134results about How to "Difficult to enter" patented technology

The invention relates to the technical field of electric energy metering boxes, and discloses an electric energy metering box which comprises a box body and a box door, the box door is rotationally connected to the box body, a locking spring is arranged on the box body, a locking block is arranged on the locking spring, a connecting rope is arranged on the box door, and one end, away from the box door, of the connecting rope is arranged on the locking block; when the box door is opened, the locking spring is in a stretching state; when the box door is closed, the locking spring is in a non-stress state, a worker pulls the box door open, the box door drives the locking block to move through the connecting rope, the locking block drives the locking spring to stretch, and if the worker does not press the box door continuously, the locking spring can drive the box door to be closed through the locking block and the connecting rope; therefore, the problem that a worker forgets to close the box door is avoided, the box door can stably block the opening of the box body, external sundries are not easy to directly enter the box body, and the phenomenon that the electric energy metering box goes wrong due to the fact that an external person mistakenly shocks the electric energy metering box is avoided.

The invention discloses a red sandstone foundation pit drainage structure and a construction method thereof, and relates to the technical field of foundation pit drainage, the red sandstone foundation pit drainage structure comprises a buoyancy assembly, a water suction pump, an electromagnetic three-way valve and two sediment filtering assemblies, and the two sediment filtering assemblies are controlled by the electromagnetic three-way valve to alternately work; the silt filtering assembly in a working state is used for filtering silt, and the silt filtering assembly in an idle state is used for precipitating and collecting the intercepted silt. Alternate work of the two sediment filtering assemblies is achieved through the electromagnetic three-way valve, drainage continuity is guaranteed, the idle time of the sediment filtering assemblies is effectively utilized for sediment collection, and the situation that efficiency is reduced due to frequent cleaning of a traditional single filtering system is avoided; and the cleaned silt is independently collected, and does not enter the raw water body to cause the increase of the silt concentration and influence the subsequent drainage.

The utility model provides grounding equipment for a fishing-light complementary photovoltaic power station, and relates to the technical field of water photovoltaic power generation. The structure comprises a prefabricated pipe pile, a metal connecting base and a metal supporting frame, the bottom end of the prefabricated pipe pile is inserted into an underwater soil layer, the top end of the prefabricated pipe pile is located on the water surface, and a steel bar in the prefabricated pipe pile extends out of the two ends of the prefabricated pipe pile; a containing cavity is formed in the metal connecting base, a sleeving opening leading to the containing cavity is formed in the metal connecting base, an inserting groove used for inserting a steel bar is formed in the inner top wall of the containing cavity, the metal connecting base can be arranged at the top end of the prefabricated pipe pile in a sleeving mode through the sleeving opening, and the steel bar at the end is inserted into the inserting groove to abut against the inner wall of the inserting groove; a sealing ring is arranged between the inner side wall of the containing cavity and the pile body of the prefabricated pipe pile, the metal supporting frame is suitable for installing photovoltaic power generation equipment, and the metal supporting frame is connected with the metal connecting base. The lightning protection device has the advantage of long period of validity of lightning protection.

The utility model provides a blow-down valve, a base station and a cleaning system, and relates to the technical field of cleaning. The blow-down valve comprises a valve body. The valve body is provided with a first connector and a second connector, the first connector is used for being communicated with a drain outlet of the base station body, and the second connector is used for being communicated with a sewer line. A first sealing piece is arranged in the valve body and used for communicating or isolating the first connector and the second connector. An air inlet is formed in the position, close to the first connector, of the valve body, the air inlet is configured to be in a sealed state when the first sealing piece communicates with the first connector and the second connector, and the air inlet can be converted into an open state from the sealed state when the first sealing piece isolates the first connector and the second connector and the valve body is in a negative pressure state; and the first interface is communicated with the outside. According to the blow-down valve, fresh airflow can be provided for the sewage tank of the cleaning equipment in the base station cleaning process, and the problem that airflow of a sewer pipeline enters the cleaning equipment, and consequently peculiar smells are generated or bacteria exist is solved.

