357 results about "Metal hose" patented technology

The utility model discloses an automatic metal hose grabbing and cutting device which comprises a workbench, a hose guide seat, a lifting mechanism and a grabbing mechanism, the lifting mechanism and the grabbing mechanism are both arranged on the surface of the workbench, the lifting mechanism comprises a lifting support, a lifting motor and a lifting plate, the lifting motor is fixed at the top of the lifting support, and the lifting plate is fixed at the bottom of the lifting support. The output end of the lifting motor penetrates through the top of the lifting support, extends downwards and is connected with a lifting plate, guide rods are arranged at the positions, located on the two sides of the lifting motor, of the top of the lifting support, the lifting plate is arranged on the guide rods in a sliding mode, and the bottom of the lifting plate is connected with a hose cutter. A tool apron is arranged on the portion, below the hose cutter, of the workbench, the grabbing mechanism comprises an X-direction driving device and a first Y-direction driving device, and the first Y-direction driving device is connected with a first pneumatic clamping finger. According to the scheme, the metal hose can be automatically grabbed to the cutting position through the grabbing mechanism, and manual operation is not needed.

The application discloses a kind of thin-walled metal hose automatic welding processing equipment, and the application relates to welding processing technical field, including base, the top of the base two sides are respectively provided with fixed seat and guide rail, the inside of the guide rail is respectively provided with positioning assembly and sliding base, the positioning assembly and sliding base are slidably installed on the top of base by guide rail.This thin-walled metal hose automatic welding processing equipment, by the position of welding assembly, the position of positioning assembly and sliding base is adjusted in guide rail by staff, and by positioning assembly and clamping inner support assembly, metal hose and joint are clamped and fixed respectively, clamping inner support assembly is clamped to joint while supporting in the inside of metal hose, to stabilize support metal hose welding position, prevent joint from being set outside metal hose by welding assembly when welding, the phenomenon that the hose in joint is prone to deformation and cannot be combined with the inner wall of joint to cause welding point position deviation.

The utility model relates to a converter mouth purging device in the converter tapping process, and belongs to the technical field of converter steelmaking in the metallurgical industry. According to the technical scheme, one end of a large rotating arm (4) is rotationally connected to a stand column (1) through a rotating body and a rotating body support, the other end of the large rotating arm (4) is rotationally connected with one end of a small rotating arm (13) through the rotating body and the rotating body support, a universal support (11) is rotationally connected to the other end of the small rotating arm (13) through the rotating body, a positioning sleeve (10) is arranged on the universal support (11), and the positioning sleeve (10) is connected with the stand column (1). The stainless steel purging pipe (7) penetrates through the positioning sleeve (10), one end of the stainless steel purging pipe (7) is connected with the nozzle (5), the other end of the stainless steel purging pipe (7) is connected with the elbow (14) and the control handle (15), and the elbow (14) is connected with the metal hose (16) through the quick connector (17). The device has the beneficial effects that bonded slag or steel at the converter mouth can be automatically, safely and efficiently cleaned, and the normal operation of the converter is ensured.

The invention belongs to the technical field of magnesium desulfurization wastewater treatment, and particularly relates to a magnesium desulfurization wastewater evaporation concentration material transfer anti-crystallization blockage system which comprises an evaporation separator and crystallizers, a circulation pipeline is arranged between an inlet and an outlet of a material transfer pump, and a material transfer pipeline is connected between a material transfer regulating valve and the crystallizers. The circulating pipeline and the branch pipelines are respectively communicated with the material transferring pipeline through branch pipelines, and the circulating pipeline and the branch pipelines are detachable metal hoses; a steam inner pipe is arranged in the material transferring pipeline, a heat preservation layer is arranged outside the material transferring pipeline, and opening degrees of the material transferring adjusting valve and the steam adjusting valve are in linkage control. Compared with the prior art, the device has the beneficial effects that effective anti-blocking prevention and emergency treatment are carried out on materials which are long in material transfer pipeline, rapid in concentration and temperature change and easy to crystallize in multi-point material transfer, cooperative control over the temperature of the separator feed liquid and the temperature of the material transfer pipe feed liquid is achieved, and concentration and temperature monitoring is carried out on the output feed liquid; materials always flow in the material transfer pipeline, and continuous production operation is guaranteed.

