273results about How to "Free disassembly" patented technology

The invention discloses a device and a method for testing shear performance of an asphalt mixture. The shear strength and shear fatigue life of the asphalt mixture under different temperature conditions are tested by adopting a circular ring shearing test. The method comprises that: before the test, an asphalt mixture test-piece is subjected to heat preservation in a temperature control box at a preset test temperature for over 6 hours; in the test, the asphalt mixture test-piece is arranged on a circular ring, and is loaded through a pressure head to cause shear failure so as to form a conical shear failure surface, and the shear strength of the asphalt mixture is calculated; and according to requirements, a specific load in a range of 0.1 to 0.9 time of failure load is selected to perform a repeated loading fatigue test on parallel test-pieces, the loading waveform is sine waves, the frequency is 10Hz, and the shear fatigue life of the asphalt mixture at different stress ratios is read out. The test method has important significance for studying the shear performance of the asphalt mixture and designing and evaluating the material of the asphalt mixture.

The invention discloses a constant-pressure multiple-effect evaporation condensation sea water desalination device with an air medium, which mainly comprises a low-and-medium temperature heat source (13), a first-stage heating evaporator (14), an evaporation condenser (4) and a last-stage condenser (8). The first-stage heating evaporator (14), the evaporation condenser (4) and the last-stage condenser (8) are installed in sequence closely, and the low-and-medium heat source (13) and the first-stage heating evaporator (14) are connected together. The first-stage heating evaporator (14), the evaporation condenser (4) and the last-stage condenser are all formed by combining a plurality of heat exchange plates which are arranged from left to right in sequence, and a gap is reserved between every two adjacent heat exchanging plates to form a flow channel for heat exchange fluid. By adopting the plate-type heat exchange principle, the sea water desalination device realizes multiple-effect air humidification and dehumidification evaporation and condensation for sea water desalination under constant pressure. Heat and moisture transfer is performed between sprayed sea water and overflowing air, and the condensation latent heat of fore effect heat and moisture air can be absorbed at the same time, and therefore, energy recovery is realized and the fore effect heat and moisture air can be condensed to obtain fresh water.

The invention discloses a light-compensating assemble type household vegetable garden planting device, and relates to the technical field of indoor planting. The device is characterized by comprising a photovoltaic panel, a storage battery, a microcomputer controller, a minitype pump, an LED light-compensating lamp, an ultraviolet sterilization lamp and a planting table, wherein the photovoltaic panel is electrically connected with the storage battery; the storage battery is electrically connected with the microcomputer controller; the microcomputer controller is electrically connected with the minitype pump, the LED light-compensating lamp and the ultraviolet sterilization lamp through conducting wires respectively; the planting table comprises a trough and a frame body; the frame body is arranged at the upper part of the trough; the minitype pump is arranged in the trough; the water outlet nozzle of the minitype pump is positioned at the top of the frame body; the LED light-compensating lamp and the ultraviolet sterilization lamp are arranged at the top of the frame body or the lateral side of the frame body. The device can realize efficient continuous operation through solar energy and implement automatic watering, is convenient for use, environment-friendly and healthy, can improve the indoor environment for planting vegetables, and is small in occupied area, convenient for gardening, large in available planting area, and good in vegetal growth.

The invention discloses an intelligentized intra-row and intra-plant weeding device for crops in a seedling stage. The intelligentized intra-row and intra-plant weeding device for the crops in the seedling stage comprises a frame, travelling wheels are arranged under the frame, the frame is provided with a power driving mechanism, an intra-row weeding mechanism, an intra-plant weeding mechanism and an intelligent electronic control system, wherein the power driving mechanism is connected with the intra-row weeding mechanism and the intra-plant weeding mechanism in a transmission mode respectively, and the intelligent electronic control system is connected with the intra-plant weeding mechanism through wires. According to the intelligentized intra-row and intra-plant weeding device for the crops in the seedling stage, the intra-row weeding mechanism and the intra-plant weeding mechanism are both compact in structure, flexible in movement and convenient to dismantle and install, the intra-plant weeding mechanism achieves axial free extension of intra-plant weeders by utilizing electromagnetic induction effects, so that the mechanical structure is greatly simplified, and the intelligent control of intra-plant weeding is achieved in combination with an image sensor, a distance measuring sensor and an AT89C52 chip.