A purifying device for activated carbon production belongs to the field of activated carbon production and comprises a purifying box, a first baffle, a second baffle, a filtering mechanism, a spraying mechanism, a water collecting tank and a drying mechanism, an air inlet and an air outlet are formed in two sides of the purifying box, and a water outlet is formed in the bottom end of the front end of the purifying box. The upper end of the first baffle is fixedly connected with the upper end face of the interior of the purification box, the lower end of the second baffle is fixedly connected with the lower end of the interior of the purification box, and due to the fact that the interior of the purification box is separated by the first baffle and the second baffle, the interior of the purification box is divided into three chambers, namely a filtering chamber, a neutralizing chamber and a drying chamber; the water collecting tank is fixedly mounted at the bottom of the neutralizing chamber, waste gas generated by activated carbon production enters the filtering chamber through the gas inlet, is filtered by the filtering mechanism and enters the spraying mechanism to be neutralized, and water generated by the spraying mechanism finally flows into the water collecting tank and flows out of the water outlet; and finally, the gas enters the drying chamber for drying and is discharged from the gas outlet.

The utility model belongs to the technical field of metal plates, and particularly relates to a metal contour plate connecting component which is characterized in that a first female opening and a first male opening are respectively formed at the connecting ends of a formed first metal contour plate and a formed second metal contour plate, and the first metal contour plate and the second metal contour plate form an undercut lock stitch plate type. Therefore, the metal contour plate has the characteristic that no connecting structure is exposed at the connecting seam, the whole metal wall surface is attractive in appearance, rainwater is not easy to enter the inner plate, the installation is more convenient, and the metal contour plate is not easy to pollute and rust. After the metal contour plate is installed, the first metal contour plate is fixed to the side edge of the first female opening through a self-tapping screw, and the screw is hidden in the inner side of the contour plate through a connecting component formed by the first sub-opening and the first female opening, so that the screw is prevented from being wetted by rainwater and rusted. And the cutting position of the plate at the tail end of the first female buckle is subjected to flanging treatment, so that the potential safety hazard of cutting during mounting is avoided, and the effects of preventing a constructor from being scratched when fixing a bolt and preventing the plate from being rusted are achieved.

The invention relates to the technical field of ceramic membrane water treatment, in particular to application of hydrophobic modification of a tubular ceramic membrane based on polydimethylsiloxane to ozone mass transfer enhancement in an ozone membrane contact reactor. The modification method comprises the following steps: cleaning inner and outer surfaces of an original tubular ceramic membrane; preparing a PDMS (Polydimethylsiloxane) normal hexane solution; modifying the inner and outer surfaces of the tubular ceramic membrane by using a PDMS solution; performing vacuum drying on the membrane material; and cooling at room temperature. The hydrophobic modification method of the ceramic membrane provided by the invention is simple in process, low in raw material cost and free of secondary pollution. The modified tubular ceramic membrane has good hydrophobicity, and the measured contact angle of the membrane surface is greater than # imgabs0 #. The ozone membrane contact reactor constructed by utilizing the hydrophobic ceramic membrane has efficient ozone mass transfer performance, and the ozone concentration of effluent can reach 4.65 mg / L when the ozone membrane contact reactor is operated under the optimal working condition.

The invention belongs to the technical field of electrode materials, and particularly relates to an electrode foil, a preparation method thereof and an aluminum electrolytic capacitor, and the preparation method of the electrode foil comprises the steps: carrying out the formation of a corrosion foil, and forming an aluminum oxide film on the surface of the corrosion foil; forming a nano-porous silicon dioxide film on the surface of the aluminum oxide film to obtain an electrode foil with an aluminum oxide-silicon dioxide double-layer composite oxide film; and sequentially carrying out phosphating treatment and annealing treatment on the electrode foil. According to the preparation method, after the corrosion foil is subjected to formation treatment to form the Al2O3 film, the nano-porous SiO2 film is formed on the surface of the Al2O3 film, the SiO2 film is subjected to phosphating treatment to contain phosphorus elements, the phosphorus elements are uniformly diffused into the SiO2 film, a double-layer composite oxidation film with the Al2O3 inner layer and the SiO2 outer layer is obtained, and the specific volume, the hydration resistance and the corrosion resistance of the low-voltage electrode foil are improved.

