63results about How to "Resist vibration" patented technology

This utility model relates to a flame-effect decorative lamp. The lamp includes a mounting box, a first end cap and a second end cap at both ends, a decorative mesh connected to the mounting box and located between the two end caps, and an optical component mounted on the mounting box and located inside the decorative mesh. The decorative mesh has a semi-cylindrical curved surface structure with an array of through holes evenly distributed on it. A groove is provided on the back side of the mounting box, within which a mounting plate and a drive cover plate covering part of the groove are located. The drive cover plate and the mounting box together form a chamber for accommodating the drive unit. The optical component includes a diffuser and an aluminum substrate on its back side. The diffuser is fixed to the mounting box by fasteners, and a sealing gasket is provided between them. This utility model achieves a realistic and three-dimensional flame visual effect through the combination of the curved decorative mesh and the array of through holes with the optical component; the back mounting structure and double sealing design significantly improve installation stability and environmental protection level, and the structure is compact and easy to maintain.

The utility model belongs to reagent filling automation equipment technical field discloses a kind of automatic canning machine for reagent filling, including base frame, index transmission system, filling unit, capping unit and gas-electricity integrated system, base frame is by bottom support cabinet and frame skeleton welding structure, and frame skeleton is layered truss structure;Index transmission system is integrated in base frame, and index transmission system includes feed conveyor belt and coaxial link's circular turntable, the edge of the circular turntable is provided with equal-angle arc limiting slot;The filling unit is fixed on the frame skeleton, and the filling unit includes storage hopper and the multiple-channel filling head connected, the end of the multiple-channel filling head is embedded with pneumatic ration valve, and the valve body of the pneumatic ration valve extends liquid injection pipe below.The utility model structure is strong in rigidity, and anti-vibration stable, and index transmission positioning is accurate, and multiple-channel pneumatic ration filling precision is high and anticorrosion, and vacuum chuck capping is reliable against falling off.

The application provides a quick and flexible installation fire-resistant busbar connecting structure, which comprises a fire-resistant busbar tank body, conductive bars are installed at both ends of the fire-resistant busbar tank body, first L-shaped plates and second L-shaped plates are fixedly connected to the opposite side surfaces of the fire-resistant busbar tank body, two parallel first mounting screw holes are formed in the first L-shaped plates close to the two ends, two parallel second mounting screw holes are formed in the second L-shaped plates close to the two ends, connecting mechanisms are arranged at the two ends of the fire-resistant busbar tank body, and more than one first mounting connecting hole is formed in the side surface of the fire-resistant busbar tank body at the two ends; the two cover plates are installed and fixed through the fastening bolts and nuts and the first mounting screw holes and the second mounting screw holes, the stability of the two cover plates after installation can be ensured, vibration and external force impact can be effectively resisted, the cover plates are prevented from being displaced and falling off, and the stable operation of the fire-resistant busbar tank body can be ensured.

The utility model discloses an adjustable combined street marker, which comprises a fixing seat, a sliding groove is arranged on one side surface of the fixing seat, a first tooth surface is arranged on the bottom groove surface of the sliding groove, at least one supporting arm is arranged, a sliding block that is matched with the sliding groove is arranged on the end of the supporting arm, a cavity for accommodating a cam part and a sub-sliding block that is pushed out by the cam part rotating in the cavity are arranged in the sliding block, the sub-sliding block is provided with a second tooth surface that is engaged with the first tooth surface, and an upper and lower connecting plate is arranged on the end of the supporting arm that is away from the sliding block. At least one street marker porcelain bottle is fixed between the upper and lower connecting plates through a shaft part. The utility model pushes the sub-sliding block by the cam part to make the second tooth surface engage with the first tooth surface, effectively resists vibration, solves the problem that the bolt is prone to creep relaxation and causes the sliding block to slide down under the working condition that the street marker bears the line self weight, wind vibration and other alternating loads for a long time, and avoids causing the line sag to change.

