27 results about "Circular face" patented technology

The invention relates to the technical field of oil and gas exploitation downhole tools, in particular to a multi-stage speed reduction gas anchor capable of being horizontally separated. The problems that an existing gas anchor is low in separation efficiency under the working conditions of a horizontal well and a high gas-liquid ratio, and gas locking of a liquid discharging pump is easily caused are solved. An annular separation cavity is formed between the outer pipe body and the inner insertion pipe. The outer pipe body is provided with an exhaust hole used for exhausting separated gas and a reverse flow guide hole used for guiding in a gas-liquid mixture to be separated. At least one set of speed reduction separation device is arranged in the annular separation cavity and comprises a plurality of half cone bodies which are sequentially arranged in the fluid direction, the large circular face end of each half cone body is fixed to the inner wall of the outer pipe body, and the small circular face end of each half cone body is cut to form a first semicircular arc and a second semicircular arc which are different in axial distance so as to form an asymmetric fluid channel. Efficient gas-liquid separation is achieved through forced fluid deceleration and disturbance, dependence on gravity is avoided, pump gas locking can be effectively prevented, and the pump efficiency is improved.

A cathode roller two-end winding double-layer copper wire reinforced conductive structure comprises a cathode roller core, a roller, an inner side copper wire layer and an outer side copper wire layer. The roller is sleeved outside the cathode roller core; the roller comprises an outer roller body, an inner side plate and an outer side plate, and two annular grooves are formed in the outer sides of the two ends of the outer roller body in the width direction. The inner side plate is fixedly packaged on the inner side of the end part of the outer cylinder body, the outer side plate is arranged on the outer side of the inner side plate in an attached manner and is fixedly connected with the end part of the outer cylinder body, and meanwhile, the outer circular surface of the outer side plate extends to the outer side of the outer circular surface of the outer cylinder body; the inner side copper wire layer is connected in the annular groove in an attached mode, and the end of the inner side copper wire layer is electrically connected with the outer side plate. The outer side copper wire layer is connected to the outer circular face of the outer cylinder in an attached mode, and the end of the outer side copper wire layer is electrically connected with the inner side copper wire layer and the outer side plate at the same time. According to the conductive structure, the two layers of copper wires are wound at the two ends of the cathode roller, so that the conductivity can be remarkably improved, the stability of the structure can be effectively enhanced, the copper foil quality can be effectively ensured, and the production efficiency can be improved.

The invention relates to a valve closing member (12) for cooperation with a valve seat (14), comprising a body (16) with a front circular face (16.5) forming a central protrusion (16.2) along a longitudinal axis of the body, a seal (18) forming a ring fitted on the front circular face (16.5) and surrounding the central protrusion (16.2), and a retainer (20) forming a ring surrounding the seal (18) and attached to the body (16) for retaining the seal (18) on the body (16), wherein the seal (18) shows a radially inner surface (18.2) contacting a radially outer surface (16.4) of the central protrusion (16.2), both the radially inner surface (18.2) and the radially outer surface (16.4) being cylindrical, the radially outer surface (16.4) showing at least one circular groove (16.3) into which the seal is radially pressed by the retainer (20).

The utility model relates to a composite sealing valve seat with an elastic automatic compensation function. The composite sealing valve seat comprises a base, a sealing seat and a sealing ring, the sealing device is characterized in that the sealing ring has an inverted trapezoidal section structure and is mounted on a cylindrical surface between a first step and a second step on the outer circular surface of the base; an elastic compensation device composed of a cylindrical spring and a pressing ring is arranged in a second spring cavity on the left side of the sealing ring, when the sealing ring is abraded in the frequent moving process, the cylindrical spring pushes the pressing ring, the inclined face of the pressing ring is made to tightly wedge the sealing ring, the sealing ring is expanded in the radial direction, and abrasion of the outer circle face of the sealing ring is automatically compensated. Reliable sealing between the valve seat and the valve body channel is achieved, and the sealing performance between the valve seat and the valve body is improved.