The utility model belongs to the technical field of constructional engineering, and discloses a protective shed for constructional engineering, which comprises a top plate and four groups of support columns, the four groups of support columns are mounted on the lower surface of the top plate, a control panel is arranged on the front of the group of support columns at the front end of the left side, and a buffer mechanism is arranged on the upper surface of the top plate. A clamping groove is formed in the upper surface of the buffering mechanism, a cleaning mechanism for driving sundries at the upper end of the buffering mechanism to move is slidably connected into the clamping groove of the buffering mechanism, the lower surface of the cleaning mechanism is installed on the upper surface of the top plate, and a filtering mechanism is arranged in the cleaning mechanism. The cleaning mechanism is started to clean sundries accumulated at the upper end of the top plate, so that a worker does not need to climb to the upper end of the top plate for manual cleaning, and the safety of the protective shed is improved; rainwater accumulated in the cleaning mechanism is filtered through the filtering mechanism, and therefore it is avoided as much as possible that the upper end of the top plate collapses after the bearing mass of the upper end of the top plate is too large due to accumulation of too much rainwater in rainy days.

The utility model belongs to the technical field of flame-retardant cables, and particularly relates to a cable with a flame-retardant function, which comprises a base, a first protective cover is fixedly mounted at the top of the base, connecting boxes are fixedly mounted on the front side and the rear side of the first protective cover, a second protective cover is arranged above the first protective cover, and the second protective cover is fixedly mounted on the base. Connecting plates are fixedly mounted on the front side and the rear side of the second protective cover. Through the arranged protection assembly, a cable is placed above a first protection cover, a second protection cover can slide into the inner side of a connection box through a connection clamping block, so that the connection position of the cable is protected, a control handle is controlled to drive a lead screw to rotate, and the lead screw can drive a moving plate and a locking block to slide after rotating; and the locking block slides into the inner side of the connecting clamping block, so that the device is relatively convenient and rapid to disassemble and assemble without the help of a tool.

The utility model belongs to the technical field of data display, and particularly relates to a territorial space planning layout display device which comprises a base, universal wheels are assembled at the four corners of the bottom face of the base, two stand columns are fixedly connected to the top face of the base in a bilateral symmetry mode, and a rectangular frame is rotationally connected between the stand columns. A metal plate is fixedly connected to the inner wall of the rectangular frame, a plurality of magnetic strips are adsorbed on the metal plate, a pin shaft is assembled at one end of each magnetic strip, and a connecting plate is movably connected between the pin shafts on every two magnetic strips; a storage box is assembled at the position, close to the rear side, of the top face of the base, a cover plate is movably connected to the end face of the storage box, a fixing assembly is arranged on the side wall of the cover plate, and a lighting assembly is arranged on the top face of the rectangular frame. According to the drawing box, the edges of demolition displayed drawings can be adsorbed and fixed in a closed mode, the stability in use is improved, and meanwhile other drawings which are not displayed can be stored.

