63results about "Pipe units with cleaning apertures" patented technology

The invention relates to the technical field of water conservancy projects, and discloses a water conservancy project pipeline with a flow monitoring structure, which comprises an engineering pipeline body, the two ends of the engineering pipeline body are of outwards-expanded opening structures, and the surface of the engineering pipeline body is provided with a vertical pipeline to form a three-way pipe structure; and the vertical pipeline of the engineering pipeline body is in threaded connection with an overhaul sealing cover. According to the hydraulic engineering pipeline with the flow monitoring structure, the vertical pipeline of the engineering pipeline body is in threaded connection with the overhaul sealing cover, the overhaul sealing cover is screwed into and seals the opening of the vertical pipeline through threaded connection, and when parts such as a turbine flow meter and an ultrasonic flow meter in the pipeline need to be overhauled, maintained or calibrated and sundries in the pipeline need to be cleaned, the overhaul sealing cover can be replaced; the overhaul sealing cover can be conveniently screwed off, operation is carried out through the vertical pipeline opening, a large number of pipeline parts do not need to be disassembled, overhaul and maintenance convenience is improved, and maintenance cost and time cost are reduced.

An assembly to coupling a pipeline closure with a pipeline closure hub, the pipeline closure hub including a closure hub opening portion and a coupling portion. The coupling including a pipeline closure extension extending from the pipeline closure. The pipeline extension including a junction portion to abut the closure hub opening portion of the pipeline closure hub and a fastener extending around the closure hub.

The utility model relates to the technical field of drainage pipes, and discloses an anti-blocking drainage pipe which comprises a drainage pipeline, an anti-blocking barrel, a water passing groove, a connecting thread, a fixed cover plate, a fixed screw cap, a connecting pipe and a sealing groove. A water passing groove is fixedly formed in the drainage pipeline, a connecting thread is fixedly arranged in the anti-blocking barrel, a fixed cover plate is fixedly arranged at the left end of the anti-blocking barrel, a fixed screw cover is fixedly arranged at the right end of the fixed cover plate, and a connecting pipe is fixedly arranged at the upper end of the drainage pipeline. According to the anti-blocking drainage pipe, the drainage pipe is improved, so that the anti-blocking capacity of the drainage pipe is improved, in the actual use process of the drainage pipe, blocking objects can be rapidly and effectively discharged from the drainage pipe according to needs, and the drainage pipe can adapt to various environments conveniently; and the drainage effect of the anti-blocking drainage pipe is improved.

The utility model discloses a vent pipe for industrial air exhaust, which comprises a plurality of groups of pipelines, the plurality of groups of pipelines are detachably connected, an inner connecting ring is movably connected between every two groups of pipelines, the outer wall of each inner connecting ring is fixedly connected with a rubber pad, cleaning components are arranged on the pipelines, one end of one group of pipelines is detachably connected with an air inlet pipe, and the other end of one group of pipelines is detachably connected with an air outlet pipe. One end of one pipeline is provided with an air inlet assembly, one end of the other pipeline is provided with an air outlet assembly, each pipeline is provided with a fixing assembly, the fixing assemblies are used for connecting the air inlet pipe, the pipelines and the air outlet assemblies, the pipelines can be conveniently spliced, installed and maintained through the fixing assemblies, and meanwhile the pipelines can be conveniently cleaned and maintained through the cleaning assemblies.

The utility model discloses a convenient exhaust valve coal ash cleaning device which comprises an exhaust pipeline, an exhaust valve and a cleaning branch pipe, the exhaust pipeline is provided with the exhaust valve, one side of the exhaust valve is communicated with the cleaning branch pipe, and the end of the cleaning branch pipe is provided with a first flange. A first sealing groove is formed in the end of the cleaning branch pipe, a first sealing ring is arranged in the first sealing groove, a second sealing groove is formed in the end face of the first flange, a second sealing ring is arranged in the second sealing groove, the first flange is fixedly connected with a blind plate flange, the blind plate flange and the first flange are fixedly installed, and sealing installation of the blind plate flange and the cleaning branch pipe is achieved. When ash needs to be cleaned, the blind flange is opened, and air or water is used for cleaning, so that the cost is reduced, the efficiency is improved, and the desired effect is achieved through an easy-to-operate method.

