58results about How to "Strong pressing force" patented technology

The present invention discloses a mechanical tensioning gravity energy storage power generation device based on a rail train and a power generation track line thereof, including a power station under the track, two rows of drive plates are arranged at the bottom of the train, the power station includes a box buried under the track, a power generation assembly is arranged in the box, the power generation assembly is arranged in the middle of the track, and the power generation assembly is connected to a tensioning rope assembly, the tensioning rope assembly includes a tensioning steel wire rope, one end of the tensioning steel wire rope is connected to the power generation assembly and arranged in the box, and the other end is connected to a mechanical tensioning adjustment assembly, the mechanical tensioning adjustment assembly is arranged outside the track, and the mechanical tensioning adjustment assembly drives the power generation assembly by adjusting the tensioning force of the tensioning steel wire rope, and is pressed toward the drive plate on the train. The present invention adopts a mechanical tensioning rope design to realize the pressing of the power generation assembly and the train drive plate, avoids the power station pressing being affected by the ambient temperature, improves the applicability of the power station, and is also more convenient for maintenance and adjustment.

The invention relates to the technical field of oil and gas well cementation tools, in particular to a float collar float shoe for well cementation, and aims to solve the problem that an existing float collar float shoe is insufficient in reverse pressure bearing. According to the float collar float shoe for well cementation, the float shoe comprises a one-way valve, and the one-way valve comprises a valve body and a valve element; the valve element comprises a rod body, a rubber sleeve and a spring piece. One end of the rod body is sleeved with the rubber sleeve, and the rubber sleeve abuts against the valve body to form sealing; the spring piece is connected with the rod body and used for applying thrust to the rubber sleeve so that the rubber sleeve can be tightly pressed on the valve body. According to the one-way valve, the spring piece is arranged for sealing compensation, and the sealing performance and the pressure bearing capacity are improved. After the valve element abuts against the valve body under the action of an original spring to form sealing, the rubber sleeve is pressed and deformed to extrude the spring piece, then the spring piece deforms and generates elastic force to further press the rubber sleeve and the valve body, the pressing force is increased, radial shrinkage of the rubber sleeve is limited, and therefore the reverse pressure bearing capacity of the rubber sleeve is improved.

The utility model discloses an automobile wire harness cutting mechanism which comprises a cutting table, supporting legs, pressing structures, a cleaning structure, a vertical support, a transverse support, a first air cylinder, a first telescopic rod, a mounting plate, a cutting knife and a control switch, the multiple supporting legs are arranged below the cutting table, and the pressing structures are symmetrically arranged on the two sides of the upper portion of the cutting table. The pressing structures are used for pressing the two ends of the automobile wire harness, a cleaning structure is arranged between the pressing structures and used for cleaning dust and chippings on the surface of the automobile wire harness, vertical supports are symmetrically arranged in the middle of the upper portion of the cutting table, a transverse support is arranged between the vertical supports, and the transverse support is located at the top ends of the vertical supports. According to the wire harness cutting device, the two ends of a wire harness can be pressed tightly, the wire harness is in a tightened state before being cut, then subsequent cutting is facilitated, dust and chippings are removed through the cleaning structure, and the working efficiency is improved.

The invention provides a locking device (20) for a cover plate of a centrifugal machine, which is used for locking the cover plate of the centrifugal machine and comprises a guide fixing block (33) used for being relatively fixedly arranged on the centrifugal machine; the pressing block (32) is arranged on the guide fixing block (33) and can move relative to the guide fixing block (33); the pressing sleeve (31) is attached to the pressing block (32) and used for being matched with the centrifugal machine cover plate to lock the centrifugal machine cover plate; and the actuating unit is connected with the pressing block (32) and is configured to be capable of driving the pressing block (32) to move and driving the pressing sleeve (31) to move, so that the pressing sleeve (31) moves between a first position for locking the cover plate of the centrifugal machine and a second position for unlocking the cover plate of the centrifugal machine. According to the locking device of the centrifugal machine cover plate, locking and unlocking operation can be conveniently executed, and accidental unlocking can be effectively prevented.

