40results about How to "Guaranteed closure" patented technology

The utility model discloses a kind of packing machine material door device of preventing spouting, including the material door clamping plate and driving mechanism being located in the left and right sides of discharge port;Two material door clamping plates are respectively provided with material blocking structure outside front and back ends, material blocking structure includes left and right misaligned lamination material blocking blade, two material blocking blades are rotatably installed on bracket, and also connected with driving mechanism, driving mechanism drives material door clamping plate and material blocking blade synchronous swing, two material door clamping plates open, when swing clamping bag piece is supported on fixed clamping bag piece, two material blocking blades open and shield outside two material door clamping plates.This application is structural improvement on the basis of original material door clamping plate structure, under the premise of not changing original material door clamping plate, by additionally providing material blocking structure at the front end and rear end of material door clamping plate, to shield the hollow area of the front end and rear end of material door clamping plate, as far as possible guarantee the closedness of material discharge port, reduce the possibility of material spouting after falling, reduce material splashing, guarantee that packing machine discharging environment is pollution-free.

The application discloses a kind of oilfield production and geological reserves homing method, system and equipment medium, the oil and gas products of each production unit of oilfield block is extracted, and actual production data is obtained;Determine whether the actual production data of block oil and gas products and the sum of the actual production data of each well oil and gas products in the block is closed, otherwise complete or restore;Determine whether actual production data includes non-geological unit production, if so, then data correction is carried out;Determine the oil and water splitting coefficient of each oil well, and the actual production data is split according to the splitting coefficient.Single well production splitting result is homed to data, and the actual production data of the reserve unit in proven geological reserves and the test area unit outside proven geological reserves is obtained respectively.The production of oil and gas products of oilfield and geological reserves are completely matched, so that the reserve index of reservoir is objective and true, which can effectively guide the decision and production of oilfield development plan.

The utility model discloses a fireproof door with window belongs to fireproof door technical field, including the door board, the surface of door board is provided with fireproof glass window and the material window, the upper and lower sides of fireproof glass window are equipped with a plurality of smoke exhaust hole that penetrates the door board, and the surface of door board is equipped with the track, and the baffle that is used for selectively closing the material window is slidably installed in the track, and the surface of baffle is installed with the positioning assembly that is used for locking it in the material window closed position, door board is equipped with inductive type sealing assembly at fireproof glass window, and this assembly is used for automatically closing fireproof glass window and a plurality of smoke exhaust hole under the preset condition, and the baffle and inductive type sealing assembly are inlaid with sealing strip on the side of contact with door board. The utility model has daily convenience and security, can distinguish fire source position and make the optimal response.

This utility model relates to the field of sedimentation separator technology, and discloses a high-efficiency sedimentation separator for purifying ferrous sulfate byproducts from titanium dioxide waste. It includes a separation tank, with a separation mechanism fixedly connected to the middle of the inner wall of the tank. This separation mechanism is used to thoroughly remove internal contaminants. A sealing mechanism is fixedly connected to the top of the outer wall of the separation mechanism to seal the separator. An inspection mechanism is fixedly connected to one side of the outer wall of the separation tank. The separation mechanism includes a feed pipe, which is fixedly connected to the top of the outer wall of the separation tank. In this utility model, the ferrous sulfate byproduct solution from titanium dioxide waste enters through the feed pipe, and the reagent is introduced through the discharge pipe and the diversion pipe. A motor drives the stirring blades to rotate, preventing leakage and the entry of impurities. The clarified liquid is discharged from the discharge pipe, and a portion can be returned through the diversion pipe. The inspection mechanism is used to monitor the liquid level, water quality, and equipment status to ensure operational effectiveness.

