1155results about How to "Achieving tightness" patented technology

The invention relates to a high-voltage cable accessory and cable corrugated aluminum sheath automatic lead coating machine, which comprises a fixing unit, a rotary positioning unit, an operation system and a control module, and is characterized in that the operation system is mounted on the rotary positioning unit, the rotary positioning unit is mounted on the fixing unit, and the fixing unit fixes and clamps a cable; the control module controls the fixing unit, the rotary positioning unit and the operation system to conduct lead coating on the high-voltage cable accessory and the cable corrugated aluminum sheath, the lead coating quality and efficiency can be improved, and automatic operation of the lead coating process is achieved. The invention further provides a lead enameling process using the automatic lead enameling machine for the high-voltage cable accessory and the cable corrugated aluminum sheath, the operation is simple and convenient, and the defect that the manual lead enameling efficiency of the high-voltage cable accessory and the cable corrugated aluminum sheath is low is overcome; and the defects of poor lead coating and safety accidents caused by uneven levels of cable accessory installation personnel and the influence of the field operation environment on the technology are overcome.

According to the drilling integrated packing system and method with the dynamic sealing and flexible spraying functions, firstly, two blocking bags are subjected to grouting expansion through a grouting device, a sealed space is formed between the two blocking bags, and flexible hole sealing grout is injected into the sealed space to enable the flexible hole sealing grout to enter drilling cracks; a spraying device is used for spraying a flexible spraying material on the roadway surface outside the drilled hole, and primary sealing and spraying work is achieved; after completion, gas extraction is carried out on the drill hole, in the gas extraction process, the gas extraction drill hole sealing quality detection device collects gas in the drill hole in real time for data detection, analysis and processing are carried out in combination with a set threshold value, and therefore the drill hole sealing quality is judged, and if the hole sealing quality is reduced, the grouting device and the spraying device work, and the grouting device and the spraying device work. Re-sealing and spraying of the drilled hole are achieved; and in the subsequent gas extraction process, according to the drilling quality judged in real time, the dynamic hole sealing process of first sealing and then spraying can be continuously conducted, and therefore the gas extraction efficiency is guaranteed.

The invention relates to the technical field of curtain wall detection, in particular to a curtain wall comprehensive physical detection device which comprises a supporting frame, an item changing motor is fixedly connected to the upper end of the supporting frame, an item changing shaft is fixedly connected to the output end of the item changing motor, a testing shell is fixedly connected to the inner side of the lower end of the supporting frame, and a containing shell is fixedly connected to and penetrates through the upper end of the testing shell. A detection bin is slidably connected to the inner side of the containing shell and engaged with the item changing shaft, and an adjusting frame is arranged on the inner side of the detection bin. The curtain wall can be fixedly installed on the inner side of the detection bin, and the item changing shaft rotates to push the detection bin to rotate on the inner side of the containing shell, so that the curtain wall can be adjusted from the installation and placement angle to the angle needing to be tested, the curtain wall can vertically simulate the installation environment, and the curtain wall detection result is closer to the real situation; the effect of adjusting the installation angle during curtain wall detection so as to be closer to real installation is achieved, and the problem that the difference between horizontal placement detection and real installation effect detection results is large during curtain wall detection is solved.

The invention discloses a wind turbine blade material degradation and recycling device in the technical field of wind turbine blade recycling, comprising a preheating tank and a Stirling engine, wherein the inner wall of the preheating tank is provided with a preheating chamber; the input end of the Stirling engine is connected with the preheating chamber, and the output end of the Stirling engine is provided with a crushing mechanism for crushing the wind turbine blades; a wind selection mechanism for screening wind turbine blade fragments is provided below the preheating tank, the wind selection mechanism comprises a base, a wind selection channel and a wind selection chamber are provided in the base, a recovery plate is provided in the wind selection chamber, a plurality of screening holes are provided on the recovery plate, and the screening holes are successively reduced in order from top to bottom; a fan is provided on the side of the recovery plate away from the wind selection channel, a heating chamber is further provided below the recovery plate, and an insulating mechanism for sealing the heating chamber is provided between the heating chamber and the recovery plate; the reuse rate of heat energy is improved by the Stirling engine and the wind selection mechanism, the wind turbine blades are preheated, and the processing efficiency of the blades is improved.

