53results about How to "Open and close" patented technology

The invention relates to an AI intelligent gas valve control method and system and an AI intelligent gas valve, and relates to the technical field of gas valves.The method comprises the steps that when the intelligent gas valve receives preset triggering information, image detection information of a gas stove is obtained; selecting an image corresponding to a preset switch feature based on the image detection information, and taking the selected image as a switch image; inputting the switch image into a preset angle model to output a rotation angle; inputting the rotation angle into a preset gas database to match the actual gas output of the intelligent gas valve; the output current of the intelligent gas valve is determined according to the reference gas inflow; and outputting the output current to a control device preset in the intelligent gas valve to control opening and closing of the intelligent gas valve. The gas stove has the effect of improving the safety of gas use.

The invention provides a cover plate opening and closing device, and the device comprises at least two fixed shafts which are arranged in a cable trench in the width direction of the cable trench, and the fixed shafts extend in the length direction of the cable trench; the jacking rods extend in the width direction of the cable trench, the middles of the at least two jacking rods are hinged to the at least two fixing shafts in a one-to-one correspondence mode, the first ends of the jacking rods are provided with cover plate matching parts, and the connecting rod extends in the width direction of the cable trench and is hinged to the second ends of the at least two jacking rods. When the jacking assembly is in the storage state, the cover plate matching part extends upwards out of the cable trench, and when the jacking assembly is in the storage state, the cover plate matching part is downwards stored in the cable trench; the electric driving piece is in driving connection with the connecting rod so as to drive the jacking assembly to be switched between the jacking state and the storage state. Through the technical scheme provided by the invention, the problem that a large amount of manpower and time are consumed when the cover plate needs to be frequently opened and closed in the prior art can be solved.

The invention provides a biological tissue paraffin embedding and slicing all-in-one machine, and relates to the technical field of embedding and slicing, the biological tissue paraffin embedding and slicing all-in-one machine comprises a base, the base is provided with an embedding mechanism facilitating paraffin embedding of tissues, a fixing mechanism facilitating slicing of paraffin blocks, and a cutting mechanism facilitating slicing of the paraffin blocks; the embedding mechanism comprises a transmission frame, a metal box, a movable rod and a liquid storage tank, the fixing mechanism comprises an adjusting frame and an adjusting plate, and the cutting mechanism comprises a mounting block, a push plate and a slicing knife. According to the device, the adjusting plate and the fixing frame which can work alternately are arranged to be matched with each other, so that the processes of loading, slicing, disassembling and the like are carried out in parallel, and the time waste caused by the fact that the next process can be carried out after one process is completed in the existing mode is avoided; for a laboratory or a production environment needing a large number of slices and loading slices, the overall operation time is greatly shortened, and the slicing efficiency is improved.

The grasping forceps comprise a forceps body, two sets of forceps claws capable of being opened and closed are arranged at one end of the forceps body in a mirroring mode, the forceps claws are connected with a sliding rod through a first adjusting assembly, the sliding rod is installed in an inner cavity of the forceps body in a sliding mode, one end of the sliding rod penetrates through the forceps body, and a first spring is arranged outside the forceps body in a sleeved mode. One end of the sliding rod close to the first spring is connected with a first supporting piece, the first supporting piece is connected with a second supporting piece installed at one end of the pincer body in a sliding mode, and the first supporting piece can be locked through a locking assembly, so that the first supporting piece can slide along the second supporting piece by unlocking the first supporting piece through the locking assembly; when the first spring pushes the first supporting piece to be away from the second supporting piece, the sliding rod can be pulled to move to be matched with the first adjusting assembly to achieve opening of the gripper arms, on the contrary, closing of the gripper arms can be achieved, opening and closing of the gripper arms can be locked, the gripping pliers do not need to be held all the time, more labor is saved, and use is more convenient.

The invention provides a cover plate opening and closing device. The cover plate opening and closing device comprises at least two fixing shafts and a cover plate, wherein the fixing shafts can be connected with a cable trench; the at least two jacking rods extend in the width direction of the cable trench, the middles of the at least two jacking rods are hinged to the at least two fixing shafts respectively, the first ends of the jacking rods are provided with cover plate matching parts, and the connecting rods are hinged to the second ends of the at least two jacking rods respectively. When the jacking assembly is in the storage state, the cover plate matching part can upwards extend out of the cable trench, and when the jacking assembly is in the storage state, the cover plate matching part can be downwards stored in the cable trench; the mounting shaft can be connected with the cable trench, the middle of the handle part is hinged to the mounting shaft, the first end of the handle part extends out of the cable trench, and the second end of the handle part is in driving connection with the connecting rod. Through the technical scheme provided by the invention, the problems that the cable trench cover plate is difficult to open and close and the safety is relatively low when the weight of the cable trench cover plate is relatively heavy in the prior art can be solved.

