3321 results about "Elastic component" patented technology

An adjustable dumbbell, comprising a dumbbell assembly, a dumbbell seat and dumbbell pieces, the dumbbell assembly comprises a dumbbell bar and connecting discs, which are provided with a positioning groove and a connecting block slidingly connected in the positioning groove, and the connecting disc is provided with an elastic component; the dumbbell assembly comprises a handle grip and gear blocks, and the glove and the gear block are fixed circumferentially, and the gear block has an outwardly pushing part and an inwardly shrinking part in the circumferential direction; the dumbbell piece is provided with a connecting groove, when the connecting block abuts against the shrinking part, the connecting block is separated from the connecting groove; the connecting block abuts against the pushing part, the connecting block is snapped into the connecting groove; when the connecting block abuts against the shrinking part, the connecting block is separated from the connecting groove.

The invention belongs to the field of corrugated pipe detection, and provides a corrugated pipe detection test bench, which comprises a water tank, two sides of the water tank are fixedly connected with fixing seats, the fixing seats are slidably connected with sliding plates, telescopic electric push seats are connected between the sliding plates and the fixing seats, the sliding plates are fixedly connected with sealing mechanisms, and the sealing mechanisms are fixedly connected with the water tank. The two sealing mechanisms can fix and seal the two ends of the fixing base of the corrugated pipe, stretching assemblies are arranged in the sealing mechanisms, a rubber pipe is arranged between the two stretching assemblies, and the two stretching assemblies can fix the two ends of the rubber pipe. According to the corrugated pipe clamping device, the limiting mechanism and the positioning mechanism are started to clamp the corrugated pipe at the same time, at the moment, under the magnetic force effect of the electromagnet, the elastic assembly is in adsorption connection with the limiting mechanism, meanwhile, the supporting assembly is in adsorption connection with the positioning mechanism, and the middle of the corrugated pipe is fixed through the supporting assembly and the positioning mechanism; and elastic assemblies and limiting mechanisms are arranged on the two sides of the positioning mechanism to elastically limit the corrugated pipe.

A pickleball racket includes a racket frame, a racket face and a handle. The handle is connected to one end of the racket frame, the racket frame is arranged around the racket face, the racket face and the racket frame enclose to form a filling cavity filled with elastic components. The pickleball racket has excellent elastic property, improves energy absorption and rebound efficiency, and improves the user's usage experience.

The invention relates to the technical field of foundation pit supporting, and discloses a large deep foundation pit inner supporting system with a safety system.The large deep foundation pit inner supporting system comprises a telescopic rod, a supporting rod, a connecting plate and a soil retaining plate, one end of the telescopic rod is rotationally connected with a connecting block through a pin, the connecting block is movably provided with an elastic assembly, and the elastic assembly is connected with one side of the supporting rod; the elastic assembly reserves an elastic telescopic space between the supporting rod and the telescopic rod and is used for detecting displacement generated when the supporting rod and the soil retaining plate support the foundation pit, clamping grooves are formed in the two opposite sides of the soil retaining plate, and an assembling structure is arranged on one side of the supporting rod. According to the large-scale deep foundation pit inner supporting system with the safety system, prestress can be effectively applied to the side wall of the foundation pit, so that the periphery of the pit wall has certain supporting force, the deformation condition of the side wall of the foundation pit can be monitored, meanwhile, underground water seepage of a soil layer of the foundation pit can be eliminated in time, and the safety coefficient during foundation pit supporting is improved.

The contactor comprises an electromagnetic assembly, a static contact and a movable assembly, the movable assembly comprises a movable contact, a first elastic part and a driving part which are connected, and the first elastic part is configured to generate elastic force supporting the movable assembly; the driving component is configured to generate electromagnetic driving force through a magnetic field generated by the electromagnetic assembly, and the controller is configured to control a movable contact and a static contact of the movable assembly to be closed and respond to the fact that the sensor detects that the driving component generates displacement based on electric repulsive force generated by current flowing through the movable contact and the static contact. And controlling the electromagnetic assembly to adjust the generated magnetic field so as to reduce electromagnetic driving force which is generated by the driving part according to the generated magnetic field and is opposite to the electric repulsive force, so that the movable contact is not closed with the static contact again. According to the contactor disclosed by the invention, fusion welding of the movable contact and the static contact in the short circuit process can be prevented, so that the contactor fault is avoided, and the equipment reliability is improved.

