89results about How to "Prevent rust and corrosion" patented technology

The invention discloses rock core drilling sampling equipment for geological disaster investigation, and relates to the technical field of sampling, and the rock core drilling sampling equipment comprises a composite mechanism. According to the rock core drilling and sampling equipment for geological disaster investigation, through the design of a composite mechanism, the motor is connected with the butt joint block, and the drill rod is inserted into the inner side of the butt joint block, so that drilling and sampling are conducted on rocks, in the drilling process, the movable frame slides on the outer side of the sliding column so as to ascend and descend, and therefore the work requirement is met; a drill bit mechanism is arranged on the outer side of the drill rod, large rocks are crushed through the drill bit mechanism in the drilling process, meanwhile, rock blocks are guided to enter the inner side of the drill rod, so that a sample is taken out when the movable frame body is lifted subsequently, subsequent treatment is facilitated, and after sampling is finished, the drill bit mechanism is used for crushing the large rocks and guiding the rock blocks to enter the drill rod. When the sample is taken out from the inner side of the drill rod, the sample is taken out more cumbersomely and difficultly, the pushing and pressing mechanism is pressed by the electric push rod, so that the effect of discharging the sample is achieved, and normal operation of equipment is kept.

The invention discloses a full-hydrogen bell-type annealing furnace flue gas waste heat recycling system, which belongs to the field of flue gas waste heat recovery and comprises a workbench. According to the scheme, the filter screen is arranged, impurities in smoke can be blocked and filtered by the filter screen in the process that the smoke passes through the communicating pipe, meanwhile, the smoke impacts an impeller in the process that the smoke passes through the communicating pipe and drives the impeller to rotate, a rotating rod is driven to rotate in the rotating process of the impeller, and then an impacting rod is driven to rotate in the rotating process of the rotating rod; bristles are driven to rotate in the rotating process of an impact rod, then the bristles gradually make contact with impurities on the surface of a filter screen in the rotating process and drive the impurities, and due to the fact that the impurities rotate around a rotating rod, the impurities gradually move towards a first collecting tank under the common action of centrifugal force and gravity; and the flue gas falls into the collecting box through the first collecting tank and the second collecting tank, so that the filter screen is effectively prevented from being blocked to influence the normal passing of the flue gas through the filter screen, and the effect of ensuring the normal passing of the flue gas through the filter screen is achieved.

The utility model relates to the technical field of hardware parts, and discloses a hardware fastener with a protective sleeve, which comprises a bolt and further comprises an ejector head arranged at the top of the bolt and used for driving the bolt to rotate, and a nut used for being connected with fastening equipment is arranged on the outer side of the bolt. The protection mechanism is arranged on the outer side of the top and the outer side of the nut and used for wrapping the top and the nut, the protection mechanism comprises an upper sealing cap connected to the outer side of the top in a sleeving mode, and the inner wall of the upper sealing cap is provided with a first clamping hole matched with the top in size; a second clamping hole matched with the nut in size is formed in the inner wall of the lower sealing cap, an extension sleeve is fixed to the bottom of the lower sealing cap and connected to the outer side of the bolt in a sleeving mode, and the problems that when the bolt and the nut are used outdoors, corrosion and rusting are caused by rainwater erosion and air oxidation, and the bolt and the nut are difficult to disassemble as time goes on are solved. And troubles are brought to maintenance and replacement work.

The utility model provides a waterproof wire clamp which comprises an upper box body and a lower box body, one end of the upper box body and one end of the lower box body are hinged through a hinge shaft, and the other end of the upper box body and the other end of the lower box body are clamped through a buckle structure. Two fixed seats distributed at an interval are arranged in the lower box body, a conductive wire clamp for connecting a detonating bus and a leg wire is connected in each fixed seat, two crimping seats corresponding to the two conductive wire clamps respectively are arranged on the upper box body, and a bus clamping groove and a leg wire clamping groove with upward openings are formed in the tops of the conductive wire clamps; the width of the bus clamping groove is the same as the diameter of an inner core of a bus, the width of the leg wire clamping groove is the same as the diameter of an inner core of a leg wire, the conductive wire clamp is provided with a puncturing structure, and the puncturing structure is arranged close to the bus clamping groove, so that the skin of the bus entering the bus clamping groove is punctured by the puncturing structure. According to the wire clamp, the wire skin of the bus entering the bus clamping groove is punctured, the contact area of the inner core of the bus and the conductive wire clamp is increased, and the reliability and stability of connection between the bus and the conductive wire clamp are improved.