The invention provides an electrostatic chuck and a manufacturing method thereof, and the electrostatic chuck comprises a metal base which is internally provided with a plurality of gas channels and lifting channels; the ceramic cover is arranged on the metal base in a covering manner; the bonding layer is arranged between the metal base and the ceramic cover and is used for connecting the ceramic cover and the metal base; the ceramic cover comprises a ceramic plate which is located above the metal base, and a gas sleeve and a lifting sleeve which penetrate through the upper surface and the lower surface of the ceramic plate are arranged on the ceramic plate. The gas sleeve penetrates through the joint layer and is communicated with the gas channel; the lifting sleeve penetrates through the joint layer and is communicated with the lifting channel; and the upper part of the ceramic ring is connected with the circumferential edge of the ceramic disc, and the lower part of the ceramic ring is arranged in the circumferential directions of the joint layer and the metal base in a surrounding and sleeving manner and covers the side walls of the joint layer and the metal base, so that plasma is effectively prevented from corroding the joint layer and the metal base from the side surface, and the service life of the electrostatic chuck is prolonged.

The utility model provides a PCR (Polymerase Chain Reaction) sealed detection box which comprises a PCR micro-fluidic chip main body and a chip supporting plate, the PCR micro-fluidic chip main body comprises a substrate and a cover plate which are attached to each other, at least one reaction chamber is formed on the substrate, and sample injection holes are respectively formed on the cover plate corresponding to the end parts of the reaction chambers; a plurality of chip bulges and an elastic limiting card are arranged on the second surface of the chip supporting plate, the chip bulges are used for limiting and fixing the PCR micro-fluidic chip main body, and the elastic limiting card is arranged on one side, different from the chip bulges, of the PCR micro-fluidic chip main body and is provided with an elastic structure in the horizontal or vertical direction; the fixing device is used for detachably loading, pressing and fixing a PCR micro-fluidic chip main body. According to the PCR sealed detection box provided by the utility model, sample adding and sealing of the PCR micro-fluidic chip are simplified and automatic, and the PCR sealed detection box is more suitable for being integrated into automatic PCR detection equipment.

The invention provides an adjustable water-saving valve for a multi-stage pipeline and a using method of the adjustable water-saving valve, and belongs to the technical field of valves.The adjustable water-saving valve comprises a shell formed by buckling a front cover and a rear cover front and back, the shell comprises a flow channel penetrating front and back in the length direction, and the adjustable water-saving valve further comprises T-shaped limiting grooves formed in the upper side and the lower side of the flow channel in the shell; a valve element is arranged in the shell flow channel and is in an I shape. According to the scheme, the valve element, the limiting pipe, the first water outlet pipe, the sleeve and the second water outlet pipe are arranged, the opening degree of the valve element and the rotating angle of the first water outlet pipe are in positive correlation, and in the small-flow state, water outlet is achieved only through the second water outlet pipe; the water flow generated under the dispersion action of the filter screen has a good washing effect, and a good cleaning effect can be achieved in actual use, so that the water consumption for washing is saved, and the water-saving effect is achieved.