The utility model belongs to the technical field of municipal pipelines, and particularly relates to a municipal conveying pipeline which comprises two water passing pipelines and a connecting pipeline, the connecting pipeline is used for connecting the two water passing pipelines, and the connecting pipeline comprises a pipe body provided with a water inlet pipeline, a water outlet pipeline and a blow-off pipeline; the two connecting pieces are installed on the two water passing pipelines respectively, the connecting pieces are detachably installed on the inner walls of the water passing pipelines, elastic clamping plates are arranged on the inner walls of the connecting pieces, and inserting plates are arranged at the ends, away from the water passing pipelines, of the connecting pieces; the reverse flow cut-off piece is rotatably mounted in the connecting pipe body and is used for blocking the water inlet pipeline; clamping grooves and inserting grooves are formed in the outer wall of the water inlet pipeline and the outer wall of the water outlet pipeline, the clamping grooves are clamped with the elastic clamping plates in a matched mode, and the inserting grooves are inserted with the inserting plates in a matched mode; the connecting pipeline has the advantages that the water inlet pipeline and the water outlet pipeline of the connecting pipeline can be connected with the two water passing pipelines in an inserted mode through the connecting pieces, and operation is easy, convenient and fast.

The invention is suitable for the technical field of drainage pipelines, and provides an anti-crystallization replaceable filling type drainage pipe which comprises an upstream pipe, a downstream pipe, an impurity removal box and a water conveying pipe, and the impurity removal box and the water conveying pipe are arranged between the upstream pipe and the downstream pipe. Wherein a water inlet and a water outlet are formed in the two sides of the impurity removal box correspondingly, and a separation mechanism used for removing floating garbage is arranged in the impurity removal box; a sponge barrel is arranged in the water conveying pipe and used for absorbing water to reduce evaporation and reduce crystallization in the pipe. According to the anti-crystallization replaceable filling type drain pipe provided by the scheme, the hydrophilic polyurethane sponge barrel is filled in the pipeline, so that the problem of blockage caused by crystallization in the pipeline is solved, impurities can be cleaned, and the anti-crystallization replaceable filling type drain pipe is convenient to disassemble and assemble.

The utility model relates to water supply and drainage technical field discloses a filterable water supply and drainage pipeline, including drain pipe, the water inlet end of drain pipe passes through the detachable installation filter component of flange, filter component includes Z type pipe, the inside installation of Z type pipe has the clean filter main part of water body filtration to clean filter main part's cleaning drive end is located in the outer wall surface of Z type pipe, and Z type pipe is close to the one end of clean filter main part filter surface and is provided with the blowhole. The filterable water supply and drainage pipeline, through the rotation of the driving shaft driven by the knob arranged outside, makes the bristle present 360 degrees dead angle rotation cleaning around the filter hole filter surface, guarantees the comprehensiveness of filter hole filter surface end cleaning, avoids the existence of dead angle, and, without disassembling any pipeline component or taking out the filter screen, can realize the cleaning of filter hole outside operation, and the operation time is greatly shortened, simultaneously also maximizes the system downtime, improves the operation continuity of water supply and drainage system.

The utility model discloses water delivery equipment for an intelligent heat supply system, which comprises a water delivery pipeline connected with the output end of the intelligent heat supply system, a partition plate for sealing the pipeline is fixedly arranged in the water delivery pipeline, the outer wall of the lower end of the water delivery pipeline is communicated with a precipitation pipeline and a connecting pipeline, and the connecting pipeline is arranged in an L shape. One end, far away from the conveying pipeline, of the connecting pipeline is communicated with the precipitation pipeline, a connecting disc is fixedly connected to the lower end of the precipitation pipeline, and a filtering mechanism is arranged at the lower end of the precipitation pipeline, extends into the precipitation pipeline and is fixedly mounted at the lower end of the precipitation pipeline through the connecting disc. The problems that when a water conveying pipeline is used for heat supply, impurities exist in conveyed hot water and are easily adsorbed on the inner wall of the pipeline to cause impurity accumulation, the conveying efficiency of the pipeline is reduced and even the pipeline is completely blocked due to the accumulation of the impurities, and the use of a heat supply system is influenced are solved. And manpower and material resources are also needed to dredge the pipeline.