The invention relates to an automatic spraying device for the surface of a composite rod, which is applied to the technical field of surface spraying and comprises a rod piece, an automatic displacement platform assembly, a mixing nozzle assembly, a storage box, a supply box and an intelligent spraying controller, and a piston plate I is arranged in an inner cavity of the storage box; a piston plate II is arranged in the middle of the feeding box; a material supply module, a feeding module, an exhaust module and a spraying control module are arranged on the spraying intelligent controller, and the spraying control module is electrically connected with the rotating assembly, the mixing nozzle assembly, the automatic displacement platform assembly and the glue supply pump. Gas is not prone to being left in the coating in the coating adding process, the feeding quality is improved, the feeding speed is flexibly adjusted through the spraying intelligent controller, the material shortage condition is automatically judged, the coating is automatically supplemented, the mixing condition of new and old coatings is reduced in the supplementing process, the old coatings are not prone to being left, and continuous feeding is achieved.

The application discloses a double-layer wind-locking large fan, and aims at solving the problem that when the welding quality cannot reach the technical requirement or the flange plate and the air inlet I or the annular bottom plate and the left side plate are not connected tightly, external airflow is easily led into the fan, thereby affecting the air pressure of the fan. The left side plate (4) outwardly connected with the sealing plate (8) on the surface of the support frame (9) is adopted, and the sealing plate (8), the support frame (9) bottom plate and the left side plate (4) are sleeved on the air inlet II (7) of the impeller (3).

The utility model relates to the technical field of drawing frames, and discloses an anti-blocking device for a drawing frame, the anti-blocking device comprises a U-shaped frame arranged at an inlet of the drawing frame, two rotating shafts are rotatably mounted in the U-shaped frame, the two rotating shafts are both fixedly sleeved with hair collecting roller sleeves, felt is detachably mounted and fixed on the two hair collecting roller sleeves, and the hair collecting roller sleeves are fixedly sleeved with the felt. A driving assembly is arranged on the front side of the U-shaped frame and used for controlling the two rotating shafts to rotate relatively, and two dust suction hoods with the bottoms being open are fixedly installed in the U-shaped frame. Compared with the prior art, the device has the following advantages and effects that the adhesion effect of the felt is matched with the negative pressure dust collection effect, a dual protection mechanism is formed, short fibers, fluff and other impurities on the surfaces of fiber strips can be comprehensively and efficiently cleaned away, the blocking phenomenon caused by accumulation of the impurities at an inlet of the drawing frame is avoided, the impurities cannot enter the drawing frame easily, and the service life of the drawing frame is prolonged. Therefore, smoothness of a fiber rod conveying channel at the inlet of the drawing frame is guaranteed, and stable and efficient operation of the drawing frame is guaranteed.

The invention discloses a preparation method and application of rock wool thermal insulation wool, which belongs to the technical field of thermal insulation materials, and comprises the following steps: step S1, preparing the following raw materials by weight: step S1, preparing the following raw materials by weight: 15-25 parts of rock wool fiber, 5-10 parts of modified silica sol, 20-60 parts of solid additive, 5-6 parts of modified adhesive, 40-50 parts of water glass, 45-85 parts of aging liquid, 60-70 parts of modified liquid, 75-85 parts of n-hexane; step S2, base material blending ; Step S3, impregnation; Step S4, aging; Step S5, modification; Step S6, preparation; In the present invention, modified adhesive and modified silica sol are added, and the modified adhesive contains rich active hydroxyl groups, benzene rings, trifluoromethyl groups, humic acid structures and unsaturated double bonds, which can not only participate in the curing reaction of the adhesive, but also react with the modified silica sol to improve the overall cross-linking density of the rock wool insulation wool coating, improve the waterproof performance of the rock wool insulation wool, and at the same time improve the weather resistance and thermal insulation performance of the rock wool insulation wool.