A measurer for measuring the dynamic position of the gravitational center of human body is composed of a force measuring platform with several supporting columns, pressure sensors, data acquisition card, and PC. Its measuring method is also disclosed.

The invention discloses a vibrating table testing method suitable for rock and soil slopes and a model box, and belongs to the field of experimental equipment. The vibrating table testing method comprises the following steps: determining the type of a to-be-tested model slope, and assembling the model box according to the type; building a slope die body corresponding to the type by utilizing the assembled model box; standing the built slope die body in the model box for 1 to 2 days; installing the model box with the slope die body by utilizing a vibrating table, and loading a corresponding seismic waveform. The model box is formed by assembling a base, an enclosure structure, a trapezoidal framework, horizontal stiffening ribs, a longitudinal stiffening rib, a hollow square pipe and a wall body. According to the model box disclosed by the invention, the functions of a laminar shear model box and a rigid model box can be respectively realized by regulating the tightness of the hollow square pipe arranged at the rear side of the model box, the model box can be respectively applied to vibrating table testing of soil and rock slopes, the side wall body is transparent, the slope die body can be conveniently manufactured, the damage situation of a test can be observed, and meanwhile, the model box has the characteristics that disassembling and assembling can be freely carried out, and the operation is flexible.

The invention discloses a rapid compressor experimenting platform for a laboratory. The rapid compressor experimenting platform comprises a combustion chamber unit, a brake cylinder unit and a driving cylinder unit. The brake cylinder unit comprises a brake cylinder body, a brake cylinder rear cover and a brake piston, a first connecting rod is connected between the brake piston and a combustion chamber piston, and the lower stop point position of the brake piston is determined by the position of the brake cylinder rear cover. The driving cylinder unit comprises a driving piston, and a second connecting rod is connected between the driving piston and the brake piston. A plurality of compression ratio adjusting gaskets capable of being arranged between the brake cylinder rear cover and the brake cylinder body are arranged. Each compression ratio adjusting gasket is composed of a pair of cohesive semicircular gasket bodies, and the total thickness of the arranged compression ratio adjusting gaskets is determined according to the lower stop point position of the combustion chamber piston under the premise that the upper stop point position of the combustion chamber piston is kept unchanged. According to the rapid compressor experimenting platform for the laboratory, the gaskets are additionally arranged at the brake cylinder rear cover to change the initial position of the combustion chamber piston and maintain the volume of a clearance unchanged so as to adjust the compression ratio.

The invention relates to a range hood. A conventional range hood does not have a function of sterilization, and in a kitchen, a higher-efficiency disinfection and sterilization device is required for preventing diseases from entering via a mouth. The range hood includes a range hood body, an ultraviolet disinfection lamp module, an infrared sensing probe module, an ozone generator module, an ozone probe module, a smoke and combustible gas probe module, a timer voice module, a PM 2.5 probe module, a multifunctional WiFi display screen, a fan module, an electronic cockroach expelling device module, and a preset upgrade module. The range hood timingly starts an ultraviolet lamp and an ozone generator late at night, an ozone probe of the machine can monitor the ozone concentration, and after completion of the disinfection operation, the range hood is started to discharge ozone. The indoor air quality is maintained. The infrared probe induces moving human bodies and pets, the ultraviolet disinfection lamp is closed, the lamp is automatically turned on to sterilize after people go away. A smoke probe can automatically discharge gas after the combustible gas is checked. A timing device makes the machine run automatically late at night, and the voice module is used for reminding operation and alarming. The function modules are in arbitrary combination, customers freely chooses, and the cost is reduced. The purification effect of the range hood is again promoted with adopting of an electrostatic blade group.

A formaldehyde detector (10) provided with a detecting reagent which develops a color in response to formaldehyde. The detector (10) comprises a detection element (30) having a base material (31) which constitutes an optical waveguide transmitting light via repeated total reflection and a mesoporous layer (32) which serves as the surface of the base material (31), is formed by laminating on at least a part of the light reflecting face and carries the detecting reagent as described above. Furthermore, it has a light emitting material which emits an incident light on the base material (31) and a light receiving material which receives the light outgoing from the base material (31). Furthermore, it has a signal processing section wherein the light signal from the light receiving material is received and a change in the optical properties based on the color development due to the reaction of formaldehyde with the detecting reagent is detected to thereby detect formaldehyde and measure its concentration from the change in the optical properties.

