77 results about "Labyrinth structure" patented technology

The utility model belongs to the technical field of explosion-proof pressure release valves, and relates to an explosion-proof pressure release valve with a sediment-proof structure, which comprises a valve cover, a stainless iron sheet, a pressing ring, a breathable film, a pressing sheet, an inner O-shaped ring, a valve body, an outer sealing ring, a spring and a guide post, the valve cover is designed to be of the flanging structure, the ventilation channel is formed in the side face of the anti-explosion valve, and silt and mud cannot be injected into the anti-explosion valve from the front face; a ventilation gap between the valve cover and the valve body is designed to be smaller than the particle size of silt and mud particles, and silt and mud are blocked outside the anti-explosion valve; according to the explosion-proof valve, the valve cover turnup is adopted, the retaining wall is arranged between the valve cover and the valve body, the retaining wall is higher than the gap of the ventilation channel and forms a labyrinth structure, when water is injected into the explosion-proof valve, the water is blocked by the retaining wall and cannot be directly injected into the explosion-proof valve, the effect of IPX9K is achieved, the ventilation film is protected against damage, and the sealing integrity of the explosion-proof valve during high-pressure water injection is guaranteed; and the upper groove of the valve body is trapezoidal to prevent the inner O-shaped ring from being separated, so that the problem that the O-shaped ring pops up when an existing anti-explosion valve works is solved.

The embodiment of the present application provides a fan, which comprises: a cylindrical part configured to be able to rotate with a rotating axis as the center; an impeller part configured at the radial outer side of the cylindrical part; a magnet provided to the inner wall of the cylindrical part; a stator at least partially accommodated in the cylindrical part; a tower part supporting the stator; a wall part configured at the radial outer side of the tower part, at least part of the wall part and the cylindrical part coincide and form a labyrinth structure in the radial direction, the cylindrical part comprises at least one annular cylinder wall, the wall part comprises at least two annular walls configured concentrically, or the cylindrical part comprises at least two annular cylinder walls configured concentrically, and the wall part comprises at least one annular wall. Through the embodiment of the present application, foreign matters can be effectively prevented from entering the inside of the fan.

This pump comprises a casing and an impeller that comprises a first shroud (720) that covers vane parts (710). The casing has a groove part (312) into which the tip (722a) of a suction port mouth part (722) of the first shroud (720) is inserted and an inside wall part (313) that is further toward the inner circumferential side than the groove part (312). A return passage (360) that has a labyrinth structure (361) that is formed by the suction port mouth part (722) and the groove part (312) on the inner circumferential side is formed between the casing and the first shroud (720). The first shroud (720) has an extending part (726) that has an opposing surface (726a) that is opposite an end surface (313a) of the inside wall part (313) that is on the vane part (710) side in the axial direction.

The utility model discloses a waterproof bus installation structure in the bus waterproof field, which comprises a cabinet body assembly and a cabinet side plate, the cabinet side plate is provided with a first installation groove, and the first installation groove is internally provided with a first rectangular boss and a second rectangular boss; the fixing assembly comprises a bus frame embedded in the first mounting groove, a first rectangular groove and a second rectangular groove are formed in the two sides of the bus frame, a mounting table is arranged in the middle of the bus frame, a branching clamp is fixed in the mounting table, and a bus copper bar is connected to the branching clamp. The beneficial effects of the utility model are that the gaps generated after the cabinet body assembly and the fixing assembly are connected form the labyrinth structure, the labyrinth structure with the continuously changing gaps can block infiltrated water, and meanwhile, in order to prevent a large amount of water vapor from being gathered and overflowing from the labyrinth structure, the gathered water can be completely discharged out of the bus frame through the drainage pipeline, so that the service life of the bus frame is prolonged. And the waterproof performance is further improved.