The invention discloses a one-trip multi-layer gravel filling pipe column sliding sleeve opening and closing tool and a filling pipe column assembly, and belongs to the technical field of oil exploitation equipment. The multi-layer gravel filling pipe column sliding sleeve opening and closing tool comprises a first connector, a spacer sleeve, a locking piece, a spring and a second connector. A locking groove is formed in the circumferential side face of the first connector, the first connector is sleeved with the spacer sleeve, the first connector is sleeved with the second connector, and the spacer sleeve and the second connector extend to cover notch areas on the two opposite sides of the locking groove respectively. The locking piece is arranged in the locking groove and can slide in the depth direction of the locking groove, and the spring is connected between the groove bottom of the locking groove and the locking piece in an abutting mode. A first guide inclined surface and a second guide inclined surface which are inclined towards the middle part are arranged on two axial side surfaces of the locking piece; and a clamping groove matched with the boss on the sliding sleeve is arranged between the first guide inclined surface and the second guide inclined surface. According to the multi-layer gravel filling pipe column sliding sleeve opening and closing tool and the filling pipe column assembly, the efficiency of sliding sleeve opening and closing operation can be improved.

The utility model relates to a large-caliber high-pressure anti-leakage quick cut-off valve with an abrasion compensation function, which comprises a valve body, an elastic valve core, a sealing body and a driving mechanism, the valve body is of a T-shaped structure, the valve body is further provided with a liquid inlet communicated with the inside of the valve body, and the liquid inlet is positioned between two ends of the valve body; the sealing body is fixedly installed at the lower end opening of the valve body, the valve element is installed in the valve body, and the driving mechanism is installed at the upper end opening of the valve body and connected with the valve element. The valve is simple in structure and reasonable in design, reciprocating motion of the valve element can be achieved, abrasion of the sealing face of the valve is small in the closing and opening process of the valve, the valve element sealing body is composed of the plane disc and the cone frustum which are assembled into a whole through the sealing elastic material, and the cone frustum and the plane disc have certain relative displacement freedom. The valve element sealing face and the valve body sealing face are sealed in a combined mode through a disc face and are sealed in a tangent mode through a valve element cone frustum and a valve body cone frustum hole, two-stage sealing is achieved, and the sealing effect is enhanced.

The invention belongs to the technical field of hydraulic engineering, and discloses a hydraulic engineering gate structure which comprises a valve body, a water outlet hole is formed in the top of the valve body, a first flange is fixedly mounted at the top of the water outlet hole, and a water inlet pipe is fixedly mounted on the right side of the valve body. Through the arrangement of the filter cartridge, when the water outlet hole is opened, water flow can lift and rotate the filter cartridge, then the water flow enters the filter cartridge to be filtered, through the modular design of the filter bin and the valve body, the filter bin can be easily disassembled, the filter cartridge is convenient to clean, and compared with a traditional device, the filter cartridge is convenient to clean. According to the device, water flow can be filtered and then drained, the quality of the water flow is effectively guaranteed, and the filter cartridge rotates slightly during drainage every time, so that the filter surface of the filter cartridge can be fully applied, the filter cartridge is prevented from being blocked, and the cleaning burden of workers is relieved.

The utility model discloses a drive module includes two cylinders of symmetrical setting at cylinder cover both sides, two cylinders can guarantee that cylinder cover stress is even, and the lift movement of cylinder cover is driven through cylinder, and the opening and closing of cylinder cover can be realized without manual force, and the labor intensity is reduced, the stability of the lift process of cylinder cover can be guaranteed through the cooperation of the guide column and the guide sleeve of guide module, avoids the tilting or the collision of cylinder cover because of uneven stress and leads to the damage of equipment, the sealing module can guarantee that cylinder cover and knead cylinder body's sealing fit, prevents material leakage, and the adaptive adjustment module can dynamically adjust the lift speed of cylinder cover according to the pressure in knead cylinder body, when the pressure in knead cylinder body is too big, the lift speed of cylinder cover reduces, avoids the material splashing under high pressure working condition, the intelligent monitoring module can real -time monitoring equipment state, and early warning failure avoids the accident, and the quick cleaning module can carry out the automatic cleaning to the material of remaining in the inside of cylinder cover, reduces manual operation.