This application discloses an auxiliary tooling for sealing and testing the air tightness of a wheel hub assembly's air passage, relating to the field of air tightness testing technology. It includes: a positioning seat for placing the wheel hub assembly; a partition plate on the positioning seat; and bolts connecting the positioning seat, partition plate, and pressure plate. Two opposing sealing groups are fitted onto the bolts between the partition plate and the pressure plate. The ends of the variable-diameter bodies in the two sealing groups, with their far ends abutting against the partition plate and the pressure plate respectively, and their near ends abutting against a baffle plate, are fitted between the baffle plate and the bolts. A rubber sleeve is placed around the variable-diameter bodies. When the nut and bolt are tightened to press down the pressure plate, the diameter of the variable-diameter bodies increases, pushing the rubber sleeves outwards. The two rubber sleeves then abut against the inner diameter of the oil seal seat rings. This solves the problems existing in current wheel hub assembly air passage air tightness testing processes, avoids damage to the seals during testing, improves the accuracy of test results, reduces manual labor intensity, increases testing efficiency, and meets production needs.

This utility model discloses a multifunctional telescopic rodent-proof device, belonging to the technical field of rodent-proof devices, specifically a rodent-proof box. The rodent-proof box contains an electric shock component. A through hole is provided on one side of the box, and a door is located on the other side. A fixing component is installed inside the through hole. In this utility model, when the door is closed, a trigger rod is pushed, causing a connecting rod to slide and compress a spring. The connecting rod drives a first gear to rotate via a sleeve, and a second gear drives a conductive base plate to slide via a second lead screw. The conductive body is pushed out of the rodent-proof box to shock rats that crawl through the gaps inside. When the door is opened, a second spring pushes a support plate to reset the connecting rod. The second gear drives the second lead screw to reverse, causing the conductive body rodent-proof box to retract back into the box. This allows the extension and retraction of the conductive body to be automatic with the opening and closing of the box door, preventing accidental injury to personnel and improving the safety and efficiency of the device.

The utility model discloses a liquid metal packaging structure, which comprises a sealing frame and a heat dissipation piece, the sealing frame comprises a frame, a first elastic sealing ring and a second elastic sealing ring, the middle area of the frame is provided with an accommodating area, a chip is arranged in the accommodating area, an annular groove is formed between the chip and the frame, the first elastic sealing ring is embedded in the bottom of the annular groove, and the second elastic sealing ring is embedded in the bottom of the annular groove. The second elastic sealing ring is arranged on the periphery of the frame in a surrounding mode, the heat dissipation piece is arranged on the end face of the frame in a covering mode, the heat dissipation piece, the chip, the first elastic sealing ring and the frame jointly define a sealed space used for being filled with liquid metal, and the frame comprises a plurality of holes and has compressibility. The liquid metal packaging structure provided by the utility model realizes efficient heat conduction and can reliably seal the liquid metal under pressurization.

This invention provides a modular high-voltage incoming line cabinet adapted for top-in, top-out wiring, including a cabinet body. The top surface of the cabinet body has an inlet and an outlet on its front and rear sides, respectively. Both the inlet and outlet are equipped with wiring components, each including a wiring board, a fixing plate, a sliding rod, and a bidirectional threaded rod. This invention offers flexible wiring adjustment and strong adaptability. The inlet uses a sliding wiring board design, which, combined with the driving structure in the limiting component, allows for flexible adjustment of the wiring board's lateral position according to the actual connection position of the electrical components. This ensures that the cable connection to the electrical components remains reasonably perpendicular, effectively reducing cable bending and minimizing signal interference and insulation wear risks. The outlet wiring board is fixedly installed, complementing the inlet. Combined with correspondingly distributed oblong grooves and round holes on the partition, this ensures precise correspondence between the inlet and outlet paths, meeting the needs of different wiring scenarios.