The hydraulic engineering valve comprises a first support and a second support, the front end of the first support is fixedly connected with a transverse plate, the upper end of the transverse plate is fixedly provided with a driving motor, the output end of the driving motor is fixedly connected with a main rotating shaft, and the main rotating shaft is rotationally connected with the first support and the second support. A first rope disc is fixedly connected to the outer side of the main rotating shaft, and a first steel wire rope is wound around the outer side of the first rope disc. According to the hydraulic engineering valve, the first steel wire rope drives the water valve to move upwards to open the valve through the cooperation of the main rotating shaft and the first rope disc, and the secondary rotating shaft drives the second rope disc to rotate through the cooperation of the driving wheel, the belt and the driven wheel while the valve is opened. And therefore, the second steel wire rope drives the filter screen to move downwards, and garbage on the water surface is filtered out.

The utility model discloses a warm air box used in a mine, and relates to the technical field of warm air boxes, the warm air box comprises a base, the upper surface of the base is provided with a warm air box, the inner wall of the warm air box is provided with a sliding groove, the inner side of the sliding groove is provided with a rock wool board, a pressing plate is arranged above the warm air box, a top cover is arranged above the pressing plate, and the top cover is provided with an air outlet. A vertical column is arranged between the top cover and the warm air box, a transverse rod is arranged on the inner side of the clamping groove, a plurality of sets of electric heating pipes are arranged below the transverse rod, a bottom plate is arranged below the warm air box, and an air inlet box is arranged at the bottom of the bottom plate. According to the warm air box used in the mine, air is conveyed into the warm air box through the arranged first draught fan, impurities in the air are filtered out through the arranged filter screen, the air is heated through the arranged electric heating pipe, and the air is heated through the electric heating pipe; and the heated air is conveyed into the mine for ventilation through a second fan and a ventilation pipeline.

This invention relates to an etching conveying module in the field of etching technology, comprising a fixed frame and several roller modules. Along the length of the fixed frame, several positioning grooves are sequentially arranged on the fixed frame, and the roller modules are respectively disposed in the positioning grooves. The fixed frame includes a metal skeleton and an isolation wrapping structure, with the metal skeleton embedded in the isolation wrapping structure. By embedding the metal skeleton in the isolation wrapping structure, this invention completely isolates the metal skeleton from contact with acidic etching solution and etching mist, fundamentally avoiding the problem of corrosion and rust on the metal skeleton. At the same time, the embedded metal skeleton ensures the structural strength of the entire fixed frame, and there will be no problems of frame deformation or positioning groove displacement even after long-term use. It balances corrosion resistance and structural strength, solving the pain point of the prior art where these two aspects could not be achieved simultaneously.

The utility model relates to battery energy storage device technical field especially a kind of sodium energy storage communication wire harness protection mechanism, including U-shaped protection groove, the surface of the U-shaped protection groove is sprayed with corrosion-resistant layer, the surface of the U-shaped protection groove is provided with U-shaped hole, the lower portion of U-shaped protection groove is provided with baffle, the surface of baffle is provided with wire harness outlet.The utility model can arrange wire harness in U-shaped protection groove, can provide physical protection for communication wire harness, prevent wire harness from being collided, extrusion mechanical damage by external object in container transportation and running process, guarantee the integrity of wire harness, prevent external environmental factors such as water, fire, corrosion from causing damage to cable or wire, ensure the normal use and safety of cable or wire, while cable or wire maintenance and replacement cost can be reduced, production efficiency and economic benefits can be improved, the aesthetic degree and durability of wire can be improved, so that it is safer, more reliable and durable.