The utility model relates to the technical field of doors and windows, concretely is a kind of hidden ground rail sliding door and window, including outer frame, two sash are slidably arranged in the middle of outer frame, two reserved slots are provided in the bottom of outer frame, a group of ground rails are provided in each reserved slot, the bottom of sash is provided with support frame, and the bottom of support frame is embedded in reserved slot.The utility model provides a kind of hidden ground rail sliding door and window, by the ground rail provided, hidden installation is under ground or windowsill, simple and beautiful, the ground rail design of existing sliding door and window is often recessed or protruded under ground or windowsill, cause inconvenience or stumble risk when walking, and safety performance is not high, the utility model is hidden installation under ground or windowsill by ground rail, can guarantee that inside and outside ground or windowsill is flush, improve traffic safety performance, sliding seal strip is arranged between the gap reserved in the middle of ground rail, dust, sundries are not easy to enter guide rail inside, meanwhile, ground rail is reserved detachable decorative cover, and daily cleaning and maintenance are convenient.

The present invention relates to a dust cup assembly and a vacuum cleaner, comprising: a dust cup, in which an inner cavity communicating with the outside is opened; a separator, at least partially assembled in the inner cavity, and a dust collecting space is defined between the outer wall of the separator and the cavity wall of the inner cavity; and a barrier, which is matched with the separator and divides the dust collecting space into a separation cavity and a dust collecting cavity that are interconnected; wherein the dust separated in the separation cavity is deposited along the barrier from the separation cavity and retained in the dust collecting cavity. In the above-mentioned dust cup assembly and vacuum cleaner, the dust separated in the separation cavity is deposited along the barrier from the separation cavity and retained in the dust collecting cavity. Due to the barrier effect of the barrier, it is not easy for the dust to re-enter the separation cavity from the dust collecting cavity under the dust raising effect of the cyclone, thereby improving the separation effect of gas and dust.

The utility model relates to traditional chinese medicinal material processing coarse screen technical field discloses a kind of coarse screen equipment used in traditional chinese medicinal material processing process, including bottom frame and base, the top end of the bottom frame is fixedly connected with connecting frame, the top end of the connecting frame is clamped with dust frame, the top end of the dust frame is fixedly connected with feed inlet, the top end of the feed inlet is clamped with top cover. The coarse screen equipment used in traditional chinese medicinal material processing process is provided with connecting frame and other parts, the top end of dust frame is fixedly connected with feed inlet, the top end of feed inlet is clamped with top cover, the top end of top cover is fixedly connected with third handle, top cover is detachably connected in the top of feed inlet, third handle opens top cover, traditional chinese medicinal material can be placed in sieve frame through feed inlet, then top cover is covered, so that dust is not easy to enter inside during screening, solve the problem that there is no shielding structure in top during screening, dust, impurities in air easily enter inside.

The utility model relates to a ventilation equipment field provides a kind of air duct assembly, air conditioning system and vehicle.Wind channel component includes air supply device, air supply device includes wind box, and wind box is opened with air inlet and air outlet, air inlet is provided with filter piece, and the position corresponding with air inlet in wind box is provided with air guide piece;Distribution box, fluid communication is in air outlet, and distribution box is provided with valve group, and distribution box includes first air duct, second air duct and third air duct, first air duct is fluid communication with the driver's room of vehicle, second air duct is fluid communication with the traction motor cabin of vehicle, third air duct is fluid communication with the passenger room of vehicle, and valve group is used to distribute the air intake of first air duct, second air duct and third air duct.The air duct assembly can make the airflow output of each air duct stable, avoid the air supply fluctuation caused by external wind pressure variation, ensure the comfort of driver's room, passenger room and the heat dissipation effect of traction motor cabin, improve the reliability of vehicle operation, simplify the structure of air duct assembly.

The utility model provides a bridge steel structure connecting fastener, which relates to the technical field of bridge steel structures, and comprises a bridge steel structure, a connecting piece is arranged at one end of the bridge steel structure, a plurality of fastening bolts are uniformly distributed on the side surface of the connecting piece in a penetrating manner, and the outer wall of one end of each fastening bolt is in threaded connection with a fastening nut. The outer side of the connecting piece is sleeved with a sealing sleeve, and sealing strips are arranged on the two sides of the sealing sleeve. The sealing sleeve is arranged on the outer side of the connecting piece in a sleeving mode and matched with the sealing strip to achieve three-side sealing, meanwhile, the cover plate is conveniently connected to the sealing sleeve through the rotating shaft, the cover plate is matched with the sealing gasket to cover the top of the connecting piece, and one side of the top can be further sealed; and the sealing rubber frame and the two-layer sealing frame are symmetrically arranged on the two sides of the sealing sleeve, and a double-sealing function is adopted, so that the multi-sealing effect is favorably provided.

