302 results about "Cast iron pipe" patented technology

The invention belongs to the field of application of an image processing technology and an automatic detection technology, provides a nodular cast iron pipe white sprayed code integrity detection method and system, and aims to solve the problems of low nodular cast iron pipe white sprayed code recognition accuracy, poor environmental adaptability, low processing speed, image splicing and the like in industrial production. In combination with an optimized image preprocessing technology, an advanced feature point detection and matching technology and an image fusion algorithm are applied to solve the problem of image seamless splicing. By adopting the method provided by the invention, the error and time cost in a manual identification process can be greatly reduced through prediction, and the automation and intelligence level of a production line is improved. The production efficiency can be improved, the product quality can be ensured, and the increasing industrial automation requirement is met. Finally, the system becomes an important tool for improving the product quality and the production efficiency of nodular cast iron pipe production enterprises.

The utility model relates to the technical field of cast iron pipe dies, in particular to an inner wall horn mouth cambered surface polishing device for a thin-walled pipe die, which is used for polishing the inner wall of the pipe die and comprises an inner positioning group, an outer positioning group and a polishing group, the inner positioning group comprises an inner positioning support and an inner abutting block which is telescopically arranged in the inner positioning support, and the outer positioning group comprises an outer abutting block which is telescopically arranged in the inner positioning support. The inner abutting block abuts against the inner wall of the pipe die. The outer positioning set comprises an outer positioning support and an outer abutting block, and the outer abutting block abuts against the outer wall of the pipe die. The polishing set comprises a polishing support and a polishing head installed on the polishing support, the polishing head partially extends out of the polishing support and abuts against the inner wall of the pipe die, and the face, facing the pipe die, of the polishing head is consistent with the outline of the inner wall of the pipe die. In this way, the inner wall of the pipe die with the large inclination or the horn-mouth-shaped arc face is polished, one-time forming is achieved, and machining stability is guaranteed.

The application discloses a nodular cast iron pipe with a composite coating and belongs to the technical field of metal corrosion prevention, comprising a nodular cast iron pipe base body, a composite outer coating coated on the outer surface of the nodular cast iron pipe base body and an inner coating closely attached to the inner surface of the nodular cast iron pipe base body, characterized in that the composite outer coating comprises an alkali-activated gel layer and a zinc-based coating, the zinc-based coating is arranged between the outer surface of the nodular cast iron pipe base body and the alkali-activated gel layer, the alkali-activated gel layer is an alkali-activated slag fly ash corrosion-resistant gel material, and the zinc-based coating is one or more of a pure zinc coating, a zinc-aluminum alloy coating or a zinc-rich coating layer. The alkali-activated gel layer provided by the application is coated on the inner or outer surface of the pipe and provides further corrosion protection for the nodular cast iron pipe, so that the pipe can be used in extremely harsh construction environments, and has extremely strong weather resistance in acidic soil and overhead fields.

The present invention discloses a flaw detection device and method based on the production of ductile iron pipes, and relates to the technical field of ductile iron pipe detection. The present invention includes a ductile iron pipe arranged on a detection platform, and also includes: a positioning unit, which is arranged on a processing box 1 and includes a driving component and a positioning component; a flaw detection unit, which is arranged on the detection platform and includes a synchronization component and a detection component, and a processing box 1 and a processing box 2 are arranged on the detection platform. The advantage is that the present invention can realize synchronous visual flaw detection of the inner and outer walls of the ductile iron pipe without changing the positioning state of the ductile iron pipe, and can realize comprehensive detection of the inner and outer walls of the ductile iron pipe. At the same time as the visual detection, the collision knocking rod can be driven to intermittently automatically knock on the ductile iron pipe to generate vibration waves. At the same time, the ripple detector can be used to realize the collection and detection of the vibration waves, so that the internal flaw detection of the ductile iron pipe can be realized, and the detection range is wider.