The utility model relates to a cooking device. The cooking device comprises a box body; a cooking cavity is formed in the inner container, and a smoke outlet is formed in the outer wall of the inner container; the smoke exhaust air duct is communicated with the smoke exhaust port and the outside of the box body; an on-off opening is formed in the smoke exhaust air duct; the smoke extraction fan is used for providing wind power, extracting oil smoke in the cooking cavity through the smoke exhaust port and exhausting the oil smoke out of the box body; the on-off control assembly is arranged in the smoke exhaust air duct and can automatically block the on-off opening so as to close the smoke exhaust air duct, and the sealing performance of the smoke exhaust air duct is improved; the output end of the on-off control motor can abut against the on-off control assembly to drive the on-off control assembly to rotate and open the smoke exhaust air duct, then the smoke exhaust air duct can be opened and closed, the on-off control motor only needs to be responsible for opening the on-off control assembly, the reliability of the motor is improved, and the service life of the motor is prolonged. Therefore, the reliability of on-off control of the smoke exhaust air duct can be effectively improved, and the sealing performance of on-off control of the smoke exhaust air duct is improved.

The ultralow-energy-consumption unit curtain wall comprises a wall body, an air blower is installed in a rotary cylinder, a shielding plate is slidably connected to the outer side of the wall body, and a control component is arranged on the inner side of the wall body; a shielding shell is installed at the outer end of the wall body, and a solar panel is rotationally installed on the sliding connection base. The outer side of the wall body is rotationally connected with a rotary sleeve, a linkage piece is arranged on the inner side of the shielding shell, and a transmission piece and a guide piece are arranged on the inner side of the shielding shell. According to the invention, firstly, the solar panel can be hidden at the inner side of the shielding shell, so that the solar panel can be hidden and stored, the solar panel can be put into use for a long time, secondly, a user can conveniently carry out rotation control on the rotating cylinder at a relatively high position from the ground through the control component, and the opening and closing of the air inlet at the outer side of the rotating cylinder are realized; and meanwhile, the folding or unfolding of the solar panel can be synchronously controlled according to the opening and closing conditions of the air inlet, so that the purpose of facilitating the operation of a user is achieved.

The utility model discloses a mounting structure of a driving device and a cooking utensil, the mounting structure comprises a cover plate, the cover plate is provided with a backflow hole and an air hole which are vertically through, and the connecting line of the projection of the center of the backflow hole on the horizontal plane along the vertical direction and the projection of the center of the air hole on the horizontal plane along the vertical direction is not overlapped with or parallel to the projection of a first direction on the horizontal plane; the backflow assembly is vertically and movably arranged on the backflow hole; the gravity ball is transversely and movably arranged on the air hole in the first direction; the reinforcing frame is arranged on the cover plate and extends in the first direction; the driving device is transversely and movably arranged in the reinforcing frame in the first direction and extends in the first direction, the driving device comprises a first push rod and a second push rod, the first push rod corresponds to the backflow assembly and extends in the first direction, the first push rod is connected to the top of the backflow assembly, and the second push rod corresponds to the gravity ball and extends in the first direction; the second push rod is located on the side of the gravity ball in the first direction. The driving device can accurately drive to open and close the backflow hole and the air hole.

The utility model relates to the technical field of water cups, in particular to a pressing uncovering type water cup. The cup comprises a cup body and a cup cover which is inserted into an opening of the cup body and is in sealing fit with the cup body, an inner flange is arranged on the inner periphery of the opening of the cup body, and a clamping block which can elastically slide outwards and is in clamping fit with the inner flange is arranged on the cup cover in a sliding mode. The cup cover is coaxially matched with a rotating seat in a rotating mode, a wedge block matched with the clamping block is arranged on the rotating seat, and when the rotating seat rotates, the wedge block extrudes the clamping block to slide towards the inner side for unlocking; one clamping block and one wedge block serve as a locking component, and a plurality of sets of locking components are evenly distributed around the axis of the rotating base in the circumferential direction; the sealing position between the cup cover and the cup body is located below the locking component. According to the utility model, the cup cover is convenient to open and close, and a good locking effect between the cup cover and the cup body can be ensured.