This utility model provides a clamping mechanism for internal hole sandblasting, comprising: a sandblasting box, the bottom of which is connected to a material receiving hopper, a shielding net fixedly connected to the upper end of the inner wall of the material receiving hopper, a control seat fixedly connected to the rear end of the inner wall of the sandblasting box, and a bearing seat fixedly connected to the bottom of the control seat; a driving unit, which is mounted on the control seat and the sandblasting box, and an assembly seat fixedly connected to the driving unit, with a sandblasting head mounted at the front end of the assembly seat; and a transmission unit, which is mounted inside the bearing seat and connected to the driving unit. This clamping mechanism for internal hole sandblasting, through the driving unit, controls the vertical movement of the sandblasting head, while simultaneously driving the fixed unit to rotate through the transmission unit, achieving uniform sandblasting of the workpiece's inner hole. During sandblasting, the sealing part dynamically seals the top of the workpiece's inner hole, reducing sand leakage and preventing equipment jamming and frequent shutdowns for cleaning.

The application discloses underwater laser welding torch, including laser head and drain cover, laser head includes sealed shell, laser head body, welding mechanism and pressure balance mechanism, one end of the sealed shell is detachably connected with the drain cover, the laser head body is arranged at one end of the sealed shell away from the drain cover and extends into the sealed shell, the welding mechanism is arranged in the laser head body, and the pressure balance mechanism is used for balancing pressure on both sides of the sealed shell. The underwater laser welding torch can guarantee the sealing property of the torch structure under water through the arrangement of the pressure balance mechanism and the drain cover, the local dry method environment jointly created can realize stable forming under the environment of several meters of water depth, the influence of deep water pressure on the drainage effect and the dry method environment is effectively overcome, the requirements of no water and pure argon protection in the weld area are realized, underwater laser welding can be stably and reliably carried out, the welding pool can be better protected, and the weld forming is good.

The utility model is suitable for the technical field of flower planting, and provides a flower planting physical insect prevention device which comprises a supporting ring. The first insect-proof net is fixed on the supporting ring and used for isolating insects, and the first insect-proof net can be arranged outside a flower plant in a sleeving manner; the blocking net is arranged on the supporting ring and used for sealing an insect prevention environment; the supporting frame is detachably mounted on the supporting ring through a fixing bolt, and the supporting frame is used for supporting the blocking net; the supporting rod is detachably installed at the bottom of the supporting ring, a second insect-proof net is installed on the supporting rod, and the supporting rod is matched with the second insect-proof net to expand the insect-proof space. The physical insect prevention device for flower planting is high in flexibility and can be assembled and disassembled according to the height of flower plants and the planting range, and therefore the insect prevention range of flowers can be adjusted.

The utility model discloses a limiting device for chemical reagent storage, which relates to the technical field of chemical reagents and comprises a storage box, a plurality of groups of limiting components are distributed on the inner wall of the storage box at equal intervals, each limiting component comprises a bearing base, and the upper surface of each bearing base is fixedly connected with a positioning lantern ring through a supporting column. A plurality of sets of limiting arc plates are annularly distributed on the inner wall of the positioning lantern ring, and the outer arc surfaces of the limiting arc plates are fixedly connected with buffer springs. According to the utility model, the limiting arc plate in the positioning lantern ring is matched with the buffer spring to realize circumferential elastic clamping, the bearing soft cushion of the bearing base provides bottom buffering, and the sponge limiting cushion of the sealing protective cover realizes top pressing, so that a three-dimensional limiting structure for the reagent bottle is formed, the stable positioning of the reagent bottle in the storage box is ensured, and the working efficiency is improved. And the rubber cushion blocks on the inner arc surfaces of the limiting arc plates are in direct contact with the reagent bottles, and rigid friction is reduced through flexible materials.

The invention relates to the field of electrophysiological catheters, in particular to a balloon type catheter. A balloon catheter includes: an operating handle; the balloon electrode assembly comprises a balloon body and an electrode arranged on the surface of the balloon body; the insertion tube is connected between the operating handle and the balloon electrode assembly; the insertion tube comprises an outer tube and an inner tube, and the inner tube penetrates through the outer tube; the outer tube comprises a bending adjusting section located on the far-end side, the inner tube comprises a bending adapting section located on the far-end side, and the bending adapting section is located in the bending adjusting section; the bending adaptive section is made of a hard material and is provided with a bendable structure, and the bendable structure forms a gap in the pipe wall of the bending adaptive section; the inner pipe further comprises a flexible sealing pipe, and the flexible sealing pipe is located on the radial outer side of the bending adaptive section and used for preventing fluid in the inner pipe from leaking from the gap. The technical problems that an inner tube of a balloon type catheter is prone to collapsing deformation in a tortuous blood vessel path, and the shape of an inner cavity cannot be kept are mainly solved.