The utility model relates to the technical field of communication optical cables, in particular to a skeleton type optical fiber cable, which comprises a skeleton with a reinforcing core in the center, and open accommodating grooves are uniformly distributed on the circumference of the skeleton. The plurality of optical fiber core bodies are arranged in the accommodating grooves in a one-to-one correspondence manner; wherein a first protrusion or a second protrusion is formed between every two adjacent containing grooves, the first protrusions and the second protrusions are distributed in a staggered mode, the peripheral faces of the first protrusions and the peripheral faces of the second protrusions are located on the same circular face, and a plurality of thin-wall bodies extending outwards are fixed to the first protrusions at intervals in the axial direction. A limiting clamping groove is formed in the second protrusion, and the outer end of the thin-wall body is movably clamped in the limiting clamping groove after the thin-wall body is bent. According to the utility model, the problems of signal attenuation and even communication interruption caused by the fact that the optical fiber ribbon is separated, bent or fractured after the outer protective layer of the skeleton groove structure of the existing optical cable is damaged can be effectively solved.

The utility model provides a radioactive sampling manipulator for a nuclear waste barrel, and belongs to the technical field of radioactive detection sampling. The radioactive sampling manipulator for the nuclear waste barrel comprises a mechanical arm, a connecting base installed at the front end of the mechanical arm and a sampling head arranged on the connecting base and used for fixing sampling paper, and the sampling head comprises a base plate, a paper supporting part fixedly arranged on the front side face of the base plate and clamping plates arranged on the two sides of the paper supporting part. The two clamping plates are matched with the two sides of the paper support part through relative movement to clamp the two ends of the sampling paper, and the paper support part is provided with a round face located at the front end and first planes arranged at the two ends of the round face. The sampling device has the advantages of high sampling automation degree, high efficiency and high sampling paper utilization rate in radioactive detection of the nuclear waste barrel.

The application belongs to the technical field of additive manufacturing, and particularly relates to an aircraft cylinder segment and an additive manufacturing method thereof, which comprises a cylinder body, the cylinder body is formed by the cooperation of one or both of an end face and an outer circular face, the end face or the outer circular face comprises a framework and a sandwich layer, the sandwich layer wraps the framework, and the framework and the sandwich layer are integrally manufactured by an additive manufacturing device. The aircraft cylinder segment and the additive manufacturing method thereof can fully maintain the overall strength and integral forming of the cylinder segment by arranging the framework, the sandwich layer can not only realize the light weight of the cylinder segment, but also can inject inert gas in the space of the sandwich layer, on the one hand, the inert characteristics of the inert gas can realize the heat insulation effect, and on the other hand, the inert gas can also realize the effect of shock absorption and noise reduction, so that the problem of the influence of vibration or noise on the internal electronic components of the aircraft can be prevented.

The invention discloses an endoscope which comprises a handle, a side mirror mechanism and a driving mechanism. A penetrating channel is formed in the handle, the side mirror mechanism is partially installed in the penetrating channel in a sliding mode, the cross section of the side mirror mechanism is a circular face, the side mirror mechanism comprises at least two side mirror assemblies, the cross section of each side mirror assembly is a fan-shaped face, and the adjacent side mirror assemblies are connected in a sliding mode through a sliding structure. The fan-shaped faces of the side mirror assemblies are spliced to form the circular face of the side mirror mechanism, the diameter of the side mirror mechanism composed of the side mirror assemblies is the same as that of a traditional endoscope, discomfort of a patient cannot be increased, and the smoothness of endoscope insertion operation cannot be affected. The driving mechanism is connected with the side mirror assemblies, the driving mechanism drives at least one side mirror assembly to move relative to the other side mirror assemblies along the sliding structure, so that different side mirror assemblies move to different observation planes, the different side mirror assemblies carry out imaging synchronously, and medical staff can know the collapse and blocking conditions of the different observation planes at the same time.

The utility model discloses an I-shaped pile which comprises a pile body, V-shaped empty grooves are formed in the two sides of the pile body, a protruding block and a groove are arranged at the ends of the V-shaped empty grooves in the two sides respectively, the side face, away from the V-shaped empty grooves, of the protruding block is a first arc face, and the side face, connected with the V-shaped empty grooves, of the groove is a second arc face. The first arc surface and the second arc surface are matched with each other, contact surfaces are arranged on one side of the protruding block and one side of the groove, a deviation rectifying chamfer is arranged on one side of the bottom end of the pile body, and when the pile body is inserted into soil, the deviation rectifying chamfer on one side of the bottom end of the pile body and the soil are extruded to prevent the bottom end of the pile body from inclining. And the convex blocks and the grooves are always kept to be attached, so that a gap is reduced, soil in a cavity formed by the two V-shaped empty grooves between the two pile bodies is prevented from being eroded by water flow to be lost, and the overall protection effect of the bank protection wall is improved.