The utility model relates to the technical field of nodular cast iron pipe butt joint, and discloses a nodular cast iron pipe sliding-in type connection roller skating pushing mechanism which comprises universal balls and threaded rods, the universal balls are used for being matched with an iron pipe to conduct sliding translation or being matched with the iron pipe to conduct rolling, and the universal balls are evenly distributed and installed on a top arc-shaped plate of an arc-shaped installation box. The two oppositely-opened arc-shaped cover plates at the bottom of the arc-shaped mounting box are connected through a lock catch; the bottom end of the threaded rod is in threaded butt joint with a support provided with an inner threaded groove, the top end of the threaded rod is inserted into a sleeve at the bottom of the rotating base, the sleeve rotates relative to the threaded rod to drive the rotating base and the arc-shaped mounting box to adjust the horizontal direction, and then the conveying direction of the iron pipe is adjusted. The threaded rod rotates relative to the support so that lifting of the threaded rod can be adjusted, the height of the rotating base and the height of the arc-shaped mounting box can be adjusted, and the conveying height of the iron pipe can be adjusted. The horizontal angle and height of the sliding-in type connecting roller skate can be adjusted, and the application range is wide.

The nodular cast iron pipe fitting carrying device comprises a bottom core supporting plate, upper supporting plate bodies are symmetrically arranged on the two sides of the upper side of the bottom core supporting plate, and core long-strip rubber pads are fixedly arranged on the upper sides of the upper supporting plate bodies; a U-shaped rotating seat is fixedly arranged at the fixed joint of the upper supporting plate body and the bottom core supporting plate; arc-shaped pressing limiting frames are rotationally arranged on the wing parts on the two sides of the U-shaped rotating seat through hinge shafts; an auxiliary strip rubber pad is fixedly arranged at the edge of the other end of the arc-shaped pressing limiting frame; and stability is enhanced, an upper supporting plate body and a core long-strip rubber pad in the device design provide stable supporting points, and an arc-shaped pressing limiting frame and an auxiliary long-strip rubber pad are used in cooperation, so that the stability of the pipe fitting in the carrying process is further enhanced. Due to the fact that the pipe fitting is directly placed on the rubber pad, direct friction between the pipe fitting and the ground or other hard surfaces is reduced, and the risk that the pipe fitting is damaged in the carrying process is reduced.

The application belongs to the technical field of pipe mold cleaning, and discloses a cast iron pipe mold inner wall cleaning device, which comprises a tow wheel group, a pipe mold placed above the tow wheel group, a support rail arranged in the middle of the inner cavity of the pipe mold and along the axial direction of the pipe mold, a linear drive module slidably arranged on the support rail along the extension direction of the support rail, a movable wheel module arranged below the linear drive module, connected with the linear drive module through a fixing frame and in rolling contact with the inner wall of the pipe mold, a swing arm arranged below the linear drive module and hinged with the fixing frame, and a cleaning module hinged to the bottom of the swing arm. When the pipe mold rotates, the scraper can scrape off the dirt and other impurities passing through the scraper, and the dirt moves to the inner side of the dust accumulation channel along with the accumulation of the impurities. Then, the dust in the dust accumulation channel is sucked upward and collected through the cooperation of the suction holes and the suction device to generate negative pressure, so that the inner wall of the pipe mold is uniformly cleaned.

The utility model relates to a butt joint installation device for nodular cast iron pipes, one end of each nodular cast iron pipe is fixedly provided with a horn mouth, and the butt joint installation device comprises a fixing assembly which is of a closed annular structure, is installed on the nodular cast iron pipes in a buckled mode and is suitable for fixing the nodular cast iron pipes; the supporting assembly is located on one side of the horn mouth of the nodular cast iron pipe and suitable for bearing the adjacent nodular cast iron pipes for butt joint installation; the telescopic part is mounted between the fixing assembly and the supporting assembly and suitable for adjusting the distance between the fixing assembly and the supporting assembly. The butt-joint installation device comprises a fixing assembly, a supporting assembly and a telescopic piece, the fixing assembly sleeves one end of the nodular cast iron pipe and is suitable for fixing the nodular cast iron pipe, the supporting assembly is located at the other end of the nodular cast iron pipe, and the top end face of the supporting assembly is flush with the inner wall of the horn mouth and is suitable for bearing the adjacent nodular cast iron pipes for butt-joint installation. Alignment is fast, installation is convenient, and firmness and stability are achieved; and the device is suitable for nodular cast iron pipes of various sizes and wide in application range.

