87 results about "Rotational stability" patented technology

The invention provides an impeller high-temperature over-rotation test device. The impeller high-temperature over-rotation test device comprises a long shaft, an impeller, a press-fitting assembly, a buffer assembly and a fixing piece. The long shaft comprises a first shaft body and a second shaft body which are concentric and different in diameter, the impeller is sleeved on the first shaft body, and press-fitting parts are formed at two ends. The first press-fitting assembly and the second press-fitting assembly are pressed on the press-fitting parts on the two sides of the impeller correspondingly, relative rotation is prevented through the rectangular keys, the double press-fitting assemblies are symmetrically arranged to balance axial force, and rotation stability is improved. The left / right clamping sleeve is matched with the conical surface of the left / right taper sleeve, and a tensioning wire groove is formed to adapt to impellers of different sizes and compensate size changes. The buffering assemblies are arranged in a mirror symmetry mode, the horn mouth design optimizes stress distribution, long-axis thermal expansion is absorbed, and vibration impact is resisted. The fixing piece provides axial fixing force, and the axial rigidity of the system is optimized. The device can ensure the reliable positioning of the impeller at high temperature and ultrahigh speed, and improves the test precision and reliability.

The utility model discloses an electric bolt fastening device for a limited space. The device is mainly composed of a device shell, a rotating wheel, a transmission disc and an electric wrench. The electric wrench is connected with the rotating wheel through a unique worm and worm wheel transmission system, axial power is converted into circumferential rotating power, 90-degree steering transmission is achieved, and the electric wrench is suitable for operation scenes which are narrow in space and inconvenient to operate. The device shell and the rotating wheel adopt a limiting structure of a clamping ring groove and an annular clamping rail, so that the rotating stability is ensured; the driving disc is installed at the bottom of the rotating wheel through a magnetic attraction structure, and driving discs with bayonets of different specifications can be rapidly replaced to adapt to various bolt sizes. In actual use, only an electric wrench needs to be connected with the device in an inserted mode, the corresponding transmission disc is selected, and bolt fastening operation can be efficiently completed in the limited space. The device is compact in structure and convenient to operate, the operation efficiency and safety are remarkably improved, and the technical blank in the field of bolt electric fastening in the limited space is filled.

The utility model relates to a connecting device of a perforator, in particular to a crossover coupling assembly of an oil and gas well perforating device, which is used for solving the technical problems of insufficient stability, sealing performance and centering performance of the crossover coupling assembly of the existing oil and gas well perforating device. The adapter assembly of the oil and gas well perforating device comprises the middle connector, the middle core passing piece and the switch pressing cap, the electric through function is achieved through the middle core passing piece, the sealing performance under the high-pressure environment is ensured through a sealing ring groove in the middle connector, and rotation stability is provided through a bearing in a bearing ring groove; according to the utility model, the electrical transmission performance and the overall reliability of the oil-gas well perforating device are effectively improved, and the stable operation of the system under complex working conditions is ensured.

The invention relates to a developing box which is detachably mounted in imaging equipment provided with a driving force output part, and the developing box comprises a developing shell, a developing roller, a powder feeding roller, a driving force receiving part, a first transmission part, a second transmission part and a third transmission part, the driving force receiving part is used for receiving the driving force output by the driving force output part, and the first transmission part is driven by the driving force receiving part; a second transfer section mounted at a longitudinal end of the developing roller; the third transmission part is mounted at the longitudinal tail end of the powder feeding roller; a first intermediate transmission part, both the third transmission part and the first intermediate transmission part receive the driving force from the first transmission part, and the second transmission part receives the driving force from the first transmission part through the first intermediate transmission part; the first middle transmission part and the third transmission part are arranged to rotate relative to each other; the scheme can improve the rotation stability of the developing roller.