The utility model relates to the technical field of spoon bending, in particular to a stainless steel spoon machining and bending treatment device which comprises a rectangular bottom plate and a machining device, the machining device is arranged on the upper surface of the rectangular bottom plate, a rectangular mounting groove is formed in the upper surface of the machining device, and a rectangular positioning block is arranged on the bottom surface in the rectangular mounting groove in a penetrating mode. An arc-shaped machining groove is further formed in the upper surface of the rectangular positioning block, trapezoidal blocks are slidably connected to the arc faces in the rectangular mounting groove, guide frames are arranged on the two sides of each trapezoidal block, guide rods are fixedly connected to the vertical faces of the two sides of each trapezoidal block, and the circular faces, away from the trapezoidal blocks, of the guide rods are located at the inner rings of the guide frames; and the vertical surface of the guide frame is fixedly connected with the mounting plate, so that the phenomenon that the corners are often unqualified or damaged during manual bending can be avoided, and the qualification rate is increased.

The utility model discloses an LED down lamp capable of dissipating heat and removing dust, and relates to the technical field of LED down lamps, the LED down lamp comprises a shell, the inner wall of the shell is provided with a cavity, the upper end of the inner surface of the cavity is fixedly provided with a silent fan, and the inner surface of the shell is fixedly provided with a dust collecting net; and the same dust removal mechanism is arranged in the cavity and in the inner wall of the inner circular surface of the shell. Compared with an existing common LED down lamp, the LED down lamp capable of dissipating heat and removing dust can effectively conduct cooling and heat dissipation on the whole down lamp, when hot air is blown out, dust on the surface of a dust collecting net and the surface of an LED lamp can be blown off, a certain dust removing effect is achieved, when a silent fan works, fresh air can blow downwards to enable a turbofan to rotate, and the heat dissipation effect is achieved. The whole movable barrel is driven to rotate through the transverse frame, at the moment, the brush can be attached to the surface of the dust collecting net to brush, a large amount of attached dust is wiped away, the dust is blown off along with exhausted air, the effective dust removal effect is achieved, and the dust can be fully removed.

The utility model belongs to the technical field of construction dust fall, and provides a centrifugal spraying device for a construction site, the centrifugal spraying device comprises a barrel and an axial fan arranged in the barrel, a shaft pipe penetrates through the barrel from back to front along the central axis, the rear end of the shaft pipe is connected with a high-pressure water pipe, and the front end of the shaft pipe is rotatably connected with a spraying pipe communicated with the shaft pipe; the spray pipe divides the front end face of the barrel into two semi-circular faces all the time, and nozzles are arranged at the two ends of the spray pipe and face the different semi-circular faces respectively. The problem that a spraying device blocks a nozzle is solved, the spraying area can be enlarged, and the spraying effect is improved.

The invention relates to the field of road edge stone production, and discloses an energy-saving type compression molding device for road edge stone production, which comprises a mold assembly and a compression molding component, the mold assembly comprises a fixed barrel shell, a rotating seat is sleeved in the fixed barrel shell, the end face of the rotating seat is provided with a mounting hole, and a steel mold is arranged in the mounting hole; four mounting holes are formed in the circumferential direction of the rotating seat in an array mode, at the beginning, the positions of the four mounting holes are named as a first position, a second position, a third position and a fourth position correspondingly, inner holes are coaxially formed in the lower closed end of the fixed barrel shell and the end face of the rotating seat in a penetrating mode correspondingly, and the pressing forming component comprises a main shaft column coaxially located in the inner holes; the bottom of the main shaft column is located below the fixed barrel shell and provided with a convex lug base, the convex lug base is driven by a hydraulic cylinder arranged at the lower closed end of the fixed barrel shell to move, and a vibration assembly and a pressing assembly are arranged on the outer circle face of the main shaft column.