The chest structure of the simulation dummy for the bursting test comprises a thoracic vertebra assembly, and the thoracic vertebra assembly comprises an upper thoracic vertebra section, a thoracic vertebra elastic assembly and a lower thoracic vertebra section which are sequentially connected from top to bottom; the thoracic vertebra elastic assembly can generate elastic deformation when being vertically extruded, and the upper thoracic vertebra section or / and the lower thoracic vertebra section is / are provided with a thoracic vertebra acceleration sensor set used for collecting vertical acceleration information. The invention further discloses the simulation dummy for the bursting test, the dummy comprises the chest structure of the simulation dummy for the bursting test and further comprises a hip assembly arranged at the lower end of the chest structure, and the hip assembly comprises an abdomen structure and a lumbar vertebra assembly arranged on the rear side of the abdomen structure and connected with the lower end of the thoracic vertebra assembly. The abdomen structure is provided with a limiting step matched with the lower end structure of the thoracic vertebra assembly. The simulation dummy can serve as a real human body substitute to undertake a test task in places such as a bursting test and a protective lifesaving equipment test.

The invention provides a compound degree-of-freedom excited abnormal sound test bench. The compound degree-of-freedom excited abnormal sound test bench comprises a base, a supporting frame, an objective table, a first limiting piece, a second limiting piece and a driving mechanism, the supporting frame is provided with a first mounting part, the bottom of the objective table is provided with a second mounting part and two driving connecting parts, and one side edge of the objective table is provided with a third mounting part; the first limiting piece comprises a rod body and two first elastic parts, and the first mounting part and the second mounting part are connected with the two ends of the rod body through the first elastic parts correspondingly; the second limiting piece comprises an extension arm and a mounting seat, the mounting seat comprises a second elastic part, and the two ends of the extension arm are connected with the second elastic part and the third mounting part respectively; the driving mechanism comprises two driving end heads, and each driving end head is connected with one driving connecting part. The first limiting piece and the second limiting piece are used for supporting, limiting and guiding the objective table, composite degree-of-freedom excitation can be achieved only through z-direction exciting force, operation is convenient, and the testing effect is good.

The invention discloses a massager executive component safe crumple mechanism which comprises a base, a swing arm is rotatably mounted on the base, a massage component is arranged at the far end of the swing arm, a supporting component capable of sliding relative to the base is arranged below the swing arm, a connecting rod is hinged to the supporting component, and the other end of the connecting rod is hinged to the middle of the swing arm. A thrust mechanism is arranged on one side of the supporting component and comprises a limiting block abutting against the supporting component and a driving assembly driving the limiting block to move in the sliding direction of the supporting component, an elastic component is arranged between the base and the supporting component, and the elastic component exerts force enabling the supporting component to abut against the limiting block. When the massage part is pressed by external force, the supporting part can overcome the resistance of the elastic part to slide so that the massage part can move towards the base. The device has the beneficial effects that when the vehicle is collided, the massage component can rapidly return from the ejection state, and the device has the advantage of good safety.

The present disclosure provides a novel lacing device and an anti-reverse mechanism thereof. This lacing device uses a “swing arm elastic component-stop piece-gap” mechanism as the anti-reverse mechanism, wherein an elastic component of the swing arm elastic component has good deformation ability, and a swing arm head and an anti-reverse head of the stop piece may form self-locking force, such that the lacing device with the novel anti-reverse mechanism not only has excellent hand feeling when the lace is tensioned, but also can effectively avoid the unintentional loosening of the lace, thereby having excellent use reliability and durability.