The invention relates to the technical field of flexible connecting pipelines, and discloses an asymmetric net sleeve metal hose and a forming method thereof.The asymmetric net sleeve metal hose comprises a corrugated pipe, the two ends of the corrugated pipe are fixedly connected with connecting pipes correspondingly, the outer side of the corrugated pipe is wrapped with a woven net sleeve, and the two ends of the woven net sleeve are fixedly connected with connecting rings correspondingly; the connecting ring is fixedly connected with the connecting pipe, and the woven mesh sleeve is of an unbalanced woven structure. The bending fatigue life of the metal hose is prolonged, the minimum bending radius is reduced, the self-supporting capacity of the metal hose in the specific direction is improved, and the application range of the metal hose is expanded.

The utility model relates to an anti-blow-by coke oven regenerative chamber structure, which is divided into a plurality of different temperature intervals from the lower part of a combustion chamber to the bottom of the regenerative chamber, and sequentially comprises a high-temperature area, a medium-temperature area, a low-temperature area and a low-temperature area from top to bottom, the gas pipeline airflow channels corresponding to all the temperature intervals are staggered, and a high-temperature-resistant metal hose is arranged in the gas pipe brick airflow channel corresponding to the same vertical flame path from top to bottom in a full-length mode; and sliding layers are arranged among the brickworks in different temperature intervals. According to the utility model, gas supply blowby caused by mortar joint tearing or gas pipe brick breakage due to displacement between the upper and lower layer gas pipe bricks in the main wall of the regenerative chamber of the coke oven caused by different expansion during the oven drying period or the residual expansion period of the coke oven can be prevented, and smooth and safe production of the large coke oven is ensured.

The utility model relates to the technical field of sampling devices, and discloses a water quality filtering and sampling device, which solves the problem that the existing water quality sampling device is inconvenient to filter and adjust the sampling depth, and comprises a support table, a water pump, a controller and an L-shaped support frame are arranged at the top end of the support table, and a flexible hoisting mechanism is arranged at one end of the L-shaped support frame. The armored metal hose is arranged on a water inlet of the water pump, the hard sampling water pipe is arranged at one end of the armored metal hose and connected with the supporting table through the lifting driving mechanism, the filtering cover is arranged at the bottom end of the hard sampling water pipe, the flexible hoisting mechanism is composed of a spring, a U-shaped mounting frame and a rotating wheel, and the U-shaped mounting frame is connected with the L-shaped supporting frame through the spring. The rotating wheel is rotationally connected to the interior of the U-shaped mounting frame, and the lifting driving mechanism is composed of a motor mounting sleeve, a servo motor, a driving gear, a lifting supporting stand column, two limiting assemblies and a rack; through the water quality filtering and sampling device, water can be filtered, and the sampling depth can be adjusted.

The application relates to the technical field of welding processing mechanisms, in particular to a gas special superhigh-temperature high-pressure metal flexible connection and a welding processing mechanism, which comprises a welding equipment body, a welding gun body is arranged on the welding equipment body, an operating table is rotationally connected to the welding equipment body, a rotating frame is rotationally connected to the inside of the operating table, a clamping mechanism is arranged on the rotating frame, flanges are movably contacted with the clamping mechanism, metal hose bodies are fixedly connected to the insides of the two flanges, and a base is fixedly connected to the welding equipment body. The setting of the fixing plate and the bag makes the metal hose body have a supporting point, avoids shaking of the metal hose body during rotation, correspondingly prevents position deviation or unstable welding track of the metal hose body during welding, influences the uniformity and the aesthetic property of a weld, and thus the welding quality of the metal hose body and the flanges is improved.