This utility model discloses an X-ray shielding room with a labyrinth structure, relating to the field of X-ray shielding room technology. It includes a ventilation component, comprising a shielding room body with lead plates installed on the inner wall of the body. The size of the lead plates is adapted to the shielding room body. A toothed plate is installed on the top of the shielding room body. This utility model allows for ventilation and heat dissipation when not in use by setting up the ventilation component. The position of the sealing plate can be adjusted by rotating the moving gears, controlling the opening and closing of the ventilation openings. When not in use, the ventilation openings can be controlled to open, thus facilitating heat dissipation and ventilation. This prevents the concentration of harmful gases inside the shielding room body from continuously increasing due to lack of ventilation, which could cause symptoms such as coughing, chest tightness, and sore throat, thus protecting the health of users. Two sets of guide rods can restrict the movement trajectory of the sealing plate, preventing deviation or tilting during movement.

The invention discloses a split type protective cover which comprises at least two half cover bodies capable of being combined in a split mode. The bottom of each half cover body is provided with a partition plate extending along the contour of the cover body, and the partition plates are in lap joint with one another to form a labyrinth structure. The labyrinth structure is used for preventing external impurities from invading and allowing internal liquid to be discharged along a preset path; the top of each half cover body is provided with a locking assembly used for rapid locking and fixing so that rapid assembling and disassembling of the half cover bodies can be achieved. According to the invention, the protective cover is optimized to be of a left-right split structure, a top rapid locking and fixing mode is adopted, and meanwhile, the partition plates on the two sides extend and are in lap joint to form a labyrinth structure, so that the disassembly and assembly operation time of the protective cover can be greatly shortened, and installation can be completed only by aligning and attaching the half covers on the two sides, covering the fixing plates with holes and tightening the nuts; during disassembly, the half covers can be separated only by loosening the nuts and taking down the fixing plates, the cover body does not need to be moved integrally, and quick disassembly and quick assembly are achieved.

The utility model discloses a turnover type top cover for an open-top box body, which is of a split opening and closing structure along the longitudinal axis of the open-top box body, is hinged with a side wall, and is positioned on the side wall after being turned over and opened; wherein when the upper cover and the lower cover which are oppositely opened are closed, the bottom surfaces of the upper cover and the lower cover are positioned at the joint part of the central axis of the open top box body and are provided with mutually matched rainproof sealants with labyrinth structures, and the lower cover is tightly pressed by the upper cover through gravity to realize sealing; the other three peripheries of the bottom surfaces of the upper cover and the lower cover are provided with grooves of labyrinth structures, and rainproof sealants are embedded into the grooves to be combined with the top of the open-top box body to achieve sealing. The top cover adopts a split structure, is connected with the side wall through the turnover seat, and is fixed on the side wall after being turned over, so that the ground space is not occupied; the top cover rotates around the shaft to ensure accurate alignment in the opening and closing process; rubber strips are arranged on the periphery of the bottom of the top cover and deform when making contact with a top beam rainproof plate, rainproof sealing is achieved, the left-right overturning type top cover is divided into an upper cover body and a lower cover body, the upper cover body presses the lower cover body through gravity, and a labyrinth structure is arranged for rainproof sealing.

The utility model relates to the technical field of sealing cover design, and discloses a novel anti-leakage sealing cover which comprises a sealing connecting plate, an outer sealing plate and an externally-expanded lip edge, the outer sealing plate is arranged on the outer side of the sealing connecting plate, and the externally-expanded lip edge which wraps a clamping sleeve at the top of a steering connecting end and extends downwards is arranged on the edge of the outer side of the bottom of the outer sealing plate. The steering structure is of an irregular labyrinth structure, rubber properties are combined with the appearance characteristics of the steering structure, all-directional protection can be achieved on the steering bearing and the steering assembly, lubricating oil on the steering bearing is prevented from seeping out, and pollutants outside the mounting end of the steering bearing are also prevented from entering the steering bearing; the sealing cover is in embedded connection with the top clamping sleeve of the steering connecting end through the first connecting clamping groove, sealing protection of the steering connecting end is effectively achieved through cooperation of the sealing cover and the outer lip edge, the first lip edge and the second lip edge are in sealed connection with the steering connecting end, and pollutants in the environment are prevented from entering the steering bearing.