The utility model discloses a high-temperature-resistant and corrosion-resistant accident oil pool which comprises an outer side box body, an accident oil pool body is arranged in the outer side box body, a clamping groove is formed in the top of the outer side box body, a mounting plate is arranged on the clamping groove, and a plurality of exhaust fans are arranged on the mounting plate. The installation plate is internally provided with an opening device which is convenient for people to enter the outer side box body after opening, ventilation devices are arranged on the two sides of the outer side box body, the accident oil pool is supported in the outer side box body through the supporting beams, and ventilation structures are arranged on the periphery of the outer side box body, so that on one hand, the ventilation function is achieved; on the other hand, a certain heat dissipation function is achieved through ventilation, and the accident oil pool is prevented from being in a high-temperature state.

The utility model discloses a gantry crane hoisting steel wire rope terminal anti-rotation mechanism, which relates to the technical field of port container loading and unloading, and comprises a hoisting steel wire rope terminal pull rod upper end fixing structure and a hoisting steel wire rope terminal pull rod anti-rotation structure, the fixing structure comprises a lock nut, a lock nut clamping plate, a bushing ring, a self-lubricating turnup sliding bearing, a maintenance-free spherical sliding thrust bearing, a bearing protection cover and a swing beam. The upper end of the hoisting steel wire rope terminal pull rod is fixed and pressed on the bushing ring through the lock nut and the lock nut clamping plate, and the bushing ring is nested on the maintenance-free spherical sliding thrust bearing; the maintenance-free spherical sliding thrust bearing is fixed to the swing beam structure, and the lifting steel wire rope terminal pull rod can do universal movement through the maintenance-free spherical sliding thrust bearing.

The utility model relates to the field of handles, and discloses a handle lock which comprises a lock body, a protective cover is connected to the outer wall of the lock body in a sleeved mode, a handle mechanism is installed on the outer wall of the protective cover through a bearing, a fingerprint module is installed on the outer wall of the handle mechanism, a heating mechanism is fixedly attached to one side of the inner wall of the handle mechanism, and an inserting plate is installed in an inserting groove in the upper portion of a handle. The air blowing fan is assembled through the assembling hole in the inner wall of the inserting plate, in the fingerprint unlocking process and in the process that fingers make contact with the fingerprint module, air is conveyed into the exhaust hole through the handle by means of the air blowing fan, and therefore sweat stains and water stains on the fingers of a user are blow-dried, the fingerprint unlocking efficiency is improved, and the use effect of the user is improved; the electric heating wire is heated through the distribution board so as to heat the handle, the use effect of a user in cold weather is improved, the sealing effect between the lock bodies is improved by installing the protective cover on the outer wall of the lock body, corrosion and rusting caused in a severe environment are avoided, and the service life is prolonged.

The cooling system of the rock wool centrifugal machine comprises a main shaft and a roller head, the interior of the main shaft is hollow, the roller head is arranged at one end of the main shaft and driven by the main shaft to rotate, a cooling pipe is arranged in the main shaft, and a water return cavity is formed between the inner side wall of the main shaft and the outer side wall of the cooling pipe; one end of the cooling pipe is connected with an external cooling water source, and the other end of the cooling pipe is communicated with the inner cavity of the roller head; at least one drainage hole is formed in the end, away from the roller head, of the spindle, and when the spindle rotates, cooling water enters the inner cavity of the roller head from the cooling pipe and then flows out of the drainage hole after passing through the water return cavity. When the main shaft rotates, cooling water in the water return cavity is discharged from the water drainage holes through centrifugal force, so that negative pressure is formed in the water return cavity, water in the cooling pipe can continuously enter the roller head and then enter the water return cavity, and the roller head can be fully cooled under the condition that a water supply pump is not needed; and finally, the fiber forming rate is increased, and the performance of the rock wool board / strip is improved.