The invention relates to an automatic layered sludge collection device which comprises a sampling base plate, wherein a T-shaped device handle is fixedly arranged on the upper surface of the sampling base plate; a group of centrosymmetric spiral sleeve bases are fixedly arranged on the lower surface of the sampling base plate; hollow sludge collection pipes are spirally connected below the spiral sleeve bases; each sludge collection pipe consists of a plurality of sludge collection pipe units which are spirally connected with one another end to end; two semicircular backflow-prevention stop sheet are arranged in the bottom end of each sludge collection pipe unit. The automatic layered sludge collection device is simple in structure and convenient to operate and can simultaneously collect a plurality of samples and store the original thicknesses and the layered structures of deposits; the sampling base plate and the sludge collection pipes can be freely mounted and dismounted; the automatic layered sludge collection device is convenient and easy to use and can be replaced and cleaned quickly; the production cost is saved.

A glass window with a window sash capable of being rotated freely comprises a window sash rotation device composed of a glass window inner frame, a rotary pin, glass limiting edges and glass fixing switches. According to the glass window inner frame, glass is fixed through glass clamping edges on the inner side of edge frames, and the glass clamping edges are provided with slots used for attaching the glass limiting edges when the glass window inner frame rotates to the original position; the rotary pin is arranged in the center of the upper edge frame and the center of the lower edge frame of the glass window inner frame; the glass limiting edges are fixed to the inner sides of the upper frame edge and the lower frame edge of a glass window outer frame and are parallel with the front side of the glass window outer frame; the glass fixing switches are fixed to the left frame edge and the right frame edge of the glass window outer frame respectively. The glass window solves the technical problem that dirt on the back side of a window is difficult to clean, and enables the dirt on the back side of the window to be cleaned simply and conveniently at any time.

The invention belongs to the technical field of endoscope detection, and especially relates to an endoscope detection system. The endoscope detection system is characterized in that the system comprises an endoscope clamping mechanism and a target clamping mechanism, the endoscope clamping mechanism comprises an endoscope fixing support, an endoscope, a support bench, an integrating sphere and a two-dimension adjusting mechanism, the endoscope fixing support is fixedly connected with the endoscope, the endoscope stretches into the integrating sphere, the integrating sphere is arranged on the support bench, and the support bench is arranged on the two-dimension adjusting mechanism, and is in slip connection with the two-dimension adjusting mechanism. The endoscope detection system is advantaged in that a mirror rod is prevented from pitching during the test, the optical path keeps consistent, clamping requirements of various special-shaped mirrors except rigid straight-rod endoscopes can be satisfied, the endoscope detection system is comprehensive in measurement and high in measurement efficiency, and the endoscope can be positioned accurately.

The present invention discloses a flat plate turbulence type dynamic membrane separation device. The device comprises an upper cover plate and a lower cover plate. Both ends of the upper cover plate are respectively provided with a liquid inlet and a concentrated liquid opening. The upper cover plate is provided with a zigzag groove, which forms a reciprocating baffling flow type flow channel. The head and the tail of the groove are respectively connected with the liquid inlet and the concentrated liquid opening. A plurality of turbulence components are arranged inside the groove. A filtrate outlet is arranged below the lower cover plate or on the side surface of the lower cover plate. A support plate is arranged above the lower cover plate. A membrane is arranged above the support plate.A screen is arranged above the membrane. The present invention further discloses a membrane separation method, wherein the flat plate turbulence type dynamic membrane separation device is combined with the coagulation process by the method. The flat plate turbulence type dynamic membrane separation device of the present invention has characteristics of simple structure, effective release of membrane pollution, flexible operation and control, easy maintenance and low energy consumption. With the membrane separation method of the present invention, the membrane pollution can be effectively released, and the effluent quality can be significantly improved, such that the effluent is applicable for the engineering application.