The utility model discloses an anthropomorphic dexterous hand and humanoid robot adopting the anthropomorphic dexterous hand. The utility model discloses an anthropomorphic dexterous hand, and the finger driving mechanism includes at least one layer of finger driving motor layer, is equipped with a plurality of finger driving motors in each layer of finger driving motor layer, and each finger driving motor is connected with the finger joint of corresponding hand component through the traction rope, and the number of finger driving motors in each layer of finger driving motor layer is less than or equal to 4; the output shaft of all finger driving motors is outwardly arranged, and the projection in the plane perpendicular to the length direction of arm component does not coincide. The utility model also discloses a humanoid robot, and the anthropomorphic dexterous hand adopting any of the above schemes. The utility model has the advantages of: avoiding the mutual friction, winding and even cutting caused by the path intersection and contact of multiple traction ropes in the narrow space, so that the overall form of the robot arm is more close to the thickness of real human body arm.

The utility model belongs to the technical field of connectors, in particular to a high-stability connector terminal, which comprises a male terminal and a female terminal, and the connecting end of the male terminal and the inserting end of the female terminal are electrically connected through the elastic matching of a first bending part at the top end and a second bending part at the bottom end. The two bending parts are designed to be in an arc shape and are bent towards the interior of the insertion end, the effective contact area is increased through the staggered contact faces, the contact resistance is reduced, and the inclined chamfers and the arc-shaped grooves at the inlets form a double-guiding system, so that through the innovative double-section type elastic contact structure, the connection stability is improved, and the service life of the connector is prolonged. The connector is suitable for scenes such as new energy automobiles and rail transit with strict reliability requirements, and has the remarkable advantages of stable connection, efficient conduction, convenient operation and the like.

The utility model provides a cylindrical lithium ion electric core and battery pack, including metal shell, upper cover, lower cover, positive pole piece, negative pole piece, diaphragm, electrolyte and hollow tube, positive pole piece, negative pole piece and diaphragm are around the hollow tube winding setting, and the support structure around the hollow tube is set to the end of hollow tube, this scheme makes the structure of electric core inside more stable, and the hollow tube in the electric core increases the direct path of additional heat conduction, can promote the heat even distribution of electric core itself, can also effectively transmit the heat from the battery inside.

The application discloses a kind of high flame-retardant temperature-resistant corrosion-resistant optical fiber composite cable and preparation method thereof, belong to cable manufacturing technical field, from inside to outside include optical fiber unit, conductor layer, insulating layer, shielding layer, anticorrosive layer and sheath layer in sequence.Optical fiber unit uses ceramicized silicone rubber buffer layer;Conductor layer is nickel-plated copper alloy stranded wire, and oxidation resistance is enhanced by nano titanium dioxide sol treatment;Insulating layer is three-layer co-extrusion structure;Shielding layer uses aluminum-plastic composite tape and plated tin copper wire braided composite structure;Anticorrosive layer is polytetrafluoroethylene film treated by plasma;Sheath layer uses two-component ceramicized silicone rubber, and it is flexible at room temperature vulcanization, and it is converted into ceramic body at high temperature.The application realizes excellent continuous use stability, strong corrosion resistance in salt spray environment and other performances through the synergistic design of multilayer structure, is suitable for high temperature, corrosion, fire and other harsh environments, significantly improves the safety and durability of composite cable.

The present application relates to track monitoring device technical field, especially relates to a kind of fast installation type track pressure sensor, including bracing plate, crossbeam, support block, pressure sensor, distance adjusting unit and reinforcing unit;The present application can solve the following problems existing when installing the current track pressure sensor: the vibration effect of gradually loosening by being directly fixed on the rail of pressure sensor to rail, affect the fixing effect of pressure sensor, it is difficult to guarantee pressure monitoring precision;Only specific position monitoring of rail, unable to adjust the monitoring position of rail according to monitoring demand, there is limitation;The present application can avoid the vibration of rail directly conducting to pressure sensor by installing pressure sensor on wooden sleeper, and pressure sensor can be fixed comprehensively, prevent pressure sensor from deviating under the action of vibration and affect pressure monitoring precision;In addition, pressure sensor can be lifted and horizontally adjusted, it is convenient to replace monitoring position, convenient operation.

The present application relates to the technical field of plasma cutting, in particular to a positioning cutting device for processing luggage hardware, which comprises a machine tool, the top of the machine tool is fixedly connected with slide rail one and slide rail two, the slide rail one is slidably connected with slide block one, the slide rail two is slidably connected with slide block two, the slide block one is slidably connected with mounting column, and the mounting column is slidably connected with plasma cutting mechanism on one side. The present application realizes the composite functions of blanking, positioning, clamping and other stages by moving the inclined surface sliding block by different distances and cooperating with path switching. The inner expansion type clamping provides a perfect working space without obstruction for the plasma cutting mechanism, ensures the integrity and flexibility of cutting, and through the inner expansion clamping at one end and the end top shaft at the other end, a stable two-end support is formed for the metal rod, and the stable rotation is driven by the driving shaft, effectively resisting the vibration generated during plasma cutting, ensuring the stability of the cutting process, thereby ensuring the high quality and high precision of the cut.