The application discloses a protection device and method for cable joint, which comprises a left protection shell, a right protection shell fixedly assembled on the right side of the left protection shell, and a cable joint placed in the left protection shell and the right protection shell; sliding blocks symmetrically arranged into two groups are coaxially and slidingly assembled on the outer sides of the left protection shell and the right protection shell, and the inner sides of the sliding blocks are fixedly assembled on the cables, and compression springs are fixedly assembled on the outer side planes of the sliding blocks, the compression springs are placed in the left protection shell or the right protection shell, and the other ends of the compression springs are fixedly assembled on the inner walls of the outer ends of the left protection shell or the right protection shell; an opening knob is coaxially and rotationally assembled on the right side of the left protection shell, and a locking opening and closing assembly is fixedly assembled in the opening knob; and a heat dissipation and combustion prevention assembly is embedded on the inner wall of the left end of the right protection shell.

The utility model discloses a closed electric cylinder, including electric cylinder body, connecting assembly and sealing assembly, the connecting assembly includes the connecting column of ball screw bottom welding, and the rectangular groove and first circular hole that are set up respectively at the bottom and both sides of connecting column, the utility model discloses a closed electric cylinder, the connecting column of ball screw bottom and the rectangular pivot of servo motor upper end, under the clamping of both sides fixed clamps, can carry out convenient fixed connection, and then to ball screw carries out the steady drive, connecting assembly is convenient for electric cylinder body internal component assembly simultaneously, also is favorable to the dismounting overhaul of electric cylinder body internal component damage, the sealing ring of clamping between electric cylinder body bottom and servo motor and the sealing cover of electric cylinder body top sleeve outer end installation, also can keep servo motor, sleeve and the connecting sealing property between electric cylinder body, and then keep the closure of electric cylinder body inside to the outside world.

The application discloses a kind of three-level n-dimensional digital twin systems supporting coupling operation of coal mine robot group, including terminal layer, edge layer and cloud end layer three levels.The robot group in terminal physical layer generates single-machine behavior level twin in terminal virtual layer based on real-time data through terminal AI model, realizes virtual and real two-way control, and field operator obtains augmented information through AR equipment, feeds back decision-making opinion, and multi-modal control node;Edge virtual layer generates collaborative task level twin based on single-machine behavior level twin, and constructs n-dimensional edge twin system through edge AI model.The computer host of cloud end physical layer provides computing power support for n-dimensional cloud end twin system, and centralized control operator accesses cloud end twin system through VR equipment, to realize remote monitoring and control;Cloud end virtual layer generates global planning level twin based on edge side data, and parallel analysis of n-dimensional cloud end twin system is realized through cloud end AI model, and the optimal global planning is comprehensively obtained.

The invention relates to an oil-cooled motor iron core structure, an oil-cooled motor and a rotary vane welding combination determining method. The oil-cooled motor iron core structure comprises a first assembly, a second assembly and a third assembly. The component I is laminated by a first punching sheet and a rotary sheet, a boss group is arranged on the outer circle side of the component I, and the boss group comprises a first type of boss with a welding groove and a second type of boss without a welding groove; in the first assembly, a first welding bead communicated with the cooling oil channel is formed through the interval between the boss sets, and an end butt welding bead isolated from the cooling oil channel is formed through welding grooves in the first type of bosses at the two axial ends of the first assembly. The assembly II and the assembly III are laminated by a second punching sheet and a rotary sheet, and an oil injection port and another welding groove are respectively formed in the assembly II and the assembly III; the other welding groove of the second assembly is aligned and communicated with the butt welding bead at the head end of the first assembly to form a second welding bead; the other welding groove of the third assembly is aligned and communicated with the butt welding bead at the end part of the tail end of the first assembly to form a third welding bead; the radial inner sides of the second welding bead and the third welding bead are blocked by the second type of bosses so that the second welding bead and the third welding bead can be isolated from the cooling oil channel.