The utility model discloses an FPC flat cable soft board with a protection function, which comprises a clamping board base, the upper surface of the clamping board base is provided with a board embedding groove and a sliding groove, the middle part of the board embedding groove is fixedly provided with an FPC board body in a clamping way, a sliding block is arranged between the sliding groove and a placing seat, and the FPC board body is provided with a protective cover. The FPC board clamping plate has the advantages that the FPC board body is placed in the board embedding groove formed in the clamping plate base in an embedded mode, after embedding is stable, the end of the sliding block slides into the sliding groove, the placing base is pushed until the sliding block is inserted into the sliding groove, the limiting bolt is screwed, and then the FPC board body is placed in the board embedding groove in an embedded mode. And the silica gel moisture-proof plate is pressed between the FPC board body and the placement seat in an abutting mode, the moisture absorption performance of the silica gel moisture-proof plate is used for improving the moisture-proof and drying performance of the FPC flat cable soft board, the FPC flat cable soft board is prevented from being corroded and rusted, and the service life of the FPC flat cable soft board is prolonged. The application of the FPC flat cable flexible board effectively avoids the problems and improves the practicability of the equipment.

The utility model relates to the field of tea rolling and discloses a tea rolling machine which comprises three supporting legs arranged in a circular array, the tops of the supporting legs are rotatably connected with the lower end of a crank connecting rod, the outer wall of a rolling cylinder is fixedly connected with the upper end of the crank connecting rod, a groove is formed in the lower surface of the crank connecting rod, and telescopic rods are fixedly connected to the sides, close to the circle center, of the supporting legs. A rubber air bag sleeves the telescopic rod, the rolling disc is fixed at the top of the telescopic rod, the edge of the rolling disc penetrates through the stress rod, the bottom of the stress rod is rotatably connected with a locking plate, an L-shaped bracket is arranged below the rolling disc, and an insertion plate is arranged on the outer wall of the supporting leg. When the locking plate is located on the insertion plate, the rolling disc does circumferential rolling motion along with the rolling cylinder; when the locking plate is located on the L-shaped support, the stress rod abuts against the groove, and the crank connecting rod drives the rolling disc to reciprocate up and down, so that residues are shaken off. The device has the effects of efficiently cleaning residues and being stable in equipment operation.

The utility model discloses a ceramic heating assembly of electronic smoking set, including inner ceramic pipe, outer ceramic pipe and heating resistance wire, and the outer ceramic pipe inner wall is closely connected in the outer wall of inner ceramic pipe, and the outer wall of inner ceramic pipe and / or the inner wall of outer ceramic pipe is equipped with the first annular line recess, after the sleeve connection of inner ceramic pipe and outer ceramic pipe, the first annular line recess is located between inner ceramic pipe and outer ceramic pipe and closes to form the first annular line pipeline, and the heating resistance wire is located in the first annular line pipeline, and the heating resistance wire heats after electrification to heat inner ceramic pipe, and inner ceramic pipe heat conduction to cigarette outer wall and roasts it to produce the smoke of inhalable oral cavity. Its beneficial effect is, and inner ceramic pipe heat conduction effect is uniform, can avoid the local overheating and lead to the smoke of producing the burnt taste, and the heating resistance wire is located between inner ceramic pipe and outer ceramic pipe and is protected by isolation, avoids damaging to reduce the heat conduction efficiency, and the inner wall of inner ceramic pipe is not easy to stick the tobacco tar, soot and affects the heat conduction efficiency.

An electromagnetic flowmeter comprises an inner lining pipe, an outer shell, a pole shoe, a coil, an electrode, and also comprises a pair of wire devices and a shielding device; two protrusions are symmetrically arranged in the middle of the outer wall of the inner lining pipe about its axis; a circle of protruding enclosures are respectively arranged at a certain distance from the two ports of the inner lining pipe for fixing the coil and the pole shoe, and a notch is respectively arranged on the inner lining pipe and the enclosure, on the opposite side of the two enclosures, and on both sides of the protrusion for placing the pole shoe, and the two notches are arranged symmetrically about the center point of the inner lining pipe; a through hole is arranged in the middle part of the outer shell, which cooperates with the protrusion and is used for placing the electrode and injecting glue; retaining holes are also arranged on the two sides of the protrusion for snapping the wire device; the wire device and the protrusion form a circle; the coil is wound around the protrusion and the enclosure, and the wire is led through the through hole on the outer shell; the shielding device is installed at the through hole of the outer shell.