The invention provides wheat seed low-temperature rapid partial freezing storage equipment, and relates to wheat seeds, the wheat seed low-temperature rapid partial freezing storage equipment comprises a box body and a box cover hinged to the top of the box body, and the box body is internally provided with a low-temperature cavity for placing a storage box; an outer sealing air bag and an inner sealing air bag are arranged on the surface of the box cover, and an outer sealing groove is formed in the position, corresponding to the outer sealing air bag, of the box body. Through cooperation of the outer sealing air bag and the inner sealing air bag, when the box cover is buckled on the box body to conduct partial freezing storage on wheat in the low-temperature cavity, the outer sealing air bag and the inner sealing air bag are in a sub-full state so as to meet the requirement for embedded sealing of the outer sealing air bag and the inner sealing air bag and the corresponding outer sealing groove and inner sealing groove; the transmission plate can be pushed to enable the telescopic plate on the transmission plate to extend outwards, the pressurizing piston on the connecting plate can be driven to slide in the pressurizing cavity through the connecting part in the extending process, pressurizing of the inner sealing air bag and the outer sealing air bag is promoted, and the inner sealing air bag and the outer sealing air bag are in a full state.

The utility model discloses a multi-style water injection toy ball which comprises an adjusting rod and two half-shell rubber bodies, one end of the adjusting rod is connected to the inner wall of one half-shell rubber body, and the other end of the adjusting rod is screwed into a screw hole of the other half-shell rubber body through a thread part, so that the two half-shell rubber bodies are combined in a covering mode to form a hollow whole shell. After the water is filled and the ball is thrown, the water releasing effect is good, and the entertainment effect is better; the half-shell rubber bodies can be screwed, and the closing force of the two half-shell rubber bodies can be adjusted by adjusting the depth of the threaded part of the adjusting rod screwed into the screw hole, so that the required sealing effect is achieved, the corresponding explosion water release effect is obtained, and the flexibility is high; during water injection, the half-shell rubber body on one side or the two sides can be pressed at the same time or the half-shell rubber bodies on the two sides are pulled open or pulled open for water injection, the water injection modes are multiple, and diversified playing requirements are met; and in addition, the colors and the shapes of the two half-shell rubber bodies can be the same or different, so that more interestingness is achieved, and individual requirements are met.

The invention relates to the technical field of pharmaceutical transportation, in particular to a transportation device for pharmaceutical production. The conveying device for pharmaceutical production comprises a conveying belt conveying assembly, a lifting assembly, a stacking assembly, a clamping and fixing assembly, a limiting assembly, a transferring assembly and a warehouse-out assembly. The device can automatically and quickly collect, transport, place, store and stack traditional Chinese medicines, especially pills, in a production site, realizes stable fixation and smooth transportation of the medicine transport plate, performs automatic transportation and transfer, improves the transport efficiency and accuracy, reduces manual operation and errors, and meanwhile, reduces the labor intensity of workers. By means of stacking and clamping, sealed storage and good supporting of medicine in the medicine grooves are guaranteed, the medicine is prevented from being squeezed and affected with damp during transportation, space is saved, the transportation efficiency is improved, automation and high efficiency of pharmaceutical production and transportation are achieved, and the efficiency and accuracy of medicine transportation are improved.

The invention discloses a marine ranch internal wave frequency receiver with a waterproof structure, and belongs to the technical field of marine internal wave monitoring, the marine ranch internal wave frequency receiver comprises an inner shell used for mounting a frequency receiving module and a power supply, an outer shell is fixedly mounted on the outer side of the inner shell, and the upper end of the inner shell penetrates through the top of the outer shell; the top opening of the inner shell is fixedly connected with a sealing cover; the floating and sinking adjusting assembly is mounted in a cavity between the inner shell and the outer shell; the floating adjusting piece is arranged on the outer side of the upper end of the inner shell in a sleeving mode, and the lower end of the floating adjusting piece is fixedly connected with a linkage connecting plate; and the air storage bag is embedded in the outer side of the upper part of the inner shell, and a sealing air bag is also embedded in the inner side of the inner shell. According to the marine ranch internal wave frequency receiver with the waterproof structure, secondary locking and sealing of the cover body can be realized by utilizing a seawater buoyancy effect, effective water prevention is realized, and attachments on the outer side of the shell can be automatically cleaned in a floating and sinking adjustment process.