The invention relates to the technical field of cleaning control, in particular to a cultivation tank cleaning system based on touch detection, which comprises a sensor module and a cleaning module, and the cleaning module comprises a motion track for bearing a to-be-cleaned cultivation tank to perform horizontal reciprocating motion and a cleaning box for cleaning the cultivation tank; a control module, the data analysis unit is used for determining the type of dirt existing in the cultivation tank to be cleaned according to the type of abnormal tactile data detected by a tactile sensor and the type of an occurrence time point of the abnormal tactile data; control unit for determining the working mode of a pinch roller in a cleaning tank according to the type of dirt existing in a cultivation tank to be cleaned and the wear difference of a bearing wheel in the cleaning tank, and for determining the cleaning of a cleaning module or the pressing of the pinch roller according to the presence or absence of residual dirt in the cleaned cultivation tank and the presence form of the residual dirt and the adjusting unit is used for adjusting the force.

The invention discloses a large variable frequency motor iron core pressing device which is characterized in that a guide sleeve is fixedly connected with a supporting disc through a screw, a guide column is fixedly connected with a pressing inner ring after being connected with the guide sleeve in a sliding mode, a positioning seat provided with an iron core is fixedly connected with the pressing inner ring, a reset spring is arranged between the pressing inner ring and the supporting disc, and the reset spring is installed on the outer side of the guide sleeve. The driving disc provided with the rolling wheel assembly is installed on the pressing outer ring, the rolling wheel assembly is composed of a pressing wheel and a wheel shaft supported by a rolling wheel base, the pressing inner ring can rotate with the pressing outer ring through a steel ball, the pressing outer ring is fixedly connected with the pressing guide disc through a connecting rod, and the pressing driving disc is installed in a pressing guide disc groove. A shifting fork is arranged on the pressing driving disc and connected with the pressing air cylinder through a hinge piece, the rotating shaft is fixedly connected with the base through a fixing base, and the hinge base is fixedly connected with the pressing air cylinder and can rotate on the rotating shaft. An outer ring is fixedly connected with the base through an inner ring which is in rolling connection with a steel ball and a guide seat which is provided with a positioning cylinder.

The utility model discloses a water conservancy project flood prevention device, and relates to the technical field of flood prevention devices, the water conservancy project flood prevention device comprises a flood prevention assembly, the flood prevention assembly is composed of an L-shaped water retaining seat and a front end extension plate, the interior of the L-shaped water retaining seat is of a cavity structure, and the top of the L-shaped water retaining seat is open; when an L-shaped baffle structure composed of the L-shaped water retaining base and the front end extending plate is placed on the ground, an inner cavity of the L-shaped water retaining base is filled with water through an opening in the top of the L-shaped water retaining base, and the pressing force between the bottom of the L-shaped water retaining base and the ground and between the bottom of the front end extending plate and the ground is increased. According to the flood prevention assembly, the L-shaped water retaining base of the cavity structure is arranged, water is filled into the inner cavity of the L-shaped water retaining base when the stability is weak due to small water flow, and therefore the pressing force between the L-shaped water retaining base and the ground and the pressing force between the front end extending plate and the ground can be increased, and the flood prevention assembly can keep a stable state under the condition that the water flow is small.

The invention relates to the technical field of ship engineering, in particular to a ship hole sealing device which comprises a connecting piece, a blocking piece, a sealing piece and a pressing piece. The stopping piece is connected to the connecting piece; the blocking piece can penetrate through the hole and is blocked with the plate body in the axial direction of the hole; the sealing piece is sleeved on the connecting piece; the pressing piece is assembled to the connecting piece in a threaded mode. Wherein the blocking piece, the plate body, the sealing piece and the pressing piece are sequentially arranged in the axial direction of the hole; in the using process, an operator firstly enables the blocking piece to penetrate through the hole and enables the blocking piece to block the end, away from the operator, of the plate body, then the sealing piece sleeve and the pressing piece are assembled on the connecting piece, only the pressing piece is made to abut against the sealing piece through rotating pressing, and the sealing piece can block a port of the hole; according to the sealing device for the ship hole, large pressing force can be formed between the sealing piece and the plate body through the pressing piece, and therefore the sealing device for the ship hole can have good sealing performance and can be stably connected with a ship.

