60results about How to "No leaks" patented technology

This utility model relates to the field of material pressing equipment technology and discloses a user-friendly material pressing machine, including a frame, a material barrel fixed on one side of the frame, a pressure plate inside the material barrel, and several first and second sealing rings installed on the outer side of the pressure plate through grooves. The first and second sealing rings are used to seal the gap between the material barrel and the pressure plate. A connecting plate is fixed on the top of the material barrel, and two cover plates are hinged to the top of the connecting plate. A hydraulic cylinder is provided on the top of the cover plate. The push rod of the hydraulic cylinder moves downward, thereby driving the pressure plate to move downward inside the material barrel to apply uniform pressure to the material, so that the material is effectively squeezed. Several first and second sealing rings are installed on the outer side of the pressure plate through grooves. The multiple sealing rings form a reliable high-pressure sealing barrier to ensure that the medium does not leak under high pressure, ensuring the sealing safety of the equipment in high-pressure, high-viscosity, and high-frequency operation scenarios, and enabling the equipment to operate stably under various complex and harsh working conditions.

The utility model relates to the technical field of oil well liquid drainage, in particular to a negative pressure liquid drainage device. Comprising an upper connector, a sealing conical surface is formed in the upper connector, the lower end of the upper connector is fixedly and hermetically connected with an outer cylinder, the lower end of the outer cylinder is fixedly and hermetically connected with a lower connector, a piston blind plate is arranged in the lower connector, connected with the lower connector through a shear pin and in sealed contact with the upper connector, and a screen pipe is fixedly and hermetically connected in the lower end of the piston blind plate. The lower end of the screen pipe extends to the position below the lower connector and is blocked. The screen pipe and the piston blind plate are automatically released through fracture of the shear pin, external power or manual intervention is not needed, instant communication of a shaft and an oil pipe column is achieved, and the liquid drainage starting time is remarkably shortened.

The invention discloses a carbon foam / paraffin composite phase-change material for thermal management of a lithium ion battery and a preparation method and application of the carbon foam / paraffin composite phase-change material. Low-cost commercial melamine foam is used as a template to prepare carbon foam, and the carbon foam and paraffin are compounded through a vacuum impregnation process to obtain the carbon foam / paraffin composite phase-change material; wherein the carbon foam is prepared by heating and carbonizing melamine foam in a stepped manner under the protection of nitrogen, and the compounding of the paraffin and the carbon foam is realized by adopting vacuum impregnation. The problems that a traditional pure paraffin phase-change material is low in heat conductivity and prone to deformation and leakage, and a metal-based composite phase-change material is high in cost, large in density and prone to corrosion are solved, the prepared foamy carbon / paraffin composite phase-change material is low in density and cost, the heat conductivity is remarkably improved compared with that of pure paraffin, and the thermal stability is excellent within the working temperature range of a lithium ion battery. When the lithium ion battery is applied to thermal management of the lithium ion battery, the lithium ion battery can be maintained for a long time in a phase change temperature range, and an economical and efficient solution is provided for thermal management of batteries of electric vehicles and energy storage equipment.

The utility model relates to the technical field of piston rods, and discloses a spiral piston rod structure which comprises a piston rod and a piston installed on the piston rod, external threads are arranged on the outer side of one end of the piston rod, the other end of the piston rod is of a smooth structure, internal threads are arranged at one end of the inner side wall of the piston, and the other end of the inner side wall of the piston makes contact with the smooth face of the piston rod. A groove is formed in the outer side of one end of the piston, through holes are formed in the two sides of the inner side wall of the groove, a sealing ring is inserted into the groove, a cavity is formed in the sealing ring, the two sides of the inner side wall of the cavity are communicated with pipelines, and a diaphragm is fixedly connected into the cavity in the radial direction of the sealing ring. According to the utility model, hydraulic oil in the cylinder body enters the cavity, so that the sealing ring expands towards the side wall of the cylinder body to extrude the inner side wall of the cylinder body, and the leakage of the hydraulic oil from the outer side of the sealing ring is reduced; the hydraulic oil in the cavity enables the sealing ring to expand towards the side wall of the cylinder body, and a gap between the sealing ring and the cylinder body is eliminated.