The utility model provides a pipe clamping device which comprises the components of a support which is provided with a clamping groove, the width of the clamping groove from a groove opening to a groove bottom is gradually reduced, and the clamping groove is used for placing a pipeline; and the pressing rod assembly is movably installed on the support, a pressing block is arranged on the pressing rod assembly, and the pressing rod assembly can be adjusted and fixed to the position where the pressing block tightly presses the pipeline in the clamping groove in the vertical direction. Axial and radial displacement of the pipeline is restrained through vertical pressure of the pressing block. And by adjusting the size of the clamping groove, the device can be suitable for pipelines with different pipe diameters. Meanwhile, the pipeline clamp is made of common light metal plates, and compared with an original cast iron pipeline clamp, the pipeline clamp is easier to maintain, lower in weight, capable of being disassembled and assembled manually and flexible to use.

The utility model belongs to the field of municipal engineering, and provides a pipeline socket and spigot joint reinforcing and protecting device which comprises two deflection protecting pieces. Each deflection protecting piece comprises a front extending part, a protruding part and a rear extending part which are sequentially connected. The two deflection protection pieces are symmetrically arranged and jointly form a sleeve structure, and the sleeve structure is coaxially arranged on the outer side of a pipeline socket and spigot joint in a sleeving mode. When the device is used, the water leakage point of the pipeline is determined firstly, then a working face meeting the installation requirement of the device is excavated at a connector, after the pipeline is corrected in place, the device is installed at the position of the connector, then a pipe bottom foundation is filled, and soil covering on the pipe side and the pipe top is completed. The device can reinforce and protect the deformed and fractured nodular cast iron pipe joint under the condition of not stopping the normal operation of the pipe network, can realize quick repair, reduce the excavation workload of a foundation pit, reduce the social influence caused by the stop operation of the pipe network and reduce the adverse influence on the environment, is simple and feasible, and can ensure the quality.

The utility model relates to the technical field of cast iron pipe auxiliary processing equipment, and provides a centering device for cast iron pipe production, which comprises a spigot clamping device, a socket positioning device and two carrier roller devices, the socket clamping device, the two carrier roller devices and the socket positioning device are arranged in sequence; the spigot clamping device and the socket positioning device respectively comprise a bracket, a push rod and an air cylinder; the bracket is provided with a pair of upper frame plates and a pair of lower frame plates; the upper frame plate and the lower frame plate are horizontally arranged, and a gap is formed between the upper frame plate and the lower frame plate; a plurality of supporting legs are mounted at the bottom of the lower frame plate; an air cylinder is arranged on the supporting leg on the outermost side; the telescopic end of the cylinder is connected with the push rod; and the push rod is arranged in a gap between the upper frame plate and the lower frame plate. The cast iron pipe centering device can achieve centering of cast iron pipes before machining, centering deviation is reduced, the labor intensity of workers is lowered, the operation difficulty is lowered, and centering efficiency is improved.