The utility model provides an elastic safety sealing door, which belongs to the technical field of sealing doors and comprises an outer door frame. The protective glass is fixedly connected to the inner surface of the outer door frame, and the inner surface of the outer door frame is slidably connected with sealing glass; each elastic assembly comprises a sliding shell, the sliding shell is fixedly connected to the inner wall of one side of the outer door frame, the circumferential inner wall of the sliding shell is slidably connected with an extrusion rod, and one side end of the extrusion rod is fixedly connected with a connecting soft cushion; the second spring is fixedly connected to the inner surface of the sliding shell, the circumferential inner wall of the sliding shell is slidably connected with a sliding plate, and the internal structure of the sealing door is changed into an elastic structure, so that the sealing door and the sealing strip are completely parallel in the machining and assembling process, and the pressure in the sealing door is conveniently and uniformly adjusted; and the safety and the sealing performance of the sealing door are improved.

The utility model relates to the technical field of power distribution cabinets, and discloses a low-voltage power distribution cabinet with an adjustable heat dissipation hole area, comprising a power distribution cabinet assembly, the power distribution cabinet assembly comprises a power distribution cabinet main body, the power distribution cabinet main body is fixedly connected with a canopy, the power distribution cabinet main body is internally provided with a groove, the power distribution cabinet assembly is internally provided with an adjusting assembly, and the adjusting assembly is fixedly connected with the canopy. The adjusting assembly comprises a first heat dissipation plate, one side of the first heat dissipation plate is in lap joint with a second heat dissipation plate, and a baffle is fixedly connected to the first heat dissipation plate. According to the low-voltage power distribution cabinet with the adjustable heat dissipation hole area, a connecting plate and a sliding block are driven to move along a sliding rail, so that a first heat dissipation plate and a second heat dissipation plate move oppositely, the first heat dissipation plate and the second heat dissipation plate are staggered, heat dissipation holes are shielded, meanwhile, a baffle is driven to stretch out of a storage groove, the baffle shields the second heat dissipation plate, and the heat dissipation hole area is adjusted. Therefore, the area of the heat dissipation holes can be adjusted, and the area of the heat dissipation holes can be conveniently adjusted according to seasons.

The utility model discloses a hydrogen filling connecting device, and belongs to the technical field of connecting structures. A hydrogen filling connecting device comprises an output connector rotationally connected with a hydrogen output pipe and an input connector fixedly connected with a hydrogen input pipe, the hydrogen output pipe is rotationally arranged in the output connector, and a screw joint clamping block is arranged on the inner wall of the output connector. A sealing gasket is arranged at the end, close to the hydrogen output pipe, of the input connector, threaded teeth are arranged on the outer wall of the input connector, the central angle corresponding to the threaded teeth ranges from 60 degrees to 180 degrees, the number of the threaded teeth is at least two, and the threaded teeth are evenly distributed on the outer wall of the input connector in the circumferential direction. The output connector is provided with a locking mechanism connected with the input connector in an inserted mode. The sealing device has the advantages of being convenient to operate manually and good in sealing effect.

The utility model relates to the technical field of direct drinking water deep purification, and discloses a direct drinking water deep purification circulating conveying device which comprises a shell, a faucet is fixedly connected to the interior of the shell, a second filter plate is fixedly connected to the interior of the shell, a fixing rod is fixedly connected to the interior of the second filter plate, and the fixing rod is fixedly connected to the interior of the shell. A third filter element is slidably connected to the interior of the second filter plate, a first filter plate is slidably connected to one end of the third filter element, and a nut is rotatably connected to one end of the fixing rod. According to the water purifier, the third filter element can be fixed by rotating the nut, the cover plate can be opened by pressing the button, the design facilitates maintenance and replacement of the third filter element, and unconsumed water can be circulated back to a system through the circulating pipeline, so that the effects of replacing the filter element and sealing the shell are achieved; the problems of water leakage prevention and filter element replacement are solved.