The invention discloses a preparation method of a composite phase change fiber, the composite phase change fiber and application of the composite phase change fiber, and the preparation method comprises the following steps: (1) adding octadecane microcapsules into an aqueous solution containing sodium alginate, and stirring I to obtain a solution I; (2) adding graphene nanosheets into the solution I obtained in the step (1), stirring II to obtain a spinning solution, and standing; and (3) putting the standing spinning solution obtained in the step (2) into a wet spinning device for wet spinning, and drying to obtain the composite phase change fiber, wherein in the wet spinning device, an outlet at the tail end of a spinning head is arranged in a coagulating bath. The process condition requirement is low, and the prepared phase change fiber is linear, has the characteristics of no leakage, high heat storage density, no toxicity, good flexibility, excellent light absorption performance and the like, can adjust the enthalpy value, and has a great prospect in the field of human body heat management.

The utility model relates to the field of electronic cigarette discloses an air switch air channel structure of preventing condensate, including zinc alloy shell, PCB assembly, air adjusting device, POD oil storehouse base and data line storage mechanism, data line storage mechanism includes fixed box, the fixed box in top end fixed setting has micro motor, the micro motor output fixedly covers and sets up one no. In the utility model, the data line does not need to be carried additionally, the problem that traditional data line is lost or forgotten can be effectively avoided, after charging, the micro motor can be started to wind the data line neatly back to the outer end of the first binding roller.

The utility model relates to the technical field of latex powder conveying, and discloses a latex powder conveying device which comprises a movable base, a conveying pipe and an auger, the left end of the conveying pipe is fixedly connected with a motor, the top end of the left end of the conveying pipe is fixedly connected with a discharging hopper, and the middle of the conveying pipe is fixedly connected with a lantern ring. Auxiliary rods are fixedly connected to the front side and the rear side of the lantern ring correspondingly, a rack rod is rotatably connected to the bottom end of the lantern ring, a sleeve frame is slidably connected to the outer portions of the auxiliary rods, a protective shell is fixedly connected to the top end of the sleeve frame, a rocker is rotatably connected to the middle of the protective shell, and a driving gear is fixedly connected to the middle of the outer portion of the rocker. And the middle part of the protective shell is rotationally connected with a connecting shaft. According to the device, the height of the device can be easily adjusted in a labor-saving mode, and meanwhile the device has the functions of effectively buffering vibration and protecting the device in the operation process.

The invention discloses a high-stability liquid pumping device for contact lens care solution production, and relates to the technical field of care solution pumping, the high-stability liquid pumping device comprises a plurality of transportation assemblies, each transportation assembly is provided with a liquid discharging assembly, one liquid discharging assembly is provided with a pumping assembly, and each transportation assembly comprises two symmetrically arranged supporting brackets. According to the high-stability liquid pumping device for contact lens care solution production, through the pressure relief assembly, a motor in the pressure relief assembly drives a hollow column to synchronously rotate, an open groove is used for continuously conveying care solution, the conveying efficiency is guaranteed, meanwhile, instantaneous impact force generated by an infusion pump is counteracted, efficient pressure relief is achieved, and the production efficiency is improved. The position of the adjusting plate is adjusted through magnetic repulsive force of the electromagnetic block and the permanent magnet block, the effective liquid containing space of the open groove can be flexibly changed, the liquid feeding speed requirements of containers with different capacities are met, filling sputtering of a small-capacity container is avoided, the filling efficiency of a large-capacity container is guaranteed, and the production loss of the care solution is remarkably reduced.