The application discloses an oil-cooled driving motor with a multistage zigzag labyrinth ventilation structure, comprising a shell, a motor cavity and an end cover, wherein the shell is provided with a first cavity and a second cavity, small passages are left below the first cavity and the second cavity, the first cavity and the second cavity are combined into a multistage labyrinth structure, and an oil-proof ventilation valve is arranged at the axial end of the second cavity. The multistage labyrinth structure formed by the first cavity and the second cavity is cooperatively designed with the end cover. The application can realize multistage separation and efficient interception of oil-gas mixture, completely block oil droplets from entering the oil-proof ventilation valve, prevent oil leakage caused by the plugging of the oil-proof ventilation valve, ensure the smooth backflow of separated cooling oil to the motor cavity, reduce oil consumption, and is compact in structure, easy to process and assemble, suitable for the layout of various oil-cooled motor end covers, and suitable for popularization and use.

A labyrinth structure 1 of an intake duct 2 includes an upper support member 6 extending rearward of the intake duct 2 and an upper mount bracket 5 extending downward of the intake duct 2. The labyrinth structure 1 also includes a pair of air guide plates 11 disposed outside the intake duct 2 and a cover member 10 covering the intake duct 2 and the upper support member 6. An intake port 2B of the intake duct 2 is opened toward a first air guide plate 11R, and an air gap is formed between the intake port 2B and the first air guide plate 11R. From the first air guide plate 11R, a projecting wall 11A projects toward an end portion 2A of the intake duct 2 where the intake port 2B is formed. A projecting end of the projecting wall 11A overlaps with the end portion 2A as viewed from the front, and an upper portion of the projecting wall 11A overlaps with a lower surface of the cover member 10 as viewed from the front.

The utility model discloses an ultra-low torque oil slinger combined type sealing structure which comprises a sealing ring framework and an oil slinger framework, the sealing ring framework is provided with a first rubber body, the oil slinger framework is provided with a second rubber body, the first rubber body is sequentially provided with a water retaining brim, a labyrinth retaining brim, a labyrinth lip, a muddy water lip and a non-contact grease lip, and the second rubber body is sequentially provided with a water retaining brim, a labyrinth retaining brim, a labyrinth lip, a muddy water lip and a non-contact grease lip. The oil slinger framework is further provided with a processing layer making contact with a lip opening of a muddy water lip. The second rubber body is provided with a static sealing lip and an oil slinger disengagement preventing point, and a labyrinth type structure is formed among the static sealing lip, the labyrinth blocking eave and the labyrinth lip.

The utility model provides a deposition ring, a process assembly and a process chamber. The deposition ring comprises a deposition groove, wherein the deposition groove comprises a first convex ring part located on the inner side, a second convex ring part located on the outer side and a bottom wall between the first convex ring part and the second convex ring part; the bearing part is located on the outer side of the deposition groove, the top of the bearing part is provided with an abutting face, the plane where the abutting face is located is lower than the top of the second convex ring part, and an annular groove is formed in the abutting face. The deposition ring in the embodiment of the utility model is used for being matched with a shielding ring in a process chamber, as shown in the figure, when the deposition ring is matched with the shielding ring, the abutting surface abuts against the shielding ring, and the annular groove is formed in the abutting surface, so that a labyrinth structure can be formed between the abutting surface and the deposition ring; the target material particles are not prone to entering the abutting position of the abutting face and the deposition ring, and therefore the probability that the shielding ring adheres to the deposition ring is reduced.

The invention provides a laser radar which comprises a stator and a rotor, the stator comprises a stator bottom shell and a stator side wall, the stator bottom shell is provided with a liquid cooling pipeline, and the liquid cooling pipeline surrounds the inner wall of the stator side wall and penetrates out of the outer wall of the stator side wall to be connected with an external cooling device; the rotor is fixed to the stator and comprises a first circuit board, a rotor bottom shell and a rotor side wall, the first circuit board is fixed to the rotor bottom shell and provided with a plurality of first components, and a first heat conduction layer is arranged on the face, facing the rotor bottom shell, of each first component; wherein the rotor bottom shell is provided with a first labyrinth piece, the stator bottom shell is provided with a second labyrinth piece, the first labyrinth piece and the second labyrinth piece are matched to form a labyrinth structure, and the labyrinth structure is provided with a heat conduction cavity; the plurality of first components generate first heat when the laser radar works, and the first heat is conducted to the rotor bottom shell through the first heat conduction layer to be conducted to the labyrinth structure so as to be conducted to the stator bottom shell through the heat conduction grease to be conducted to the liquid cooling pipeline.