The one-inlet multi-outlet switching stop valve comprises a valve body, a valve cover and a valve seat, the valve cover and the valve seat are assembled at the two ends of the valve body respectively, the valve cover is provided with a water inlet pipeline, a plurality of water outlet pipelines are arranged on the periphery of the valve body, a rotatable valve rod is further arranged in the valve body, a connecting cavity is formed in the valve body, and the connecting cavity is communicated with the valve cover. The water inlet pipeline is communicated with any water outlet pipeline through the valve body, a motor is assembled on the valve seat, the driving end of the motor is connected with the valve seat, and the motor drives the valve seat to rotate. The valve rod is rotatably arranged in the valve body, the water outlet pipelines are arranged on the outer edge of the valve body, the water inlet pipeline is arranged on the valve cover at one end of the valve body and matched with the connecting cavity in the valve rod, and the water inlet pipeline is communicated with the connecting cavity of the valve rod. The valve rod achieves communication between the connecting cavity and any water outlet pipeline in a rotating mode or can close communication between the connecting cavity and the water outlet pipeline at the same time, and opening and closing of a single inlet to multiple outlets are achieved.

This invention provides a high-pH heat treatment device for spherical graphite, belonging to the field of spherical graphite preparation technology. It includes a treatment tank for heat treating spherical graphite. The top and bottom of the treatment tank are fixedly connected to connecting pipes, and the other end of the connecting pipes is fixedly connected to a transfer tank. The upper and lower ends of the treatment tank are fixedly connected to sealing components for opening and closing the connecting pipes. Both ends of the inner side of the treatment tank are fixedly connected to side seats, and the other end of the side seats is slidably connected to an outer frame. By setting up connecting pipes, a transfer tank, and sealing components, this invention allows the device to open and close the connecting pipes by driving a partition with a cylinder. The transfer tank facilitates the addition and unloading of graphite, increasing the transfer space and eliminating the need for direct loading and unloading inside the treatment tank. This ensures the airtightness of the treatment tank, preventing heat and inert gas leakage and improving the practicality of the device.

The utility model provides an automatic production line for efficiently dehumidifying and rocking tea leaves, which comprises a dehumidifying device for removing moisture of tea leaves, a rocking device for rocking the tea leaves and a feeding device for automatically conveying the tea leaves from the dehumidifying device to the rocking device, wherein the dehumidifying device comprises a box body and a support frame for supporting the box body; the open ends of the two horizontal ends of the box body are a first feeding port and a first discharging port respectively. A conveying unit for automatically conveying tea leaves is arranged in the box body between the feed port I and the discharge port I; according to the utility model, the moisture content of the rainwater green leaves is removed and reduced through the moisture removing device, then the rainwater green leaves are automatically conveyed to the green leaf rocking device through the feeding device for green leaf rocking, once the tea leaves are put in until the green leaf rocking is finished, the moisture removing device is controlled by the first controller, and the green leaf rocking device is controlled by the second controller, so that the whole process is automatic and intelligent; and the produced semi-finished rock tea is remarkable in effect, low in cost and high in efficiency.

The present invention discloses a self-operated piston valve, comprising: a valve body, the valve body is provided with an inlet end and an outlet end, the inlet end is provided with a flow guide; a piston body is installed in the valve body, the end face of the piston body close to the inlet end is used to cooperate with the flow guide to realize valve closing; a spring is installed between the end face of the outlet end of the piston body and the valve body; the spring is used to push the piston body to move toward the flow guide; the valve body and the end face of the piston body close to the outlet end constitute a pressure chamber; the pressure chamber is communicated with the inlet end through a connecting hole provided on the piston body, and the valve body is provided with an external connection hole extending to the pressure chamber. The self-operated piston valve disclosed by the present invention uses the medium pressure in the valve body as a driving force, controls the pressure in the pressure chamber through the external connection hole and the connecting hole communicated with the pressure chamber, thereby driving the piston body to move axially in the valve body to realize the opening and closing of the valve. The structure is simple and lightweight, maintenance is simple, and the configuration of the external connection hole can be flexibly selected.