This invention discloses a connection structure for a statorless disc generator coil, including a coil flange located at the center of the coil and a speed increaser flange located at the output end of the speed increaser. At least two sector-shaped bosses are evenly distributed around the center of the speed increaser flange on the end face of the speed increaser flange. Sector-shaped grooves matching the shape, position, number, and size of the sector-shaped bosses are provided on the mating end face of the coil flange. All sector-shaped bosses are embedded in the sector-shaped grooves to form radial and tangential constraints. At least two anti-shear pin holes are also paired on the speed increaser flange and the coil flange, and anti-shear pins are fitted into the anti-shear pin holes. This solution can effectively transmit torque, reduce bolt shear force, ensure high-speed rotational stability, and enhance impact resistance.

This invention discloses a method for controlling the rotation of a cavity during two-color injection molding, relating to the field of precision injection molding technology. The method includes: collecting interface temperature, pressure, and micro-deformation data to construct an interface load-bearing capacity evaluation; completing a curing assessment and obtaining the interface load-bearing capacity evaluation; adjusting the floating support structure and wedge mechanism to form a decoupled floating state based on the interface load-bearing capacity evaluation; predicting the rotational stability window and generating a target rotation trajectory based on the interface load-bearing capacity evaluation; driving the turntable to rotate and recording interface micro-deformation to generate an interface deformation field; confirming the integrity of the mold cavity by centering the positioning pin and positioning cone after rotation; converting the interface deformation field into regionalized deformation weights to implement secondary injection molding compensation and obtaining a compensation effect evaluation; constructing a comprehensive performance evaluation based on the compensation effect evaluation and updating process parameters. This invention achieves interface offset correction and improved regional deformation uniformity through secondary injection molding compensation based on regionalized deformation weights generated from the interface deformation field.

The invention relates to a rotor iron core part and an assembling device thereof, and relates to the technical field of rotor iron cores, and the rotor iron core part comprises a rotor part and a stator iron core. The assembling device comprises a base, a supporting column, a working platform, a stamping die, a positioning mechanism, a middle cylinder, a rotating part, a position correcting mechanism, a limiting pressing mechanism, an extruding mechanism, a supporting electric push rod, a sliding column and a supporting mechanism. The rotation stability of the subsequent rotor is easily influenced by the higher temperature, the magnetic conduction effect of the iron core is also easily influenced by the high temperature of the rotor, and the iron core is easily deformed due to the high temperature; and lamination of the existing stator iron core mostly depends on welding or bolt fixation, the process is complex, and the integrity of the iron core is easily influenced by assembly errors.

The utility model provides a paddle, a bearing part, a folding paddle, a power assembly and an unmanned aerial vehicle, the paddle can be installed on the bearing part, the bearing part can be installed on the unmanned aerial vehicle, the paddle is provided with a first locking part, the bearing part is provided with a second locking part matched with the first locking part, and the paddle is rotationally unfolded from a folding state under the action of driving force. The first locking component is locked to the second locking component, and the second locking component is closer to the blade tip position of the unfolded blade compared with the first locking component. The paddles can be mutually locked with the bearing piece after being unfolded, so that the positions of the paddles are kept stable after the paddles are rotated and unfolded, the paddles are kept locked after being unfolded and do not swing or vibrate back and forth, and the rotation stability of the folding paddle is improved; and the probability of arm breakage and unmanned aerial vehicle explosion caused when the rotation frequency of the blades is close to the instability frequency point of the arm is reduced, and then the flight safety of the unmanned aerial vehicle is improved.

A versatile dual-application hook and storage system is disclosed. A mounting shaft with a central pass-through bore enables tool-free engagement with pegboards or slotted panels via a keyhole opening and also permits direct or through-panel wall mounting with a fastener. Lateral pin-lock features provide rotational stability. The system supports interchangeable accessories including but not limited to hooks, straps, baskets, and other storage or non-storage elements across multiple surface types in a compact, space-efficient design.