The utility model relates to LED lamps technical field discloses a waterproof LED lighting lamp, including lamp shell body, lighting part and waterproof part, the waterproof part includes: interface waterproof spare, the outside of the bottom of lamp shell body is clamped and fixed, TYPE C charging line is inserted in the outside of the bottom of lamp shell body, the interface waterproof spare is clamped in the both sides of TYPE C plug and seals the interface, and the interface waterproof spare is fixed through magnetic attraction in the outside of lamp shell body, lamp pearl waterproof spare is connected in the top of lamp shell body and slides, when the rain is big, the area of rain is reduced by sliding down, normally state slides up to the highest place and improves the lighting effect, the utility model designs the interface waterproof spare of magnetic attraction type of matched use, usually, the interface waterproof spare can directly adsorb at the charging interface and play the role of dust prevention, can prevent rainwater from entering from the interface gap when needing charging, avoids the rainwater from seeping from the interface in the process of raining, prolongs the service life of charging wire and lamps and lanterns.

The utility model relates to the technical field of discharging devices, in particular to a discharging device of a gas-slag separator, which comprises a separator main body for separating gas and slag charge, a feed inlet, a gas outlet pipe and a slag outlet for discharging, the left side of the separator main body is communicated with the feed inlet, the top of the separator main body is communicated with the gas outlet pipe, and the gas outlet pipe is communicated with the slag outlet. A slag outlet is fixedly connected to the bottom of the separator body, a first fixing block with the middle sunken is fixedly connected into the collecting barrel, an electric lifting column is tightly attached to the sunken position of the first fixing block, a second fixing block is fixedly connected to the top of the electric lifting column, and a first groove is formed in the second fixing block; according to the utility model, the shaking device capable of moving up and down is arranged on the discharging device, so that the slag outlet is not easy to block, the discharging device is suitable for slag outlets with different heights, and the vibrating device is arranged on the discharging device, so that slag materials are not easy to adhere to the inner wall of the slag outlet.

The utility model relates to the field of medical equipment, in particular to a dragon tank fire extinguishing cover and a fixing device thereof, the dragon tank fire extinguishing cover comprises a cover body, the cover body is provided with a fire extinguishing cavity for containing a dragon tank opening, a heat insulation layer is embedded in the inner wall of the fire extinguishing cavity, and when a dragon tank is inversely buckled on the inner wall of the fire extinguishing cavity, the heat insulation layer abuts against the dragon tank opening to form sealing. Through the arrangement of the heat insulation layer, external air is not prone to entering the inner cavity of the pitaya tank, when oxygen in the inner cavity of the pitaya tank is exhausted, the grain in the pitaya tank is extinguished, thorough fire extinguishing of moxa ash is achieved, fire disasters and waste of the grain are reduced, meanwhile, when the grain is extinguished, heat energy supply of the grain to the pitaya tank is reduced, and the service life of the pitaya tank is prolonged. The cooling time of the pitaya tank is shortened, so that the stability of the next round of operation of the pitaya tank is ensured; and the cover body of the pitaya does not need to be subjected to thermal baking for a long time, so that the cover body is not easy to crack, scorch or deform, and the service life of the cover body is prolonged.