The utility model relates to the technical field of proportional control valves, in particular to a multipurpose proportional control valve. The oil return valve comprises a valve block, an ascending module and a descending module are installed on the valve block, and the valve block is provided with a pressure oil channel used for oil feeding, a first oil return channel used for oil returning and a second oil return channel used for oil returning. The rising module comprises an electromagnetic rising proportional valve and a pressure compensation valve which are integrally installed, one end of the rising proportional valve is connected to a pressure oil channel, the other end of the rising proportional valve is connected to an execution channel used for being connected with an oil cylinder, and the rear portion of the rising proportional valve is connected with a one-way valve module; the descending module comprises an electromagnetic descending proportional valve, the outlet end of the descending proportional valve is connected to the second oil return channel, and the descending proportional valve is further provided with an overflow valve module in parallel. The ascending module, the descending module, the overflow valve module and the one-way valve module are combined, the structure is compact, and the whole machine can be conveniently arranged under the condition that the space of a walking machine is limited.

This utility model discloses a boiler flue gas dust removal and desulfurization device, belonging to the field of flue gas purification technology. It includes a desulfurization and dust removal tower, a mounting base hood movably installed at the bottom of the tower, a desulfurization module located inside the tower, and a dust removal module mounted on the mounting base hood. The tower has an exhaust port at its upper end. The dust removal module on the mounting base hood performs graded filtration and removal, significantly improving the overall dust removal effect. The boiler flue gas after dust removal forms a counter-current with the downward-falling absorbent liquid, greatly increasing the contact area and contact time between the absorbent liquid and the flue gas, thus significantly improving the desulfurization effect. The desulfurization and dust removal tower and the mounting base hood are movably connected, with sealing components to ensure no leakage of flue gas and residual liquid, and to facilitate quick separation for replacing the suction strip or cleaning the dust removal screen, improving maintenance efficiency.

The application discloses an aero-engine test stand injection system and a regulating method, relates to the technical field of aero-engine test stands, and solves the problem that the test stand injection system is difficult to adapt to the change of exhaust characteristics and test working conditions of different types of engines. The first-stage injection pipe, the second-stage injection pipe and the third-stage injection pipe are sequentially and slidably arranged on the slide rail, and the distance between the first-stage injection pipe, the second-stage injection pipe and the third-stage injection pipe is adjusted by the distance adjusting device; the inlet end of the first-stage injection pipe is detachably provided with a replaceable flow guide cover, the replaceable flow guide cover is provided with a flow guide block, and the flow guide block is provided with a nozzle; and the inlet end of the second-stage injection pipe and the third-stage injection pipe is provided with a flow guide cover. The application is designed in cooperation with the modular replaceable flow guide cover and the multi-stage dynamic adjustable injection pipe, and realizes the self-adaptive matching of the injection system to different engine exhaust flow, temperature and pressure.

The application provides a packer, which comprises a packer body, an expansion cone sleeved on the packer body and internally connected with the packer body through a first sealing element, an expansion sleeve connected on a tapered part of the expansion cone, the expansion sleeve being provided with a second sealing structure for sealingly connecting an outer sleeve in operation, a support sleeve having one end connected with and supporting one end of the expansion sleeve and the other end connected with the packer body in a direction away from the expansion cone, and a locking ring fixedly connected with the support sleeve and locking the support sleeve on the packer body. The packer is resistant to high temperature and high pressure, has good adaptability to the sleeve, and has good anti-suction and energy storage and tightening effects.

This invention discloses a sterilizer, relating to the field of environmental treatment, comprising a main fan, a return air duct, a first outlet air duct, a vaporization chamber, and a second outlet air duct. The air inlet of the main fan is connected to the end opening of the return air duct, and the air outlet of the main fan is connected to the beginning opening of the first outlet air duct. The end opening of the first outlet air duct is connected to the air inlet of the vaporization chamber, and the air outlet of the vaporization chamber is connected to the beginning opening of the second outlet air duct. The vaporization chamber is equipped with a dual-fluid atomizing nozzle and a heater, and also includes a disinfectant storage tank, a metering pump, and an air pump. The inlet of the metering pump is connected to the disinfectant storage tank, the outlet of the metering pump is connected to the supply port of the dual-fluid atomizing nozzle, and the air outlet of the air pump is connected to the supply port of the dual-fluid atomizing nozzle. It achieves sterilization of the entire internal cavity without blind spots or dead angles, achieving a kill rate of up to 99.9999% for target microorganisms. It has a compact structure and strong versatility, and can be used for sterilization of closed equipment as well as room sterilization, meeting the relevant requirements of biosafety laboratories.