The intelligent double-gate-plate gate valve comprises a valve body and a valve rod located in the valve body, a driving piece for driving the valve rod to move up and down is arranged above the valve body, the driving piece comprises a main air cylinder, an auxiliary air cylinder is installed in the main air cylinder, and the main air cylinder and the auxiliary air cylinder are connected with the same piston rod. The piston rod is connected with a valve rod, the valve rod is connected with a sliding block, dovetail blocks are integrally connected to the two sides of the sliding block, a left gate plate and a right gate plate are arranged on the two sides of the sliding block respectively, and first dovetail grooves connected with the dovetail blocks in a clamped mode are formed in the side, facing the sliding block, of the left gate plate. A second dovetail groove connected with the other dovetail block in a clamped mode is formed in the side, facing the sliding block, of the right gate plate, and a supporting plate is fixedly connected to the bottom of the sliding block. The pressure relief valve has the advantage that when the pressure of the middle cavity of the valve body is too high, the inlet valve seat achieves the automatic pressure relief function.

A generator rear end cover detection tool disclosed by the present invention comprises a workbench, a fixed rod and a top plate, one end of the fixed rod is vertically fixed on the workbench, the other end of the fixed rod is fixed on the top plate parallel to the workbench, and a rotary positioning mechanism is fixed on the upper end surface of the workbench. And a rear cover body is placed on the rotary positioning mechanism. According to the detection tool for the rear end cover of the generator, a linked air tightness detection structure is adopted, the detection effect can be achieved through gas pressurization after the rear cover is sealed, whether small cracks exist in the rear cover or not can be determined through air tightness detection of the rear cover, and compared with traditional manual detection, the detection efficiency can be greatly improved; the appearance of the rear cover can be comprehensively detected in cooperation with the rotary appearance detection mechanism, the production quality of the rear cover is ensured, the device is compact in structure, multiple kinds of detection can be synchronously conducted on the rear cover, and therefore the detection procedures are reduced, and the detection efficiency is improved.

The utility model provides an air volume regulating valve with good sealing performance, which belongs to the technical field of air volume regulating valves and comprises a valve body, an air duct is arranged in the valve body, two ends of the air duct are connecting flanges, two ends of a linkage shaft of a blade are rotatably connected with the inside of the air duct through couplings, and the linkage shaft is connected with the valve body. A linkage shaft is fixedly connected to the top end of the valve body, a valve handle is fixedly connected to the top end of the linkage shaft, a locking mechanism is arranged between the valve handle and the valve body, blade baffles are fixedly connected to the inner walls of the two sides of the air duct, baffle grooves matched with the blade baffles are formed in the two ends of each blade, and first sealing layers are arranged at the outer ends of the baffle grooves. The blade and the valve handle are parallel to each other on the same vertical shaft, and the blade is fixedly connected with the valve handle through the linkage shaft; the utility model can solve the problem of untight closing caused by poor sealing effect of the valve port.

The utility model relates to a fly-cutter shaft sealing device and a coulter type mixing machine, the fly-cutter shaft sealing device comprises a mounting seat, a rotating shaft, a sealing static ring and a gas blocking ring, and a shaft hole is formed in the mounting seat in a penetrating manner; the first end of the rotating shaft is rotationally arranged in the shaft hole through a bearing, and the second end of the rotating shaft is connected with a fly-cutter set. The sealing static ring is connected with the mounting base, the sealing static ring is arranged on the outer side of the rotating shaft in a sleeving mode and located between the bearing and the fly-cutter set, an air inlet hole is formed in the sealing static ring, and the rotating shaft communicates with the outside through the air inlet hole; the gas blocking ring is arranged between the rotating shaft and the sealing static ring and connected with the sealing static ring, and a spiral structure is formed at the position, opposite to the gas blocking ring, of the peripheral side of the rotating shaft. The problems that a contact type seal is abraded in the using process, the seal loses efficacy when the contact type seal is abraded to a certain amount, materials leak, and the materials enter a bearing in a sealing device, so that the bearing is stuck are solved.