The utility model discloses a blow-down ball valve, and belongs to the technical field of valves. The valve seat is connected with the inner wall of the valve body, the ball body abuts against the valve seat to form sealing fit, one end of the valve rod is connected with the ball body, the other end of the valve rod extends out of the valve seat, a first spring is arranged on the end face, facing the ball body, of the valve seat, and a sealing ring abuts against the portion between the first spring and the ball body. A limiting sliding ring which is in sliding connection with the sealing ring and limits the sealing ring is arranged on the inner circle face of the sealing ring, a sliding seat which is in sliding connection with the limiting sliding ring is arranged at the end, away from the ball body, of the limiting sliding ring, the sliding seat is in sliding connection with the inner wall of the valve body, and a second spring is further connected between the sliding seat and the valve body. According to the technical scheme, the ball body abrasion phenomenon caused by the fact that impurities enter the sealing face of the valve seat and the ball body in the long-term use process is improved, and the service life of the ball body is prolonged.

The utility model discloses a detachable light source structure and its modeling lamp decoration, detachable light source structure includes the circular bottom cover and circular face cover through the screw fixed, the top surface middle part of circular bottom cover has the convex ring, and the edge of circular bottom cover has a plurality of lower semicircle convex post, and the edge of circular face cover has a plurality of upper semicircle convex post, and lower semicircle convex post and upper semicircle convex post combination into the whole circle, and U shape positioning clamping groove and n shape clamping groove recess combination into the complete transparent pipe clamping groove, be provided with circular ring circuit board between circular bottom cover and circular face cover, be provided with a plurality of lamp pearl on circular ring circuit board, its modeling lamp decoration includes a plurality of decorative parts and above detachable light source structure, the utility model discloses the structure is reasonably arranged, can effectively realize the assembly combination into different modeling, has promoted its application range, and the assembly combination is relatively convenient, is favorable for promoting the efficiency of assembly, also can reduce packing and transportation volume, reduce packing and transportation cost.

A rubber and plastic seal axial friction force and circumferential friction torque testing device under the under-pressure working condition comprises a torque input applying support and a torque output testing support, a sealing cavity is erected between the torque input applying support and the torque output testing support, and the two ends of the sealing cavity are connected with an input end circular face and an output end circular face respectively; an input end to-be-tested sealing assembly is arranged inside the input end circular surface, and an output end to-be-tested sealing assembly is connected inside the output end circular surface; a sensor seat is connected between the input end sealing assembly and the output end sealing assembly; torque and axial thrust input by the input end circular face can be transmitted to the output end sealing assembly to be tested from the input end sealing assembly to be tested through the sensor base, and torque is measured through the first force sensor and the second force sensor on the input end circular face and the output end circular face. According to the device, the torque is input in an air pressure driving mode, the problem that the force of torque input in a traditional mechanical mode is unstable is solved, and more accurate torque input and test can be achieved.

The invention relates to a buckling and pressing die petal which is of a fan-shaped structure, the outer ring face is a driving face, a buckling and pressing face is arranged on the inner ring side, and the buckling and pressing face is in a step shape and comprises a first-stage buckling and pressing face body and a second-stage buckling and pressing face body. The first-stage buckling surface forms a limiting structure, and the upper end surface forms a limiting surface; the second-stage buckling face is provided with buckling teeth, the upper portions of the buckling teeth form receding faces, the driving face is an outer circular face of a boss-shaped structure protruding backwards, clamping faces are formed on the two side walls of the driving face, and a limiting boss is arranged on the upper portion of the driving face. According to the buckling and pressing die petal and the shock absorber buckling and pressing tool, uniform correction and positioning are achieved in the circumferential direction.

The invention relates to the field of electrostatic motor equipment, in particular to a high-power electrostatic driving motor based on a blade close arrangement technology, which comprises a rotor module, a stator module and an output module, and is characterized in that the stator module supports the rotor module to drive the output module to rotate so as to output torque; the rotor module comprises rotor blades and a rotor frame, the rotor blades extend in the radial direction of the rotating circular face of the motor and are evenly distributed in the circumferential direction, the rotor blades are made of conductive materials, and the rotor frame is used for fixing and supporting the rotor blades to rotate. The rotor blades are arranged in the radial direction of the rotating round face so as to adjust the arrangement mode of the rotor blades, the rotor blades extend in the radial direction of the rotating round face, and the electrified area of a single blade is obviously increased; the number of the blades is only limited by the thickness of the blades and gaps between the adjacent blades, high-density arrangement is achieved, the total electrified area is increased along with the number of the blades, electrostatic force borne by each blade is higher, and the total driving torque is larger.