This utility model relates to the field of door lock technology, specifically a positioning and rotating handle device. It includes a mounting plate with a positioning ring installed in the center. A handle component is rotatably connected to the outside of the positioning ring. The handle component includes a rotating part, the front end of which is fitted onto the positioning ring. A spring is installed inside the rotating part, and a steel ball is attached to the end of the spring. The positioning ring has several equally spaced positioning grooves arranged in a ring on the side near the handle component. When the handle component rotates, the steel ball engages with each positioning groove in sequence, increasing rotational stability and feel. In this positioning and rotating handle device, the spring pushes the steel ball to engage with the positioning grooves on the positioning ring, achieving precise positioning of the handle component during rotation. Each rotation, with the steel ball embedding into the positioning groove, provides clear tactile feedback to the user, preventing any play or jamming during operation. It is particularly suitable for applications requiring high operational precision, improving stability and reliability.

The utility model discloses a plasma arc welding machine for stainless steel pipe production, which belongs to the field of steel pipe production and comprises a base, a welding mechanism arranged above the base, two groups of jacking components symmetrically arranged at two ends of the top of the base, an auxiliary supporting component arranged above the base and two groups of supporting driving mechanisms symmetrically arranged at the top of the base. The supporting driving mechanism comprises an upper driving assembly and a lower driving assembly, the lower driving assembly is fixedly connected to the top of the base, a mounting frame is fixedly connected to the top of the base, and the upper driving assembly is mounted on the mounting frame through a lifting assembly. The stainless steel pipe welding device has the beneficial effects that the upper driving assembly and the lower driving assembly are arranged, the upper driving assembly is driven by the lifting assembly to move downwards, the upper driving wheel abuts against the stainless steel pipe, friction between the stainless steel pipe and the driving wheel is increased, the rotating stability of the stainless steel pipe is guaranteed, and the welding quality is improved.

The utility model discloses a medicine inspection liquid separation filter device, including base and centrifugal cylinder, the upper end of base center position is fixedly connected with the protective cover, the right side upper end of base is fixedly connected with the support seat, the upper end of the support seat is fixedly provided with the drive motor, and the drive motor is fixedly connected with the centrifugal cylinder. And a rotating shaft is fixedly connected to a driving shaft of the driving motor, and the rotating shaft horizontally and rotatably penetrates through the protective cover. According to the utility model, the plurality of test tubes respectively penetrate through the plurality of circular through holes in the annular block and are respectively inserted into the arc-shaped slots in the plurality of cylindrical seats, so that the test tubes can be conveniently and quickly positioned in the centrifugal cylinder, the structure is simple and practical, and the rotating rod is driven to rotate by the driving motor; the rotating rod drives the centrifugal barrel to stably rotate under the limiting action of the ball on the limiting block and the annular limiting groove, so that the rotating stability of the test tube in the centrifugal barrel is improved, and liquid medicine in the test tube is prevented from spilling out.

This application provides a podded propulsion device and a mobile watercraft. The mobile watercraft includes a watercraft carrier and a podded propulsion device. The podded propulsion device includes a gantry, a podded propulsion main unit, a rudder, a steering motor, and a drive control module. The gantry is connected to the watercraft carrier; the podded propulsion main unit is fixed to the gantry, the rudder is rotatably connected to the gantry, and the steering motor is connected to the rudder. The podded propulsion main unit and the rudder are both mounted on the gantry, forming an integral structure, which integrates propulsion power and steering structure, improving the steering efficiency of the electric boat and reducing the turning radius. The gantry ensures that the relative positions of the podded propulsion main unit and the rudder are properly installed, improving the rotational stability and steering reliability of the rudder. The drive control module controls the steering motor and the podded propulsion main unit respectively through steering control lines and propulsion control lines. Through wire control, independent control of steering can be achieved, facilitating intelligent control of the electric boat and improving control reliability.