The utility model discloses a semi-X-shaped rubber ring sealing structure of a nodular cast iron pipe, and relates to the technical field of socket fit sealing of nodular cast iron pipes. The sealing ring comprises an integrally-formed semi-X-shaped rubber ring, one end of the periphery of the rubber ring is provided with a protruding annular positioning clamping block, the other end of the periphery of the rubber ring is provided with a first sealing part, and a straight part is arranged between the first sealing part and the positioning clamping block; the end, close to the positioning clamping block, of the inner circumference of the rubber ring is an inclined part, an extrusion part is arranged in the middle of the inner circumference, and the vertical distance from the inner circumference of the rubber ring to the straight part is gradually increased from the end where the positioning clamping block is located to the extrusion part. A second sealing part is arranged at one end, far away from the positioning fixture block, of the inner circumference of the rubber ring, one side of the section of the second sealing part and the first sealing part is arc-shaped, and arc-shaped grooves are formed between the second sealing part and the first sealing part and between the second sealing part and the extrusion part respectively; the nodular cast iron pipeline is reasonable in section appearance design, the sealing reliability of the nodular cast iron pipeline in certain high-pressure, high-temperature and dynamic environments is improved, and the requirement for high-temperature hot water conveying in the heating industry can be met.

The application relates to the technical field of nodular column iron pipe processing, and discloses a self-anchored pipe socket welding ring welding device based on construction and an operation method thereof, which comprises a push plate, a self-anchored nodular cast iron pipe and a copper hoop, one end of the top of the push plate is fixedly connected with an electric telescopic table, the output end of the electric telescopic table is fixedly connected with a mounting frame, and the inner wall of the mounting frame is fixedly connected with a first motor. The welding gun arranged at the top of the assembling block reciprocatingly performs slow overlay welding between the two copper hoops under the slow rotation of the first motor, and the application further solves the problem that, in the use process of the traditional self-anchored pipe socket welding ring welding device, when special-sized pipelines are needed, the self-anchored nodular cast iron pipe often needs to be taken to a designated processing factory for processing, which is not only troublesome for the back-and-forth transportation, but also difficult to timely perform secondary processing on the pipe according to the construction demand, so that the pipeline throughness cannot be guaranteed.

The utility model relates to the technical field of lifting appliances, in particular to a lifting appliance for a nodular cast iron pipe, which comprises a lifting appliance rod, a mounting block b, a reinforcing component and a lifting component, a mounting block a is connected above the lifting appliance rod, two ends above the mounting block a are respectively connected with a splicing rod a, the splicing rod a is provided with a through hole a, the mounting block a and the inner walls of the two splicing rods a form a mounting cavity a, a connecting piece a is connected above the mounting cavity a, and the connecting piece a is connected with a lifting hook a and is used for being connected with lifting machine equipment; the mounting block b is connected below the lifting appliance rod; the mounting block b is connected with a splicing rod b, and the splicing rod b and the splicing rod a are the same in structure. According to the lifting appliance for the nodular cast iron pipe, a proper connecting position can be conveniently selected according to a nodular cast iron pipe body lifting point, the rationality of a lifting mode is improved, the safety and stability of nodular cast iron pipe body lifting operation are improved, deformation or damage of the nodular cast iron pipe in the lifting process is avoided, and the lifting cost and risk of the lifting appliance for the nodular cast iron pipe are reduced.

The utility model discloses a nodular cast iron pipeline socket tool, which belongs to the technical field of socket tools and comprises a pull rod wrench, a pull rod is arranged at the lower end of the pull rod wrench, a pull rod head is arranged at the lower end of the pull rod, a clamping head is arranged at the lower end of the pull rod head, and the clamping head is connected with the pull rod head through a rotating shaft. A first hanging lug is arranged at the upper end of the pull rod head, and second hanging lugs are arranged at the two ends of the pull rod head. The installation of the nodular cast iron pipeline can be quickly completed, tight connection after installation is ensured, and the installation efficiency is high.