The invention discloses a shaver featuring a shaver head with a double-layer elastic structure, which is characterized by comprising a shaver head and a main body, wherein the shaver head comprises an upper shaver head shell and a lower shaver head shell; a connecting rod is arranged on a bottom surface of the lower shaver head shell; a moving blade connector, a first moving blade and a second moving blade fixing part are arranged above the lower shaver head shell; and a first stationary blade, a second stationary blade and a second moving blade are mounted on the upper shaver head shell. The shaver of the invention can trim long hair and short hair at the same time, a first elastic part is arranged between the moving blade connector and the lower shaver head shell, and a second elastic part is arranged between the second moving blade fixing part and the moving blade connector; the shaver head adopts a single drive, four springs divided into two groups, and a balance limit structure, so as to provide stable elastic force for the first moving blade and the second moving blade, prevent the two groups of blades from interfering with each other, and guarantee force balance; consequently, the shaver achieves enhanced working stability, improved shaving effect, while minimizing the risk of skin scratches.

The invention relates to the technical field of medical apparatus and instruments, and discloses a long-acting gastric retention drug delivery device which can enter the stomach in an oral self-ingestion mode, further realizes size change through expansion of an elastic assembly, enhances the mechanical strength of the elastic assembly through a water-induced hard polymer, and avoids extrusion deformation and emptying through the pylorus of the stomach. The device comprises a medicine carrying assembly, an elastic assembly and a connecting assembly, the medicine carrying assembly comprises a plurality of medicine carrying pieces, and each medicine carrying piece is provided with a medicine carrying cavity. The elastic assembly comprises a plurality of elastic pieces, and the first ends of the elastic pieces are connected with one another, so that the elastic assembly is in a star shape in the unfolded state. The outer layer of the elastic assembly is coated with a reinforcing film, and the reinforcing film is formed by curing a water-hardened polymer and can be gradually converted into rigidity from flexibility in a water-based environment. The connecting assembly comprises a plurality of connecting pieces, the second end of one elastic piece is connected with one medicine carrying piece through one connecting piece, and the connecting pieces are decomposed under preset conditions, so that the medicine carrying pieces and the elastic assembly are separated and discharged out of the body in a non-invasive mode.

The utility model relates to the technical field of clamps, and discloses a hydraulic clamping device which comprises a base, the top of the base is fixedly connected with a fixing block, an elastic assembly is arranged in the fixing block, and a collecting assembly is arranged on the outer wall of the base. The elastic assembly comprises a circular groove, the top of the fixing block is detachably connected with a cover plate, and the bottom of the cover plate is fixedly connected with a fixing spring. The hydraulic clamping equipment is provided with a circular groove, a cover plate, a fixed spring, a circular plate, a circular hole, a circular block, a long rod and a pressing block, after a workpiece is clamped and fixed, the pressing block is pulled upwards to enable the fixed spring to contract, the pressing block is rotated to change the direction, the pressing block is loosened to enable the fixed spring to rebound, and the pressing block presses the workpiece through the elastic force of the fixed spring; and the fixing effect is enhanced, the workpiece which is not firmly clamped is prevented from suddenly loosening or flying out in the machining process, and the requirements of people are met.

The invention relates to a saw blade clamping device and a jig saw, the saw blade clamping device is used for detachably clamping a saw blade, the saw blade clamping device comprises a clamping column assembly, a mounting shell assembly, an elastic assembly and two clamping pins, and the mounting shell assembly is slidably connected to the end of the clamping column assembly. The installation shell assembly is provided with oppositely-arranged guide sliding grooves, the two ends of the elastic assembly elastically abut against the installation shell assembly and the clamping column assembly respectively, the clamping pins slide and gather along the first sliding hole, the second sliding hole and the guide sliding grooves under elastic abutting of the elastic assembly, and the minimum distance between the two clamping pins is smaller than the thickness of the saw blade. The mounting shell assembly moves in the direction of the saw blade opening under the action of elastic pre-tightening force of the elastic assembly, correspondingly, the two clamping pins move in the direction of the saw blade opening under the driving of the mounting shell assembly and get close under the driving of the first sliding hole and the second sliding hole, and therefore the two clamping pins can clamp the two sides of the saw blade, and the clamping area is large.

