limiting tool, comprising: fixed frame;Two groups of pressing jaw, two groups The pressing jaw is respectively arranged on the two sides of the fixed;Article placing assembly, the article placing assembly is arranged on the fixed frame, the article placing assembly can ascend or descend along vertical direction, and the article placing assembly can be placed with the jig of workpiece;Driving assembly, the driving assembly is arranged in the fixed frame with damping rotation, and is engaged with the article placing assembly transmission, to be suitable for driving the article placing assembly ascending or descending, so that the jig on the article placing assembly is in abutment with two groups The pressing jaw is away from two The pressing jaw;When the driving assembly rotates towards clockwise direction, the article placing assembly ascends along vertical direction, so that jig is in abutment with two groups The pressing jaw, when the driving assembly rotates towards counterclockwise, the article placing assembly descends along vertical direction, so that jig is away from two groups The pressing jaw.

This invention relates to the field of biomedicine, and in particular to a composition with therapeutic effects on arthritis, its preparation method, and its application. The invention provides a composition with therapeutic effects on arthritis, which synergistically enhances the therapeutic effect of shikonin by actively targeting M1 subtype macrophages and regulating their metabolic pathways. Simultaneously, shikonin, as an AMPK activator, further enhances the cytotoxic effect of macrophages, forming a positive feedback loop and enhancing the remodeling of the immune microenvironment. Therefore, it can effectively delay and control the progression of rheumatoid arthritis.

The utility model discloses a protective shell for emergency energy storage equipment, which comprises a shell body, and a plurality of heat dissipation grooves are formed in the surface of the shell body. A plurality of baffles are fixed to the surface of the shell, fixing frames are fixed to the front side and the rear side of the inner wall of the shell, waterproof breathable films are fixed to the surfaces of the fixing frames, a fan is fixed to the bottom of the inner wall of the shell, an air inlet is formed in the bottom of the shell, and a connecting shell is fixed to the surface of the shell; rotating shafts are fixed to the two sides of the connecting shell, connecting plates are rotationally connected to the surfaces of the rotating shafts, protective cover plates are fixed to the surfaces of the connecting plates, and protective shells are fixed to the front side and the rear side of each protective cover plate. According to the utility model, rainproof protection can be carried out on the wiring socket on the surface of the housing, and rainwater can be prevented from entering the housing through the heat dissipation grooves, so that the problem that the housing has poor rainwater protection performance when the emergency energy storage equipment is used outdoors at present is solved.

The invention discloses an industrial waste sulfuric acid purification device and a purification method thereof, comprising a purification tank, a sulfuric acid inlet, a sulfuric acid outlet, and also comprising: an activated carbon containing component, the activated carbon containing component comprising a swing shaft and a flip containing plate, the flip containing plate is hollow and filled with activated carbon and a gear, and a moving part is meshed on the outer side of the gear; an external docking component, a connecting part is arranged on the side of the flip containing plate, and the external docking component comprises a docking part arranged on the outer side of the purification tank; an anti-vibration component, comprising a carrier plate arranged at the bottom of a guide rail, and a vibration table that can move up and down is arranged on the upper end of the carrier plate. The invention can not only use waste acid to purify and recycle lithium iron phosphate battery powder, but also use activated carbon to reduce alkali consumption during neutralization, and the activated carbon can be easily recycled and regenerated after use.

The utility model discloses a high-speed emulsification tank convenient for feeding, which comprises a tank body and a vertical conveying cylinder, and the vertical conveying cylinder is fixedly mounted on one side of the tank body. The high-speed emulsifying device has the beneficial effects that the separating plate and the adhesive tape are adopted, during high-speed emulsifying, liquid is injected into the tank body through the liquid inlet pipe, a solid surfactant is temporarily stored in the stock bin, and the third driving motor drives the shaft rod to rotate so as to drive the separating plate to rotate; solid surfactants flowing into the space between the partition plates from the stock bin are put into the tank body, the first driving motor drives the emulsifier to rotate at a high speed for emulsification, and rubber strips on the edges of the partition plates abut against the inner wall of the feeding cylinder in a sliding mode to form a sealing structure; the feeding device is simple in structure and convenient to operate, gas in the tank body or outside gas is prevented from freely entering and exiting the tank body in the feeding process, good airtightness is guaranteed, the emulsifying efficiency is improved, meanwhile, the feeding amount can be effectively controlled by controlling the number of rotation turns of the shaft rod, and workers can feed conveniently.