The utility model discloses a device for assisting an injection molding machine in demoulding injection products, which comprises a base, two fixing plates are symmetrically and fixedly mounted on the top surface of the base, an upper mould is fixedly mounted on the side surface of one fixing plate through a hydraulic oil cylinder, and a lower mould is fixedly mounted on the side surface of the other fixing plate through an assembly box. The two side faces of the lower mold are fixedly provided with gas collecting pipes, each gas collecting pipe is internally provided with a negative pressure mechanism, and the negative pressure mechanisms are connected with the upper mold. When the mold is used, the operation is simple, the sealing and automatic demolding effects of the lower mold can be further achieved through the approach and separation of the upper mold and the lower mold, and the mold is convenient to use. And the manufacturing cost of the automatic demolding device is reduced, and the automatic demolding device is friendly to small workshops or enterprises.

The utility model relates to an air tightness detection sealing tool and a detection system, the air tightness detection sealing tool comprises a driving module and a plugging module, the driving module comprises a position adjusting assembly and a connecting assembly which are connected, and the position adjusting assembly drives the connecting assembly to move; the plugging module comprises a plugging assembly, the plugging assembly is provided with a connecting part matched with the connecting assembly, and the connecting assembly is detachably connected with the connecting part. The airtightness detection sealing tool is suitable for sealing of a device shell, and especially when the inner side of a detected workpiece needs to be sealed, due to the fact that the driving module and the plugging module are detachably connected, the plugging module and the driving module can be arranged on the inner side and the outer side of the detected workpiece respectively; and the connection between the plugging module and the driving module is realized through the connecting assembly and the connecting part, so that the driving module can conveniently drive the plugging assembly to abut against the inner side surface of the tested workpiece, the inner side of the tested workpiece is sealed, and the sealing state is consistent with the actual assembly state.

The utility model belongs to the technical field of heating boiler pipeline installation, and particularly relates to a pipeline butt joint device for heating boiler installation, which comprises a first pipeline and a second pipeline, a butt joint assembly is arranged between the first pipeline and the second pipeline, and first conical sealing connecting blocks communicated with the first pipeline and the second pipeline are arranged on the sides, close to each other, of the first pipeline and the second pipeline. The butt joint assembly comprises a hollow pipe, the two sides of the hollow pipe are each provided with a shell allowing the first pipeline and the second pipeline to enter, conical cavities are formed in the shells, the inner walls of the conical cavities are matched with the first conical sealing connecting blocks, elastic rubber sealing rings are arranged at inlets of the shells, and the first pipeline and the second pipeline are connected with the shells through fixing assemblies. The device not only can simplify the mounting steps and improve the subsequent mounting and dismounting, but also can adapt to the butt joint of pipelines with different sizes and improve the use effect.

The invention belongs to the field of check valves, particularly relates to a swash plate type butterfly check valve, and aims to solve the problems that an existing check valve only depends on gravity to assist in completing sealing operation, the sealing effect is poor, and impact force needed for opening a device cannot be adjusted according to different fluids. A water inlet and a water outlet are formed in the two ends of the valve body correspondingly, a mounting plate is arranged at the top of the valve body, and a cover plate is arranged at the top of the mounting plate. Water flow impacts a first circular plate to further drive a limiting plate to move transversely, a sliding block moves transversely under the elastic force action of a second spring, the braking state of a valve clack is gradually relieved, and therefore the valve clack can be braked. And when the first circular plate moves, the two circular rods are driven to move transversely, the pushing block pushes the clamping rod to move transversely and helps the clamping rod to move out, and when the impact force needed for opening the adjusting device is needed, the circular disc can be pulled firstly and then rotated, so that the torsion of the device is adjusted.