The utility model discloses a temperature control water nozzle service life testing machine, and relates to the technical field of temperature control water nozzle service life detection. The temperature control water nozzle service life testing machine comprises a testing stand and a constant temperature water nozzle body, a fixing frame is fixed to the rear side of the top of the testing stand, a water supply pipe is embedded in the fixing frame, a water outlet pipe is arranged on the front side of the water supply pipe, a threaded sleeve is rotationally connected to the front end of the water outlet pipe and is in threaded fit with the constant temperature water nozzle body, and a hose is connected between the water supply pipe and the water outlet pipe. A screw rod is obliquely arranged on the inner side of the fixing frame, a movable block is arranged on the screw rod in a threaded mode, an elastic assembly is connected to the bottom of the movable block, a U-shaped frame is connected to the lower end of the elastic assembly, a pressing wheel is rotationally installed on the inner side of the U-shaped frame through a rotating shaft, and the pressing wheel is matched with a hose. By combining the elastic effect of the elastic assembly, the pressing wheel extrudes the hose, the size of the drift diameter of the hose is changed, the purpose of adjusting the water flow speed is achieved, the structure is simple, and use is convenient.

A nut mounting device is used for mounting a nut to a preset position of a workpiece and comprises a base, a storage mechanism and an abutting mechanism, and the storage mechanism and the abutting mechanism are mounted on the base. One side of the base is convexly provided with an abutting part abutting against a workpiece and is provided with a penetrating opening penetrating through the abutting part; the storage mechanism comprises a storage assembly, a first stop piece and a first stop elastic piece, the first stop piece and the first stop elastic piece are connected with the storage assembly, the storage assembly is stored in the penetrating opening and extends towards the abutting part, a storage hole for storing the nut is formed in the storage assembly, and the first stop piece extends to the end, close to the abutting part, of the storage hole; the two ends of the first stop elastic piece are connected with the containing assembly and the first stop piece respectively, the abutting mechanism comprises an abutting assembly and an ejector pin connected with the abutting assembly, the abutting assembly is installed on the side, away from the abutting portion, of the base, and the ejector pin directly faces the containing hole. When the nut is installed, the abutting assembly drives the ejector pin to eject the nut out of the containing hole to the preset position of the workpiece, then installation of the nut is completed, the installation time is shortened, and the nut installation efficiency is improved.

The invention discloses a rod end pedicle screw connector and a spine stabilizing device, and the connector comprises a first maintaining part which is provided with a cylindrical cavity, a main accommodating groove and an extrusion cavity; the second retaining part is arranged in the columnar cavity and is fixed with the rod-shaped part; the main gland is screwed with the upper cavity wall of the columnar cavity; a first sub-gland for pressing the second holding member; the wrapping part is arranged in the extrusion cavity and used for clamping the ball head of the screw; a force transmission part is arranged between the wrapping part and the main gland and used for transmitting pressure applied by the main gland to the wrapping part. An elastic component is arranged in the columnar cavity and is provided with a first combining end and a second combining end, and the two combining ends are allowed to be close to or far away from each other and the first combining end is allowed to swing in any direction relative to the second combining end through elastic deformation; the first combination end is fixedly connected to the second holding part, and the second combination end is fixedly connected to the first holding part or the force transmission part.

