421 results about "Cast iron pipe" patented technology

The invention discloses a nodular cast iron pipe continuous annealing furnace temperature distribution optimization control system and method, and belongs to the technical field of temperature control, and the system comprises a temperature detection module, a data processing module, a control module and a fault diagnosis module; the temperature detection module is used for collecting temperature data in the nodular cast iron pipe annealing furnace in real time; the data processing module is used for preprocessing and analyzing the collected temperature data and constructing a temperature distribution model; the control module comprises a temperature optimization unit and an energy optimization unit; the temperature optimization unit is used for calculating the temperature adjustment amount according to the real-time temperature distribution condition in the furnace in the length direction, the radial direction and the circumferential direction, and formulating a partition heating and local compensation strategy; the energy optimization unit is used for dynamically adjusting the heating power according to the change of the production takt, and generating a dynamic heating strategy; the fault diagnosis module is used for monitoring the operation state of the nodular cast iron pipe annealing furnace in real time and conducting fault detection.

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 nodular cast iron pipes, in particular to a socket type pipeline connector which comprises a socket, a spigot and a sealing piece, the socket comprises an annular sealing groove, an annular limiting part and a deflection groove which are coaxial, the annular limiting part separates the annular sealing groove and a conical groove, an annular retaining groove is formed in the annular sealing groove, and the deflection groove is formed in the spigot. An annular containing groove is formed by the distance between the annular retaining groove and the annular limiting part. The maximum-diameter port of the conical groove is connected with the annular limiting part; the inner diameter of the annular limiting part is smaller than the maximum inner diameter of the conical groove; the sealing piece comprises a hard rubber ring and a soft rubber ring, the outer ring of the hard rubber ring is arranged in the annular retaining groove, the outer ring of the soft rubber ring is tightly attached to the annular containing groove, the inner diameter of the hard rubber ring and the inner diameter of the soft rubber ring are smaller than the inner diameter of the annular limiting part, and the outer wall of the inserting opening is attached to the inner ring of the soft rubber ring in a sealed mode. Under the condition that the insertion depth of an insertion opening of an existing socket and spigot type pipeline connector into a deflection groove is the same, the deflection angle of the insertion opening in the deflection groove can be effectively increased.

The invention discloses a nodular cast iron pipe machining device, and relates to the technical field of nodular cast iron pipe production, and the nodular cast iron pipe machining device is characterized in that an inner supporting mechanism is prevented from falling off due to the fact that the upper side and the lower side are not fixed due to placement of an iron pipe through a limiting rod and a rotating rod; the complexity and the labor intensity of manual operation are reduced through the self-adaptive inner supporting function, an operator only needs to conduct simple equipment operation and monitoring, the working difficulty and the labor intensity are reduced, the inner supporting plate is made to rotate through the driving disc, and therefore the iron pipe is made to rotate; the polishing mechanism polishes the outer circumferential face of the iron pipe from bottom to top through the reciprocating screw rod, the iron pipe is not fixed through the power gear, the rotating sleeve and the connecting rod after polishing is completed, the iron pipe is conveniently output, contact between an operator and equipment and the iron pipe in the polishing process is reduced, and the polishing efficiency is improved. And the safety accident risk caused by misoperation is reduced.

The invention relates to a nodular cast iron pipe machining cutting device, and relates to the technical field of cast iron pipe production and machining, the nodular cast iron pipe machining cutting device comprises a base, a cutting mechanism for cutting a pipe fitting and a clamping mechanism for fixing and clamping the pipe fitting; the vertical plates are arranged left and right, supporting assemblies for supporting the inner walls of the pipe fittings are fixed to the sides, close to the cutting mechanism, of the vertical plates, and the two supporting assemblies are arranged in a mirror image mode. The supporting assembly comprises a supporting rod and an air bag I; the supporting rods are of telescopic adjusting structures and are fixed to the corresponding vertical plates. The first air bag is of an annular structure and connected to the outer side of the telescopic end of the supporting rod in a sleeving mode, and the inner wall of the pipe fitting is supported through inflation expansion. The technical effects that the interior of the pipe fitting is stably supported during cutting, the quality of a cut pipe opening is improved, the stability during cutting is improved, and the cutting efficiency is improved can be achieved.

The invention provides a centrifugal casting method, device and equipment for a nodular cast iron pipe and a medium, and relates to the technical field of centrifugal casting. The method comprises the steps that analog simulation is conducted on the solidification structure in the centrifugal casting process of the nodular cast iron pipe, and a simulation result of the solidification structure is obtained; aiming at the simulation result of the solidification structure, fitting a mapping relation between each casting process parameter and the grain size of the solidification structure in a plurality of casting process parameters influencing the solidification structure; based on the mapping relation between each casting process parameter and the grain size of the solidification structure, casting process values corresponding to the multiple casting process parameters are determined; and performing centrifugal casting on the nodular cast iron pipe based on the casting process value. By the adoption of the scheme, the problems that due to improper selection of relevant casting process parameters, the solidification structure of the nodular cast iron pipe has the defects of air holes, impurities, shrinkage porosity, shrinkage cavities, hot cracks and the like can be solved, and therefore the quality of the produced nodular cast iron pipe is improved.