The invention relates to an external-tying universal type roller-skating elastic device, which is characterized by comprising an adjustable nylon binding belt, an upper bottom, a screwing-in type spring clamp, an extruding type spring clamp, a middle-convex type spring, a lower bottom, a wheel groove, a spring buffering wheel, an outward-inclining trapezoidal rubber spring buffering pad, a nylon buckle, a belt buckle shaped like a Chinese character 'ri' (meaning sun), a binding belt, a screwing-in door, a fastening bolt, an extruding groove, a screwing-out port, an extruding plug, a bolt, a nut resilient sheet, a spring fixing shaft, a buffering spring, a spring groove, a shaft, a pulley, a shaft fork and a cross plate, wherein the adjustable nylon binding belt is fixed on the upper bottom; the middle-convex type spring is fixed between the upper bottom and the lower bottom by the screwing-in spring clamp and the extruding type spring clamp; the middle of the lower bottom is fixedly provided with the wheel groove with the spring buffering wheel, and the periphery of the lower bottom is provided with the outward-inclining trapezoidal rubber spring buffering pad in an attaching manner. The elastic device has the advantages that the stability and the shock-absorbing performance are good, the function is strong, the use is convenient, the structure is novel and unique, and the like. Most importantly, the elastic device is not directly contacted with foot, the jump capability is greatly increased under the premise of not influencing the advantages of the comfort of shoes and the like, and one elastic device can be used by more than one person, so that the application range of the elastic device is greatly expanded. In addition, the device can be simply used as a roller-skating shoe only by slight modification.

The invention relates to an energy-saving environment-friendly barbecue oven which comprises an oven body. A combustion furnace is arranged in the oven body, a feeding hopper is arranged on one side of the oven body and is connected with the combustion furnace through a fuel feeding mechanism and an ignition combustion mechanism, the oven body is composed of an upper cover and a base, a barbecue cavity is formed between the upper cover and the base, a grill is arranged in the barbecue cavity, and an oblique oil collecting plate is arranged under the grill. The oil collecting plate comprises an upper end and a lower end. An oil outlet nozzle is arranged on the side, at the lower end of the oil collecting plate, of the oven body of the barbecue oven. A basket is hung on the oil outlet nozzle. The oven body is provided with a feeding opening, a cover plate movably connected with the upper cover is arranged on the feeding opening, and a handle is arranged on the cover plate. A chimney communicated with an inner cavity of the oven body is arranged on one side of the oven body, a smoke exhaust fan is arranged at the end of the chimney, and a plurality of dust collecting plates are disposed on the pipe wall of the chimney. Automatic fuel supply, oxygen supplement and purification of combustion smoke and dust are achieved, and energy conservation and environmental protection are achieved.

The invention discloses a metal hydride hydrogen storage device. A barrel-shaped body with a downward opening is formed by sleeving a small-diameter part, a medium-diameter part and a large-diameter part in the mode that a gap is formed between every two of the parts, wherein a cavity formed by the small-diameter part is used as a hydrogen storage barrel, a sealed annular cavity which is composed by the first gap formed between the small-diameter part and the medium-diameter part is used as a heat exchange layer, and a sealed annular cavity which is composed by the second gap formed between the medium-diameter part and the large-diameter part is used as a heat insulating layer; a water inlet communicating with the heat exchange layer is formed in the upper end of the barrel wall of the barrel-shaped body through a pipeline, and a water outlet communicating with the heat exchanger layer is formed in the lower end of the barrel wall of the barrel-shaped body through a pipeline; an air inlet hole and an air outlet hole are symmetrically formed in the position, tightly attached to the inner wall of the hydrogen storage barrel, of the top of the barrel-shaped body, porous steel pipes penetrating through the hydrogen storage barrel are arranged in the air inlet hole and the air outlet hole correspondingly, and the walls of the porous steel pipes are coated with breathable films; a barrel cover is connected to the lower end of the barrel-shaped body; and a plurality of hydrogen storage unit layers are arranged in the hydrogen storage barrel through metal partition plates. The metal hydride hydrogen storage device is simple in structure, capable of controlling hydrogen absorption and release easily, high in hydrogen storage density, low in hydrogen storage pressure, safe, reliable and convenient to disassemble, assemble and maintain.

A circuit board is disclosed and includes a circuit board body, A first cushion block and a mounting hole, A top frame is horizontally connected to the top of the circuit board body, and the bottom ofthe circuit board body is horizontally connected with a bottom plate, A longitudinally arrange first cushion block is connected with that top four corner of the circuit board body, the top frame andthe bottom plate, a second cushion block is connected with the bottom of the first cushion block, two sides of the bottom plate are clam with sliding rails along the length direction, and the bottom plate is fixedly connected with the sliding block through four groups of positioning holes and bolts. A limit position plate is horizontally connected between that two second pad blocks at the two endsof the top of the circuit board body and between the two second pads at the two side of the top, and a pressing plate connected with the horizontal arrangement is connected at the bottom of the limiting plate. The position of the circuit board body inside the electrical equipment is easy to adjust and change, and the circuit board body installation is more convenient and quick, and can meet different installation needs. When the whole circuit board needs to be disassembled, replaced or repaired, it can be disassembled freely.