The invention discloses a pretreatment intelligent machining device for a nodular cast iron pipe inner wall spraying procedure, and relates to the technical field of nodular cast iron pipe inner wall machining and grinding devices. The pretreatment intelligent machining device for the nodular cast iron pipe inner wall spraying procedure comprises a base, the top of the base is fixedly connected with an adjusting supporting beam, the interior of the base is fixedly connected with a rotating fixing mechanism, the interior of the adjusting supporting beam is rotationally connected with a driving mechanism, and the driving mechanism comprises a first rotating lead screw. According to the pretreatment intelligent machining device for the nodular cast iron pipe inner wall spraying procedure, a first sliding block is arranged, and after a fourth motor is started, a conical push block pushes the first sliding block to move, so that the inner wall of a nodular cast iron pipe is conveniently and preliminarily ground by a spherical first grinding block; and large dynamic load fluctuation caused by unevenness of the inner wall during finish machining is avoided, so that the risks of vibration and deformation in the machining process are reduced, and the overall machining efficiency of the device is improved.

The utility model provides an automatic ladle slag removal device for nodular cast iron pipe production, and relates to the technical field of nodular cast iron pipe production, the automatic ladle slag removal device comprises a hoisting assembly and a bearing feeding and discharging component, the bearing feeding and discharging component assembled by bolts is arranged on the inner side of the lower portion of the hoisting assembly, and a cleaning mechanism is arranged at the output end of the inner side of the hoisting assembly. The feeding and discharging bearing part comprises an annular sleeve seat, a hinged movable strip, a ladle cylinder, an output nozzle, a hinged base, a pull rod, a hydraulic telescopic arm and an electric hinged seat; the annular sleeve seat is arranged on the inner side of the lower part of the hoisting assembly; according to the cleaning device, the first matching plate at the output end of the first hydraulic cylinder is mainly utilized to move into a ladle cylinder, and dirt which is difficult to scrape can be scraped through rotation of the rotating motor, the rotating sleeve, the servo motor, the vertical cleaning knife and the transverse cleaning knife; and an electromagnetic suction plate on one side of the second anastomosis plate can adsorb the cleaned iron dirt, so that the cleaning efficiency of the equipment is improved.

The automatic positioning control system comprises a plurality of light mark boxes, pipe diameter recognition probes, position recognition cameras and a control module, the light mark boxes and production conveying lines are arranged on the two sides of a flat car track respectively, and the light mark boxes and the production conveying lines are arranged in a one-to-one correspondence mode; each light mark box is connected with the light mark control box, each light mark box is provided with an identification color plate, colors displayed by the light mark boxes through the identification color plates are different, the pipe diameter identification probe and the position identification camera are arranged on the pipe conveying flatcar, the pipe diameter identification probe is arranged corresponding to pipelines stored on the pipe conveying flatcar, and the position identification camera is arranged corresponding to the light mark boxes. The pipe diameter identification probe and the position identification camera are connected with the control module; standardized manufacturing is adopted, and the more on-site parking positions are, the lower the cost is; automatic control is adopted, a visual system is combined, on-site manual intervention is effectively reduced, the operation efficiency of the small flatcar is improved, and on-site labor cost can be reduced.

The application provides an outer wall protection device for a socket metal pipe, the outer wall protection device is a ring segment with the same center as the socket metal pipe to be protected, a hollow cylinder is formed by more than two ring segments, the socket metal pipe is sleeved in the hollow cylinder, the outer diameter of the hollow cylinder is greater than or equal to the outer diameter of the pushing flange and smaller than the maximum diameter of the socket segment sleeved in the hollow cylinder; the outer wall protection device comprises a first ring segment and a third ring segment; the first ring segment is adjacent to the reinforcing support during installation, and the third ring segment is matched with the socket segment. The application eliminates the longest curing process in the production of nodular cast iron pipes, shortens the pouring link in the preparation process of the nodular cast iron pipes, forms the required structure of the outer wall and the socket metal pipe in stages, and thus improves the production efficiency of the metal pipe.