The utility model discloses an electric melting pipe fitting without setting welding time, and belongs to the technical field of electric melting pipe fittings. The pipe fitting comprises a pipe fitting body, the outer side wall of the pipe fitting body is provided with an electrode tip and a temperature sensing electronic element which can be fused when the sensed temperature reaches the set temperature, a resistance wire is embedded in the inner side wall of the pipe fitting body, one end of the resistance wire is connected with the electrode tip, and the other end of the resistance wire is connected with the temperature sensing electronic element; the outer side wall of the pipe fitting body is further provided with an observation hole used for conducting visual inspection on the welding fusion welding area. Welding time does not need to be set, welding can be carried out only by setting welding voltage, automatic circuit breaking can be carried out after welding meets the requirement, secondary welding cannot be carried out, and the conditions of over welding and under welding can be avoided at the same time; a convenient mounting position and a wiring position between the resistance wire and the temperature-sensitive electronic element can be provided for the temperature-sensitive electronic element; and the protection can be provided for electric connection parts such as a resistance wire and a binding post on the wiring terminal.

The utility model discloses a PE (Poly Ethylene) prefabricated hole water hose, which relates to the technical field of irrigation equipment and comprises a water hose main body, a plurality of prefabricated holes are arranged on the water hose main body at intervals, externally inlaid threaded seats are welded at the prefabricated holes by ultrasonic waves, and internal threads are arranged at through holes of the threaded seats. The threaded seat is connected with the first external thread of the connecting pipe through the internal thread, the upper end of the connecting pipe is provided with a second external thread connected with the pipe fitting, the tail end of the connecting pipe is provided with a filtering assembly, and a cleaning assembly is arranged in the connecting pipe. According to the design scheme, the first-stage filter screen filters large-particle silt and impurities, the inclined section at the bottom can prevent the impurities from being attached to the filter screen under the pressure of water flow and blocking the water flow, meanwhile, the impact of the water flow on the first-stage filter screen is relieved, the service life is prolonged, and the water flow drives the scraper to rotate through the impeller and the connecting rod; impurities at the secondary filter screen are scraped, the secondary filter screen is prevented from being blocked, the irrigation effect is prevented from being influenced, the maintenance frequency is reduced, and maintenance and replacement are convenient.

The invention relates to the technical field of valves, in particular to a dual-mode valve structure. Comprising a pipeline body, a first valve assembly, three second valve assemblies, an outlet flange and an inlet flange, and the first valve assembly and the three second valve assemblies are arranged on the pipeline body; the first valve assembly comprises a first valve shell, a first valve element, two first bearings, two first sealing pieces, an impurity smashing unit and a first valve rod, the first valve shell is connected with the pipeline body, the first valve element is rotationally arranged in the first valve shell and located between the two first sealing pieces, and the first valve rod is connected with the first valve element; the first valve element is provided with a plurality of filtering holes, the impurity smashing unit is connected with the first valve shell and located below the first valve shell, and through the arrangement of the structure, the effects that the filtering mode and the free circulation mode can be flexibly switched according to the working condition of a medium, the switching process is stable and free of impact, and the automatic impurity smashing function is achieved are achieved.

The utility model discloses a double-lug-handle type hydraulic turbine steel pipe manhole door compression bolt stretching support which comprises a bearing beam (1), jacks (2) perpendicular to the bearing beam (1) are arranged on the two sides of the upper end of the bearing beam (1), a plurality of sets of balance beam supporting rods (3) perpendicular to the bearing beam (1) are arranged in the middle of the bearing beam (1), and balance beams (4) are arranged at the upper ends of the balance beam supporting rods (3). Ear handles (5) are symmetrically arranged in the balance beam (4), a guide seat (6) is arranged between the balance beam supporting rods (3), and a dial indicator support (7) capable of moving relative to the guide seat (6) is arranged in the guide seat (6). In the process of pulling the manhole door to move stably, the sealing threshold value of the manhole door can be detected, and leakage caused by failure of rubber on the manhole door due to the fact that the manhole door is pulled too tightly is avoided.