The utility model discloses a storage-resistant degradable pesticide plastic bottle which comprises a bottle body, a bottle neck and a first bottle cap, and the bottle neck is in threaded connection with the first bottle cap. A second bottle cap capable of being pressed is arranged at the top of the first bottle cap, and a sealing structure is arranged at the bottom of the second bottle cap; a sealing ring is integrally formed in the bottle neck; and a composite layer structure is arranged on the bottle body. According to the pesticide bottle, the pressing structure (the pressing principle of the pressing structure is the same as that of an automatic pressing pen in the prior art) is arranged between the second bottle cap and the connecting rod, opening and closing of the blocking piece and the sealing ring can be achieved, and then it is guaranteed that the pesticide bottle cannot leak liquid; by arranging the composite layer structure, the strength of the pesticide bottle can be improved, and the pesticide bottle is made of degradable materials and is more environmentally friendly.

A butterfly valve with double actuating mechanisms comprises a valve body, a butterfly plate, a main valve rod and the actuating mechanisms, the main valve rod is arranged on the valve body, one end of the main valve rod extends into the valve body to be connected with the butterfly plate, and each actuating mechanism comprises an oil cylinder, a spring cylinder and a main valve rod transmission assembly. The end, extending out of the valve body, of the main valve rod is sleeved with the main valve rod transmission assembly, and the spring cylinder and the oil cylinder are arranged on the two sides of the main valve rod transmission assembly respectively, connected with the main valve rod transmission assembly and drive the main valve rod transmission assembly to rotate. The main valve rod transmission assembly drives the main valve rod to rotate in the rotating process to achieve opening and closing control over the butterfly plate. Specifically, in the design, the oil cylinder and the spring cylinder are arranged on the two sides of the valve rod transmission assembly respectively, the acting force of a spring in the spring cylinder is adopted to add the acting force of the oil cylinder to achieve opening and closing of the valve, when the spring in the spring cylinder loses efficacy or breaks down, the valve can be opened through the oil cylinder, and normal operation of the valve is guaranteed.

The utility model discloses a construction wastewater recycling device, relates to the technical field of wastewater treatment, and solves the problems that particles of an existing device cannot be completely discharged and can be blocked in filtering holes of a filtering plate, and the practicability of construction wastewater treatment is influenced. A partition plate is fixedly connected to the interior of the wastewater treatment box, multiple rows of filtering holes are sequentially formed in the outer surface of the partition plate, a cleaning mechanism is installed on one side of the outer surface of the wastewater treatment box and located at the top of the partition plate, and a blockage clearing mechanism is installed on one side of the outer surface of the wastewater treatment box and located below the partition plate; according to the construction waste water filtering device, through the arrangement of the blockage clearing mechanism, the second motor rotates to drive the arc-shaped ejector block to move back and forth, and when the arc-shaped ejector block coincides with the filtering holes, the spring can drive the arc-shaped ejector block to move upwards and eject out fine particles blocked in the filtering holes, and then the fine particles are scraped away by the scraping plate, so that the construction waste water filtering effect is prevented from being influenced.

The utility model relates to the technical field of paper drying equipment, in particular to a paper drying device. Comprising a machine box and an air supply pipe, four temperature control areas are sequentially arranged in the machine box, the temperature control areas are arranged at intervals and form a backflow channel for airflow to pass through, surrounding walls are arranged outside the four temperature control areas, backflow layers are formed between the surrounding walls and the temperature control areas and communicated with the backflow channel, and the air supply pipe is communicated with the air supply pipe. Conveying rollers are symmetrically arranged on the two sides of the middle of the temperature control area, and air supply pipes are symmetrically arranged on the upper portion and the lower portion in the temperature control area respectively; the inside of the case is divided into a plurality of temperature areas, and a drying mode that the temperature rises step by step is adopted, so that the paper quality is improved, and the production efficiency is ensured.

The presbyopic glasses with the detachable glasses legs comprise a glasses frame and the glasses legs, fixing blocks are arranged at the two ends of the glasses frame, swing grooves are horizontally formed in the fixing blocks, hook columns are arranged in the swing grooves, clamping hooks are arranged at the tail ends of the glasses legs, the clamping hooks are used for being arranged in the swing grooves in a rotating mode and matched with the hook columns in a hooking mode, and plain glasses are arranged on the glasses frame. The plano glasses are divided into a presbyopic area and a plano area, the presbyopic area is prepared through a polishing processing technology, the presbyopic area is arranged below the plano area, an open groove communicated with the swing groove is formed in the outer wall of the fixing block, and a sealing piece used for opening the open groove to enable the clamping hook to be separated from the swing groove through the open groove when the glasses legs are relatively parallel to the glasses frame is arranged in the open groove. And the clamping hook is provided with a limiting piece which is matched with the sealing piece to prevent the sealing piece from opening the slot when the glasses legs are relatively vertical to the glasses frame. The presbyopic glasses solve the problems that presbyopic glasses lenses are made of convex lenses and cannot be worn and used for a long time, and glasses legs are difficult to detach and replace in the prior art.