The utility model discloses an auxiliary device for butt joint of bell and spigot joints of nodular cast iron pipes, which relates to the technical field of cart handles and comprises fixing clamps, the fixing clamps are symmetrically arranged, chains are movably connected to the tops and the bottoms of the fixing clamps, and a group of symmetrical guide rails are fixedly connected to opposite sides of the fixing clamps. Sliding mechanisms are arranged on the opposite sides of the fixing clamps, bearing mechanisms are arranged at the tops of the sliding mechanisms, rotating rods are rotatably connected to the bottoms of the sliding blocks, driving mechanisms are fixedly connected to the tops of the bearing mechanisms and the sliding mechanisms, and check blocks are slidably connected to the corners of the bottoms of the sliding mechanisms. According to the utility model, the bearing mechanism, the adjusting rod and the inclined surface are in threaded transmission fit, manual rotation is converted into vertical fine adjustment of the lifting block, and low-friction rolling of the rolling ball is combined, so that the pipeline axis is quickly aligned with the original bell and spigot, and the problem of time consumption caused by repeated trial and adjustment of traditional manual heightening is solved.

The utility model discloses a corrosion-resistant spheroidal graphite cast iron pipe with high strength and high explosion-proof performance, which comprises a first pipeline, a second pipeline and a rubber sleeve, a flange is arranged on one side of the outer surface of the second pipeline, a chamfer is arranged on one side of the inner surface of the flange, and the rubber sleeve can be clamped on the inner side of the flange. And one side of the outer surface of the flange is in threaded connection with a bolt. According to the corrosion-resistant spheroidal graphite cast iron pipe with the high strength and the high explosion-proof performance, through the arrangement of the first pipeline, the second pipeline, the rubber sleeve, a flange and a bolt, when the corrosion-resistant spheroidal graphite cast iron pipe is used, a user needs to connect the spheroidal graphite cast iron pipe, the bolt is rotated to be loosened, the flange is opened towards the two sides, and the second pipeline penetrates through the flange and the interior of the rubber sleeve; one side of the second pipeline is in contact with one side of the first pipeline, a user rotates the bolt to enable the flanges on the two sides to contract, a chamfer is arranged inside, the rubber sleeve is extruded towards the middle, the rubber sleeve is attached to the outer wall of the second pipeline, and the rapid connection effect is achieved.

The utility model discloses a prefabricated calandria anti-floating fixing device which comprises two fixing frames, a plurality of metal ribs are arranged between the inner walls of the two fixing frames, two anti-floating plates are arranged on one side of each fixing frame, and supporting ribs are arranged at the bottom ends of the four anti-floating plates. Four supporting ribs are arranged between the two fixing frames, steel balls are arranged at one ends of the four supporting ribs, four wrapping plates are arranged between the inner walls of the two fixing frames, a plurality of side plates are arranged on one sides of the four wrapping plates, and an anti-floating plate, the supporting ribs, the steel balls, the fixing columns and first cast iron pipes are arranged, so that the anti-floating plate and the steel balls are connected through the supporting ribs; the two steel balls are located on the two sides of the fixing frame correspondingly and suitable for the environment where water flow is strong and the environment can be affected by buoyancy, the gravity of the prefabricated calandria body can be enhanced through matched use of the first cast iron pipes and the four steel balls, the prefabricated calandria body can be kept at the preset position, and it is ensured that the prefabricated calandria body cannot float upwards due to external force.

The utility model relates to the technical field of nodular cast iron pipe fittings, in particular to a sand cleaning device suitable for the surface of a nodular cast iron pipe fitting, which comprises a sand tank, a sand cleaning station arranged in the middle of the sand tank, preparation stations arranged on two sides of the sand cleaning station, and two groups of rotatable nodular cast iron pipe fitting rotating clamping tables, the two nodular cast iron pipe fitting rotating clamping tables can be horizontally moved as a whole and can be arranged at a sand cleaning station and one of the preparation stations correspondingly, and the upper portion of the sand cleaning station fixedly communicates with a sand cleaning box with inlets and outlets formed in the bottoms of the two sides; the nodular cast iron pipe fitting sand removing device is simple in structure, sand on the inner wall and the outer wall of a nodular cast iron pipe fitting can be conveniently and continuously removed, the sand removing energy consumption is reduced, the occupied area is reduced, the safety performance is further improved, and abrasion to the nodular cast iron pipe fitting is reduced.