The utility model discloses an anti-clogging same-layer drainage pipe fitting with a water seal, which comprises a branch pipe and the water seal, the branch pipe is connected with a main vertical pipe through the water seal, the water seal is of a U-shaped cavity structure partitioned by a middle partition plate, and the water seal is respectively provided with a water inlet and an overflow port on the outer wall of the cavity on two sides of the middle partition plate; the water inlet is connected with a branch pipeline; the overflow port is enclosed by a horizontal pipe wall at the upper part, a side pipe wall and a vertical pipe wall at the lower part; the vertical pipe wall forms an overflow baffle; the water seal is additionally provided with a drainage area at an overflow port, the drainage area is located between the main vertical pipe and the water seal, and the drainage area extends outwards through a horizontal pipe wall, extends downwards and outwards through an inclined wall externally connected with an overflow baffle, and then is connected to the side wall of the main vertical pipe; the lower ends of the inclined walls intersect on the bottom edge of the water passing opening and are in smooth connection with the bottom edge of the water passing opening; the side pipe wall extends and then is connected with two side edges of the water passing opening. The utility model solves the technical problems of pipeline blockage and unsmooth flow of the same-layer drainage pipe fitting with the water seal.

A water conservancy pipeline comprises a pipeline body, the interior of the pipeline body is divided into a filtering cavity I and a filtering cavity II through a filtering plate I and a filtering plate II, a vertical baffle is arranged in the filtering cavity I, a discharging hopper I is arranged below the vertical baffle and in the filtering cavity I, and a discharging opening I communicated with the discharging hopper I is formed in the bottom of the pipeline body; an inverted-L-shaped filtering plate is arranged in the filtering cavity II, a discharging hopper II is arranged below the inverted-L-shaped filtering plate and in the filtering cavity II, and a discharging opening II communicated with the discharging hopper II is formed in the bottom of the pipeline body; the filter plate I can preliminarily filter water, residues left after filtration fall into the discharge hopper I and are precipitated, the residues are cleaned by rotating the cover body, the filtered water is further filtered when passing through the filter plate II, similarly, impurities in the filtered water are cleaned out by rotating the cover body, and therefore the filter plate I can filter the water preliminarily, and residues left after filtration fall into the discharge hopper I and are precipitated. Impurities in water can be effectively treated, and the interior of the pipeline body is prevented from being blocked.

The utility model relates to the technical field of waste gas treatment, and discloses a flow guide structure of waste gas treatment equipment, which comprises a mounting frame, a flow guide mechanism is arranged on the inner side of the mounting frame, a sealing mechanism is arranged at the top of the flow guide mechanism, the flow guide mechanism comprises a conveying pipe, and the conveying pipe is fixedly connected to the inner side of the mounting frame. The waste gas treatment equipment comprises a conveying pipe, a first flow guide plate is slidably connected to the interior of the conveying pipe, a second flow guide plate is slidably connected to the interior of the conveying pipe, and a connecting pipe is fixedly connected to the left side of the conveying pipe. The first guide plates and the second guide plates are distributed on the right side in the conveying pipe in a vertically staggered mode, waste gas can be divided and steered multiple times, the flowing path of the waste gas is changed, the waste gas can evenly enter the conveying pipe at a certain angle, and it is avoided that the waste gas directly impacts the inner wall of equipment or a local area to form turbulent flow; the waste gas is promoted to be fully dispersed in the conveying pipe.