The application relates to the technical field of high-temperature tensile test equipment, and particularly discloses a rotary multi-furnace high-temperature furnace switching table, which comprises a rotary base, the top of the rotary base is provided with a mounting table, a transmission device is arranged between the rotary base and the mounting table, the top of the mounting table is provided with an outer cover, a temperature control meter is arranged on the outer side of the outer cover, and electrical control components are integrated in the inner side of the outer cover; the transmission device comprises a planetary reducer and a servo motor, the output end of the servo motor drives the planetary reducer and the mounting table to rotate. The rotary multi-furnace high-temperature furnace switching table solves the problems of existing rotary switching table positioning drift, running shaking, low efficiency and inconvenient maintenance through rigid transmission, high-precision indexing, multi-station annular layout and full-process automation design, has the advantages of accurate positioning, stable running, high automation degree, safety and reliability, and significantly improved test efficiency, and is suitable for a full-automatic high-temperature tensile test system.

The invention relates to the technical field of Bluetooth earphones, in particular to a waterproof anti-lost high-endurance miniature Bluetooth earphone, which comprises a Bluetooth earphone body, and is characterized in that the Bluetooth earphone body comprises an earphone shell, an earphone cabin rotationally arranged in the earphone shell and two earphone bodies embedded in the earphone cabin; earphone placing grooves which are symmetrically arranged and matched with the earphone body are formed in the earphone bin, and a rotating shaft rotationally connected with the earphone shell is installed on the opposite side of the earphone bin; the earphone cabin is rotatably provided with a rotating mechanism connected with the rotating shaft, and the rotating mechanism comprises a housing and a rotating disc which is rotatably installed in the housing and is connected with one end, far away from the earphone cabin, of the rotating shaft. According to the invention, the earphone cabin is arranged to be in a turnover shape, so that more comprehensive protection can be provided, the damage risk of the earphone cabin when the earphone cabin is collided by external force or falls off is reduced, the earphone and the charging circuit can be protected from being damaged, meanwhile, the abrasion caused by frequent plugging is reduced, and the protection effect of the Bluetooth earphone body is improved.

The invention relates to the technical field of vehicle-mounted refrigerators, in particular to a pneumatic drawer vehicle-mounted refrigerator which comprises a main body, a drawer is movably connected in the main body, an air cylinder is arranged in the main body, and one end of the air cylinder communicates with an air pump; the drawer is provided with a connecting column matched with the air cylinder, the connecting column is inserted into the air cylinder from the other end of the air cylinder, and the connecting column and the air cylinder are dynamically sealed. The drawer slides back and forth in the main body through air suction and deflation of the air pump. The air cylinder is arranged in the body, the connecting column is arranged on the drawer, one end of the air cylinder communicates with the air pump, the other end of the air cylinder is in movable sealing connection with the connecting column, opening and closing of the drawer are achieved through air suction and deflation of the air pump, and the structure is simple and feasible.

The present invention discloses a gate valve with invisible anti-theft opening function, comprising a valve body, a valve cover connected to the valve body, a pressure cover connected to the valve cover and a valve stem that can rotate to control the upward and downward movement of a rubber plate, characterized in that: the valve stem comprises an upper valve stem and a lower valve stem, the lower valve stem is rotatably connected to the valve cover, the lower end of the lower valve stem is connected to the rubber plate, the upper end of the lower valve stem is provided with a first hole and a special-shaped groove communicating with the first hole, the first hole is coaxial with the lower valve stem, a spring is provided in the first hole, a connecting block is slidably provided in the special-shaped groove, and the spring acts on the connecting block; the upper valve stem is rotatably installed on the pressure cover through a pressure ring, a hand wheel is mounted on the upper valve stem, a second hole coaxial with the upper valve stem is provided on the upper valve stem, and a thread is provided in the middle of the second hole; the gate valve is consistent with an ordinary gate valve in appearance, can effectively reduce the risk of a special anti-theft valve installed being damaged by humans and opened by imitation special tools, and has high safety performance.