The invention discloses a split screen mobile phone assembly and a method for split screen display. The split screen mobile phone assembly comprises the same type of mobile phone bodies, and the four corners of the back of each mobile phone body are respectively and fixedly provided with a strong magnet, and first connecting parts are detachably arranged in the middles of the backs of the two mobile phone bodies. The side faces, not on the same side, of the two mobile phone bodies are respectively provided with two strong magnets. Second connecting parts are detachably arranged in the middles of the side faces. A mobile phone is used independently or used in a double-screen mode through the first connecting parts and the second connecting parts. The functions of free detachment and switching using are achieved.

The invention provides an explosion-proof valve type oil port of a front telescopic sleeve hydraulic oil cylinder of a dumper. A valve element is arranged in the oil port. A connecting shaft is arranged in the center of the valve element. One end of the connecting shaft stretches out of the valve element and is provided with an adjustment nut. The middle of the connecting shaft is located in the valve element and sleeved with a spring. A cover plate is arranged between the spring and the other end of the connecting shaft. The cover plate forms a telescopic movable component on the connecting shaft through the spring. Four to eight through oil ducts are formed in the valve element. Openings of the oil ducts are located in the coverage area of the plane of the cover plate. According to the explosion-proof valve type oil port of the front telescopic sleeve hydraulic oil cylinder of the dumper, the explosion-proof valve type oil port is formed through the combined action of the oil ducts, the connecting shaft, the spring and the cover plate in the valve element, in this way, even if an accident happens, the oil cylinder can be prevented from falling back or can fall back slowly, and safety accidents are avoided. A big box containing goods is prevented from falling on a crossbeam of the dumper rapidly, and thus safety accidents are avoided. By the adoption of the novel structure, potential safety hazards are reduced, and the safety coefficient of a hydraulic system is increased.

The invention discloses a large-scale MTS cyclic loading single multi-specimen test device and a discreteness identification method of the large-scale MTS cyclic loading single multi-specimen test device, and belongs to the field of experimental equipment. The large-scale MTS cyclic loading single multi-specimen test device comprises a base fixedly mounted in the position having a certain distance away from the lower part of an MTS loading head, a bearingplatform arranged above the base through telescopic supporting rods and comprising a lower panel, an upper panel and web plates, multiple specimen fixing devices annularly fixed at the center of the upper surface of the upper panel in uniformly distributed manners, and comprising sleeves and deformation layers, a load distribution device located between the MTS loading head and the specimen fixing devices and comprising a lower load plate and an upper load plate and a data acquisition system comprising axial force meters, collecting boxes and conducting wires. The large-scale MTS cyclic loading single multi-specimen test device can cyclically load multiple specimens simultaneously to save time, only when data collected by the corresponding collection boxes are consistent, the batch of the specimens can be considered to be tested under same conditions, and therefore, the discreteness of the test can be effectively lowered. Furthermore, the device has the characteristics of free disassembly and assembly and flexible operation.

The invention provides a device for breeding bees, which is composed of a bee movement area and an essential oil placing area, wherein the bee movement area and the essential oil placing area are separated through a mesh. The mesh is fixed at the bottom of the bee movement area, a centrifugal tube with a cover is installed at the top of the bee movement area and used for accommodating feeding food, the bottom of the centrifugal tube is provided with an opening, and the diameter of the opening is 2-3mm. The top of the bee movement area is provided with an air vent sealed with a net, filter paper is horizontally paved at the bottom of the essential oil placing area and used for loading rosewood heart wood essential oil. The device enables the bees to freely feed, enables feeding to be convenient, bee mites can freely parasitize the bee bodies, the device is divided into an upper layer and a lower layer, the plant essential oil is separated from the bees and can act on the bees and the bee mites in a fuming mode, the mite killing effect is good, the bees are not hurt, toxicity to the bees is small, and toxicity of the plant essential oil on the bees and the bee mites can be measured simultaneously. The device for breeding the bees can be applied to experiments for screening anti-mite essential oil.