The utility model belongs to the technical field of common buildings, and particularly relates to an assembly system for a layered closed GRC plate model and the GRC plate model, and the assembly system for the layered closed GRC plate model comprises a plurality of side light-transmitting devices, a plurality of side closing devices and a top light-transmitting device; light-transmitting glass in the side light-transmitting devices is connected with the corresponding GRC plates in an inserted mode so that external light can enter the formed crater model through the side light-transmitting devices and the top light-transmitting device. The light-transmitting glass is directly connected between the GRC plates in the side light-transmitting devices in an inserted mode, the GRC plates are also installed in an inserted mode, the light-transmitting glass can be installed between the GRC plates in a hidden mode, meanwhile, the light-transmitting effect is guaranteed, modularized quick installation of components is achieved, the side closing devices are installed between the side light-transmitting devices, the overall sealing performance of the crater modeling is guaranteed, and the service life of the crater modeling is prolonged. In addition, gaps among the components can be reduced, the overall waterproof effect is improved, and the light-transmitting effect is improved by arranging the light-transmitting device.

This utility model discloses a multifunctional mask for oxygen storage and nebulization, including a mask body, a two-way interface, a nebulizing valve, and a nebulizing tube. The two-way interface is located on the mask body and is equipped with an oxygen inhalation valve and a nebulizing valve. The oxygen inhalation valve is used to connect an oxygen storage bag and an oxygen tube. The nebulizing valve is equipped with an inlet and an outlet, and has a valve cavity inside, with a spring valve core at the upper end of the valve cavity. The nebulizing tube is used to interference fit the outlet nozzle of the nebulizer. The end of the nebulizing tube near the outlet is closed, and an opening is provided on the side wall of this end. This utility model, by setting a two-way interface on the mask body and setting a nebulizing valve on the two-way interface, and setting a spring valve core at the upper end of the nebulizing valve, allows the nebulizing tube to communicate with the inside of the mask body through the opening when inserted into the valve cavity of the nebulizing valve. At this time, the spring valve core above the valve cavity can be compressed and retracted. After nebulization is completed and the nebulizing tube is pulled out, the spring valve core can extend downward and block the inside of the inlet, thereby ensuring the sealing of the mask body.

This utility model discloses a portable essential oil massage device, belonging to the technical field of massage therapy devices, which solves the problems of inconvenient essential oil delivery and limited functionality in existing massage devices. The portable essential oil massage device includes a main body and a replaceable massage head. The bottom center of the main body has an insertion hole with two axial protrusions, and an essential oil chamber inside to hold an essential oil bottle. An oil guide tube passes through the top cap of the essential oil bottle and connects to a miniature solenoid valve. A miniature vibration motor with its axis perpendicular to the bottom surface is fixedly installed inside the main body via a shock-absorbing silicone pad. The top insert of the replaceable massage head has a groove matching the protrusions and an oil guide cavity connecting to the bottom micro-hole. The bottom surface of the main body and the top surface of the massage head are magnetically connected by an annular magnetic clasp. Through the synergistic action of the vibration motor and the magnetic insertion structure, the device achieves rapid massage head replacement, precise essential oil delivery, and multi-dimensional vibration massage functions. The unique effects of aromatic essential oils, combined with massage, accelerate blood circulation, promote skin absorption, and enhance the overall effect.