This utility model belongs to the field of chemical equipment technology, specifically a catalyst addition device for a reaction vessel, including a reaction vessel body; a guide pipe is fixedly connected to the top of the reaction vessel body; the guide pipe penetrates the surface of the reaction vessel body; a support rod is fixedly connected to the bottom of the guide pipe; and a feed inlet is provided at the top of the guide pipe. Through the filter plate structure, this design is not only simple and convenient to operate, but also intercepts mechanical impurities and crystals in the catalyst through the filter plate, preventing impurities from entering the reaction system, thereby significantly reducing the impurity content in the product, such as metal ions and solid particles, improving product purity and stability, and further improving processing quality. Moreover, the mechanical vibration achieves an anti-clogging function, reducing downtime caused by cleaning the filter device and greatly improving production efficiency. Compared with complex electronic induction or hydraulic backwashing systems, it has the advantages of simple structure and low maintenance cost.

The utility model relates to a multifunctional spray bottle body belongs to daily necessities technical field. The bottle body is equipped with multi-specification adapter, can be adapted to multiple nozzles to realize repeated use, is equipped with multiple clamping grooves for fixing nutrient solution / medicine bottle, combines with scale rubber ball liquid taking pipe to realize accurate liquid taking, side face designs water inlet and hopper structure, is convenient for quick dispensing of medicinal liquid. The adapter, the nozzle, the liquid taking pipe and the bottle body adopt interference fit, the clamping groove and the medicine bottle are small interference fit, and the hopper is fixed through wedge assembly. The utility model realizes nozzle multifunctional adaptation, accurate dispensing of medicinal liquid and quick replenishment, convenient operation, and is suitable for different plant maintenance needs.

This invention provides a method for preparing hydrogen and sulfur from solid waste gypsum through reduction and acidification in a cement kiln, relating to the field of solid waste disposal technology. The method involves targeted local modifications to a novel dry-process cement clinker rotary kiln production system. Using desulfurized gypsum, phosphogypsum, and other solid waste gypsum as raw materials, the gypsum is crushed, ground, preheated, and dehydrated. Then, it is calcined in a modified three-lobe gravity semi-suspended rotary kiln at 800–1100℃ in a reducing atmosphere to generate high-purity calcium sulfide. After sealed cooling, the calcium sulfide reacts with byproduct hydrochloric acid to produce high-purity hydrogen sulfide. The hydrogen sulfide is then used to co-produce hydrogen and sulfur via a medium-assisted electrochemical decomposition method, or high-purity sulfur can be directly prepared using the Claus process. This invention achieves full resource utilization of solid waste gypsum using existing cement kiln equipment, requires minimal modification, has low investment costs, and enables the cascade utilization of CO waste gas and kiln waste heat, reducing overall energy consumption by more than 30% compared to traditional processes.

The utility model relates to hydrogen nitrogen detection instrument technical field, and disclose a kind of hydrogen nitrogen detection instrument valve island structure, including valve island, the top of the valve island is provided with valve block, the valve block is equipped with multiple solenoid valves, the side of the valve island is opened with hydrogen nitrogen gas source import, high-pressure gas source import, vacuumizing mouth and test mouth, the inside of the valve block is punched and communicated each solenoid valve, the solenoid valve is connected with valve block detection through screw, and it is provided with sealing ring at installation place, the top of the valve island is installed with control PCB. This hydrogen nitrogen detection instrument valve island structure, solenoid valve is integrated and installed to valve island, for testing process different time instant gas circuit switching, and hydrogen nitrogen gas source import, high-pressure gas source import, vacuumizing mouth, test mouth are integrated to the same side surface of valve island, instrument and external gas source and product are conveniently docked, the overall layout of this valve island structure is compact, occupies small space, external docking is convenient, there is no leakage.