The utility model provides a DN350-800 nodular cast iron pipe wall thickness multi-surface detection device, which comprises a tug device, one side of the tug device is provided with a thickness measuring device, the tug device comprises a rotating disc and a base, the rotating disc is rotatably connected with the base, the rotating disc controls a first motor to rotate through a controller, and meanwhile, the thickness measuring device is connected with the thickness measuring device. A weighing device and a pushing rod are arranged in the rotating disc, a cast pipe is lifted and weighed, the thickness measuring device comprises a fixed rod and a movable rod, and a first laser displacement sensor arranged on the fixed rod is matched with a second laser displacement sensor arranged on the movable rod to measure the thickness of the cast pipe. According to the utility model, the tug device is installed, the cast pipe is moved directionally and at a fixed point, the rotating disc enables the cast pipe to rotate at a specific angle, the function of annularly detecting the wall thickness of the cast pipe is met, the lifting device and the weighing device are installed to meet the weighing function, wall thickness detection data are compared, the pipe weight is matched, and the quality of the cast pipe is judged more accurately.

The invention discloses a nodular cast iron pipe cutting-off process and device based on micro pipe jacking, and the cutting-off process comprises the following steps: conveying nodular cast iron pipes into a pipe feeding mechanism through external conveying equipment, and then conveying the nodular cast iron pipes to a centering mechanism in sequence through the pipe feeding mechanism; the transverse position of the nodular cast iron pipe is adjusted through the centering mechanism, and then the nodular cast iron pipe is fed into the pipe cutting mechanism; and a first rotating assembly in the pipe cutting mechanism drives the nodular cast iron pipe to rotate, and meanwhile, a pipe cutting assembly cuts the outer circle face of the nodular cast iron pipe, so that one end of the nodular cast iron pipe is cut off to form a micro-jacking pipe blank with the specified length. The nodular cast iron pipe cutting device can improve the nodular cast iron pipe cutting efficiency and stability.

The utility model discloses a nodular cast iron pipe fitting elbow joint suitable for complex terrains, which comprises an elbow joint, a pipeline, locking rings and a connecting ring, two ends of the elbow joint are respectively connected with the pipeline through the locking rings, and the locking rings are fixed on the elbow joint through mounting sleeves and locking screws. The connecting ring is connected with the connecting rod in a hanging mode through the hanging groove and matched with the connecting sleeve on the pipeline in a clamped mode, and the connecting rod tensions the connecting ring and the locking ring through the adjusting sleeve and the nut so as to achieve rapid locking. The limiting groove is clamped with a clamping rib on the outer side of the connecting sleeve to limit rotation of the connecting ring, a check ring is arranged on the outer side of the connecting sleeve and used for limiting longitudinal sliding of the connecting ring, the two ends of the bent connector are in sealing fit with a sealing ring through clamping rings to improve the sealing performance, and a reinforced fiber layer is embedded in the sealing ring to enhance the pressure resistance. The bent connector is simple in structure and convenient to install, can achieve rapid locking and efficient sealing of the bent connector and a pipeline, meets the use requirements under the complex terrain environment, and solves the problems that a traditional pipe fitting is loose in connection and poor in sealing performance.