The utility model discloses a seesaw type armature installation structure, a relay magnetic circuit structure and a relay, comprising an armature component and two non-magnetic side shaft brackets, the armature component is provided with a rotating shaft, the two side shaft brackets are provided with rotating shaft installation positions matched with the rotating shaft, and the two side shaft brackets are configured to be fixedly connected between two yokes. And the armature component is rotationally connected with the two side shaft brackets through the rotating fit between the two ends of the rotating shaft and the rotating shaft mounting positions on the two side shaft brackets respectively. According to the utility model, the two side shaft brackets are ingeniously arranged between the two original yokes in the magnetic circuit structure of the relay, and the side shaft brackets are not directly contacted with the coil part in the magnetic circuit structure of the relay, so that the defects of deformation and the like caused by the influence of high temperature generated when the coil works are overcome, and the rotation stability of the armature component is greatly ensured; and the assembly is simple and convenient, and automatic assembly is facilitated to improve the assembly efficiency.

The invention provides a thrombus rotary cutting device. The thrombus rotary cutting device comprises a motor and a rotary cutting catheter. The rotary cutting catheter comprises a catheter body, the catheter body is directly or indirectly fixedly connected with the fixing part of the motor, and one or more second through holes are formed in the side face of the far end of the catheter body. The rotary cutter comprises an outer sleeve and an inner sleeve; the outer sleeve is embedded in the far end of the catheter body, and a third through hole is formed in the position, corresponding to the second through hole, of the outer sleeve; the inner sleeve is arranged in the outer sleeve, and a fourth through hole is formed in the position, corresponding to the second through hole, of the inner sleeve; and the driving wire is connected between the inner sleeve and the moving part of the motor. According to the thrombus rotary cutting device, the thrombus can be subjected to rotary cutting through relative movement of the inner sleeve and the outer sleeve; and the rotation stability of the inner sleeve can be guaranteed, and the overall operation stability of the rotary cutter is guaranteed.

The utility model relates to the technical field of pneumatic index plates, in particular to a pneumatic index plate stable in positioning, which comprises a pneumatic index plate base, a bearing is embedded and fixed at the upper end of the pneumatic index plate base, a shaft rod is in interference fit with the inner ring wall of the bearing, a main body index plate is fixedly mounted at the upper end of the shaft rod, and the main body index plate is fixedly mounted at the lower end of the shaft rod. A pneumatic air cylinder is installed on one side of the pneumatic index plate base in an embedded mode, an adjusting air valve embedded into the pneumatic index plate base is arranged on one side of the air cylinder, and two supporting frames which are symmetrically distributed are arranged at the upper end of the main body index plate. According to the utility model, the cylinder drives the main body index plate to rotate, and the linkage design of the electric push rod and the positioning pin is combined, so that multi-point positioning can be realized, the position of the index plate can be quickly locked after the index plate rotates, and the structure of the shaft lever supported by the bearing and the extension plate further enhances the rotation stability, effectively reduces vibration and offset, and improves the processing quality.

This invention discloses a laser cladding device for wear-resistant layers on plastic wire drawing machine screws, comprising a slide table, a robotic arm assembly fixedly connected to the top of the slide table, a welding head fixedly connected to the top of the robotic arm assembly, bases respectively provided on both sides of the slide table, and a turntable three rotatably connected to the top of the base. The turntable three has several annularly distributed grooves. This invention, through a point-contact clamping mechanism, can switch the surface contact clamping of the pressure plate to the point-contact clamping of the pressure block when cladding the end of the screw. By precisely adjusting the position of the pressure block, it avoids the already clad wear-resistant layer area and only contacts and fixes with the non-processed surface of the screw substrate. This ensures rotational stability during single-end processing and completely avoids damage such as squeezing cracks and peeling caused by the clamping mechanism to the incompletely cured wear-resistant layer, realizing continuous cladding of the entire surface of the screw from the main body to the end.