The utility model discloses an expansion joint width gauge for bridge detection, which belongs to the technical field of bridge detection and comprises a distance sensor, a distance measuring piece, a main body, a first rotating wheel, a second rotating wheel, a driving piece, a first connecting rod and a second connecting rod. The first connecting rod and the second connecting rod are symmetrically arranged on the two sides of the cavity, the middles of the first connecting rod and the second connecting rod are rotationally connected with the through groove, the first rotating wheel is rotationally connected to the end, away from the cavity, of the first connecting rod, the driving part is fixedly connected to the end, away from the cavity, of the second connecting rod, and the second rotating wheel is fixedly connected to the output end of the driving part. According to the bridge expansion joint width gauge, the problems that an existing width gauge cannot carry out whole-line detection on a bridge expansion joint, installation is extremely inconvenient, and then the bridge detection effect is affected are solved.

The utility model relates to a robot wire harness contraction device and a robot. The robot wire harness contraction device comprises a shell, an elastic component and a wire harness. A sliding contraction block is arranged in the shell in a sliding mode, a first wire harness guide wheel is installed on the sliding contraction block, a second wire harness guide wheel is installed in the shell, the inner side face of the right side wall of the shell is connected with one end of an elastic component, and the other end of the elastic component is connected with the sliding contraction block. A first through hole is formed in the left side wall of the shell, a second through hole is formed in the right side wall of the shell, and one end of the wire harness penetrates through the first through hole, bypasses the first wire harness guide wheel and the second wire harness guide wheel along an S-shaped route and then is led out of the second through hole. The robot wire harness contraction device is small in size and compact in structure, contraction and extension of the wire harness can be achieved in the limited internal space of a robot, a complex drag chain structure is omitted, the utilization rate of the internal space of the robot is increased, and therefore the size of the robot is greatly reduced.

The utility model relates to a needle fixture, in particular to a needle positioning fixture, which comprises a base, a positioning pin and a positioning pin. The supporting frame is arranged on one side of the base; the first clamping arm comprises a first end part used for clamping the bending part, the second clamping arm comprises a second end part used for clamping the bending part, the first clamping arm and the second clamping arm are rotatably connected with the sliding block, the supporting frame is provided with a sliding groove which is matched with the sliding block and extends in the axial direction, and the sliding block is slidably connected with the sliding groove; the first end part and the second end part are oppositely arranged, and the first end part and the second end part abut against each other in the clamping area through the first elastic assembly and the second elastic assembly; after the needle is fixed, the needle fixing device further comprises a locking block which is arranged on the base in a sleeving mode and used for fixing the needle and the base. By means of the structure, needle positioning in multiple directions and angles can be achieved through the same clamp.

The invention relates to the technical field of anchor rod construction, and discloses an overturning type telescopic rod hollow grouting anchor rod which comprises a rod body, the rod body is sleeved with a plurality of sleeves evenly distributed in the length direction of the rod body, the outer walls of the sleeves are hinged to a plurality of telescopic rods distributed in the annular circumferential direction, and the telescopic rods can be overturned outwards; the outer wall of the rod body is provided with external threads, the upper end and the lower end of each sleeve are each provided with a first nut, the rod body is sleeved with the first nuts in a threaded mode, the specific positions of the sleeves are fixed through adjustment of the threads of the first nuts, and an anchor rod head is installed at one end of the rod body. The second elastic assembly drives the telescopic rod to turn over outwards and cooperates with the first elastic assembly to achieve rigid constraint, after the string is cut off, the second spring releases elastic force and drives the telescopic rod to turn over quickly, meanwhile, the connecting rod slides upwards to enable the positioning block to be clamped into the sleeve hole, reverse rotation of the telescopic rod is limited, constraint is formed, and the telescopic rod can be completely unfolded; and the problem of extension uncertainty is solved.