The invention relates to the technical field of pipe welding, and discloses a welding device for hollow cast iron pipe machining, which comprises two hollow cast iron pipes, the opposite ends of the two hollow cast iron pipes are both provided with inclined notches, and the two hollow cast iron pipes with the inclined notches are matched and attached. The outer side walls of the hollow cast iron pipes are coaxially sleeved with fixing assemblies for clamping the hollow cast iron pipes. In the process that the inner wall sliding frame slides on the inner wall of the joint ring under the action of an external driving mechanism, the telescopic metal sheet abuts against the inner wall of the adjusting ring, at the moment, a circuit is in an open circuit state, the electromagnetic generator on the inner wall sliding frame does not generate a magnetic field, and when the inner wall sliding frame slides to the position of the telescopic convex block assembly, the telescopic metal sheet abuts against the inner wall of the adjusting ring. And when the telescopic metal sheet on the inner wall sliding frame is connected with the telescopic convex block assembly, a passage can be generated at the moment, so that the electromagnetic generator on the inner wall sliding frame generates a magnetic field which is the same as that of the magnet block, the welding wire at the corresponding position can be pushed to slide in the radial direction, and then welding is completed.

The utility model relates to the technical field of nodular cast iron pipe brushing equipment, in particular to an automatic nodular cast iron pipe socket brushing device which comprises a fixing base, a brushing unit and a driving unit, and the driving unit is arranged on the fixing base and used for driving the brushing unit to slowly rotate around the axial central axis of a nodular cast iron pipe. The brushing unit comprises a brushing body, the vertical distance between the brushing body and the central axis of the nodular cast iron pipe is equal to the inner radius of the nodular cast iron pipe, a material containing cavity is formed in the brushing body, a feed inlet which is communicated with the material containing cavity and can be closed is formed in the brushing body, and a sponge layer is arranged on the side face, facing the end of the inserting opening, of the brushing body. And the sponge layer is communicated with the material containing cavity and is used for brushing a coating on the socket end part of the nodular cast iron pipe. Due to the fact that the sponge can absorb and store a certain amount of coating, the coating can be released more evenly during brushing, meanwhile, the coating is prevented from dripping, and the automatic brushing effect of the inserting opening end of the nodular cast iron pipe is achieved.

The invention discloses a spraying and centrifuging device and process for a cement mortar lining of a nodular cast iron pipe, and belongs to the field of spraying of a ball pipeline lining. The device comprises a material mixing mechanism, a material conveying mechanism, a spraying mechanism and a centrifuging mechanism; the spraying mechanism is driven by high-pressure air to rotate, and cement mortar is evenly sprayed to the inner wall of the nodular cast iron pipe. The centrifugal mechanism is used for driving the nodular cast iron pipe to rotate and applying a vibration effect; the cement mortar comprises the following components in parts by mass: 100 parts of cement, 30-44 parts of water and 150-200 parts of sand; the nodular cast iron pipe keeps rotating at a low speed, mortar raw materials are evenly mixed through the mixing mechanism and conveyed to the spraying mechanism through the conveying mechanism to be sprayed out, the conveying mechanism moves at a constant speed, mortar is evenly sprayed to the inner wall of the pipeline, and the pipeline rotates at a high speed to further improve lining compactness and surface flatness. The thickness uniformity of the cement mortar lining is effectively improved, the high-speed centrifugation time is shortened, and the lining layering problem is solved.

The invention discloses a nodular cast iron pipe cement lining automatic adjusting system, and belongs to the field of nodular cast iron pipe manufacturing, the nodular cast iron pipe cement lining automatic adjusting system comprises a supporting mechanism and a PLC control cabinet installed on the surface of the supporting mechanism, an adjusting mechanism is installed on the surface of the supporting mechanism, and a feeding mechanism is installed on the surface of the adjusting mechanism; the adjusting mechanism comprises nodular cast iron pipe bodies rotationally connected to the surface of the supporting mechanism in a path array mode, and a feeding pipe is inserted into one nodular cast iron pipe body. Through cooperative use of the devices, the cement flow is monitored in real time based on the industrial high-definition AI recognition camera, the cement output and the rotating speed of the moving wheels are controlled through the PLC control cabinet, and the moving speed of the storage box is adjusted, so that the cement output is matched with the moving speed of the storage box; the amount of cement flowing to the inner wall of the nodular cast iron pipe body from each position of the feeding pipe is more uniform, and meanwhile the real-time scene of the interior of the nodular cast iron pipe body is displayed on a client side.