The utility model provides a kind of prepayment electric energy meter with replaceable digital keyboard, it is related to electric energy meter field, prepayment electric energy meter with replaceable digital keyboard includes electric energy meter main body, installation groove is opened in electric energy meter main body, keyboard assembly is installed in installation groove, electric energy meter main body one end is hinged with cover plate one end, cover plate other end is detachably connected with the other end of electric energy meter main body, cover plate is used to limit keyboard assembly, prepayment electric energy meter with replaceable digital keyboard provided by the utility model is detachably connected by keyboard assembly and electric energy meter main body, user can conveniently and quickly replace keyboard by oneself, without replacing entire electric energy meter, greatly reduce maintenance cost and time cost, after keyboard assembly installation is completed, cover plate can be turned over, cover plate is pressed on keyboard assembly, realize the limitation of keyboard assembly.

The present invention relates to the field of port engineering, and provides a water supply device for loading and unloading equipment. The device comprises a water tank and a water intake pipe, wherein an n-shaped outlet channel is provided on one side of the water tank, the opening of the n-shaped outlet channel faces downward, one end of the water intake pipe is inserted in the n-shaped outlet channel, and the other end of the water intake pipe is connected to the loading and unloading equipment. The n-shaped outlet channel of the water tank opens downward, so that it is not easy for external bulk dust to float into the n-shaped outlet channel, and the n-shaped outlet channel presents a tortuous maze-like structure, even if a small amount of dust floats into the opening of the n-shaped outlet channel, it is not easy to enter the water source inside it; the water intake pipe is consistent with the shape of the n-shaped outlet channel of the water tank in the internal part of the water tank, and the water extraction port of the water intake pipe extends to the bottom of the n-shaped outlet channel, so that the water intake pipe can extract the water at the bottom of the n-shaped outlet channel when pumping water, and the water tank has a simple structure, and the water tank can be in a long strip shape, arranged along the track, and the water intake pipe slides forward in the water tank without being limited by the water supply distance.

The utility model belongs to the technical field of electric connection, and particularly relates to a shielding connector, which comprises a shielding shell, a plug shell, a cable, a jack terminal, a seat body provided with a first through hole and a shielding compression ring sleeved on the cable, the plug housing is provided with a second through hole and an annular through hole communicated with the second through hole. The shielding shell comprises a first sleeve and a second sleeve connected with the first sleeve. The end, away from the first sleeve, of the second sleeve is provided with an annular flange. The plug shell is inserted into the first through hole, and an annular space communicated with the annular through hole is arranged between the plug shell and the seat body; the first sleeve is inserted into the second through hole. The shielding pressing ring is inserted into the first sleeve and abuts against the inner wall of the first sleeve. The second sleeve is inserted into the annular through hole, and the annular flange is located in the annular space and abuts against the shielding shell. The jack terminal is installed in the second through hole and is electrically connected with the cable. The shielding connector has good shielding effect and waterproof effect.

The utility model discloses an outer open type seamless welded fan relates to aluminium alloy door and window technical field. Including the window sash main part, and the window sash main part includes the window sash bottom frame and sets up movable window sash and fixed window sash in the inside of window sash bottom frame, and the outside of movable window sash is provided with sealing strip no.

The utility model belongs to the technical field of underwater cleaning robots, and particularly relates to an external structure of an underwater cleaning robot, which comprises an underwater cleaning robot connecting shell, a first protective cover is fixedly mounted on one side of the underwater cleaning robot connecting shell, and a connecting sleeve is fixedly mounted on the inner side of the underwater cleaning robot connecting shell. Through the arranged cleaning assembly, an underwater cleaning robot connecting shell is connected to the upper portion of an underwater cleaning robot, a monitoring camera in a glass window can be used for shooting, a first motor is controlled to drive a driving shaft to rotate, and the driving shaft drives a fixing shaft to rotate through a belt wheel and a synchronous belt; the fixing shaft rotates to drive a plurality of first connecting blocks and second connecting blocks to rotate, so that the first connecting blocks and the second connecting blocks can drive an internal cleaning brush and an external cleaning brush on the inner side and the outer side to rotate, a glass window is cleaned, and a camera is not prone to being shielded in the camera shooting process.