The invention discloses an ultralow-temperature liquid intrusive pressure sensor calibration system and method and a sensor. The system comprises a vacuum heat insulation cavity, a temperature control cavity assembly, a pressure control cavity assembly, a pressure control gas assembly, a standard differential pressure gauge and a test cavity assembly. Wherein the temperature control cavity assembly comprises a temperature control cavity; the pressure control cavity assembly comprises a pressure control cavity, a pressure control cavity liquid inlet pipeline and a pressure control cavity exhaust pipeline; the pressure control cavity comprises an upper cavity body, a long neck tube and a lower cavity body; two ends of the long-neck tube are respectively communicated with the upper cavity and the lower cavity; the temperature control cavity and the pressure control cavity are located in the vacuum heat insulation cavity, the temperature control cavity wraps the lower cavity, and the test cavity assembly is connected with the lower cavity; a pressure control cavity liquid inlet pipeline, a pressure control cavity exhaust pipeline and a pressure control gas assembly penetrate through the vacuum heat insulation cavity and then are communicated with the upper cavity; the standard differential pressure gauge is connected with the upper cavity, a pressure control cavity pressure sensor is arranged on the pressure control cavity liquid inlet pipeline, the gas pressure intensity and the liquid pressure intensity of the gas space in the upper cavity are respectively tested according to the standard differential pressure gauge and the pressure control cavity pressure sensor, and the sum of the gas pressure intensity and the liquid pressure intensity serves as calibration comparison pressure; according to the invention, the influence of gas-liquid mixing relative output pressure can be avoided, and different pressure calibration tests of fixed-point temperature maintenance can be realized so as to meet the research and calibration requirements of the ultralow-temperature liquid intrusive pressure sensor.

The crystal blank storage device comprises a mounting base and a plurality of storage plates, the mounting base is arranged in an L shape, the storage plates are mounted on the front side of the upper end of the mounting base in an inserted mode, a through hole is formed in the upper side of the front end face of the mounting base, guide pipes are fixedly mounted on the front end face and the rear end face of each storage plate, and the guide pipes are inserted into the through holes. An annular positioning seat matched with the through hole is fixedly installed on the rear end face of the guide pipe, a positioning ring is fixedly installed on the rear end face of the through hole, a rotating ring matched with the positioning ring is rotatably installed on the rear end face of the annular positioning seat, and a first spring is fixedly installed between the annular positioning seat and the rotating ring. A plurality of positioning clamping blocks which are attached to one another are installed between the annular positioning seat and the rotating ring in a sliding mode, the positioning clamping blocks are attached to the periphery of the guide pipe, and the positioning clamping blocks and the front side and the rear side of the positioning ring are obliquely arranged in a matched mode.

The degradable meal box comprises a box body and a cover body, a circle of buckling plate protruding outwards is fixed to the edge of an opening in the top of the box body, a plurality of buckling holes longitudinally penetrating through the buckling plate are formed in the top of the buckling plate along the periphery of the box body, and a circle of inner sealing grooves are formed in the positions, on the inner sides of the buckling holes, of the top of the buckling plate; a circle of outer sealing groove is formed in the outer side of the cover body, and a buckling head matched with the buckling hole, an inner pressing plate matched with the inner sealing groove and an outer pressing plate matched with the outer sealing groove are fixed to the bottom of the cover body. According to the utility model, the box body is sealed by adopting a dual-sealing structure consisting of the inner sealing groove and the outer sealing groove, and a pressing force between the cover body and the box body is formed by utilizing a buckling structure consisting of the buckling hole and the buckling head, so that the pressing force is provided between the sealing groove and the pressing plate, and the sealing effect is achieved; according to the structure, the pressing force between the buckling hole and the buckling head can be relieved only by twisting off the buckling head during opening, and the cover body and the box body can be easily separated.