The invention relates to a cover for a cutting or grinding disc with a circumferential wall which extends at least sectionally parallel to a circumference of the cutting or grinding disc and at least along a part of a circumference of the cutting or grinding disc, wherein at least one opening for the inlet of particles that have been detached from or by means of the cutting or grinding disc is provided in the circumferential wall, and wherein a labyrinth structure adjoins the opening, so that particles passing through the opening repeatedly hit boundary walls of the labyrinth structure and bounce off again.

The utility model provides a universal speed reducer ventilation labyrinth structure which comprises a box body, a labyrinth structure is arranged inside the box body, a scavenging air valve is arranged outside the box body, and the scavenging air valve and the labyrinth structure are communicated through a ventilation groove formed in the box body. The first shell is connected into the box body, the peripheral side of the first shell is arc-shaped, and the bottom of the first shell is conical and is provided with a first communicating groove; the second shell is in an inverted cone shape, the two ends of the second shell are connected with the inner circumferential side of the first shell, a second communicating groove is formed in the second shell, and the second shell divides the first shell into a first cavity and a second cavity. The third shell is in an inverted cone shape, the two ends of the third shell are connected with the box body and arranged in the second cavity, a third cavity is formed, and the bottom of the third shell is in an arc shape and provided with a third communication groove. The fourth shell is in an inverted cone shape, the two ends of the fourth shell are arranged on the two sides of the vent groove respectively and arranged in the third cavity to form a fourth cavity, and a fourth communication groove is formed in the fourth shell. And the ventilation labyrinth structure with strong anti-interference is successfully constructed.

The utility model discloses a spiral shaft sealing device of a vacuum dryer. The spiral shaft sealing device comprises a dryer shell, a spiral shaft and a sealing device body. The sealing device comprises a mounting seat, the top surface of the mounting seat is connected with a sealing top through a flange, the sealing top is a convex hollow cylinder, the hollow part of the sealing top is the inner diameter of the through pipe, the outer ring of the bottom end of the sealing top is of a flange design, and a sealing groove is formed in the middle of the bottom surface of the sealing top and is of a concave-convex labyrinth structure; a sealing shaft sleeve is arranged in the sealing groove in a matched mode. The outer contour of the top end of the sealing shaft sleeve is accurately matched with the sealing groove, the inner diameter of the sealing shaft sleeve is consistent with the radius of the inner diameter of the through pipe, a limiting concave ring is arranged at the bottom end of the sealing shaft sleeve along the inner diameter, and a concave ring protrusion is arranged on the limiting concave ring; according to the device, the vacuum retentivity is improved, the sealing reliability is enhanced, and leakage and abrasion are reduced.

The fire detector comprises a mounting base, a heating assembly, a detection assembly, a labyrinth assembly and a bottom shell, a plurality of smoke inlets are formed in the bottom shell, the labyrinth assembly is mounted on the bottom shell and is opposite to the smoke inlets, a labyrinth structure is formed in the labyrinth assembly, and the heating assembly is mounted on the bottom shell. The bottom shell is installed on the lower side of the installation base, the detection assembly is installed in the installation base and located above the labyrinth assembly, and the heating assemblies are installed in the installation base and arranged above the detection assembly at intervals; the heating assembly is configured to enable the internal temperature of the fire detector to be higher than the external environment temperature through heat conduction after heating. The internal temperature of the detector is higher than the external environment temperature through heating of the heating assembly, so that moisture and mist existing in the labyrinth structure are removed, the smoke detection accuracy is improved, and stable work of the fire detector is guaranteed.