The invention discloses a nodular cast iron pipe packaging and warehousing system and stacking equipment applying the system, relates to the technical field of nodular cast iron pipe packaging, and solves the technical problem that an existing nodular cast iron pipe packaging and warehousing technology is insufficient in the aspects of transportation, sorting, stacking and system collaboration.The nodular cast iron pipe packaging and warehousing system comprises a conveying mechanism, and a sorting mechanism is arranged on the right side of the conveying mechanism; the front surface, the right side and the back of the sorting mechanism are each provided with a pipe conveying mechanism, an automatic lifting and batten adding mechanism and a transferring mechanism. Through cooperative work of the mechanisms, the equipment can adjust the supporting height according to the pipe diameter, work conflicts are avoided in combination with an intermittent discharging component, stable and efficient transportation is achieved, and the sorting mechanism collects codes through an industrial camera and is matched with a clamping and discharging component to accurately sort and transport pipe fittings; the whole system is coherent in working process and sufficient in early-stage preparation, has a manual mode and an automatic mode, achieves intelligent control, improves the production efficiency and facilitates data management and source tracing.

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.

A nodular cast iron jacking pipe outer wall rapid forming production device comprises a chassis, a motor base and a demolding hydraulic cylinder are installed on the chassis, a driving motor is installed on the motor base, a driving gear is arranged at the output end of the driving motor and meshed with the side edge of a mold, and the lower portion of the mold is arranged on the chassis. A vibrator is installed on the outer wall of the mold, the demolding hydraulic cylinder is located in the middle of the upper portion of the chassis, a pipe body positioning disc is installed at the top end of the demolding hydraulic cylinder, a pipe body tray is arranged on the pipe body positioning disc, the side edge of the upper portion of the pipe body tray abuts against the bottom of the cast iron pipe body, and a disc pressing mechanism is arranged above the cast iron pipe body. The device has the advantages that demolding operation can be conducted after pouring is completed, the production efficiency of nodular cast iron jacking pipe outer wall concrete can be greatly improved, continuous production can be achieved only through one set of molds of the same specification, the mold utilization rate is greatly increased, the jacking pipe production efficiency is improved, and the daily output of the same specification depends on the number of pipe body trays.

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.

A permanent mold core for nodular cast iron pipe production and a demolding method thereof relate to the technical field of nodular cast iron pipe production, the permanent mold core abuts against the rear side of a cover plate in a pipe mold and comprises a plurality of arc-shaped core blocks, the arc-shaped core blocks can define an annular structure, and the inner sides of the arc-shaped core blocks are axially and detachably connected with supporting structures capable of supporting the arc-shaped core blocks. The supporting structures can abut against the positions between the arc-shaped core blocks and the cover plate, can be matched with the first disassembling assemblies and can move away from the arc-shaped core blocks in the axial direction under the action of the first disassembling assemblies, clamping structures are further arranged on the inner sides of the multiple arc-shaped core blocks correspondingly, and the clamping structures can be matched with the second disassembling assemblies. And the arc-shaped core block can be driven to move towards the circle center direction under the action of the second dismounting assembly, and can also move towards one side far away from the pipe die. The arc-shaped core block taking-out device not only realizes complete taking-out of the arc-shaped core block, but also simplifies the taking-out process of the arc-shaped core block, reduces the production cost and improves the production efficiency.

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 invention belongs to the technical field of nodular cast iron pipe machining, and particularly relates to a nodular cast iron pipe product based on composite material outer spray paint and a manufacturing process. The manufacturing process comprises the following steps that S1, thermal refining, inoculation and spheroidizing are conducted on molten metal; s2, casting of molten metal and cooling of the nodular cast iron pipe; s3, annealing heat treatment; s4, shot blasting treatment is conducted on the outer wall of the nodular cast iron pipe; and S5, the outer wall is subjected to two-layer cross winding with the included angle of + / -50-70 degrees with the straight section of the pipe body, and finally, after one-layer annular winding perpendicular to the straight section of the pipe body is conducted, outer surface resin curing, lining layer coating and paint spraying are conducted. According to the method, the anti-corrosion treatment is carried out twice, the service life of a cast pipe product under the severe condition is guaranteed through multi-coating anti-corrosion, the service life of the cast pipe is prolonged, and consumption of steel resources is greatly reduced.

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 invention discloses a large-deflection-angle ductile cast iron pipeline flexible connector which comprises a bearing head and a plug, the connector position of the bearing head is a spherical bell mouth, a spherical ring is installed in the spherical bell mouth, the plug is installed in the spherical ring and connected with the bearing head, and the spherical ring is matched with the spherical bell mouth at the joint of the plug and the bearing head. According to the T-shaped connector, the connector allowable deflection angle is increased, the insertion depth of the plug is increased through the spherical ring and the spherical bellmouth, the larger deflection angle and length compensation are achieved compared with a common T-shaped connector, and the occurrence of pipeline water leakage accidents caused by uneven settlement in mountainous regions, marshlands and earthquake-prone regions is avoided by increasing the deflection angle.

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.