The invention discloses an anti-falling device for quick door chain disconnection. The anti-falling device comprises a sliding block mechanism and a ratchet mechanism. The sliding block mechanism comprises an upper sliding block and a lower sliding block which are in sliding fit in the vertical direction, and a spring is arranged between the upper sliding block and the lower sliding block. The ratchet wheel mechanism comprises a support and a fan-shaped ratchet wheel, the support is fixedly arranged on the door curtain, the fan-shaped ratchet wheel is in running fit with the support through a central rotating shaft, the fan-shaped ratchet wheel is of an eccentric structure, and a torsional spring is arranged between the fan-shaped ratchet wheel and the support; the ratchet mechanism is connected with a steel wire rope, and the other end of the steel wire rope is fixedly connected with the lower sliding block. And the directions of torques generated by the steel wire rope and the torsional spring on the fan-shaped ratchet wheel are opposite. After the transmission chain is disconnected, under the action of the torsion spring, the end, away from the center rotating shaft, of the arc portion of the fan-shaped ratchet wheel rotates in the direction of the guide rail, when ratchet wheel teeth of the fan-shaped ratchet wheel are pressed on the guide rail, the door curtain is locked, the door curtain is finally prevented from falling continuously, and the safety protection effect is achieved.

The invention discloses a cage trolley carrying robot and a carrying method. The cage trolley carrying robot comprises a first chassis and a second chassis which are connected through a hinge shaft, and a chassis body capable of self-adapting to the terrain is formed; the scissor-fork assembly stretches across the double chassis, one end of the scissor-fork assembly is hinged to the first chassis, and the other end of the scissor-fork assembly is hinged to the second chassis; the moving assembly comprises a driving wheel with a damping seat and a universal wheel; a two-dimensional code camera is integrated on the scissors fork arm, and the two-dimensional code camera and the SLAM laser part on the chassis form a hybrid navigation system; through the design of the hinged chassis and the cross-chassis shear fork mechanism, the ultralow initial height of the robot is achieved, and the robot can enter low spaces such as the bottom layer of a goods shelf; the road holding force of the driving wheel is enhanced and the trafficability and the stability of the complex ground are improved by utilizing the coupling of the mechanical characteristics of the hinge structure and the shear fork mechanism; the hybrid navigation mode can be flexibly switched according to scenes, global autonomy and node accuracy are integrated, and the automation level, environmental adaptability and operation efficiency of cage trolley carrying are improved.

The utility model provides a tray for rotating an empty barrel, and relates to the technical field of industrial empty barrel production, a tray main body is characterized in that a conical boss is arranged in the middle of the top end of the tray main body, four sliding grooves are formed in the top end of the tray main body in the radial direction, and an elastic pawl is slidably connected in each sliding groove; an annular air cavity is formed in the peripheral edge of the tray body, a groove is formed in the middle of the bottom end of the tray body, and a rotating shaft is installed in the groove. The conical boss is designed to guide the empty barrel to automatically slide into the center when the empty barrel is reversely placed, + / -0.5 mm level positioning precision is achieved, manual adjustment is not needed, an automatic production line is adapted, meanwhile, the elastic buffer pad arranged on the outer wall of the conical boss compensates for the tolerance of a barrel opening, and the barrel body is prevented from being damaged by hard collision. The elastic pawl mechanism is extruded and contracted by the conical boss when the barrel body is pressed downwards, and then the pawl is meshed with the protruding part at the bottom end of the inverted buckle of the empty barrel, so that mechanical self-locking is formed.