The utility model discloses a seamless steel pipe with a filtering function, and particularly relates to the technical field of seamless steel pipes, the seamless steel pipe comprises a seamless steel pipe body, one side of the outer surface of the seamless steel pipe body is fixedly provided with a maintenance pipe, and the interior of the maintenance pipe is movably provided with a rotating rod; driving plates are fixedly mounted at the opposite ends of the two rotating rods correspondingly, driving rods are fixedly mounted on the opposite sides of the two driving plates correspondingly, and two fixing frames are fixedly mounted on the two sides of the inner wall of the overhauling pipe correspondingly. According to the seamless steel pipe with the filtering function, in the actual work, the filter plate can enter the fixing groove by pulling the pull rod, then the rotating rod is rotated, the rotating rod can drive the driving plate to rotate, the driving rod can push the reciprocating plate to make the reciprocating plate do reciprocating motion, and when the reciprocating plate does reciprocating motion, the filter plate can enter the fixing groove. And the brush plate can be driven to do reciprocating motion to clean the filter plate, so that the filter plate is convenient to clean.

The invention provides a water supply and drainage pipeline convenient for unblocking, and relates to the field of water supply and drainage pipelines. Two water outlets at the right end of the three-way pipe fitting A are respectively connected with a square pipe, and the right ends of the two square pipes are connected with two water inlets at the left end of the three-way pipe fitting B; a water outlet in the right end of the three-way pipe fitting B is connected with a driving box, and the top of the three-way pipe fitting B is rotationally connected with a transmission shaft; through cooperation of the crushing mechanism and the unblocking mechanism, the water supply and drainage pipeline achieves the automatic unblocking effect, manual disassembly and unblocking are not needed, the water supply and drainage pipeline is more convenient to use, and automatic unblocking work is more timely; the problems that after a filter screen in a traditional water supply and drainage pipeline is used for a period of time, in order to prevent the filter screen from being blocked by sundries, the filter screen needs to be detached for blockage removal, blockage removal work of the traditional water supply and drainage pipeline often needs to be manually detached for blockage removal, the operation is too troublesome, and manual blockage removal work is not timely enough are solved.

According to the three-way connector for the central air conditioner drainage system and the cleaning method, the three-way connector comprises a three-way body, a water inlet pipe, a first water outlet pipe and a second water outlet pipe are arranged on three ports of the three-way body respectively, and the joint of the second water outlet pipe and the three-way body is arranged in an arc transition mode. A detachable plug is arranged at an outlet of the second water outlet pipe; the cleaning method comprises the steps that firstly, when the air conditioner pipeline provided with the three-way connector needs to be cleaned, the plug is disassembled manually or through a tool; secondly, a cleaning tool penetrates into the three-way connector and the interior of the central air conditioner pipeline from a pipe opening of the second water outlet pipe for cleaning; thirdly, after cleaning is completed, the plug is installed back to a pipe opening of the second water outlet pipe manually or through a tool; through the technical scheme provided by the invention, the purposes of easy scale cleaning, convenient maintenance and user operation are achieved, and the maintenance cost and the fault risk of the central air conditioner drainage system are reduced.

The utility model provides an expansion joint device which comprises a fixed pipe section and a pair of corrugated pipes connected with the two ends of the fixed pipe section respectively, the two corrugated pipes are further connected with first connecting rings respectively, and the two first connecting rings are used for being connected with pipelines respectively. Wherein the fixed pipe section is further fixedly connected with a leading-in pipe communicated with the fixed pipe section, the leading-in pipe is further detachably connected with an end socket, and the end socket is provided with a head portion which penetrates through the leading-in pipe and extends into the fixed pipe section. The corrugated pipe cleaning device solves the problem that in the prior art, cleaning in the corrugated pipe is complex, and use is not economical.