The invention provides a method and a device for selecting parameters of a frequency division type disconnector. The method comprises the following steps: acquiring initial physical parameters; electric field calculation and magnetic field calculation are carried out on the initial physical parameters to obtain electromagnetic parameters, a heat source item and electromagnetic force are calculated according to the electromagnetic parameters, and the electromagnetic parameters comprise electric field intensity, current density and magnetic field intensity; solving an energy conservation equation, a mass conservation equation and a momentum conservation equation simultaneously under the temperature field boundary condition and the flow field boundary condition by using the heat source item and the electromagnetic force to obtain a temperature field, a velocity field and a pressure field; and selecting target parameters of the frequency division type disconnector according to the temperature field, the velocity field and the pressure field, wherein the target parameters comprise a discharge gap distance, an inductance value of a frequency division inductor, a spark gap distance and a resistance value of a heating resistor. According to the invention, the problem of low performance of the disconnector caused by lack of system selection of parameters of the frequency division type disconnector in the prior art is solved.

The application discloses a solar water evaporation and adsorption material, a preparation method and application thereof, and belongs to the technical field of wastewater treatment. A polydopamine modified zeolitic imidazolate framework material is stirred and reacted with a pre-oxidized nanocellulose solution and a polyvinyl alcohol solution to form a viscous liquid, the viscous liquid is transferred into a mold, and static bubble removal, freeze forming and freeze drying are sequentially performed, so that a solar water evaporation and adsorption material formed by pre-oxidized nanocellulose and polyvinyl alcohol and loaded with the polydopamine modified zeolitic imidazolate framework material is obtained. The solar water evaporation and adsorption material has the characteristics of high stability, and simultaneously has photo-thermal conversion function and rare earth ion adsorption activity. Solar radiation can be used to promote water evaporation, accelerate the mass transfer of rare earth ions in the aqueous solution and the combination of the adsorption active sites, so that the adsorption kinetics of the rare earth ions is accelerated, and the solar water evaporation and adsorption material can be used for rare earth wastewater treatment, especially low-concentration rare earth wastewater treatment.

The utility model provides a pressure accumulation type elastic bag body control mechanism which comprises a support, a pipe component, an elastic bag body, a displacement driving device and a pump body, the pipe component is transversely or obliquely arranged upwards in a sliding mode relative to the support, the pipe component is provided with a hollow pipe body, a plurality of through holes are formed in the end portion of the pipe body, the elastic bag body is arranged on the outer side of the pipe body in a sleeved mode and wraps the through holes, and the displacement driving device is arranged on the pump body. The open end of the elastic bag body is sealed relative to the pipe body and fixedly arranged, the displacement driving device is used for driving the pipe component to move towards the outer end of the support, the end, provided with the through hole, of the pipe body is located outside the edge of the end of the support, and the pump body is used for inputting fluid into the pipe body or pumping out fluid in the pipe body. According to the pressure accumulation type elastic bag body control mechanism, fluid is buffered through the side wall of the inner cavity of the pipe body.

The invention relates to the technical field of desilting devices, and discloses an urban drainage closed conduit silt cleaning device which comprises a shell, and a collecting opening is formed in the front side of the shell; the cutting blocks are connected to the bottom of the collecting opening in a sliding mode, each cutting block is of a wedge-shaped structure, and the tip ends of the cutting blocks face the collecting opening; the driving mechanism is installed on the shell and used for driving the cutting blocks to move in the front-back direction, and every two adjacent cutting blocks slide in the opposite direction; and the pumping mechanism is installed in the shell, the input end of the pumping mechanism communicates with the collecting opening, and the pumping mechanism is used for collecting sludge from the input end of the pumping mechanism and discharging the sludge from the output end of the pumping mechanism. In addition, the invention further discloses a using method based on the urban drainage closed conduit sludge cleaning device. The sludge loosening effect can be achieved, sludge is conveyed to the ground through the pumping mechanism, and physical output of operators is reduced.

The present invention provides an electroporation device and its application, the electroporation device comprises a positive electrode unit and a push-pull slide; the positive electrode unit comprises a connecting handle, a receiving portion and a positive electrode body; a push-pull slide is installed on the connecting handle, and the push-pull slide can move along the length direction of the connecting handle; the inner hollow of the receiving portion forms a receiving cavity, and the first end of the receiving portion is connected to the connecting handle; the material of the positive electrode body is a shape memory alloy, the first end of the positive electrode body passes through the receiving cavity and is arranged in the connecting handle, and the first end of the positive electrode body is connected to the push-pull slide; the second end of the positive electrode body has a disc-shaped spiral structure. One technical effect of the present invention is that the design is reasonable, not only can the micro-electric field be introduced into the eye, and the precise electroporation of the retina is realized, but also the influence range of the electric field is reduced, the damage to other non-target tissues of the eyeball is reduced, and the surgical risk is reduced.