The utility model relates to the technical field of flange sealing structures, in particular to a pressure self-tightening type middle flange high-temperature leakproof sealing structure which comprises a lower flange and an upper flange, the lower flange and the upper flange are connected through a fixing assembly, and a sealing assembly is arranged between the lower flange and the upper flange. The lower flange comprises an arc-shaped first bearing face facing the upper flange, a sealing piece is arranged in the middle of the lower flange and comprises a first pressure-bearing face facing the first bearing face and a second pressure-bearing face facing the upper flange, a first sealing groove is formed in the middle of the first pressure-bearing face, and a second sealing groove is formed in the middle of the second pressure-bearing face. An auxiliary sealing ring is connected to the middle of the first sealing groove in a clamped mode, a main sealing ring is connected to the middle of the second sealing groove in a clamped mode, through the arrangement of the sealing pieces and the sealing assemblies, during use, the sealing pieces achieve self-tightening sealing through pressure, sealing treatment is conducted on the flange connecting position through mutual cooperation of the sealing assemblies, and therefore the sealing reliability and stability are greatly improved.

The mechanical tensioning gravity energy storage power generation device based on the rail train comprises a power station below a rail, two rows of driving plates are arranged at the bottom of the train, the power station comprises a box body buried below the rail, a power generation assembly is arranged in the box body, and the power generation assembly is arranged in the middle of the rail. The power generation assembly is connected with a tensioning rope assembly, the tensioning rope assembly comprises a tensioning steel wire rope, one end of the tensioning steel wire rope is connected with the power generation assembly and arranged in the box body, the other end of the tensioning steel wire rope is connected with a mechanical tensioning adjusting assembly, and the mechanical tensioning adjusting assembly is arranged on the outer side of the rail. The mechanical tensioning adjusting assembly drives the power generation assembly to press a driving plate on the train by adjusting the tensioning force of the tensioning steel wire rope. Compression of the power generation assembly and the train driving plate is achieved through the design of the mechanical tensioning rope, the situation that compression of a power station is affected by the environment temperature is avoided, the applicability of the power station is improved, and meanwhile overhaul and adjustment are more convenient.

The invention relates to a honing tool. 2.1 The invention relates to a honing tool having a tool body which is tubular at least in sections and which comprises a cutting region with at least one honing stone receiving opening which runs through from the inside of the tool body to the outside and which serves to receive an individual honing stone. The dimensions of the honing bar receiving opening and the honing bar are coordinated with each other in the circumferential direction and preferably also in the axial direction such that the honing bar is radially movable and is received between the boundary surfaces of the honing bar receiving opening substantially without play in the circumferential direction of the tool body. By means of the radial mobility, the honing stone can be fed in the radial direction by means of the feeding element which is guided in an axially movable manner inside the tool body via the co-acting inclined surface during the axial movement of the feeding element. The invention relates to a honing tool having a honing stone resetting system, which comprises at least one elastic resetting element. In the installed state of the honing bar, the honing bar resetting system acts on the honing bar in such a way that a radial force acts from the outside to the inside and presses the honing bar against the feed element. 2.2 According to the invention, the elastic restoring element is C-shaped and partially surrounds the outer side of the tool body. 2.3 for example as a honing tool for surface treatment.

The utility model relates to the technical field of couplings, in particular to a conical disc friction safety coupling which comprises a brake wheel used for being fixedly connected with a shaft section, and a friction groove is formed in the end face of one side of the brake wheel; the conical disc is embedded into the friction groove, a friction conical surface is arranged on the outer wall of the peripheral side of the conical disc, and the friction conical surface is in friction abutting connection with the inner wall of the friction groove; the elastic force adjusting assembly is arranged on the side, away from the brake wheel, of the conical disc, is used for being connected with a shaft section and has the trend of driving the conical disc to be tightly pressed in the friction groove. The involute spline tooth coupling has the advantages that the long machining period of the coupling due to the involute spline tooth design is shortened, and the purchase cost of special machining equipment is reduced.