The utility model discloses a portable sealing tool for a filter and a gland, which comprises a pipeline and a cover plate, the pipeline is communicated with a connecting pipe, a flange is welded on the connecting pipe, a sealing gasket is arranged between the cover plate and the flange, and a first clamping piece and a second clamping piece are clamped outside the cover plate and the flange. The first clamping piece and the second clamping piece are rotationally connected through a first rotating shaft, clamping grooves are formed in the first clamping piece and the second clamping piece, a first fixing seat is fixedly connected to the side end of the first clamping piece, a clamping groove is formed in the first fixing seat, a second fixing seat is fixedly connected to the second clamping piece, and a handle is rotationally connected to the second fixing seat. The handle is rotationally connected with a tensioning piece matched with the clamping groove, and the second fixing seat is fixedly connected with a fixing mechanism for fixing the handle, so that a plurality of bolts are prevented from being disassembled, the cover plate is conveniently and quickly disassembled, and the efficiency of cleaning or replacing the filter is improved.

The utility model discloses a water supply and drainage pipeline prefabricated part which comprises a pipe body, connecting pipes are arranged at the two ends of the pipe body, butt joint grooves are formed in one ends of the connecting pipes, butt joint rings are arranged in the butt joint grooves, cleaning holes are formed in the tops of the butt joint rings, mounting mechanisms are arranged in the butt joint rings, and the mounting mechanisms are used for mounting cleaning equipment or a filter screen. Arc-shaped sealing plates are arranged at the tops and the bottoms of the two corresponding connecting pipes, connecting lugs are arranged at the two ends of each arc-shaped sealing plate, connecting holes are formed in the tops of the connecting lugs, fixing bolts are arranged in the connecting holes, two sealing gaskets are arranged between the two arc-shaped sealing plates, and the two arc-shaped sealing plates are symmetrically distributed up and down. The two sealing gaskets are distributed in a bilateral symmetry mode. By means of the butt joint ring, the butt joint ring can enter the butt joint grooves to be in butt joint, the butt joint ring is installed in the two butt joint grooves in the two connecting pipes, and therefore the two pipe bodies can be conveniently corrected and installed, and the drainage pipeline is conveniently spliced and arranged.

To provide a piping structure that allows inspection and cleaning.SOLUTION: A piping structure according to the present invention comprises a leg joint having a vertical pipe part to which a vertical pipe is connected, a horizontal pipe connection part to which a horizontal pipe is connected, and a bent pipe part connecting the vertical pipe part and the horizontal pipe connection part, wherein the structure further comprises a first support part that connects the horizontal pipe connection part disposed below a floor slab and the floor slab, and, in a side view of a peripheral wall of the bent pipe part and a central axis of the bent pipe part, an inspection port is formed in a region below or outside the central axis.SELECTED DRAWING: Figure 1

The utility model relates to the technical field of conveying devices, in particular to an ammonium sulfate anti-crystallization blockage conveying pipeline. The device comprises a material conveying pipe, a plurality of cleaning grooves are formed in the material conveying pipe at equal intervals, a detachable arc-shaped sealing cover is arranged in each cleaning groove, and a conveying assembly is further arranged in the material conveying pipe. The ammonium sulfate solution is prevented from being hung on the wall and being cooled and crystallized, the inner wall of the conveying pipe can be kept clean, formation of dirt and crystals is reduced, the service life and the maintenance period of the conveying pipe are prolonged, the heating effect of the electric heating wire ensures that the solution is conveyed in a uniform and stable state, and the conveying quality and efficiency are improved. The device has the function of timely cleaning blockage, reduces the shutdown time caused by blockage, improves the production efficiency, can quickly open the arc-shaped sealing cover for cleaning once the blockage occurs, greatly shortens the blockage treatment time, reduces the loss caused by production stagnation, enables the production to return to normal as soon as possible, and improves the production efficiency. And the overall production efficiency is further improved.

A lid (3) adapted for fluid tight sealing engagement with an opening (2) in a closed system where a pressure on an outside of the closed system is higher than a pressure on an inside of the closed system, wherein the lid is arranged to perform a pivoting movement around a pivot axis for opening the lid.