The invention discloses a low-invasion tunnel forced centering support and a mounting method thereof, and belongs to the technical field of tunnel safety monitoring, the low-invasion tunnel forced centering support comprises two right-angle connecting plates, two supporting rods, a top plate and a forced centering base, and each right-angle connecting plate is composed of a first vertical plate and a second vertical plate which are perpendicular to each other; when the device is installed at the vertical corner of the side wall of the vehicle avoiding hole and the side wall of the main hole, the first vertical plate is attached to the side wall of the main hole, one part of the second vertical plate is attached to the side wall of the vehicle avoiding hole, and the other part of the second vertical plate extends out of the side wall of the main hole. A second vertical plate of the right-angle connecting plate above is horizontally connected with a top plate, part of the top plate is located in the vehicle avoiding hole, part of the top plate protrudes out of the side wall of the main hole, and a forced centering base is installed on the top plate and used for installing a measuring instrument and automatically monitoring a plurality of tunnel sections in front and back areas of a corner; the two supporting rods are arranged between the two sides of the top plate and the right-angle connecting plates below the top plate and used for improving the bending resistance and vibration resistance of the top plate, and the stability of the forced centering support is guaranteed.

This utility model discloses an outdoor precision air conditioning unit, relating to the technical field of air conditioning units. The utility model includes an outdoor unit and an indoor unit located on the left side of the outdoor unit. The outdoor unit has a support plate and further includes: a connecting part mounted on the outdoor unit; an anti-detachment part mounted on the outdoor unit; the connecting part includes an installation component mounted on the outdoor unit; and two fixing components, both mounted on the installation component. This utility model, by providing a connecting part, solves the problem that in existing air conditioning units, the fixing of hoses and interfaces often relies on a single snap-fit ​​or simple threaded tightening structure, often requiring repeated adjustments with additional tools to achieve a secure fit. This not only increases installation difficulty but also makes it difficult to ensure uniform fixing force, leading to gaps between the hose and the interface.

This invention provides a modular snap-fit ​​locking mechanism for battery packs in multi-layer energy storage cabinets. The mechanism includes two identical locking plate mechanisms, one of which includes a horizontally positioned transverse plate. The modular snap-fit ​​locking mechanism for battery packs in multi-layer energy storage cabinets provided by this invention employs an adjustable synchronous locking structure, allowing for adaptation to different battery pack specifications without replacing parts. This significantly improves versatility and compatibility, effectively solving the problems of poor adaptability and low versatility in existing fixing methods. Simultaneously, the mechanical locking structure achieves uniform and secure fixing, resisting vibrations during energy storage cabinet operation, preventing battery pack loosening and displacement, and improving installation stability and safety. The device simplifies the assembly and disassembly process, reduces the costs of energy storage cabinet expansion, modification, and maintenance, improves operational efficiency and convenience, and meets the modular and multi-specification compatibility requirements of multi-layer energy storage cabinets.

This utility model relates to the field of traction motor testing technology, specifically a locomotive traction motor tester, including a base. The base has four symmetrically distributed positioning blocks. A limiting mechanism for adjusting the position of the four positioning blocks is also provided on the base. Two symmetrically distributed first push rods and two symmetrically distributed second push rods are slidably mounted on the base. The two sets of first and second push rods are perpendicularly distributed. Each of the four positioning blocks is slidably engaged with a corresponding set of first and second push rods. Through a transmission design where the mounting rod directly drives the first gear and the mounting tube directly drives the second gear, precise linkage adjustment of the four positioning blocks is achieved. The clever combination of ratchet, pawl, spring, and electromagnetic adsorption components achieves bidirectional mechanical locking of the mounting rod and drive rod, preventing vibration from affecting the motor's stability.