The invention discloses a polishing and dust removing device for an ornament. The polishing and dust removing device comprises a rack and a work cover cabinet. An air outlet is formed in one side of the work cover cabinet. A glass window is arranged at the lower portion of the work cover cabinet. Hand holes are formed in the two sides of the glass window. A work panel is arranged in the work cover cabinet. The other side of the work cover cabinet is provided with a through groove and a fan. The fan is installed in the work cover cabinet and is located above the through groove. A transversely-through lever is hinged to the through groove. The end, located inside the work cover cabinet, of the lever is arranged above the work panel. A first spring is arranged between the end, located outside the work cover cabinet, of the lever and the rack. A cam abutting against the lever is installed on the rack. A switch controlling motion of the fan is arranged at the bottom of the work cover cabinet. The switch abuts against the bottom face of the work panel. A second spring is arranged between the work panel and the bottom face of the work cover cabinet. Compared with the prior art, according to the polishing and dust removing device for the ornament, acting force can be applied to the work panel through the lever, and therefore the work time of the fan is controlled, the work time of dust removing can be effectively controlled, and controllability is enhanced.

A multi-functional support capable of transferring a horizontal and multi-point local vertical load is provided. The multi-functional support is mainly formed by detachably assembling a distribution beam capable of transferring a vertical load locally and independently at multiple points, detachable upright columns, a template beam and a support base. The distribution beam capable of transferring a vertical load locally and independently at multiple points is located between tops of the two upright columns. The two upright columns are mounted on the support base. The template beam is located between the two upright columns, arranged on the support base and connected to the support base. The support base is fixed on a ground. The distribution beam capable of transferring a vertical load locally and independently at multiple points, the detachable upright columns, the support base and the template beam are located in the same plane. The multi-functional support can perform various experiments such as vertical loading, horizontal reciprocating loading and multi-point local independent vertical loading. By means of the detachable upright columns, loading and constraint fixing of an experimental wall can be realized step by step, thus reducing damage to a specimen by a moving specimen. The damage form of the loaded specimen can be kept effectively.

The invention discloses a barbecue microwave oven with a rotary grill. The barbecue microwave oven comprises an oven cavity, chain wheels, chains, fixing brackets, protective boxes, motors and two springs, wherein the oven cavity consists of a shell and an oven body; the rotary grill for accommodating foods is arranged in the oven cavity and consists of multiple horizontally-arranged rollers; each chain wheel is arranged at one end of each roller; each chain is meshed with each chain wheel and is enclosed; the fixing brackets are arranged at the two ends of each roller and are used for fixing each roller; the protective boxes are arranged at the two ends of each roller; each motor is arranged at one end of each chain; the two springs arranged on spring positioning posts are arranged on the fixing bracket on one side of each motor; and a motor shaft is arranged in a roller installation hole at one end of each chain. The barbecue microwave oven is provided with the special rotary grill, and the grill can be used for automatically overturning and barbecuing cylindrical foods (such as sausages, sweet potatoes and the like), so that food barbecuing uniformity is greatly enhanced. Moreover, the rotary grill can be freely detached and dose not influence other barbecuing modes.

The invention provides a portable computer external heat radiation apparatus, which comprises a pedestal, an antiskid foot pad, a heat sink, a fixed block, a bracing frame, an angle adjustment tank, a fixed channel section, a rotating shaft, a lower fixing block, a side edge block and a USB interface; the pedestal is arranged on the upper portion of the antiskid foot pad; the heat sink is connected to the pedestal through a rotating shaft and is arranged on the upper portion of the fixed block; the bracing frame is arranged at the upper portion of the angle adjustment tank; the fixed channel section is arranged at the left end of the upper portion of the pedestal; the lower fixing block is arranged a the lower portion of the heat sink; the side edge block is arranged at the two sides of the heat sink; and the USB interface is arranged at the side edge of the upper portion of the heat sink. Through the setting of the invention, different positions of the notebook bottom can be radiated separately; at the same time, the usage angle of the notebook can be adjusted, and unnecessary damage the body because of long-term usage can be effectively avoided; furthermore, the heat radiation of the notebook can be improved and the service life of the notebook can be prolonged.