The utility model relates to the field of municipal engineering drainage, and discloses a municipal engineering drainage structure which comprises a pipeline, the right side of the pipeline is fixedly connected with a fixing box, the right portion of the pipeline is communicated with the interior of the fixing box, the lower portion of the fixing box is fixedly connected with a collecting box, and the inner wall of the pipeline is provided with a cleaning mechanism. And the cleaning mechanism comprises a cleaning assembly and a power assembly, the cleaning assembly comprises a grating, the grating is fixedly connected to the inner wall of the pipeline, the inner wall of the fixing box is slidably connected with supporting rods, and the number of the supporting rods is multiple. According to the grid cleaning device, through matched use of the pipeline, the fixing box and the cleaning mechanism, when sundries attached to the grid need to be cleaned, the electric telescopic rod drives the scraping piece to move the sundries on the grid into the fixing box, meanwhile, the blocking plate relieves closing of the pipeline, the sundries are flushed into the collecting box through water flow, and the cleaning efficiency is improved; and the maintenance cost and the labor intensity are also reduced.

The utility model provides a refrigerant R290 pipeline protection assembly, belongs to the technical field of electric automobile pipeline protection, and aims to solve the problems that certain harm is caused to the body and certain potential safety hazards exist when workers inhale excessive R290 during maintenance in the prior art. Comprising a first protection plate, a second protection plate, a refrigerant pipeline body, an overhaul cover plate, a sealing ring, a leakage warning mechanism and an overhaul protection mechanism. The second protection plate is fixedly connected to the front end of the first protection plate through bolts; the refrigerant pipeline body is arranged on the inner side of the first protection plate and the inner side of the second protection plate correspondingly. The access cover plates are fixedly connected to the upper side and the lower side of the front end of the second protection plate through bolts; the sealing rings are fixedly connected to the left ends and the right ends of the first protection plate and the second protection plate correspondingly. The leakage warning mechanism is arranged on the inner side of the second protection plate. And the overhauling protection mechanism is arranged on the inner side of the second protection plate, protection on pipeline overhauling workers is achieved, and the overhauling safety is guaranteed.

An assembly to coupling a pipeline closure (210) with a pipeline closure hub (100), the pipeline closure hub including a closure hub opening portion and a coupling portion. The coupling including a pipeline closure extension (220) extending from the pipeline closure. The pipeline extension including a junction portion to abut the closure hub opening portion of the pipeline closure hub and a fastener (250) extending around the closure hub.

The utility model relates to the field of vertical pipe flow divider, disclose a kind of pneumatic vertical pipe flow divider, including flow divider shell, the inner wall of flow divider shell bottom end is detachably installed with baffle by locking screw, the inside lateral wall of flow divider shell is provided with filter cleaning component, the inside lateral wall of flow divider shell is provided with two groups of sealing ring, the inside lateral wall of rotating ring is fixedly connected with connecting seat, the inside lateral wall of flow divider shell is fixedly connected with filter plate, the inside lateral wall of the dial block is provided with sealing adjustment component.In the utility model, by setting filter cleaning component, utilize filter plate to effectively intercept the impurity in medium, avoid impurity to enter valve assembly and cause abrasion or blockage;Meanwhile, rotating dial block can drive dredging ball synchronous movement with rotating ring, and under the elastic action of reset spring, with filter plate filter hole dynamic contact, realize the automatic dredging of filter hole, effectively prevent filter hole blockage.

TITLE OF THE INVENTION: SYSTEM FOR RECOVERING MACHINING DEBRIS FROM A PIPE, HOLDING DEVICE AND COLLECTION DEVICE FOR FORMING SUCH A SYSTEM, METHOD FOR POSITIONING AND METHOD FOR REMOVING SUCH A SYSTEM A system (100, 300) for recovering machining debris from a pipe (600) which a holding device (100) and a collection device (300) for machining debris: - the holding device (100) being inserted into the pipe (600) through an orifice (601) and comprising: - a tube configured to bear on the pipe facing the orifice, - a retractable mechanism comprising at least two movable support feet around the orifice of the pipe, - a means for deploying the feet, - a means for fixing the collection device, - the collection device (300) comprising a trunk of deformable hollow cone comprising a means of attachment to the holding device,the truncated cone being configured to be inserted through the orifice and to expand inside the piping around the orifice. Figure for abstract: Figure 16,