The invention discloses a guardrail device and a using method. The guardrail device comprises a frame structure. The first structure and the second structure are movably arranged on the frame structure; the first trundle part is arranged at the bottom of the first structure; the supporting component is arranged at the bottom of the second structure; the first elastic component acts on the first structure, and the second elastic component acts on the second structure; when the weight of the first structure is greater than a first preset weight, the first structure overcomes the elastic force of the first elastic component and moves in the direction close to the bottom of the frame structure, so that the first trundle component extends out of the bottom of the frame structure; when the weight is larger than a second preset weight, the second structure overcomes the elastic force of the second elastic component and moves in the direction close to the bottom of the frame structure, so that the supporting component extends out of the bottom of the frame structure. The foundation protection function is guaranteed through the frame structure, the state of the guardrail device is switched by increasing and decreasing the weight, the guardrail device is convenient to move while normal use is not affected, and therefore balance can be achieved between the easy-to-open moving function and the prominent anti-collision capacity.

The utility model discloses a safe crumple mechanism of a massager, which comprises a base, a swing arm rotatably mounted on the base, a massage component arranged at the far end of the swing arm, a support component arranged below the swing arm and capable of sliding relative to the base, a connecting rod hinged to the support component, the other end of the connecting rod hinged to the middle of the swing arm, and a thrust mechanism arranged on one side of the support component. The thrust mechanism comprises a limiting block abutting against the supporting component and a driving assembly driving the limiting block to move in the sliding direction of the supporting component, an elastic component is arranged between the base and the supporting component, and the elastic component exerts force enabling the supporting component to abut against the limiting block. When the massage part is pressed by external force, the supporting part can overcome the resistance of the elastic part to slide so that the massage part can move towards the base. The utility model has the beneficial effects that the massage component can quickly return from the ejection state when the vehicle is collided, and the safety is good.

The present application discloses a kind of airing device, it belongs to airing equipment technical field, including airing rack and winding structure, airing rack includes first drying rod and second drying rod, second drying rod is operable to be close to or away from first drying rod, to form first drying rod and the first drying rod between second drying rod and the second drying rod of second drying rod lower side second drying rod area;Winding structure includes elastic component and connecting belt, one end of connecting belt is connected with elastic component, one of first drying rod and second drying rod is used to support elastic component, and the other is connected with the other end of connecting belt;When second drying rod is away from first drying rod under the action of downward first external force, the force that connecting belt exerts on elastic component is greater than predetermined tension value to make elastic component elastically deformed and release connecting belt;When first external force disappears, the resilience of elastic component is less than or equal to the gravity of second drying rod to enable second drying rod to hover in the arbitrary position away from first drying rod.

The utility model discloses a sweeping assembly and a cleaning device. The cleaning device comprises a sweeping assembly, and the sweeping assembly comprises a mounting support, a roller component, a scraper blade, an elastic component and a limiting component. Wherein the mounting bracket is provided with a mounting space. The roller component comprises a roller main body and a roller mop, the roller main body is rotatably connected in the mounting space, and the roller mop is arranged on the periphery of the roller main body. The first end of the scraper is movably connected to the mounting support, and the second end, opposite to the first end, of the scraper abuts against the roller mop. The elastic component is arranged between the mounting bracket and the scraper blade and applies elastic force to the scraper blade, so that the second end of the scraper blade has a trend of moving towards the roller mop. And the limiting part is arranged between the mounting bracket and the scraper and is used for limiting the maximum displacement of the scraper moving towards the roller mop. According to the sweeping assembly and the cleaning device, the problem that a roller is stuck in the prior art is solved.

The invention relates to the field of pipeline robots, and particularly discloses a pipeline robot and a control method thereof.The pipeline robot comprises a first section body, a second section body, a third section body and a fourth section body which are sequentially hinged, the hinged axes of all the hinged positions are parallel to one another, and the first section body, the second section body, the third section body and the fourth section body are connected into an M shape; the multiple sets of wheel set mechanisms are arranged, and the multiple sets of wheel set mechanisms are arranged at the hinged positions correspondingly and used for driving the first section body, the second section body, the third section body and the fourth section body to advance along the axis of the pipeline; one elastic assembly is arranged between the first section body and the second section body in a tensioning mode, and the other elastic assembly is arranged between the third section body and the fourth section body in a tensioning mode; one driven wheel set is arranged at the end, away from the second section body, of the first section body, and the other driven wheel set is arranged at the end, away from the third section body, of the fourth section body. The pipeline robot has the effect that the pipeline robot needs to adapt to different pipe diameters.