The invention provides a steel strip coil bearing frame and an annealing material frame. The steel strip coil bearing frame comprises a center cylinder, a plurality of spokes and an outer circular ring, the spokes are connected to the periphery of the center cylinder in a radial mode, the spokes are connected through the outer circular ring, the circular face defined by the outer circular ring is equally divided into n fan-shaped areas through the spokes, in the fan-shaped areas, the n-k fan-shaped areas are connected through arc ribs to form a plurality of connecting areas, and the connecting areas are connected through the arc ribs. The two ends of each connecting area are each provided with a hollow area, every two adjacent connecting areas are separated through one hollow area, k is the number of the hollow areas, and k is larger than or equal to 3; the upper surfaces of the spokes, the upper surface of the outer circular ring and the upper surfaces of the arc ribs are flush to form a bearing face. The atmosphere is uniform in the annealing process, the hardness is uniform without chromatic aberration after annealing, and the service life of the annealing rack is greatly prolonged while the annealing quality of the steel strip coil is improved.

The utility model discloses a water injection pipe for a scrubber, which comprises a pipe body capable of being inserted into a water injection port of a water tank; the pipe sleeve is connected with one end of the pipe body in a sleeved mode, the pipe sleeve is provided with a first outer circular face, and the first outer circular face is matched with a water injection opening of a water tank; the end cover is connected with the end, away from the pipe body, of the pipe sleeve, an insertion opening is formed in the end face of the end cover, and the insertion opening is used for being connected with a water outlet of a faucet in an inserted mode; the lap joint surface extends along the periphery of the first outer circle surface, the lap joint surface is arranged on the pipe sleeve or the end cover, and the lap joint surface is used for being in lap joint with the edge of a water injection opening of the water tank so as to prevent the water injection pipe from falling into the water tank. The water injection pipe can be arranged at the water injection port of the water tank, and the water injection pipe can be in butt joint with a faucet during water injection, so that the water injection operation is more convenient.

The utility model belongs to the field of design and processing of products, and particularly relates to a guiding and positioning device for press fitting of a tiny bush and a thin-wall shell. The positioning device comprises a bushing guide pin and a press fitting body; the bushing guide pin comprises a guide conical section, a positioning cylindrical section, a connecting thread section and a straight slot; a linear groove used for disassembling the device after assembly is completed is formed in the guide conical section; the outer surface of the guide conical section is a guide conical surface, and the outer surface of the positioning cylindrical section is a positioning cylindrical surface; a connecting thread of the connecting thread section is used for placing the bushing and is connected with the press-fitting body; the press-fitting body is of a cylindrical structure, a connecting threaded hole is formed in the lower end, and two flat faces are symmetrically cut downwards from the upper end. The connecting threaded hole is matched with the connecting thread, and the outer circular face and the flat face of the press-fitting body are used for clamping and preventing rotation of a wrench when the device is disassembled. The device solves the assembly problems that the tiny bushings are difficult to align and put into the mounting holes and are not pressed rightly, and is simple, convenient and quick to process, easy to operate and high in reliability.

The invention relates to the technical field of pipeline machining, in particular to an inner circle surface treatment device for pipeline elbow machining, which comprises a clamping base, a mechanical arm and an elbow, a connecting rod is arranged on the mechanical arm, a plurality of rollers movably connected with the inner side of the elbow are arranged on the outer side of the connecting rod, and an inner diameter adjusting mechanism is arranged on the outer side of the connecting rod. According to the inner circle face processing device for pipeline elbow machining, the arranged rolling wheels are shrunk firstly, after the rolling wheels enter an elbow, limiting of the rolling wheels is loosened, and at the moment, the rolling wheels are shrunk, and the inner diameter of the elbow is adjusted; the inner diameter adjusting mechanism can immediately drive the rolling wheel to extend towards the inner side of the bent pipe until the rolling wheel is tightly attached to the inner wall of the bent pipe, accurate adjustment of the matched grinding inner diameter is completed, it is guaranteed that force is evenly transmitted in the grinding process, the device is effectively matched with various pipeline elbows with different inner diameters, and scene limitation is reduced.