This invention discloses a labyrinth-type scrap steel baler structure and its manufacturing method, relating to the fields of scrap steel balers and scrap steel smelting technology. The labyrinth-type scrap steel baler structure includes a perforated scrap steel baler with through holes. The perforated scrap steel baler contains a closed cavity for filling fuel. The through holes and the closed cavity are connected by a labyrinth structure, which allows molten steel from the through holes to flow into the closed cavity during the steelmaking process. This labyrinth-type scrap steel baler structure and manufacturing method, based on a perforated and closed-cavity scrap steel baler, adds a labyrinth structure between the holes and the closed cavity, which can accelerate and control the time it takes for molten steel to enter the closed cavity, thereby improving the smelting efficiency of the perforated scrap steel baler in scrap steel smelting.

The invention discloses a multi-layer labyrinth type elastic wave particle damping metamaterial vibration isolation device which comprises a protective shell, a self-lubricating plate, a vibration bearing limiting device and an internal vibration reduction device. The protective shell comprises an upper cover plate, an outer frame and a lower cover plate; the self-lubricating plate is fixed on the lower cover plate through a bolt; the four vibration bearing limiting protection devices are arranged on the four faces of the outer frame and comprise vibration bearing plates, double-end studs, self-lubricating shaft sleeves, vibration transmission compression springs and vibration transmission limiting plates. The internal damping device is arranged in the protective shell, the periphery of the internal damping device is attached to the vibration transmission limiting device, the upper surface of the internal damping device makes contact with the upper cover plate, the lower surface of the internal damping device makes contact with the self-lubricating plate, and the internal damping device comprises a vibration uniformizing plate, a pushing block, a limiting shell, a self-lubricating baffle and a periodic labyrinth set. The periodic labyrinth group comprises a labyrinth block, a spherical particle damper and a covering block; the labyrinth blocks are in six different forms, are stacked into a unit according to a fixed sequence and are periodically arranged in the limiting shell, at least two layers of spherical particle dampers are arranged, and the labyrinth structure is tightly filled with the spherical particle dampers and the covering blocks.

The application discloses a waterproof and breathable valve for a speed reducer, which comprises a valve body, a dustproof cover, a waterproof and breathable film and a sealing ring, the dustproof cover is connected with one end of the valve body, the sealing ring is sleeved on the other end of the valve body, the waterproof and breathable film is located between the valve body and the dustproof cover, and the waterproof and breathable valve further comprises: a flow limiting component installed in the valve body and used for slowing down the rising of oil gas, a labyrinth structure is arranged in the flow limiting component; an oil absorption assembly installed in the valve body and used for absorbing oil, the oil absorption assembly is located between the waterproof and breathable film and the flow limiting component; the oil absorption assembly comprises a positioning ring and one or more supporting rings connected with the positioning ring, and one piece of oil absorption cotton is arranged between the positioning ring and the supporting ring and between two adjacent supporting rings; and the waterproof and breathable valve has the advantages of simple structure, convenient assembly and reduced use cost.

The invention provides a labyrinth disc assembly and a high pressure difference control valve, the labyrinth disc assembly comprises a plurality of labyrinth discs stacked along the same axis, the labyrinth discs are annular pieces, embedded discs are coaxially arranged among the plurality of labyrinth discs, supporting pieces are arranged between the embedded discs and the labyrinth discs, and the supporting pieces are connected with the labyrinth discs. A first-stage flow channel is formed between the adjacent labyrinth discs through the supporting piece, and the first-stage flow channel is an annular flow channel which detours in the axial direction and is communicated with the radial inner side and the radial outer side of the middle disc by 360 degrees in the circumferential direction; a second-stage flow channel is formed between the embedded disc and the adjacent labyrinth disc, and the second-stage flow channel is an annular flow channel which detours in the axial direction and is communicated with the radial inner side and the radial outer side of the embedded disc by 360 degrees in the circumferential direction. The labyrinth type high-pressure valve can solve the technical problem that the effective flow area of a labyrinth structure of an existing labyrinth type high-pressure valve is small.