The utility model discloses a multifunctional relay protector flange which comprises a flange plate, a through hole and a plurality of screw rods, the flange plate is provided with the through hole, the flange plate is provided with the screw rods arranged in a circumferential mode, the screw rods are arranged around the through hole, and the screw rods are fixedly arranged on the flange plate in a penetrating mode. The structure is firm, and oil leakage and gas leakage at the position of the box cover and the multifunctional relay protector are reduced.

The utility model provides an auxiliary pressing structure, a circuit board assembly and electronic equipment, and relates to the field of electrical technology. The auxiliary pressing structure comprises a base and an elastic structure, the base is provided with a first face structure, and the base is used for being connected with a to-be-connected structure and supported on the to-be-connected structure through the first face structure; the fixed end of the elastic structure is connected with the base, the free end of the elastic structure and the first face structure are arranged in a spaced mode in the first direction, and the free end of the elastic structure is used for making elastic contact with a to-be-pressed piece in the first direction. Targeted pressing force control does not need to be conducted on the to-be-pressed piece, pressing operation of the to-be-pressed piece on the to-be-connected structure can be rapidly achieved, the free end of the elastic structure is arranged to be spaced from the first face structure in the first direction, and the situation that the pressing force borne by the to-be-pressed piece is too large due to the fact that the elastic force of the elastic structure is too large can be avoided. And the to-be-pressed part can be conveniently placed between the elastic structure and the to-be-connected structure.

The invention discloses bending equipment for door plank machining, and belongs to the field of door plank machining equipment.The bending equipment comprises a machining table, a rotatable bending piece is arranged on the machining table, the bending piece is driven by a motor installed on the machining table to rotate, an installation frame is connected to the machining table, and an air cylinder is installed on the installation frame; a pressing frame is fixed to the bottom end of an extension rod of the air cylinder, and the pressing mechanism is arranged on the mounting frame and used for adjusting the contact area of the pressing plate and the door plate according to the thickness of the door plate. Through the arrangement of the pressing mechanism, the contact area of the pressing plate and the door plate can be flexibly adjusted according to the actual thickness of the door plate, when the door plate is thin, a first piston disc, a first sliding rod, a lifting strip and other components in a liquid storage barrel cooperatively operate, liquid transmits pressure into a fixing barrel through a liquid inlet pipe, a second piston disc and a second sliding rod are pushed to move, and the door plate is fixed. And then an extrusion strip is driven to extrude an arc-shaped block I, so that a pressing plate I is pressed downwards for pressing under the cooperation of a spring III.

The present invention discloses a UAV walking power supply system and a use method for emergency treatment of power transmission channels, comprising a UAV body and a walking power supply device located on the UAV body, through which the UAV body can be driven to walk along the power transmission line while charging, and a wedging force can be generated to lock the power transmission line. The UAV walking power supply system and the use method for emergency treatment of power transmission channels disclosed by the present invention can improve the charging efficiency.

The utility model discloses table type sterilization equipment and belongs to the technical field of sterilization. The utility model discloses table type sterilization equipment, which comprises a sterilization box; the ultraviolet module is arranged in the sterilization box; the rotating shaft is rotationally arranged on the inner wall of the sterilization box and is driven by a motor to rotate; the placing frame is arranged in the sterilization box and is constructed to be in a ring shape; the connecting rod is fixed on the placing frame and is connected with the rotating shaft; and the fixing ropes are arranged on the placing frame and are used for fixing the materials on the placing frame in an up-and-down staggered manner. The table-type sterilization equipment has the beneficial effects that the table-type sterilization equipment which drives a material to rotate through the placing frame, enables ultraviolet rays to irradiate the material in all directions, carries out irradiation sterilization on the material and improves the sterilization efficiency is provided.