The utility model belongs to the technical field of fans, and particularly relates to a dustproof fan which comprises an impeller, a support, a supporting shaft, a bearing, a coil and a magnetic ring. The top side of the support extends upwards to form a center pipe, the bearing is arranged in the center pipe, and the center pipe is sleeved with the coil. One end of the supporting shaft is connected with the bearing; the impeller comprises a fan blade shell and a plurality of blades arranged along the outer side of the fan blade shell; the fan blade shell is provided with a barrel extending downwards, a mounting cavity is formed in the barrel, the magnetic ring is arranged in the mounting cavity, the support is further provided with a first dustproof ring extending upwards, the first dustproof ring and the bottom end of the barrel are covered in a staggered mode, first ribs are arranged on the side wall of the barrel, and when the impeller rotates, the first ribs form downward airflow. And the barrel body can effectively prevent dust from entering the barrel body. When the impeller rotates, downward airflow is formed by the first ribs, dust entering the barrel can be blown out, and the dust is prevented from being left in the mounting cavity.

The utility model discloses a fastening type deformed steel bar connecting sleeve, which relates to the technical field of deformed steel bars and comprises a fastening connecting sleeve main body, deformed steel bars are arranged on the left side and the right side of the fastening connecting sleeve main body, and the fastening connecting sleeve main body comprises a connecting sleeve shell. Mounting holes are formed in the left side and the right side of the connecting sleeve shell correspondingly, bearings are arranged on the inner walls of the two mounting holes correspondingly, deformed steel bar inserting cylinders are fixedly mounted on inner rings of the two bearings correspondingly, clamping grooves are formed in the lower portions of the closest sides of the inner walls of the two mounting holes correspondingly, and positioning mechanisms are fixedly mounted in the clamping grooves correspondingly. And a protective cover is movably mounted at the top of the fastening connection sleeve main body. The connecting sleeve shell, the deformed steel bar inserting barrel and the bearing are matched with one another, so that two deformed steel bars can be quickly fastened and locked by a single person, meanwhile, a plurality of deformed steel bars can be sequentially tightened one by one through the connecting sleeve, and the construction efficiency is improved.

The utility model discloses a drilling well leakage high-precision positioning device, and belongs to the technical field of well leakage positioning. Comprising at least one mounting cylinder and at least two drill columns, and the mounting cylinder is detachably mounted between the two drill columns; a placement cavity is formed in the mounting cylinder, a mounting hole is formed in the side face of the mounting cylinder, the mounting hole penetrates through the side face of the mounting cylinder, and the mounting hole communicates with the placement cavity; a detection assembly is mounted at the placement cavity; the detection assembly comprises a pressure sensor and a temperature sensor, and the pressure sensor and the temperature sensor are located on the two sides of the containing cavity and installed in the installation hole in a clearance fit mode. According to the drilling leakage high-precision positioning device, the multiple drill columns replace a traditional whole drill rod, the installation barrels with the detection assemblies are detachably installed between the adjacent drill columns, when one detection assembly is damaged, rapid replacement and maintenance can be achieved only by disassembling the corresponding installation barrel, the maintenance steps are simplified, and the maintenance efficiency is improved. Meanwhile, the standby cost is reduced.