The utility model belongs to the technical field of speed reducers, and particularly discloses a speed reducer ventilation labyrinth structure capable of balancing liquid level height, which comprises a first-layer labyrinth, a second-layer labyrinth, a third-layer labyrinth, a fourth-layer labyrinth and a fifth-layer labyrinth, and an exhaust inlet A is arranged between the third-layer labyrinth and the second-layer labyrinth; an exhaust inlet B is formed in the fourth-layer labyrinth in the impact direction away from the lubricating oil; a third conduction groove is formed in a partition beam shared by the fifth layer of labyrinth and the fourth layer of labyrinth; a lubricating oil outlet C is formed in the fifth layer of labyrinth in the impact direction away from the lubricating oil; the height of the exhaust inlet B is larger than that of the lubricating oil outlet C, and the height of the lubricating oil outlet C is larger than that of the third conduction groove. Even if the speed reducer has higher rotating speed or more lubricating oil amount, the exhaust path is always unblocked, the sealing element failure caused by air pressure rise in the box is avoided, and the ventilation plug has no oil injection risk.

The invention belongs to the technical field of aviation lubricating oil systems, and discloses a labyrinth structure oil filler cap with oil-gas separation capacity, which comprises a blocking assembly and a body assembly, the blocking assembly is a structure integrating a blocking structure, a filler structure and a labyrinth structure, and the body assembly is a structure connected with a connector of an oil tank through an external thread. The body assembly is provided with an inner hole communicated with the interior of an oil tank. The blocking assembly is arranged in the inner hole of the body assembly through external threads on the lower portion. The structure of the blocking assembly specifically comprises that a ventilation assembly is arranged on the top, a labyrinth structure assembly is arranged below the ventilation assembly, the labyrinth structure assembly is formed by vertically stacking an upper labyrinth structure, filler and a lower labyrinth structure, an oil gas conveying channel is arranged below the labyrinth structure assembly, and the lower portion of the oil gas conveying channel is communicated with an inner hole of the body assembly. The oil filler cap has good oil-gas separation capacity, can stabilize the pressure of an oil tank and is convenient to maintain.

The utility model relates to a kind of quick ready-to-use gel reagent kits applied to gel preparation field, including two glass plates, and the left and right ends of glass plate are inserted with mounting strip, two mounting strips opposite to each other mutually adhere, and the upper end of front mounting strip is carved with slot, slot is equipped with insertion strip, insertion strip is fixedly connected with rear mounting strip, the upper end of rear mounting strip is carved with two limit slots, limit slot is equipped with limit strip, limit strip is fixedly connected with the mounting strip of front, and the upper end of two glass plates is inserted with tooth comb, using the above structure, by the cooperation of insertion strip and slot and limit slot and limit strip, the labyrinth structure is formed between two mounting strips, so that gel is physically cut off, effectively reduce leakage rate, and the mounting strip is extruded and limited by spring self-adapting adjustment to pressing plate, not only simple operation, but also effectively improve the anti-leakage effect, so as to reach the function of quick ready-to-use.

The invention discloses a three-stage filtering type fan bearing sand and dust sealing structure, and relates to the technical field of bearing sealing. The device comprises a bearing, the inner ring and the outer ring of the bearing are provided with an inner barrel and an outer barrel respectively, a sealed cavity is formed between the inner barrel and the outer barrel, and the sealed cavity is sequentially provided with an air curtain back-blowing structure, an air curtain back-blowing structure, a back-blowing structure and a dust removal structure in the direction of the bearing, the air curtain blowback structure, the centrifugal blocking maze structure and the contact type blocking structure are sequentially arranged in the sealed cavity, active defense is achieved through air curtain blowback, then passive defense is conducted through centrifugal blocking in cooperation with the maze, efficient non-contact type filtering is conducted in the first two stages, most dust loads are borne, and the air curtain blowback structure, the centrifugal blocking maze structure and the contact type blocking structure are arranged in the sealed cavity. The third-stage contact type sealing structure which is most prone to abrasion is prevented from being in direct contact with a large amount of abrasive particle dust, so that the abrasion rate of the third-stage contact type sealing structure is greatly reduced, the service life of the third-stage contact type sealing structure is prolonged by times, and the three-stage sealing structure is coordinated and matched.