The present invention relates to the field of mechanical processing technology, and in particular to an automatic centering clamping mechanism with self-locking. An automatic centering clamping mechanism with self-locking includes a centering clamping machine base, a support plate is welded on the centering clamping machine base, a centering assembly is provided at the outer end of the support plate, and clamping assemblies are provided on both sides of the support plate. The power of this automatic centering clamping mechanism with self-locking comes entirely from the motor. During the clamping process, the force is transmitted to the connecting rod mechanism through the worm gear, and the connecting rod mechanism then transmits the force to the clamping wedge block, which clamps the workpiece through the clamping wedge block. The worm gear itself has good self-locking performance, which serves the purpose of self-locking. The connecting rod mechanism achieves self-locking by passing the dead point and ensures that the clamping force becomes larger and larger, providing sufficient force to ensure that the clamping is in place.

The present invention discloses a UAV device for firefighting in power transmission channels, the device includes a UAV body, a power taking device and a fire extinguishing device located on the UAV body, when the UAV body needs to be charged, the power taking device is hung on the power transmission line, so that the UAV body can move along the power transmission line while charging and can also perform firefighting operations through the fire extinguishing device. Through the UAV device for firefighting in power transmission channels disclosed by the present invention, the UAV body can be charged online when operating in the air.

The utility model discloses a detection device for testing the hardness of a heel of a high-heeled shoe, which comprises a detection device bottom plate, the right side of the top of the detection device bottom plate is fixedly connected with a fixing frame, and a clamping block is arranged in the fixing frame. A high-heeled shoe heel is placed on a rubber pad, a user rotates an operation block, the operation block rotates to drive a screw rod to rotate, the screw rod rotates to drive a square rod to move downwards, the square rod moves downwards to drive a clamping block to press and limit the high-heeled shoe heel downwards, and then the user drives a push rod electrically. The electric push rod drives the detection plate to carry out a compression test on the heels of the high-heeled shoes, then pressure data can be detected through the pressure detection sensor, and then a user can modify the data of the electric push rod and increase the compression force, so that the bottom plate of the detection device achieves the effect of facilitating efficient detection, and an existing mode of carrying out detection by utilizing frequent impact is replaced; therefore, the pressing force can be adjusted, and meanwhile pressing force data can be observed.

A solid crystal pickup and packaging device belongs to the technical field of chip packaging devices. It is characterized by comprising a mold adjustment device (57), a chip separation device (4) and a chip conveying device (5), wherein the chip separation device (4) is arranged on the lower side of the mold adjustment device (57), the chip conveying device (5) is arranged on the upper side of the mold adjustment device (57), a mold frame for clamping the mold (13) is arranged on the mold adjustment device (57), and a detection device is also arranged on the upper side of the mold adjustment device (57). The mold adjustment device of the solid crystal pickup and packaging device can drive the mold to rotate, thereby adjusting the posture of the chip, ensuring that the corresponding positions of the chip and the lead frame are aligned, so that the chip conveying device can accurately convey the chip to the corresponding position of the lead frame, ensuring the accuracy of chip placement, improving the stability of chip solid crystal packaging, and having a high product qualification rate.

The utility model provides a kind of high-efficiency energy-saving stator core using combined silicon steel sheet, it is related to motor parts technical field, including silicon steel sheet, fixed part one, fixed part two;The both sides of the silicon steel sheet are respectively equipped with positioning groove and locating piece A, and locating piece A is movably clamped in the inside of positioning groove, two groups of round holes are equipped on silicon steel sheet, the upper end of fixed part one is equipped with six groups of recess, and eight groups of locating rods are fixedly connected in the inside lower end of fixed part one, the upper end outside of locating rod is equipped with thread, fixed part two is placed in the upside of fixed part one, eight groups of round holes are equipped on fixed part two, by inside thread and the top end outside thread thread connection of locating rod, and damping washer is equipped in the bottom end of inner thread pipe, fixed part one and fixed part two are tightly connected together, form strong compacting force to multilayer silicon steel sheet core, guarantee compact core structure, solve the problem that the stability of the structure of existing traditional combined core may be insufficient after assembly.