The utility model relates to the technical field of electromagnetic brake shell, concretely is a motor with electromagnetic brake module. The utility model discloses a motor with electromagnetic brake module, including motor main part, the axial one end in motor main part is equipped with electromagnetic brake module, is equipped with the cover body for protecting electromagnetic brake module on this end, the cover body is straight cylinder shape structure, the radial opening is seted up to the one end of the extension of the cover body radial relative, the opening both ends of the opening close radial of cover body outer circular face are symmetrically equipped with the assembling part, the bolt is equipped between two assembling parts, and the mutual close of two assembling parts can be made between the bolt to make the cover body tighten. The utility model has the advantage that can lock the motor shell fast to make it to the isolation closed of electromagnetic brake.

The utility model discloses a heat tracing device for fuel gas, which belongs to the technical field of chemical equipment and comprises a heat tracing barrel, two communication components are arranged on the periphery of the heat tracing barrel and are respectively communicated with the peripheries of the upper half part and the lower half part of the heat tracing barrel, and the two communication components are communicated with the heat tracing barrel. The two communicating assemblies are both communicated with two external heat preservation shells of storage tanks for storing fuel gas; the partition circular plates are fixedly connected to the inner wall of the heat tracing barrel in parallel, and a plurality of heating pipes used for conducting partition heat tracing heating are installed at the top ends of the partition circular plates; and the rotating motor is installed on the circular face of the heat tracing barrel, an output shaft of the rotating motor penetrates through the heat tracing barrel and the partition circular plate to be connected with a rotating rod, the periphery of the rotating rod is connected with a plurality of uniform stirring plates corresponding to the partition circular plate in position, and a circular channel used for liquid leakage is formed in the top end of the partition circular plate. According to the heat tracing device for the fuel gas, water liquid can be prevented from being directly pumped out after being pumped in, the heating progress time is prolonged, and the heating effect is guaranteed.

The present application relates to the technical field of equipment installation and maintenance, and specifically provides a positioning and alignment method, system, device and storage medium for a rotating drum track and base, comprising: preassembling the track and base from both ends of the transmission cylinder of the rotating drum; selecting the side end faces of the drive side transmission cylinder and the non-drive side transmission cylinder as the axial positioning reference to complete the axial positioning and alignment of the track and base; selecting the outer circular faces of the drive side transmission cylinder and the non-drive side transmission cylinder as the radial positioning reference, and adjusting the radial positions of the drive side track and the non-drive side track and their corresponding bases according to the distances from the outer circular faces of the drive side track and the non-drive side track to the outer circular faces of the corresponding transmission cylinders to complete the radial positioning and alignment of the track and base. The present application realizes accurate positioning and alignment of the overall replacement and installation of the track and base, ensures the installation accuracy, and facilitates subsequent stable operation.

The invention discloses raw material mixing equipment and a raw material mixing method for preparing dialysis oil displacement fracturing fluid, and relates to the technical field of material mixing. The raw material mixing equipment for preparing the dialysis oil displacement fracturing fluid comprises a mixing tank and a material mixing mechanism, a reagent feeding mechanism is installed at the edge of the top of the mixing tank, and the material mixing mechanism comprises a servo motor, a round pipe and a gradual change pressing block; fork-shaped teeth are slidably mounted at the position, close to the gradual change pressing block, in the circular pipe, a stirrer is mounted in the middle of the circular pipe, material turning blades are fixedly mounted at the bottom end of the circular pipe, supporting elastic strips are fixedly mounted between the bent positions of the surfaces of the fork-shaped teeth and the outer circular face of the circular pipe, and the stirrer comprises a disc and a rotating base; a push-pull rod is hinged between the bottom of the disc and the side of the end face of the rotating base, and rhombic blades are detachably and fixedly mounted at the end, away from the push-pull rod, of the rotating base, so that the purpose of adjustment is achieved, the angle can be adjusted, mixing dead angles and layering are avoided, mixing is uniform, and safety and reliability are achieved.

The utility model discloses a filling barrel cap screwing device which comprises a first driving device and a second driving device which are vertically arranged, the output end of the first driving device is provided with a mounting plate, the second driving device is arranged on the upper end face of the mounting plate, and the output end of the second driving device is connected with a cap pressing assembly in a meshed mode. The cover pressing assembly comprises a fixing piece connected with the mounting plate and a cover body capable of being clamped to the outer circular face of the barrel cover, so that the first driving device can drive the second driving device and the cover body to reciprocate up and down through the mounting plate, the second driving device can drive the cover body to conduct cover screwing operation, and therefore the sealing effect is guaranteed, the packaging efficiency is improved, and the packaging cost is reduced. The utility model belongs to the technical field of filling.