This utility model discloses an oil sealing structure for a high-speed rotating component under negative pressure, relating to the field of mechanical transmission technology. It includes a high-speed labyrinth disk fixedly mounted on a high-speed shaft. A bearing cap is fitted around the outer periphery of the labyrinth disk, and a labyrinth structure is provided at the contact point between the bearing cap and the labyrinth disk. Both the bearing cap and the labyrinth disk are located outside the bearing. An airtight cover is fitted onto the high-speed shaft, located outside the labyrinth disk, to enclose it. The inner surface of the airtight cover in contact with the high-speed shaft has a radially recessed annular groove, forming an airtight cavity between the groove and the shaft. The airtight cover has a sealing gas inlet communicating with the airtight cavity. This utility model effectively prevents lubricating oil leakage, ensures the cleanliness of the working medium, eliminates wear, requires no maintenance, and offers superior economic and environmental benefits.

The application discloses a labyrinth-shaped special-shaped stack and a centrifugal gas-liquid separator. The labyrinth-shaped special-shaped stack comprises a plurality of special-shaped disc groups stacked, each special-shaped disc group comprising a first disc body and a second disc body, the first disc body and the second disc body being in a hollow circular truncated cone structure, and the upper and lower ends of the first disc body and the second disc body being provided with openings in communication with each other, the first disc body being used for sleevedly matched at the rear of the second disc body, a labyrinth structure for the flow of a gas-liquid mixture being formed between the first disc body and the second disc body, and corresponding flow-through portions being arranged in the upper end openings of the first disc body and the second disc body, the flow-through portion comprising a first shaft hole and a plurality of first gas passage channels distributed around the first shaft hole. The labyrinth-shaped special-shaped stack and the centrifugal gas-liquid separator are used for promoting the residence time of the gas-liquid mixture, and meanwhile, the separation effect is improved.

This invention belongs to the field of tire manufacturing technology and discloses an optimized sealing center mechanism and tire vulcanizing equipment. The center mechanism includes a bladder assembly, a rotating tube, and a sealing assembly. The bladder assembly includes a ring seat cylinder and a vulcanizing bladder, with the vulcanizing bladder disposed within the ring seat cylinder and its interior serving as a heating chamber. The rotating tube is rotatably disposed within the ring seat cylinder, and a bearing is provided between the rotating tube and the ring seat cylinder. The sealing assembly includes a first sealing element, comprising a first sealing ring and a second sealing ring. The first and second sealing rings are fitted with a clearance to form a labyrinth structure between them, connecting the spaces on both sides of the first sealing element along the axial direction. The bearing is located below the labyrinth structure. This center mechanism prevents the first sealing element from gripping the rotating tube, allowing the motor to operate with normal current, ensuring the motor's service life, and also prevents excessive wear of the first sealing element, thus preventing damage to the first sealing element.

The utility model relates to an aerosol sensor which comprises a shell, the shell comprises a bottom box and an upper cover which are connected with each other, and an optical path of a labyrinth structure is formed in a cavity of the bottom box; the circuit board assembly is arranged in the shell, the circuit board assembly comprises a circuit board, one surface, facing the bottom box, of the circuit board is connected with a light emitter and a light receiver which are used for detecting aerosol concentration, and an emitting head of the light emitter and a receiving head of the light receiver are respectively arranged at two ends of the optical path; the circuit board is also connected with a VOC sensor, and the VOC sensor is used for gas detection; and the supporting piece is used for placing the circuit board assembly. According to the utility model, the versatility of the aerosol sensor is increased, the accuracy of detecting the thermal runaway state of the battery pack can be improved, and the aerosol sensor is suitable for wider application scenes.

To provide an electric wire protector capable of further improving waterproof performance.SOLUTION: The wire protector 1 includes a grommet main body 10 that is formed from a hard resin having electrical insulation properties and through which the wire W can be inserted, and an annular water blocking member 30 that is attached to the grommet main body 10. Here, the grommet main body 10 includes the plurality of split bodies 40 that are assembled in a state in which the joining surfaces 40b facing each other in the circumferential direction abut against each other. The water stop member 30 is assembled to the grommet main body 10 so as to press the joint surfaces 40b abutting against each other. Further, the water intrusion suppressing portions 47 for suppressing the intrusion of water into the grommet body 10 are formed on the joint surfaces 40b to be butted against each other. The water-penetration reduction portion 47 has a labyrinth structure including the recess 472 and the protrusion 471 that engage with each other.SELECTED DRAWING: Figure 10