The utility model provides a position adjusting mechanism and a camera device using the same. The position adjusting mechanism comprises a camera mounting base arranged on a floating substrate; the horizontal adjusting assembly is arranged on the floating substrate, abuts against the camera mounting base and is used for driving the camera mounting base to move in the horizontal direction relative to the floating substrate by adjusting the horizontal adjusting assembly; the floating substrate is arranged on the bottom plate through the vertical adjusting rod and the vertical guide rod; the vertical adjusting rod is rotatably arranged on the bottom plate, is matched with the threads on the floating substrate and is used for driving the floating substrate to move in the vertical direction relative to the bottom plate by rotating the vertical adjusting rod; the vertical guide rod is arranged on the bottom plate and used for guiding the vertical movement direction of the floating substrate. The position adjusting mechanism and the camera device applying the position adjusting mechanism realize integral sliding of the camera and bidirectional fine adjustment of the lens, and ensure accurate centering of the lens and the light shielding plate.

The utility model relates to the technical field of water-cooling heat dissipation, and discloses an external pipeline auxiliary connecting structure of a water-cooling plate radiator, which comprises a bottom plate, a water-cooling pipe and a top cover, a flow channel for fixing the water-cooling pipe is arranged on the inner surface of the bottom plate, and an inserting block is inserted into the bottom plate and the top cover. A positioning block is inserted into the other end, away from the bottom plate, of the insertion block, a clamping groove with a T-shaped section is formed in the other end, away from the flow channel, of the positioning block, and a clamping block is inserted into the inner surface of the clamping groove. According to the external pipeline auxiliary connecting structure of the water-cooling plate type radiator, the T-shaped clamping groove is matched with the matched clamping block, so that a connecting part can be effectively prevented from falling off; the protruding blocks are connected with the grooves in an aligned mode, the clamping blocks are further limited, the threaded holes are matched with the positioning columns and the threaded grooves, the positioning blocks are fixed when the bottom plate is connected with the top cover, and the multiple fixing modes ensure that the connecting structure is stable and reliable in the using process, resists water flow impact and vibration and avoids loosening and displacement.

The utility model relates to cable installation technical field, specifically disclose a cable group sleeve pipe wall -penetrating waterproof device, include: spacing frame one, it is rectangular with spacing frame two and is pasted wall surface, the spacing frame one inlay fixed has the locating sealing plate no.

The utility model discloses an isolation equipment for chemical safety, including module connecting mechanism, fixed clamping mechanism and clamping auxiliary mechanism, module connecting mechanism includes side plate, top cover, door body, angle plate, clamping pipe and clamping rod, fixed clamping mechanism includes guide swing frame, guide swing groove, centripetal frame, centripetal groove and embedding block, and the clamping auxiliary mechanism includes the guide swing frame, guide swing groove, centripetal frame, centripetal groove and embedding block. And the module connecting mechanism realizes standardized assembly and quick connection of the isolation equipment. Through the combined design of the angle plates, the clamping pipes and the clamping rods, the top cover and the side plates can be rapidly and accurately positioned and firmly connected, accurate centripetal locking of the clamping rods by the embedded blocks is achieved through the fixed clamping mechanisms, the connection strength and stability are remarkably improved through the double-locking design, and vibration and impact in the chemical environment can be effectively resisted.

The utility model discloses a positioning and pressing device for precoated sand shell mold casting, which relates to the technical field of casting, and comprises an upper die holder and a lower die holder, the left side and the right side of the upper die holder are fixedly connected with positioning seats, the left side and the right side of the lower die holder are respectively provided with two groups of positioning plug-ins matched with the positioning seats, each positioning plug-in comprises a plug pin, and the plug pins are inserted into the positioning seats. The positioning seat is provided with an inserting hole corresponding to the inserting pin, the inserting pin can be inserted into the inserting hole to achieve positioning between the upper die seat and the lower die seat, the left side and the right side of the lower die seat are fixedly connected with positioning rods penetrating through the positioning seat, and the top ends of the positioning rods are provided with pressing assemblies pressing the upper die seat. According to the utility model, the problem of dislocation after installation is effectively prevented by means of positioning, fixing, pressing and the like, so that the upper die holder and the lower die holder are tightly connected, the vibration or impact in the casting process is resisted, the displacement after die assembly is prevented, the size error of a casting part is reduced, and the yield and the process reliability are obviously improved.