The invention relates to the technical field of storage tank safety devices, and discloses a storage tank breather valve which comprises a valve body, a pressure cavity is defined by the upper portion of an inner cavity of the valve body through a pressure end valve hole, a vacuum cavity is defined by the lower portion of the inner cavity of the valve body through a partition plate and a vacuum end valve hole, the lower end of the valve body is an air inlet, and a first sealing structure is arranged on the pressure end valve hole. A first sealing structure is arranged on the vacuum end valve hole, a second sealing structure is arranged on the vacuum end valve hole, each of the first sealing structure and the second sealing structure comprises a valve seat, a valve disc, a sealing membrane and a membrane fixing circular plate, more than two annular grooves are formed in the lower surface of the valve disc, and the sealing membrane is arranged on the lower surface of the valve disc and covers the annular grooves; the membrane fixing circular plate is arranged in the middle of the lower surface of the valve disc and used for pressing the membrane sealing piece, the valve seat is provided with more than two sealing pointed cones, and the sealing pointed cones and the annular grooves are arranged correspondingly. According to the storage tank breather valve, complete sealing can be achieved, and the zero-leakage sealing effect of the breather valve is achieved.

The utility model relates to the technical field of filtering centrifugal machines, and discloses a horizontal spiral filtering centrifugal machine which comprises a centrifugal mechanism, a transmission mechanism is connected outside the centrifugal mechanism, an anti-blocking assembly is arranged outside the transmission mechanism, a control assembly is connected outside the transmission mechanism, and the anti-blocking assembly comprises a conveying pipe. A fixing block is connected to one end of the conveying pipe in a clamped mode, a sealing plug is bonded to one side of the fixing block, a connecting rod is connected to the middle of the sealing plug in a sleeving mode, one end of the connecting rod is rotationally connected with the fixing block, and a scraping plate is fixedly connected to the outside of the connecting rod. According to the horizontal spiral filtering centrifugal machine, the scraping plate outside the connecting rod is driven to rotate at the same time, so that the scraping plate scrapes materials adhered to the inner wall of the conveying pipe, the scraping plate is a continuous arc-shaped plate, the materials are conveyed while the inner wall of the conveying pipe is scraped, the materials are prevented from being adhered to the interior of the conveying pipe, conveying of the materials is guaranteed, and the service life of the materials is prolonged. And meanwhile, the scraping plate is also convenient to disassemble and clean.

The invention discloses a long-strip-shaped liquid crystal display screen which comprises an upper frame and a display mechanism arranged in the upper frame, the upper frame is connected with a lower frame assembly through a connecting mechanism, and a sealing ring is arranged between the upper frame and the lower frame assembly. The lower frame assembly is pulled to move to be matched with the connecting mechanism to drive the moving lower frame assembly to be unfolded, so that the mounting area of the upper frame can be expanded, the display mechanism can be conveniently and directly placed in the space between the upper frame and the unfolded lower frame assembly, and the sealing ring arranged at the upper frame is expanded through the matching of the pulling assembly; the display mechanism can enter conveniently, after the display mechanism and the upper frame are installed, the installed display mechanism can be clamped by reversely moving the lower frame assembly, the pulling assembly can be triggered to reversely move through movement of the connecting mechanism, and a sealing ring is pushed to be attached to the display mechanism; therefore, the display mechanism can be installed and sealed at a time.

The invention provides a gemcitabine lipidosome preparation all-in-one machine and method, the gemcitabine lipidosome preparation all-in-one machine comprises an instrument shell, an operation panel, a microfluidic LNP preparation instrument, a test tube booster, a centrifugal machine and a PH detector, the operation panel is installed on the instrument shell, the microfluidic LNP preparation instrument, the test tube booster, the centrifugal machine and the PH detector are all installed in the instrument shell, and the operation panel is installed on the instrument shell. The micro-fluidic LNP preparation instrument is installed at the topmost part of the instrument shell, the right side of the micro-fluidic LNP preparation instrument is connected with the PH detector, the test tube booster is installed below the micro-fluidic LNP preparation instrument and the PH detector, the centrifugal machine is installed below the test tube booster, and integrated preparation of gemcitabine lipidosome is achieved through the structure.