The invention discloses a copper foil testing machine and a testing method, the copper foil testing machine comprises a guide block, a first spring and two supports, the two supports are oppositely arranged up and down, the supports can move up and down, the supports are provided with a second driving part, the output end of the second driving part is connected with a pressing plate, the pressing plate can move left and right, each support comprises a table body, and the table body is slidably connected with a second sliding block. The second sliding block can move left and right, the second sliding block and the pressing plate are oppositely arranged left and right, a detection piece can be placed between the second sliding block and the pressing plate, and the pressing plate is close to the second sliding block so that the second sliding block and the pressing plate can tightly press the detection piece. The invention provides a copper foil testing machine and a testing method. Two ends of a copper foil are reliably clamped and are not easy to slip.

The utility model discloses a connecting device for connecting a gear box and a main shaft, which is applied to the field of fan transmission and comprises a first flange, a second flange, a third flange and a fourth flange, the second flange is connected with the other one of the main shaft or the gear box, a second connecting hole is formed in the second flange, and an inner threaded hole is formed in the side, away from the first connecting hole, of the second connecting hole; the hollow pin column penetrates through the first connecting hole and partially extends into the second connecting hole; and the fastening assembly comprises a screw rod and a fastening piece, the screw rod penetrates through the first connecting hole and the second connecting hole and then is connected with the inner threaded hole, and the fastening piece is connected with the end, away from the second flange, of the screw rod so that the first flange can be tightly pressed on the second flange. According to the connecting device disclosed by the utility model, the torque transmission capability and the safety can be effectively improved, or the sizes of the first flange and the second flange can be reduced on the premise of meeting the same torque transmission capability and safety, so that the cost is reduced.

The present invention relates to the technical field of oil and gas cementing tools, and in particular to a floating collar and floating shoe for cementing, which aims to solve the problem of insufficient reverse pressure bearing of existing floating collar and floating shoe. The floating collar and floating shoe for cementing provided by the present invention comprises a one-way valve, which comprises a valve body and a valve core; the valve core comprises a rod body, a rubber sleeve and a spring sheet; the rubber sleeve is sleeved on one end of the rod body and abuts against the valve body to form a seal; the spring sheet is connected to the rod body and is used to apply a thrust to the rubber sleeve to press the rubber sleeve against the valve body. The one-way valve provided by the present invention improves the sealing and pressure bearing capacity by providing a spring sheet for sealing compensation. When the valve core abuts against the valve body to form a seal under the action of the original spring, the rubber sleeve will squeeze the spring sheet due to the compression deformation, thereby deforming the spring sheet and generating elastic force to further press the rubber sleeve and the valve body, increasing the pressing force and limiting the radial contraction of the rubber sleeve, thereby improving its reverse pressure bearing capacity.

The utility model relates to the technical field of tar separation, in particular to a separator. The separator provided by the utility model comprises a tank body, a stirring device and a sealing structure, the stirring device is inserted into the separation cavity of the tank body and comprises a stirring assembly and a driving shaft. The sealing structure is arranged between the tank body and the driving shaft, the sealing structure comprises a connecting piece and a first sealing assembly, the connecting piece is arranged around the driving shaft and connected with the tank body, the connecting piece is provided with a first containing space, and the first sealing assembly is located in the first containing space and arranged around the driving shaft; wherein the first sealing assembly comprises a first sealing piece with preset deformation quantity, the first sealing piece is provided with a cavity and a communicating part communicating with the cavity, the communicating part is used for being connected with an external pressure source, and the external pressure source is configured to inject a pressure medium into the cavity through the communicating part; therefore, the size of the first sealing piece in the radial direction of the driving shaft is adjustable, and the sealing effect is improved.