The invention discloses a memory alloy ring sealing device which mainly comprises an outer cylinder, a memory alloy ring and an end cover, wherein the memory alloy ring is divided into an outer memory alloy ring and an inner memory alloy ring. During temperature raising phase change, the memory alloy ring turns into the shape of the high temperature phase, the shape of the outer memory alloy ring is shrunk on the whole, and the shape of the inner memory alloy ring is swelled on the whole, so that a sealing role can be played for a liquid or gas medium in the thin-wall outer cylinder device. During temperature reducing phase change, the memory alloy ring turns into the shape of the low temperature phase, the shape of the outer memory alloy ring is swelled on the whole, and the shape of the inner memory alloy ring is shrunk on the whole, so that the sealing device can be freely disassembled. In the sealing state, the theoretical resultant force value generated on the inner surface and the outer surface of the thin-wall outer cylinder by the outer memory alloy ring and the inner memory alloy ring is zero, so that leakage risk caused by single side load deformation of the thin-wall outer cylinder can be avoided. The memory alloy ring sealing device is long in sealing life, and the sealing effect on the medium in the thin-wall outer cylinder device cannot be reduced.

The invention discloses a coal mine tunnel surrounding rock deformation monitoring device. The device comprises a rail arranged along a tunnel, a monitoring platform, a first driving device, a laser radar, a controller, a wireless communication module, a communication module group and a cell module group, wherein the monitoring platform is provided with a roller and is connected to the rail; the first driving device is connected into the monitoring platform and is connected to the roller, and is used for driving the monitoring platform to move along the rail; the laser radar is arranged on thefront end of the monitoring platform and is used for collecting deformation information in a tunnel; the controller is electrically connected to the laser radar and is used for receiving the deformation information; the wireless communication module is electrically connected to the controller and is used for receiving the deformation information passing through the controller; the communication module group is arranged in the tunnel, is electrically connected to the wireless communication module and is used for receiving the deformation information passing through the wireless communication module and transmitting the deformation information to a ground data center; and the cell module group is electrically connected to the first driving device and the controller. The monitoring device can obtain a surrounding rock deformation condition under mine in real time, measurement is accurate, precision is high, and manpower is saved.

The invention discloses a supporting device for a numerical control punch worktable. The supporting device for the numerical control punch worktable comprises a pad-placing bottom plate and a supporting base. Supporting rods are symmetrically fixed to the two sides of the top of the supporting base. Limiting blocks are connected to the one side of fastening screws in a sleeveing mode and located above sliding pad plates. According to the supporting device for the numerical control punch worktable, the two sliding pad plates are slidably arranged at the top of the pad-placing bottom plate, thefastening screws penetrate through supporting plates which are fixed on the one sides of the top portions of the sliding pad plates in a sleeving mode, so that the width of the bottom plate of a numerical control lathe to be adjusted for the numerical control lathes with more sizes, and the position of the numerical control lathe can be fixed by fastening screws; and then due to arrangement of a telescopic rod, a supporting column and a supporting rod, the height of the pad-placing bottom plate can be adjusted by the telescopic action of the telescopic rod, the numerical control lathe is moreconvenient in actual work.

The invention provides a squirrel-cage type self-rinsing micro-bubble generator applied to air floatation treatment of oily sewage and industrial wastewater. A stock solution forms rotating flow on a rotating blade, and then enters a micro-porous membrane pipe to improve the utilization rate of gas; a ceramic-membrane membrane pipe ensures that generated micro-bubbles are fine and uniform in granularity and large in amount by adopting a squirrel-cage type arrangement and a honeycomb micro-fine pore structure and matching with an air inlet manifold; a control valve, a pressure safety valve and a differential pressure transmitter are arranged on the squirrel-cage type self-rinsing micro-bubble generator to ensure that the device is high in degree of automation; a motor drives a rinsing jacket and a rinsing pipe to continuously rotate to sequentially rinse the micro-porous membrane pipe until regeneration so as to finish the self-rinsing operation; the dirt of the micro-porous membrane pipe can be thoroughly cleaned by using the dual-cleaning of the combination of cleaning liquid rinsing operation and gas purging operation; a micro-bubble tank is designed with three closed chambers, namely a rectification chamber, a gas chamber and a steady-flow chamber; moreover, upper and lower division plates are connected with an annular plate by adopting screws, so that the micro-porous membrane pipe can be disassembled and replaced. The whole set of the device is compact in structure, easy in arrangement, operation and maintenance, and low in running cost.