The application belongs to the technical field of electromagnetic shielding materials, and particularly relates to a flexible phase change material with heat-conducting insulation and electromagnetic shielding performance, and a preparation method and application thereof. The method comprises the following steps: dispersing silver nanowires in ethanol, and then performing vacuum filtration to obtain a silver nanowire film; dissolving polystyrene in a mixed solution of tetrahydrofuran and water, then adding boron nitride fillers to mix, obtaining a slurry, then pouring the slurry onto the surface of the silver nanowire film, and standing to obtain a functional carrier film; and finally, immersing the functional carrier film and the phase change material in a vacuum oven to obtain the flexible phase change material. The preparation method is simple and convenient to operate, each step adopts conventional experimental equipment and process, and does not need complex special equipment, which is beneficial to reducing production cost and improving production efficiency. The prepared phase change material is integrally formed without layering, avoids layering damage caused by performance difference between layers, further guarantees application stability, and is beneficial to realizing long-term stable use.

The application provides a rocket engine tail nozzle closure, the pressure bearing surface of the closure is a spherical surface with an inner convex and outer concave shape, and reinforcing ribs are uniformly distributed in a radial manner on the concave surface; the thickness of the pressure bearing surface changes in a gradient manner, the thinnest part is in the center of the circle, and the thickness gradually increases towards the edge; the closure is integrally formed by injection molding; the injection molding material is short carbon fiber reinforced polyether ether ketone, which contains 10-30% short carbon fibers in terms of mass fraction. The application can take into account both low pressure sealing and high pressure reliable rupture: under the action of an internal and external pressure difference of 0.2±0.02 MPa, the adhesive interface is not detached, the closure is not ruptured or excessively deformed, and excellent air and liquid tightness is exhibited, while reliable rupture can occur in a pressure range of 0.20-1.5 MPa, and the number of fragments generated is 8-10 pieces and the size is small.

The utility model relates to air purification equipment field discloses a kind of air purification equipment of multistage filtration structure, including shell, the inner wall of shell is fixedly connected with fixed seat, the top of shell is detachably connected with top cover, the inside of fixed seat is provided with fixed mechanism, the fixed mechanism includes disc and clamping block, the inner wall of fixed seat is rotatably connected on disc, the top of disc is fixedly connected with knob, the surface of disc is fixedly connected with control bar, the inner wall of fixed seat is slidably connected on clamping block.In the utility model, by setting fixed mechanism, rotating knob drives disc rotation, and then make pressing plate to the direction of filter plate translation, drive clamping block and filter plate are tightly pressed on the inner wall of fixed seat, improve the sealing performance of filter plate installation, ensure that there is no leakage between filter plate and fixed seat inner wall, ensure that airflow is completely filtered by filter plate, increase filtration resistance and then improve purification efficiency.

This invention discloses an environmentally friendly construction waste resource recovery device, comprising: a mounting frame, a crushing component at the top of the mounting frame, a dust suppression component on the crushing component, and a discharge box and a water storage tank inside the mounting frame for solid-liquid separation of crushed materials and wastewater, the discharge box and the water storage tank being fixedly connected; in this invention, the pump, inlet pipe, outlet pipe, circulation pipe, spray cylinder, and spray holes of the dust suppression component work together to quickly and evenly spray water mist during the crushing of construction waste, efficiently adsorbing dust, effectively suppressing dust diffusion, avoiding dust pollution of the surrounding environment and harm to the health of operators. Simultaneously, the water used for dust suppression can be purified and recycled through the water storage tank, eliminating the need for additional large amounts of clean water, saving water resources. Furthermore, the spray cylinder is flush with the inner side of the crushing hopper, not affecting material crushing and falling, adapting to the actual needs of crushing operations, and improving the environmental friendliness and practicality of the device.

The application provides a microfluidic chip for filling seabed sediments, a preparation method and application thereof. The microfluidic chip comprises a transparent cover plate layer and a substrate layer which are arranged in close contact. A main flow channel cavity, an injection channel and an outflow channel are arranged on one side of the substrate layer close to the transparent cover plate layer. The main flow channel cavity is filled with seabed sediment particles to form a porous medium area. An inflow port and an outflow port are arranged on the transparent cover plate layer. The inflow port is connected to the injection channel, and the outflow port is connected to the outflow channel. The application can simulate the pore structure characteristics of real seabed sediments, realize the visualization of hydrate phase transformation, solid particle and multiphase fluid migration process in sediments, break through the limitation of artificial pore micro-observation, and has important significance for analyzing phase transformation and multiphase seepage problems in the process of hydrate exploitation.