The utility model discloses a portable UHPC steam curing device which comprises a balance weight bag, a supporting frame is movably installed outside the balance weight bag, a heat preservation outer cover is arranged outside the supporting frame in a covering mode, an automatic moisture discharging valve is fixedly installed on the top of the supporting frame, and a steam connector is fixedly connected to the outer side of the heat preservation outer cover. According to the portable UHPC steam curing device, a lantern ring is movably clamped into a limiting groove in the bottom end of a first supporting rod through a limiting column, the first supporting rod is movably clamped into a limiting groove in the bottom end of a second supporting rod through a limiting column at the top end, and a limiting column at the top end of the second supporting rod is movably clamped into a top cover, so that stable building of the whole supporting frame is achieved; the steam curing device is simple in structure, convenient to assemble and disassemble quickly, capable of guaranteeing tight connection of all the components, capable of effectively improving stability and durability of the whole steam curing device, simple and effective in clamping mode in the using process, free of additional fixing tools or steps and capable of greatly improving construction efficiency.

The utility model belongs to underground construction technical field especially for a lane repair work platform, including construction platform device, the outside of construction platform device is provided with the climbing structure and material hoisting structure, the climbing structure and material hoisting structure between diagonal setting, the construction platform device includes the bearing structure, the periphery of bearing structure top is provided with the protective fence, the climbing structure is located at the gap of bearing structure and protective fence, through construction platform device, utilizes bearing structure to be able to to the climbing personnel steady lifting, again cooperation protective fence can effectively protect the climbing personnel, and the setting of blanking window and closure lid, both facilitate the material in the lane repair process to put, can keep the closed nature of platform when not needing to put material, prevent sundries or personnel accidental falling, further improve the operation safety.

The utility model discloses an anti-seismic water supply and drainage pipeline joint structure, and relates to the technical field of pipeline joints. The telescopic pipe comprises a left pipe body, a right pipe body and a telescopic pipe arranged between the left pipe body and the right pipe body, the telescopic pipe comprises a telescopic part and a connecting part, and the connecting part extends into inner cavities of the two pipe bodies and is fixedly connected with the two pipe bodies; a left mounting ring and a right mounting ring are respectively arranged at adjacent ports of the left pipe body and the right pipe body, a group of lantern rings are arranged on the opposite surfaces of the left mounting ring and the right mounting ring along the circumferential direction, and tension springs are hung between the lantern rings on the left mounting ring and the lantern rings on the right mounting ring at opposite positions. The two mounting rings are arranged at the joint of the two pipe bodies, and the group of tension springs are hung between the two mounting rings, so that when the pipe bodies are shocked, the telescopic pipe can be stretched to play a role in flexible shock absorption, and meanwhile, the tension springs can be unfolded along with the shock to limit the stretching of the telescopic pipe to a certain extent through the resilience force of the tension springs; and after the vibration is finished, the extension tube is pulled back and reset by the tension spring.

The invention provides a copper pipe rolling mill with a coaxial guiding function, and belongs to the technical field of copper pipe rolling mills, the copper pipe rolling mill comprises a shell and a copper pipe body, a first motor is installed on the shell, a first gear is fixedly connected to an output shaft of the first motor, a second gear is connected to the outer side of the first gear in an engaged mode, and a cam is installed on the second gear; a pressing rod is arranged on the side face of the cam in an abutting mode, a mounting plate is mounted on the pressing rod, the pressing rod is rotatably connected with the mounting plate, a connecting plate is mounted in the shell, a guide rod is fixedly connected to the connecting plate, the mounting plate is slidably connected with the guide rod, a first alloy steel spring is mounted between the connecting plate and the mounting plate, and a rotating wheel is rotatably mounted on the mounting plate; rollers are fixedly connected to the rotating wheels, and the copper pipe body is located between every two adjacent rollers. The problems that an existing copper pipe rolling mill cannot support the inner side and the outer side of a copper pipe at the same time, a pipe blank is prone to vibration and shaking during rolling, and the production quality of the copper pipe is affected are solved.