The utility model relates to a tool turret with a fixing base stabilizing assembly. The tool turret comprises a machining assembly, a tool changing assembly, a supporting and abutting piece and the fixing base stabilizing assembly. The machining assembly is provided with a supporting shaft pipe and a milling shaft fixing base arranged on the supporting shaft pipe. The tool changing assembly is provided with a tool changing shaft pipe which can be rotationally arranged on the supporting shaft pipe in a sleeving mode and a tool disc which is fixedly connected to one end of the tool changing shaft pipe. The annular supporting and abutting piece surrounds the milling shaft fixing base, and the outer ring circumferential face of the annular supporting and abutting piece abuts against the cutterhead. The fixing seat stabilizing assembly between the supporting and abutting piece and the milling shaft fixing seat is provided with a driving pressing piece and a driven pressing piece, and the abutting faces of the driving pressing piece and the driven pressing piece incline in the opposite directions and abut against each other. The driving packing piece and the driven packing piece respectively push and abut against the milling shaft fixing base and the cutter head, the problem that the milling shaft fixing base of an existing power tool turret is not fully supported in the radial direction, and then the rotation stability of a milling shaft is affected can be solved, the milling shaft fixing base can be more stable, and the milling shaft can rotate smoothly.

The utility model discloses a side wheel support rotating shaft structure with a dustproof sealing ring, which comprises a base, a rolling wheel is rotatably arranged on the base, blocking seats coaxially and rotatably arranged with the rolling wheel are symmetrically arranged on the base, the rolling wheel is positioned between the blocking seats, and blocking parts tightly attached to the side surface of the rolling wheel are arranged on the blocking seats. The blocking part is provided with an annular inclined guide slope surface, and the outer ring side of the blocking part is the low position of the inclined guide slope surface. According to the edge wheel support rotating shaft structure with the dustproof sealing ring, the blocking seat synchronously rotates along with the rolling wheel, so that the inclined guide slope surface of the blocking part can prevent dust or hair from being wound on the axial side face of the rolling wheel; when approaching the rotating shaft of the roller, dust or hair is blocked by the inclined guide slope surface of the blocking seat and falls off to the ground more easily, so that the problem of rotation clamping stagnation of the roller due to the fact that the peripheral side of the rotating shaft of the roller is adhered by the dust or hair is avoided, and the rotating stability of the roller is improved.

The utility model relates to the technical field of pervious concrete maintenance, in particular to a pervious concrete maintenance device which comprises a support, rolling wheels are installed on the surface of the support, and a rotating shaft is installed on the top face of the support. A positioning structure is installed on the top face of the support and comprises a fixed seat, the fixed seat is fixedly installed on the top face of the support, a movable seat is movably installed on the top face of the fixed seat through a bearing, a coil spring is arranged at the joint of the fixed seat and the movable seat, and a fixed frame is fixedly connected to the top face of the movable seat. The movable seat is arranged to be matched with the coil spring, the rotating shaft can be limited in the fixed seat, the rotating stability of the rotating shaft is guaranteed, meanwhile, the rotating shaft is prevented from falling off, the friction pad can be driven to abut against the rotating shaft by rotating the hand-rotating screw, the rotating shaft can be further fixed, and the rotating shaft is prevented from falling off. The plastic film is prevented from scattering due to rotation of the rotating shaft, and carrying convenience is not affected.

The present invention provides a stirring structure and a stirring method for low-vibration, highly efficient homogenization. It addresses the uneven force exerted on the stirrer by glass flowing into the mixing tank from one side, which impairs the long-term stable operation of the stirrer. Furthermore, the glass melt flowing in from one side tends to exhibit viscosity-temperature segregation proximally, reducing the homogenizing effect. By employing a specially shaped buffer basin to transfer the force of the liquid before it enters the mixing tank, and by continuously injecting glass melt into the mixing tank using a 360° overflow process, the rotational stability of the entire stirrer is significantly improved. This ensures a long service life, reliability, and efficient homogenization of large flow rates.It enables a uniform force to be applied to the stirrer in the circumferential direction of the glass melt, significantly improves the problem of abnormal vibrations of the stirrer during operation, and achieves efficient homogenization even with large flow rates of glass melt, thus providing device support for the production of high-flow substrate glass.