The utility model belongs to the technical field of livestock breeding, and particularly relates to a roller shutter door structure for a cowshed, which comprises a storage box and a mounting plate, a rolling device and a cleaning device are arranged in the storage box, the rolling device comprises a power unit, a rolling unit and a guide unit, and the power unit is connected with the rolling unit. The cleaning device comprises a cleaning unit, a water pumping unit and a water conveying unit. According to the rolling door structure for the cowshed, a rolling motor is started, a rotating shaft is driven to rotate, then a driving bevel gear is driven to rotate, a driven bevel gear connected with the driving bevel gear in a meshed mode is driven to rotate, then a rolling shaft drives a rolling roller to rotate, a rolling door is rolled along a guide rail, and the door opening action is completed; and when the roller shutter door is rolled up, stains on the surface of the roller shutter door are wiped away by the cleaning sponge, so that the effect of cleaning the roller shutter door is achieved, and the situation that a large number of stains are accumulated and rolled up in the storage box, and consequently all parts are corroded and rusted is avoided.

The utility model relates to the technical field of protective nets, in particular to an open type shaped protector convenient to disassemble and assemble. According to the technical scheme, the open type conventionalized protection device convenient to disassemble and assemble comprises a protection net and further comprises a rotatable stand column, an expansion bolt, a hinge, universal wheels, a stand column, a buckle and an anti-skid sealing rubber mat. Buckles are arranged on the two sides of the rotatable stand column, the buckles are arranged in a staggered mode, and the buckles are fixedly connected with the rotatable stand column. The lower end shaft of the rotatable stand column is inserted into the expansion bolt pre-buried underground to be locked and fixed through threads, so that the protective net is driven to be vertically and fixedly assembled, the protective net and the stand column are fixed through the hinge, and therefore the rapid assembling and fixing functions of the protective net are achieved.

The utility model relates to the technical field of pipeline construction, in particular to a drainage device for water supply and drainage pipeline construction, which comprises a bearing bottom plate, a drainage mechanism is fixedly mounted at the top end of the bearing bottom plate, a filtering mechanism is arranged in the drainage mechanism, a protective enclosure frame is fixedly welded at the top end of the bearing bottom plate, and the protective enclosure frame is in an open type design. Reserved pipe holes are formed in the two sides of the water drainage mechanism, the water drainage mechanism comprises a water pump, a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are connected to a water inlet and a water outlet in the two sides of the water pump respectively, the filtering mechanism comprises a T-shaped connecting pipe and a beveled filter cartridge, and the beveled filter cartridge is fixedly installed in the T-shaped connecting pipe. And the top inclined surface faces the water inlet direction. When water flows through the interior of the T-shaped connecting pipe, due to the fact that the beveled filter cartridge is fixedly installed in the water flow channel in the T-shaped connecting pipe, and the inclined face of the beveled filter cartridge faces the water incoming direction, impurities such as sand and gravel in the water flow are filtered through the beveled filter cartridge.

The utility model relates to the technical field of metal pipes, and discloses a metal wear-resistant pipeline with an inner anticorrosive coating, which comprises a first outer pipe, a second outer pipe is arranged on one side of the first outer pipe, a third outer pipe is arranged on one side of the second outer pipe, and inner pipes are fixedly arranged in the first outer pipe, the second outer pipe and the third outer pipe. According to the metal wear-resistant pipeline and pipe fitting with the inner anti-corrosion coatings, the inner pipes are arranged in the first outer pipe, the second outer pipe and the third outer pipe, and the first flange plates and the second flange plates on the two sides of the first outer pipe, the second outer pipe and the third outer pipe are fixed in a threaded mode, so that modularization of the pipeline is achieved; in this way, when one inner pipe is damaged, the whole pipeline does not need to be replaced, only the fixing bolts need to be detached, and one inner pipe is detached for replacement, so that cost is saved, convenience is brought to workers, and the practicability of equipment is greatly improved.

A box-type substation base anti-corrosion device relates to the technical field of box-type substation base protection and comprises a substation box body, a fixed base and an outdoor mounting support, the substation box body is arranged on the mounting support, the fixed base is arranged on the substation box body, and an exhaust device is arranged on the fixed base. The exhaust device is composed of a fixing plate, an exhaust assembly and a guide plate, the exhaust assembly is arranged on the fixing plate, and the guide plate is arranged on the exhaust assembly; the box-type substation base is reasonable and practical in structure and easy to operate, the temperature difference between the upper face and the lower face of the box-type substation base is conveniently adjusted, water drops are prevented from being condensed on the lower face of the box-type substation base, the lower face of the box-type substation base is conveniently ventilated, and the lower face of the box-type substation base is prevented from being affected with damp, rusted and corroded; and the service life of the box-type substation base is prolonged.