The invention provides a cardiovascular intervention injector convenient to operate, and relates to the technical field of medical instruments. An internal control part is arranged in the injection part; a limiting part is arranged outside the injection part; through collaborative design of an inner matching block and a torsion inner block, rapid switching between a direct pushing mode and an outward pushing mode is achieved, medicine in a medicine storage body can be directly pushed in the direct pushing mode, other medicine can be pushed in the outward pushing mode by connecting an external torsion head with external medicine adding equipment, and multi-medicine delivery can be completed without detaching the device or replacing an injector; the external matching cylinder, the position adjusting knob block and the displacement sleeve are in threaded transmission fit, the relative distance between the stopping contact and the needle point of the intervention needle body can be accurately adjusted, the puncture depth can be preset, and the problems that a traditional injector is generally designed in a single-cavity single-medicine storage mode, only can load single medicine, and cannot be used for storing medicine are solved. Therefore, the problem that the injector needs to be frequently disassembled and replaced to complete multi-drug delivery in an operation is solved.

The utility model discloses a honing head with multiple oilstone protection wings, and particularly relates to the technical field of honing heads, the honing head comprises a honing head body, oilstones are installed on the outer side of the honing head body, the two sides of the oilstones are fixedly connected with the protection wings, and a disassembly and assembly mechanism is arranged between the honing head body and the oilstones; the dismounting and mounting mechanism comprises a mounting connecting plate, the mounting connecting plate is fixed to one side of the oilstone, and a threaded groove is formed in the surface of the top of the mounting connecting plate. According to the utility model, through the arrangement of the dismounting and mounting mechanism, the oilstone is quickly mounted and replaced, the oilstone is fixed on the honing head, the maintenance time and cost are obviously reduced, the protective wings are made of polyurethane materials and fixed on the two sides of the oilstone, the oilstone can be effectively prevented from being externally impacted or abraded in the machining process, and meanwhile, the service life of the oilstone is prolonged. The flexible materials of the protective wings can absorb vibration generated in the machining process, the machining stability is improved, vibration marks and defects on the surface of the workpiece are reduced, and the machining quality is remarkably improved.

The utility model discloses a telescopic adjustable warm air pipe, which comprises an inner pipeline and an outer pipeline, one end of the inner pipeline is inserted in the outer pipeline through an adjusting mechanism, the adjusting mechanism comprises a fixed ring, a sliding ring and a screw rod, the fixed ring is fixed on the inner wall of the outer pipeline, the sliding ring is arranged in a limiting groove arranged on the outer side of the inner pipeline, and the screw rod is fixed on the inner wall of the outer pipeline. The threaded rod penetrates through a threaded hole in the side face of the fixing ring to be movably connected with the sliding ring, a sealing ring is arranged at the end of the inner pipeline, and a hoop with adjustable tightness is arranged in a tightening groove in the outer side of the outer pipeline. The telescopic warm air pipe is scientific and reasonable in structural design, telescopic adjustment of the inner pipe in the outer pipe is achieved, the problems that a traditional warm air pipe is fixed in length and complex in adjusting structure are solved, operation is easy and convenient, the adjusting precision is controllable, a double-sealing structure is formed, the problem that air leaks easily at the joint of an existing warm air pipe is solved, and it is ensured that no leakage exists in the warm air conveying process.