This utility model relates to the field of transformer connection technology and discloses a high-voltage side quick-connect transformer access mechanism, including a housing. A quick-connect mechanism is fixedly connected to the outside of the housing. A multi-layer mechanism is also fixedly connected to the outside of the housing. Multiple high-voltage bushings are fixedly connected to the outside of the housing. The quick-connect mechanism includes a drive assembly for driving. A connecting fixing block is fixedly connected to the outside of the drive assembly. The drive assembly is fixedly connected to the outside of the high-voltage bushings. A connecting support ring is fixedly connected to the outside of the connecting fixing block. Multiple supporting rotating columns are fixedly connected to the outside of the connecting support ring. In this utility model, cylinder drive significantly increases speed; the multi-stage transmission structure ensures reliable connection; the double support column design enhances rotational stability and reduces connection errors; and the automated connection process reduces the risk of errors, improving operational efficiency and safety.

The ankle pump training device comprises a supporting plate and a base, a containing groove is formed in the side wall of the supporting plate, the base is movably connected into the containing groove in an inserted mode, arc-shaped plates are symmetrically and fixedly connected to the top side of the supporting plate, and limiting grooves are formed in the opposite side walls of the arc-shaped plates. A rotating motor drives a rotating shaft to rotate, the rotating shaft drives a rotating plate to rotate, the rotating plate drives a training plate to rotate, a patient can be guided to do ankle pump training, the following rate and accuracy of ankle pump movement are improved, practicability is higher, a sliding rod is arranged to be used in cooperation with a limiting groove formed in an arc-shaped plate, so that the rotating stability of the rotating plate is higher, and the training effect is better. By arranging the adjusting assembly, the positions of the feet of the patient can be conveniently fixed, an adjusting motor is started to drive a rotating rod to rotate, the rotating rod drives multiple sets of storage cylinders to rotate, the storage cylinders rapidly wind adjusting belts, and the flexibility and the convenience are higher.

The utility model relates to the technical field of air conditioners, in particular to an air guide device and an air conditioner. The air conditioner comprises a shell and an air guide device, the shell is provided with an air outlet, the air guide device comprises a base, a motor, a worm, a worm gear, a connecting piece and an air guide door, and the base is assembled on the shell; the motor is assembled on the base; the worm is in transmission connection with an output shaft of the motor; the worm gear is meshed with the worm; the connecting piece is connected with the worm gear; the air guide door is connected with the connecting piece and located at the air outlet. When the output shaft of the motor drives the worm to rotate, the worm drives the air guide door to rotate through the worm gear and the connecting piece so as to adjust the flow direction of air blown out of the air outlet. According to the air guide device, the rotation stability of the air guide door can be improved, it is ensured that the air guide door can rotate at a constant speed, and the user experience is improved.

This utility model belongs to the technical field of beauty device equipment, and discloses a foldable light panel and a beauty device. The foldable light panel includes a main board and two side boards. The main board and the side boards are connected by a rotating component. The rotating component includes a rotating assembly, which includes a first rotating component and a second rotating component. It can adjust the irradiation angle to achieve multi-angle irradiation. The rotating connection allows the main board and the side boards to be stacked, reducing space occupation and making it easy to carry. In addition, the rotating component also includes a first bushing and a second bushing. The side wall of the first bushing has a first opening, and the first rotating shaft is placed in the first bushing. The side wall of the second bushing has a second opening, and the second rotating shaft is placed in the second bushing. This can reduce the risk of shaft misalignment and improve rotational stability. Moreover, the wires can pass through the first and second openings to avoid the main board and the side boards from squeezing the wires and causing safety hazards when rotating.

The objective was to create a suction device and a vacuum cleaner capable of improving the rotational stability of the rotating brush. [Solution] The suction device 100 comprises a rotating brush 160 having a rotatable cylindrical holder 170, a drive unit 180 having an electric motor 182 disposed within the holder 170 and serving as a drive source for the rotating brush 160, and an electric motor housing 184 housing the electric motor 182, a shaft support unit 200 supporting the output shaft 182a of the electric motor 182, and a rotating support unit 190 that transmits the driving force of the electric motor 182 to the holder 170, wherein the electric motor housing 184 is in contact with at least a part of the outer circumference of the rotating support unit 190.