The utility model discloses an outdoor rod end knuckle bearing, which comprises a rod end body and a built-in bearing, one end of the rod end body is provided with a through groove, the built-in bearing is fixed in the through groove, the built-in bearing comprises an outer ring, the outer side surfaces of the rod end body and the outer ring are provided with electroplated layers, and the electroplated layers are zinc-nickel alloy layers; the nickel alloy layer is good in corrosion resistance and attractive in appearance, the zinc-nickel alloy layer on the surface effectively prevents the rod end knuckle bearing from being corroded and rusted, and the rod end knuckle bearing can resist a neutral salt spray test for more than 480 hours.

The utility model relates to cable bridge grounding technical field and disclose a kind of bridge section interval ground jumper, comprising: two groups of bridge body and the U-shaped sheet claw for the splicing assembly of two bridge bodies, U-shaped sheet claw is used to fix two bridge bodies by bolt group;Wire clamp component, wire clamp component is used to equip potential connection of two splicing assembly two bridge bodies;Wire clamp component includes two wire clamp units and the jumper ground wire installed between two wire clamp units, and two wire clamp units are used to connect the two ends of jumper ground wire with two bridge bodies. The bridge section interval ground jumper, installation is convenient and does not damage bridge body: by Z type sheet frame directly installed on U-shaped sheet claw, without punching on bridge body;With the extrusion force of bridge body splicing, wire clamp fixing is synchronously completed, and installation efficiency is improved;Reliable connection and good contact: screw rod driven abutting block adjustable contact force, and enhance grounding connection effect.

The utility model discloses a metal surface anti-rust layer structure, which relates to the field of metal surface anti-rust layer structures, and comprises an adhesion layer adhered on the surface of a metal substrate, a plurality of round holes are arranged on the adhesion layer, a zinc column is embedded in each round hole, a zinc sheet layer is arranged on one side of the adhesion layer far away from a metal body, and the zinc sheet layer is arranged on the other side of the adhesion layer far away from the metal body. The multiple zinc columns are fixedly connected with the zinc sheet layer, a heat insulation layer is arranged on the zinc sheet layer, a first waterproof layer is arranged on the side, away from the zinc sheet layer, of the heat insulation layer, and a wear-resistant layer is arranged on the side, away from the heat insulation layer, of the first waterproof layer. According to the utility model, the zinc sheet layer and the zinc column are used as sacrificial anodes and are connected with the metal substrates needing to be protected, and the sacrificial anodes have higher reducibility and can be oxidized in the battery and gradually consumed, so that the connected metal substrates are protected from corrosion, and the metal substrates are prevented from rusting due to electrochemical corrosion; and rust prevention of the metal matrix is achieved.

The utility model discloses an oil field four-way valve with strong sealing performance, and relates to the technical field of oil field four-way valves, the oil field four-way valve comprises a four-way valve main body and a base, the four-way valve main body is arranged on the middle side of the top of the base, and the connecting end of the four-way valve main body is fixedly connected with four pipelines in an annular array mode. The ends, away from the four-way valve body, of the four pipelines are movably connected with connecting pipes, sealing mechanisms are arranged outside the opposite faces of the pipelines and the connecting pipes, and T-shaped sliding grooves are formed in the left side and the right side, close to the pipelines, of the top of the base correspondingly. The connecting pipe and the pipeline are mounted, and the sealing mechanism is operated to surround and connect the joint of the pipeline and the connecting pipe, so that the outer wall of the joint of the pipeline and the connecting pipe is buckled and sealed, the sealing mechanism plays a role in protecting the pipeline and the connecting pipe, bolts are prevented from being rusted and corroded, and the service life of the pipeline is prolonged. And the use sealing performance of the four-way valve is enhanced.