This utility model discloses an acetone adsorption and recovery device, relating to the field of acetone adsorption and recovery technology. The utility model includes a base plate, with a recovery box fixedly connected to the top of the base plate; a particulate filter assembly is installed on the top of the recovery box, the particulate filter assembly including a vertical pipe connected to the top of the recovery box, a first gear movably connected to the top of the vertical pipe, a fixed pipe movably connected to the top of the first gear, and a filter cylinder fixed inside the fixed pipe; a rotating spray assembly is installed inside the recovery box, the rotating spray assembly including a fixed cylinder fixedly connected to the bottom of the recovery box. This utility model, through the filter cylinder and cleaning brush in the particulate filter assembly, can effectively remove particulate impurities from the exhaust gas, preventing them from occupying adsorption sites, thereby improving the adsorption efficiency of acetone. The design of the rotating spray assembly allows the diverter plate and connecting frame to rotate, achieving uniform spraying, enhancing gas-liquid contact efficiency, and further improving the acetone recovery rate.

The utility model relates to the technical field of PTFE elbows, in particular to a corrosion-resistant and high-temperature-resistant PTFE elbow bead entering structure for a specific connector, and aims to solve the problem that hose sealing and cap falling prevention are difficult to achieve at the same time. The structure comprises an elbow body with threaded grooves at two ends, a cap in threaded connection and an internal bead inlet body. A conical clamping sleeve and a sealing gasket are arranged in the cap, and the hose is pressed to form sealing when the cap is screwed. The inlet end of the elbow is sleeved with an annular frame with a clamping frame, and the annular frame is locked with the auxiliary nut through a limiting block. After the cap is tightened, the clamping frame is clamped into the clamping groove of the cap to achieve falling prevention. According to the scheme, the conical clamping sleeve is clamped and matched with the ring frame, so that the cap is prevented from loosening while the sealing performance of the hose is ensured, and the connection reliability in a high-temperature corrosion environment is improved.

The invention discloses an automatic telescopic reverse countersinking cutter, relates to the technical field of reverse countersinking cutters, and aims to solve the technical problems that machining accidents occur due to inaccurate positioning during reverse countersinking, and the machining efficiency is influenced by cutter avoiding action. The invention has the following advantages: firstly, the step of feeding without avoiding is realized through the automatic retraction and release of the tool apron, the redundant operation is omitted, and the processing efficiency is greatly improved; 2, a two-stage elastic buffer structure is designed, so that hard collision caused by positioning deviation is effectively avoided, and the loss of cutters, workpieces and equipment is reduced; thirdly, head and tail dual axis positioning protection is adopted, the axis deviation problem of sliding connection is solved, and the counter sinking machining precision is remarkably improved; fourthly, cutting heat recycling multi-stage utilization is achieved, passive autonomous operation is achieved in the whole process, and external power and manual intervention are not needed; and fifthly, a whole-course uninterrupted positive pressure protection system is constructed, the overall service life of the tool is greatly prolonged, and the machining efficiency, precision, safety and equipment durability are all considered.

The utility model relates to a kind of non-pneumatic tire high-low temperature vulcanization flexible mould, is equipped with external flexible mechanism and built-in flexible mechanism;External flexible mechanism is equipped with upper ring, middle die cover and pattern block, external flexible mechanism drives upper ring through the upper hot plate of vulcanizing machine to drive middle die cover to realize mold action of opening and closing pattern block;Built-in flexible mechanism is equipped with flange, inner die cover and inner die slider, inner die slider is equipped with large parting slider and small parting slider, which can support blank when closing, flange is adapted with general vulcanizing machine;Built-in flexible mechanism drives inner die slider action by the center mechanism action of vulcanizing machine, realizes blank clamping and demoulding action.The utility model has the advantages of adapting with general vulcanizing machine, good compactness after tire vulcanization, improving wear resistance.

The application discloses a kind of bubble cleaning devices for pickled vegetable production and processing, including cleaning box, bubble generation structure, rotating structure and filter structure.The even bubble flow is formed by shunt pipe, air pump and filter plate on both sides of cleaning box, rotation stirring is realized by first rotating cage and second rotating cage in the middle, and the filter structure on both sides drives cleaning filter barrel to lift and drain by hydraulic telescopic rod.The device improves the cleaning efficiency of pickled vegetables through the synergistic effect of bubble impact force, water flow turbulence effect and mechanical rotation, while having characteristics such as detachable maintenance, convenient filtering, and is suitable for industrial production scenes.