The invention relates to the technical field of connector terminal assembling equipment, in particular to an automatic connector welding machine which comprises a pair of outer arms arranged in a mirror symmetry mode, and the outer arms are rotationally connected to a base and driven by a first driving mechanism to synchronously rotate in opposite rotating directions. The inner arms are rotationally connected to the base respectively and driven by a second driving mechanism to synchronously rotate in opposite rotating directions, the inner sides of the inner arms are provided with structures for accommodating and fixing the connector terminals, and when the connector terminals are fixed, the end parts of the connector terminals extend to be close to the free ends of the inner arms; the two welding guns are respectively connected to the end parts of the pair of outer arms; in the same rotating plane, the outer arm rotates to be opened and closed on the outer side of the inner arm, and when the inner arm and the outer arm are both located at the closed position, a welding head of the welding gun extends to be close to the free end of the inner arm, and therefore high-precision positioning and synchronous welding of the paired connector terminals can be achieved.

This utility model relates to the field of motor technology and discloses a rotor baffle, rotor structure, motor, and traction machine. The rotor baffle includes: a baffle body with multiple counterweight hole groups arranged radially at intervals on its end face, each counterweight hole group including multiple counterweight holes arranged circumferentially at intervals; and at least one counterweight block disposed within at least one of the counterweight holes. This utility model, through the design of radially spaced multiple sets of counterweight hole groups and circumferentially distributed counterweight holes within each group, provides more selectable counterweight positions. The corresponding hole position can be selected to install the counterweight block according to the specific orientation and size of the initial rotor imbalance, achieving near-precision dynamic balance in one step, significantly improving the correction efficiency. The rationally designed openings, through topology optimization to distribute stress, can reduce the maximum stress concentration factor, effectively improving the deformation resistance of the baffle body. The baffle body formed by the openings can reduce weight while meeting strength requirements.

The utility model relates to a clamp tooling technical field especially relates to a kind of tooling of making bent clamp.The tooling of making bent clamp includes: base, support plate, tightening assembly, the top end of base is fixedly connected with limit rod in symmetry, the top end of base is placed with carrier plate between two limit rods, the left and right ends of carrier plate are fixedly connected with limit block, the top end of carrier plate is fixedly connected with arc-shaped lug, arc-shaped lug is placed with clamp body outside, the top end rear side of base is fixedly connected with support plate, the front top end of support plate is fixedly connected with fixed plate, the top end of fixed plate is fixedly connected with electric push rod, the driving end of electric push rod is fixedly connected with link plate, the inner wall of four corners of link plate is slidably connected with sliding rod, the outside of sliding rod is equipped with strong spring.The utility model greatly improves clamping stability, guarantees processing accuracy, avoids hard contact damage clamp hole inner wall, effectively resists vibration, reduces the risk of loosening.

The invention relates to the technical field of automobile welding fixtures, and discloses an automobile welding fixture with accurate welding points, which comprises a welding table, and further comprises a bracket, a welding point positioning device, a welding point positioning device and a welding point positioning device, the two clamping mechanisms are symmetrically arranged above the welding table and used for clamping the two steel pipes; and the two rotating mechanisms are respectively arranged on the clamping mechanisms. The hydraulic push rod drives the rotating ring, the arc-shaped holes in the rotating ring force all the sliding rods and the movable blocks to synchronously move in the radial direction, the L-shaped clamping blocks are driven to evenly hold the steel pipe from the periphery, and therefore it is guaranteed that the clamping force is evenly distributed, and automatic high-concentricity centering of the steel pipe is achieved; the defects of weld joint misalignment, uneven wall thickness and the like caused by manual clamping eccentricity are fundamentally eliminated, a foundation is laid for forming a high-quality annular butt weld joint, meanwhile, the locking force provided by hydraulic driving is large and adjustable, thermal deformation stress and vibration in the welding process can be effectively resisted, and the clamping state is kept absolutely stable.

The invention relates to the technical field of engineering surveying and mapping, and discloses a constructional engineering cost on-site surveying and mapping device based on an intelligent sensor, comprising a connecting block, a mounting rack mounted on the connecting block, a laser displacement sensor mounted on the mounting rack, and a support rotatably connected to the circumferential surface of the connecting block. Movement of the supports can drive the supporting legs to move synchronously, angle adjustment of the multiple supports can be controlled synchronously, angle adjustment of the supports can be achieved, it is ensured that surveying and mapping personnel can adjust the opening angles of the multiple supports to be the same angle, the situation that in the follow-up surveying and mapping process, the whole device topples over can be avoided, and the surveying and mapping efficiency is improved. The surveying and mapping accuracy can be improved, the laser displacement sensor is protected from being damaged by the field environment, the service life of equipment is prolonged, the consistency of surveying and mapping data is guaranteed, the reliability of the cost result is improved, and the surveying and mapping accuracy and stability of the device can be guaranteed.