The invention discloses a gas-liquid separator, which relates to the technical field of gas-liquid separation. The first shell has a water inlet mechanism running through its outer surface, and a water outlet pipe running through one side of the first shell away from the water inlet mechanism. By setting the water inlet mechanism, a gas-liquid mixture that needs to be separated from the gas-liquid can be poured into the inner cavity of the first shell, and the water flow can be guided to the inner cavity of the purification mechanism. By setting the water outlet pipe, the liquid after the gas-liquid separation in the inner cavity of the first shell can be discharged, so that the liquid in the inner cavity of the first shell can be discharged. The inner wall of the first shell is fixedly connected with a purification mechanism. By setting the purification mechanism, harmful substances and irritating gases in the gas-liquid mixture can be purified, and then when the gas and liquid are discharged, the harmful substances and irritating gases in the gas and liquid can be prevented from leaking out to pollute the external environment, thereby achieving the effect of collecting the liquid attached to the inner wall.

An experimental device for studying feeding and oviposition preferences of warehouse insects to scattered storage objects comprises an experimental box and a selection platform arranged in the box, and the outer edge of the selection platform is attached to the inner wall of the experimental box so that a test space can be formed above the selection platform; the selection platform comprises a concave insect placing area and a sample distribution area surrounding the insect placing area, the sample distribution area is provided with a plurality of storage object sample grooves which are distributed at intervals in the circumferential direction of the insect placing area, the groove walls of the storage object sample grooves are inclined planes, and the groove opening area of the storage object sample grooves is larger than the groove bottom area; the upper surfaces of the insect placing area and the sample distribution area are provided with protrusions facilitating crawling of warehouse insects. An insect releasing cylinder capable of moving up and down penetrates through a box cover of the experiment box, the upper end of the insect releasing cylinder extends out of the box cover and is provided with a cylinder cover, and the lower end of the insect releasing cylinder is open and can abut against the insect containing area after moving downwards. According to the invention, the stored insect pests can be allowed to freely contact and select different foodstuffs in the experiment process, so that the feeding and oviposition preference of the stored insect pests can be more accurately researched.

The utility model relates to the technical field of strength detection for concrete slabs, and discloses a strength detection device for construction engineering concrete slabs, which comprises a detection box, a motor is arranged above the detection box, the output end of the motor penetrates through the detection box and is fixedly provided with a screw rod, two groups of sliding grooves are arranged at the lower part in the detection box, and the two groups of sliding grooves are arranged in the detection box. The outer portion of the screw rod is in threaded connection with a connecting block and a connecting plate, the connecting block is located above the connecting plate, two sets of fixing columns are fixedly connected to the lower portion of the connecting plate, pressure plates are fixedly connected to the lower portions of the two sets of fixing columns, and protective shells are installed on the peripheries of the lower portions of the pressure plates. A detection head is arranged in the middle of the lower portion of the pressure plate, sliding blocks are connected into the two sets of sliding grooves in a sliding mode, the situation that concrete blocks splash in the detection process can be effectively prevented, concrete plates needing to be detected can be effectively replaced and cleaned, and the practicability of the device is improved.

The invention provides an electroporation device and application thereof. The electroporation device comprises a positive electrode unit and a push-and-pull slip sheet, the positive electrode unit comprises a connecting handle, an accommodating part and a positive electrode body; a push-pull sliding piece is installed on the connecting handle and can move in the length direction of the connecting handle. The interior of the containing part is hollow to form a containing cavity, and the first end of the containing part is connected with the connecting handle; the positive electrode body is made of shape memory alloy, the first end of the positive electrode body penetrates through the containing cavity and is arranged in the connecting handle in a penetrating mode, and the first end of the positive electrode body is connected with the push-pull sliding piece; the second end of the positive electrode body is provided with a disc-shaped spiral structure. The micro-electric field electroporation device has the advantages that the design is reasonable, the micro-electric field can be introduced into the eye, accurate electroporation of the retina is achieved, the influence range of the electric field is reduced, damage to other non-targeted tissues of the eyeball is reduced, and the surgical risk is reduced.