The utility model discloses a moistureproof finished product tank for fly ash, which comprises a tank body, a fixed ring is arranged above the tank body through a connecting plate, a movable cover is arranged between the tank body and the fixed ring, a supporting plate is arranged on the fixed ring, a U-shaped plate is arranged below the supporting plate, a rotating mechanism connected with the U-shaped plate is arranged on the supporting plate, and the rotating mechanism is connected with the U-shaped plate. And a dismounting plate positioned in the U-shaped plate is mounted on the movable cover. Through the arrangement of the movable cover, the fixed ring, the rotating motor, the dismounting plate and the U-shaped plate, the movable cover can be driven to rotate relative to the tank body by virtue of the cooperation of the rotating motor and other components, so that the tank body is opened and closed, manual assistance is not needed, and the movable cover also has a function of temporarily storing articles when the tank body is opened; and the use convenience and functionality of the device are improved.

The invention relates to the technical field of laser cladding, and particularly discloses long pipe part inner and outer laser cladding equipment which comprises a machine base, an outer cladding mechanism and an inner cladding mechanism, a detachable main shaft is arranged at one end of the machine base, the outer cladding mechanism is located on one side of the machine base and is in sliding fit with the machine base, and the inner cladding mechanism is located on the other side of the machine base. A slidable bracket, a pipe clamping mechanism, a follow-up supporting mechanism and an inner cladding mechanism are arranged at the upper end of the machine base, the bracket supports a part, the pipe clamping mechanism is arranged on the outer side of the part in a sleeving mode to clamp the part and drive the part to rotate, and the inner cladding mechanism comprises an inner cladding head. The follow-up supporting mechanism is close to the end part of the part, and the height of the follow-up supporting mechanism is adjusted along with jumping of the part; when the end part of the part is machined by the inner cladding head, the follow-up supporting mechanism is used for supporting; the problem that in the prior art, end driving is adopted, so that the radial run-out amplitude of the pipe is large is solved, the stability of parts is improved, and the machining efficiency and the cladding quality are improved.

This utility model discloses a sealed, wear-resistant, pneumatic quick-opening flap valve, which includes a valve body and a movable flap movably disposed within the valve body. A movable rotating shaft is disposed through the valve body and connected to the valve body via a bearing. One end of the movable flap is fixedly connected to the movable rotating shaft located within the valve body, and one end of the movable rotating shaft is fixedly connected to one end of a rotating arm. The other end of the rotating arm is pivotally connected to the front end of the piston rod of a cylinder. The fixed seat of the cylinder is pivotally connected to the valve body via a fixed shaft. The middle part of the rotating arm is fixedly connected to one end of a counterweight cantilever, and a counterweight block is disposed at the other end of the counterweight cantilever. In this design, the movable flap can be driven by the cylinder to rotate 90° around the center of the movable rotating shaft, thereby realizing the opening and closing of the valve body. The counterweight block can balance the torque of the movable flap, assisting the cylinder in realizing the rapid opening and closing of the valve body. The counterweight block can also provide preload force for the movable flap to ensure the airtightness of the valve body.

The invention relates to the technical field of prefabricated wall panels, and discloses a quick disassembly and assembly type non-bearing external wall panel which comprises a side frame and a prefabricated wall body, and positioning notches are formed in the two sides of the prefabricated wall body; a bearing supporting plate and a slope sliding seat are slidably mounted in the side frame in the vertical direction, a positioning plate is slidably mounted in the side frame in the horizontal direction, a detachable connecting rod is fixedly mounted on the upper side of the bearing supporting plate and movably penetrates through the slope sliding seat, and a connecting spring is fixedly mounted on the surface of the connecting rod. And the bottom end of the connecting spring is fixedly connected with the upper side of the inclined plane sliding seat. According to the external wall panel, the prefabricated wall body is installed in the position between the two side frames in a hoisting mode, the prefabricated wall body downwards presses the bearing supporting plate, the end of the positioning plate is pushed to horizontally stretch out and be inserted into the positioning notch through transmission of the connecting rod and the slope sliding base, self-locking of the prefabricated wall body and the side frames is achieved, and the self-locking effect is achieved. The problem that fixing and positioning operations are tedious is solved.