The utility model discloses a modularized new rural villa combined structure which comprises a double-layer foundation frame, a sinking cavity formed in the double-layer foundation frame, a lower concrete plate installed in the sinking cavity and an upper concrete plate installed on the upper surface of the lower concrete plate. A left butt-joint plate and a right butt-joint plate are fixedly welded to the left side and the right side of the top end of each double-layer foundation frame correspondingly and used for connecting the two bilaterally adjacent double-layer foundation frames in the X-axis direction. According to the utility model, the double-layer foundation frame, the sinking cavity, the lower concrete plate, the upper concrete plate, the left butt-joint plate, the right butt-joint plate and the like are matched with one another, the double-layer foundation frame which can be butt-jointed front, back, left and right is adopted, and the upper concrete plate and the lower concrete plate are mounted in the double-layer foundation frame to form a double-layer structure; the bearing capacity and anti-seismic performance of the foundation are improved, the stability and durability of the structure are enhanced, and a solid guarantee is provided for safe operation of a building.

This invention discloses a riser drilling internal detector, comprising a drill pipe connection assembly, an instrument compartment, a support rod, a variable diameter spring assembly, and a sensor array. The instrument compartment is located at the bottom of the drill pipe connection assembly, and the variable diameter spring assembly is located outside the instrument compartment. The sensor array is mounted on the variable diameter spring assembly. The variable diameter spring assembly can deform to change its diameter to adapt to changes in the inner diameter of the riser main pipe. The sensor array can closely adhere to the inner wall of the riser main pipe. This invention aims to achieve real-time and efficient detection of the inner wall of a 21-inch riser main pipe using drilling technology. This device adopts a bow-spring type adaptive variable diameter structure, combined with a 24-channel metal magnetic memory sensor array. The internal detector's diameter change range is 480-510 mm, enabling high-resolution scanning of defects such as inner wall corrosion, cracks, and stress concentration in a dynamic drilling environment. This overcomes the problems of complex structure, limited diameter change range, and low detection efficiency in existing technologies.

A sealing enhancement structure suitable for medium and low pressure air ducts includes an air duct with a flange at its end. A first sealing gasket is provided between the flanges of two adjacent air ducts. An L-shaped sealing gasket is provided on the back of the flange. Matching clamps are provided on the outside of the flange, the first sealing gasket, and the L-shaped sealing gasket. Bolts pass through the screw holes on the clamps, the L-shaped sealing gasket, the flange, and the first sealing gasket to tightly connect the two adjacent air ducts. This utility model effectively prevents air leakage at the air duct connection by compressing the sealing gasket through the flange structure with grooves and protrusions, thereby improving the operating efficiency of the system. It avoids the problems of air leakage at the interface and insufficient elasticity and tightness due to insufficient thickness of the flange gasket when using combined flange connections for traditional air duct systems. It has the advantages of simple structure, good sealing performance, and good safety.

This utility model discloses a one-way valve sealing structure for aluminum bottles to prevent secondary contamination, relating to the technical field of aluminum bottles for preventing secondary contamination. The one-way valve sealing structure includes an aluminum bottle with a groove on its bottom surface. A one-way valve assembly is installed on the upper part of the inner wall of the groove, and an anti-contamination component is installed on the lower part of the inner wall of the groove. The one-way valve assembly includes a fixing block, the top surface of which is fixedly connected to the top surface of the inner wall of the groove. An input pipe is installed on the inner wall of the fixing block, and a one-way valve for preventing backflow of stored materials inside the aluminum bottle is installed on the bottom surface of the input pipe. The anti-contamination component includes a sealing plate. This utility model forms a double-sealing structure through the insertion and sealing of the insertion post and the inner wall of the input end, and the auxiliary sealing of the first and second rubber rings, effectively preventing external dust, bacteria, and other contaminants from entering the aluminum bottle, ensuring the purity of the stored materials.