The invention relates to the technical field of Bluetooth sound boxes, in particular to a Bluetooth sound box with an NFC quick pairing function, which comprises a sound box main body, a suction cup is arranged at the bottom of the sound box main body, a compensation device is arranged on the sound box main body, the compensation device is communicated with the interior of the suction cup, and the compensation device is used for extracting air in the suction cup; a control device is arranged on the sound box main body, the control device controls the start and stop of the compensation device according to the storage amount of air in the suction cup, the compensation device comprises a mounting seat fixedly mounted at the bottom of the sound box main body, and the suction cup is fixedly mounted at the bottom end of the mounting seat; a mounting cavity is formed in the mounting seat, a communicating hole is formed in the outer side wall surface of the mounting seat, and the communicating hole is communicated with the mounting cavity. The placement stability of the Bluetooth sound box on the placement plane is improved, and the problem that an existing Bluetooth sound box is low in anti-skid performance and reliability is solved.

This invention discloses a suspended fertilization device that integrates ditching and fertilization, relating to the field of ditching and fertilization technology. It includes a ditching device with a suspension rod connecting plate fixedly connected to its rear side. Suspension rods are fixedly connected to the left and right sides of the rear side of the suspension rod connecting plate, and a fertilizer storage bin is fixedly connected to the top of the ditching device. This invention, by incorporating a ditching device, ditching frame, rotating rod, and ditching mechanism, effectively improves the adaptability and stability of ditching and fertilization operations. During tractor turning, the ditching device of the integrated ditching and fertilization machine remains stable, avoiding impact and torsion caused by excessive turning radius, thereby extending the equipment's service life. Specifically, after ditching is completed, the ditching device needs to be retracted. The motor rotates, the turntable drives the track to rotate the second turntable, which in turn drives the rotating rod and rotating rod connecting pipe to rotate, causing the ditching mechanism to rotate along the arc-shaped slide groove. The slider slides, and the ditching wheel is stored inside the outer casing.

The utility model relates to the technical field of vacuum pumps, in particular to a dustproof oil seal and shaft sleeve for a large-pumping-number vacuum pump, which comprises a rotor and a cylinder body end cover, a deep groove ball bearing is sleeved on the surface of the rotor, a mounting groove and a dustproof groove are arranged inside the cylinder body end cover, and a shaft sleeve body is sleeved on the surface of the rotor. A dustproof groove is formed in the shaft sleeve body, a shaft sleeve step is fixedly connected to the side, close to the deep groove ball bearing, of the shaft sleeve body, the surface of the shaft sleeve body is sleeved with an oil seal body, the oil seal body is tightly attached to the surface of the dustproof groove, the surface of the shaft sleeve step is sleeved with a dustproof lip, and the dustproof lip is fixedly connected with the oil seal body. According to the utility model, the problems that dust and particle impurities are easy to accumulate in the vacuum oil in the process of circularly cooling and lubricating the deep groove ball bearing by using the vacuum oil, and when the impurities enter the joint of the inner part of the cylinder body end cover and the rotor, the dust and particle impurities are easily accumulated in the vacuum oil are solved; and abnormal conditions such as clamping stagnation of the rotor and even failure of the vacuum pump are easily caused.

The utility model relates to the technical field of outdoor sound boxes, in particular to a Bluetooth sound box with an outdoor lighting function, which comprises a base component and a lamp post component, a sound production component and an electronic component are arranged in the base component, the electronic component is provided with a sound control circuit and a light control circuit, and the sound production component is provided with a loudspeaker; a light-emitting lamp set and an energy storage battery are arranged in the lamp pole component, a lower end opening of the lamp pole component is communicated with the inner space of the base component, and a passive radiator is arranged at an upper end opening of the lamp pole component to form sealing, so that the inner space of the lamp pole and the inner space of the base jointly form a sealed rear sound cavity of the loudspeaker. In conclusion, the outdoor lamp and the loudspeaker box are innovatively combined, components are reasonably arranged to achieve function integration and space optimization, the internal space is communicated, the passive radiator is additionally arranged to optimize the tone quality, the annular groove, the axial support and the like are utilized to ensure stable and sealed structure, the contradiction between the size and the function of outdoor equipment is effectively solved, and the use experience of a user is optimized.