The utility model discloses a rotary guiding mechanism capable of accurately positioning. The rotary guiding mechanism comprises a central shaft and a plurality of guiding arms which are rotatably arranged on the central shaft, the rotating platform is used for reducing the rotating speed and improving the rotating stability of the guiding arms, and the servo motor is connected with the rotating platform, provided with a brake structure and used for accurately positioning the guiding arms. The rotating platform is further provided with a fixing shaft which drives the guiding arm to rotate through a connecting piece. According to the utility model, the servo motor with the brake structure is used for driving the guiding arm to rotate, so that the positioning precision of the guiding arm is improved, and the subsequent guiding arm is prevented from moving; the servo motor drives the rotating platform to rotate, the rotating platform drives the fixing shaft and the center shaft to rotate, then the guiding arm is driven to rotate, the rotating speed of the guiding arm can be reduced, and the rotating stability is improved.

This utility model belongs to the technical field of shearing equipment, specifically referring to a shearing pliers head and a shearing tool. The shearing tool includes a shearing pliers head and a driving device for driving the shearing pliers head. The shearing pliers head includes: a pliers head base, a first pliers body, and a second pliers body. At least one first connecting rod is hinged to the rear end of the first pliers body, and at least one second connecting rod is hinged to the rear end of the second pliers body. The first and second connecting rods are mounted on a push rod via connecting rod pins. A guide structure is provided between the pliers head base and the connecting rod pins. This guide structure can guide the connecting rod pins and regulate forces acting outside their direction of movement. When the first and second pliers bodies deflect due to uneven force, the guide protrusion can abut against the side wall of the guide groove and regulate their direction, ensuring the rotational stability of the first and second pliers bodies; it also ensures the consistency of movement of the push rod and piston rod, preventing piston deviation and scratching of the piston cavity side wall, and increasing the service life of the cylinder.

The utility model discloses a detachable oil-gas separator, relates to a blow-by treatment device for a crankcase of an internal combustion engine, and is suitable for a scene in which a filter element rotor needs to be regularly maintained. The air purifier structurally comprises a shell assembly, an air inlet assembly, a filter element rotor assembly and a driving assembly, and rapid maintenance is achieved through modular design. The driving assembly drives the impeller to rotate through the spraying holes by means of high-pressure engine oil, the center shaft and the filter element rotor assembly are driven to rotate at a high speed, and oil in blow-by gas of the crankcase is separated by means of centrifugal force. The separated gas is discharged from the gas outlet, and the oil liquid flows back to the crankcase through the oil return opening. The filter element rotor assembly can be replaced only by disassembling the air inlet assembly, so that the maintenance cost is reduced; the high-speed rotation stability is improved by adopting the constraint of'circumferential limiting matched with spring axial pressing 'and double-bearing supporting; the conical structure assists in assembly, and the sealing element ensures the sealing performance of the interface. The problems that a traditional integral type separator is complex in maintenance, and a rotor is prone to moving are solved, and the separator is suitable for engines of passenger vehicles, commercial vehicles and engineering machinery.

A prosthetic component (3) of a dental implant (1) and an abutment (2) for its screw retention are related to the parts of a dental implant. The prosthetic component (3) comprises a fastening base (6) with a through hole (7) for a prosthetic screw (5). The base (6) is made with a connecting socket in the form of an annular recess (8) around the hole for the screw (7). The supporting lateral surfaces of the recess (8) are conical in shape, mutually coaxial and diverge outward. The abutment (2) comprises a seat for the fastening base (6) of the component (3). The seat is made in the form of an annular projection (22) around a threaded hole (21) for the screw (5). The supporting lateral surfaces of the annular projection (22) are conical in shape, mutually coaxial and converge outward. The tightness of the screw connection of the prosthetic component (3) with the abutment (2) is increased. Increased rotational stability of the component (3) relative to the abutment (2). Prevented loosening of the screw (5). Increased reliability of the screw connection. As a result, the risk of inflammatory reactions is reduced. Reduced risk of implant rejection (1).