The utility model relates to a middle mower stubble height adjusting mechanism, a middle mower and a tractor, the middle mower stubble height adjusting mechanism comprises a mounting plate used for being fixedly connected to the tractor, the mounting plate is rotatably connected with an adjusting seat, and the adjusting seat is fixedly connected with the middle mower stubble height adjusting mechanism. The adjusting seat is fixedly connected with an adjusting part used for being rotationally connected to a tractor, the adjusting seat is provided with at least two steps which are connected with each other and sequentially located at different heights, each step is used for being supported below a lifting mechanism, and the supporting direction is parallel to the rotating axis of the adjusting part. The middle mower can solve the technical problems that the height of an existing middle mower cannot be adjusted, and diversified requirements of users for achieving different stubble cutting heights cannot be met.

The invention discloses a porous electrode and a preparation method thereof, the porous electrode comprises a current collector and an active material layer arranged on at least one surface of the current collector, and the active material layer comprises an active material, a binder and an acid etching conductive agent; wherein the acid etching conductive agent comprises an acid etching carbon nano tube or an acid etching carbon fiber; a plurality of holes are formed in the tube wall of the acid etching conductive agent, the hole diameter of each hole is 1-5 nm, and the porosity of the tube wall is 60-70%. Compared with the prior art, the porous electrode provided by the invention uses the acid etching conductive agent, so that the pores of the porous electrode are stable and are not easy to disappear, the manufacturing process is simple, the cost is relatively low, the ion transmission capability of the pole piece in the longitudinal direction can be improved, and meanwhile, the ion transmission in the transverse direction is also promoted; the distribution of alkali metal ions in the pole piece is more uniform, and the risk of metal precipitation on the surface of the pole piece is reduced, so that the fast charging performance of the secondary battery is improved.

The utility model relates to access control device technical field, concretely is a kind of multifunctional access control device, including frame, the frame one end is connected with rotary door by rotating rod, rotating rod one end is fixedly installed with driving device, the driving device lower end is fixedly installed with carousel, the carousel rotation is connected with base;When staff opens driving device, rotating rod can be driven to rotate, to drive rotary door fixedly connected with rotating rod to rotate and open, and then personnel can freely enter and exit, when driving device fails, staff can manually pull handle, carousel can be driven to rotate, to drive driving device fixedly connected with carousel to rotate, and then rotating rod fixedly connected with driving device can be driven to rotate, and then rotary door fixedly connected with rotating rod can be rotated and opened, avoid when driving device fails, the influence caused to personnel's entry and exit.

The present application relates to the technical field of textiles, in particular to an antibacterial fabric based on graphene-polyamide composite fiber and a production process thereof. The present application overcomes the problem of poor antibacterial performance and durability of the antibacterial fabric. In the present application, modified graphene, Ag / ZnO nanoparticles and polyamide masterbatch are melt-extruded to obtain modified polyamide fibers; composite ultraviolet-resistant agent, modified antioxidant, modified moisture-absorbing agent and polyester masterbatch are melt-extruded to obtain modified polyester fibers; finally, the modified polyamide fibers, the modified polyester fibers, cotton fibers and bamboo fibers are mixed, twisted, heat-set and blended to obtain the antibacterial fabric. In the present application, the modified graphene and the Ag / ZnO nanoparticles can synergistically improve the antibacterial performance of the antibacterial fabric; the polyamide masterbatch, the polyester masterbatch and the cotton fibers can jointly improve the mechanical properties of the antibacterial fabric; the composite ultraviolet-resistant agent, the modified antioxidant, the modified moisture-absorbing agent and the bamboo fibers can improve the ultraviolet resistance and moisture-absorbing and air-permeability of the antibacterial fabric.

The utility model relates to the technical field of decoration engineering tools, and discloses a ceramic tile clamping tool for decoration engineering, the middle of the top of a clamping seat is fixedly connected with a grip, the periphery of the clamping seat is provided with a telescopic groove, the clamping seat is provided with an adjusting mechanism through the telescopic groove, and the outer side of the adjusting mechanism is provided with a fastening mechanism. According to the ceramic tile clamping tool for the decoration engineering, firstly, a first threaded rod is rotated towards the outer side of an adjusting plate, a limiting block is separated from a baffle, at the moment, due to the fact that a distance exists between the limiting block and the baffle, the adjusting block can not be limited by a limiting groove, and therefore an adjusting plate can easily and freely enter and exit from a telescopic groove; and after the clamping plate is attached to the size of the ceramic tile, a first threaded rod box rotates on the inner side of an adjusting plate at the moment, a limiting plate is inserted into the middle of a baffle, and a limiting block can only be tightly inserted into a limiting groove, so that the purpose of preliminarily clamping the ceramic tile can be achieved, and operation is easy and convenient.