The invention provides a leg-foot device of a biped robot, and relates to the technical field of robots. The invention provides a leg-foot device of a biped robot. The leg-foot device comprises a hip connecting plate, the hip joint driving module is fixed on the hip connecting plate; the foot module can move relative to the hip connecting plate under the driving of the hip joint driving module; the leg module comprises at least two sets of leg connecting rod mechanisms, and each leg connecting rod mechanism comprises a thigh frame, a knee joint, a shank frame and an energy storage and release elastic assembly. The buffering capacity of the leg and foot device is improved through the energy storage and release elastic assembly, energy is stored when the leg and foot device is in the squatting posture, and the leg and foot device exerts force to the ground under the combined action of the energy storage and release elastic assembly and the hip joint driving module when doing explosive movement, so that larger pushing force is provided for explosive movement, and the driving effect of the leg and foot device is improved. Therefore, the explosion capacity is improved.

The utility model provides a pedal feeling simulation assembly, a vehicle braking system and a vehicle. The assembly comprises a brake master cylinder, a pedal feeling simulator, a pipeline assembly and a simulator control device. The brake master cylinder is connected with a brake pedal; the pedal feeling simulator comprises a shell, at least two pistons and at least two elastic parts, the shell comprises at least two cavities, one piston and one elastic part are correspondingly arranged in each cavity, the elastic coefficients of the elastic parts arranged in the different cavities are different, the pistons can reciprocate in the cavities in the preset direction, and the pistons are arranged in the cavities in the preset direction. The elastic component is connected between the inner wall of the cavity and the piston and is used for providing damping force pointing to the piston when the correspondingly connected piston extrudes the elastic component; the simulator control device is connected between the brake master cylinder and the pedal feeling simulator through a pipeline assembly and used for selectively communicating the brake master cylinder with the target cavity so that the brake master cylinder can respond to driving of the brake pedal to convey brake fluid into the target cavity.

The present invention discloses a normally closed three-way solenoid valve, comprising a valve seat, a valve cavity is arranged in the valve seat, a first channel is arranged at the bottom end of the valve cavity, and a second channel and a third channel are arranged at the side of the valve cavity; a valve core assembly comprises a valve body, a first valve core, a second valve core and a first elastic component, the valve body is provided with a flow guiding cavity, a first through hole and a second through hole, and a flow guiding interval is formed between the outer wall of the first valve core and the inner wall of the flow guiding cavity; a flow guiding channel which is connected with the first channel is arranged inside the second valve core; the first elastic component is connected between the first valve core and the second valve core; a magnet assembly comprises a fixed iron, a coil assembly, a moving iron and a second elastic component, the top end of the moving iron is connected with the fixed iron through the second elastic component; and the bottom end of the moving iron is in contact with the first valve core. The present invention avoids spring rebound by arranging the second elastic component between the moving iron and the fixed iron, and can ensure the reliable and accurate operation of the solenoid valve.

The utility model discloses an HEPA rotary floating sealing ring structure of a dust collector, which comprises an HEPA support, a sealing ring and a sealing ring, the HEPA support comprises an upper HEPA support and a lower HEPA support, the upper HEPA support is rotatably connected onto the lower HEPA support, and at least one first mounting groove is arranged on each of two sides of the lower HEPA support; the elastic component is mounted in the first mounting groove, and the top of the elastic component is connected with the upper HEPA bracket; the sealing rings are connected to the upper HEPA support and the lower HEPA support in a sealing mode, and the sealing rings are elastic sealing rings. Compared with the prior art, the dust cup can solve the problem that the use experience of a user is affected by deformation and failure of the sealing ring due to the fact that the sealing ring is flanged when the dust cup is taken out or put in a large vertical dust collector.