The utility model discloses a sectional type withdrawal and straightening machine fixing water tank which comprises a base (2) fixed on an installation frame (1), a detachable water tank (3) is arranged on the base (2), the water tank (3) comprises a group of square pipes (311), every three square pipes (311) are connected to form a sectional water tank (31), and the sectional water tanks (31) are connected through metal hoses. The segmented water tank (31) is further connected with a connector (4), and the connector (4) is connected with the base (2) through a water inlet and return pipe (5). The utility model has the advantages that the cooling strength can be improved to a greater extent, the on-line temperature is ensured to be below 45 DEG C, the service life of the withdrawal and straightening machine can be prolonged, the quality of a casting blank can be ensured, the replacement is simple and quick, and the working efficiency is improved.

The utility model discloses a joint structure of a metal hose, which belongs to the technical field of metal hoses and comprises a metal hose body, a first inner sleeve, a second inner sleeve, a first outer sleeve and a second outer sleeve. Wherein one end of the first inner sleeve and one end of the second inner sleeve are each provided with a threaded section in threaded connection with the metal hose body, and one end of the first inner sleeve is connected with an annular protrusion; an annular groove matched with the annular protrusion is formed in one end of the second inner sleeve. The first inner sleeve is detachably connected with the second inner sleeve through an elastic buckle mechanism; by means of the design, the metal hose can be rapidly detached, and falling of the metal hose is effectively avoided.

The utility model discloses an automatic cladding device for a metal hose, which comprises a workbench, the upper surface of the workbench is fixedly connected with a first positioning plate, the upper surface of the workbench is fixedly provided with an electric push rod, the left end of the electric push rod is fixedly connected with a second positioning plate, and the right end of the second positioning plate is fixedly connected with a second positioning plate. And a rotating motor is fixedly mounted on the left side surface of the first positioning plate. According to the device, the supporting rod is arranged, the supporting rod is inserted into the hose to support the hose, through cooperation of a positioning groove and a positioning block, the supporting rod can be positioned, the supporting rod rotates along with a sleeve, and through cooperation of an electric push rod and a second positioning plate, the supporting rod can be extruded, so that the supporting rod is clamped; through cooperation of a second bearing and an unwinding roller, a coiled material can be supported and assisted to rotate, through cooperation of a rotating motor, a first bearing and a sleeve, a supporting rod can drive a metal hose to rotate automatically, and the metal hose is automatically coated with a film.

The utility model discloses a metal hose joint capable of realizing quick fastening, which relates to the technical field of metal hose joints, and comprises a female plug and a male plug which are mutually clamped together, a through groove and a side plate are respectively arranged on the outer side of the female plug in an annular array mode, and the male plug is connected with the through groove in an annular array mode. The male plug is inserted into the inner side of the female plug, and an adjustable locker is movably connected into the side plate; the outer side of the female plug is further movably connected with an anti-loosening stopper, the adjustable locking devices are located on the inner side of the anti-loosening stopper in an annular array mode, and the ends of the adjustable locking devices penetrate through the through grooves to be connected with the male plug. According to the utility model, the spring pushes the sliding sleeve to slide on the outer side of the female plug through the elasticity of the spring, and the inner side of the sliding sleeve is attached to the side surface of the rotating pull rod, so that the position of the rotating pull rod is limited, the rotating pull rod is prevented from rotating, and the locking effect on the joint is improved.

The utility model discloses a long cable connecting device for an irradiation-resistant camera, and belongs to the technical field of nuclear waste treatment. The long cable connecting device comprises a connecting assembly, a long cable and a metal hose, the connecting assembly is used for being connected with an irradiation-resistant camera, and the connecting assembly is made of an acid-resistant material; one end of the long cable penetrates into the connecting assembly and is electrically connected with a cable of the radiation-resistant camera, and the other end of the long cable penetrates out of the connecting assembly and is connected with hoisting equipment; and the metal hose is made of an acid-resistant material, is connected to the top end of the connecting assembly, and is used for coating the part, penetrating out of the connecting assembly, of the long cable. According to the utility model, the long cable is separated from the acid mist environment through the metal hose, so that the problems of aging and cracking of the long cable in the acid mist corrosion environment for a long time can be solved, and the stability and reliability of remote monitoring of the irradiation-resistant camera are ensured; and the tension effect at the joint of the long cable and the irradiation-resistant camera can be eliminated, and the long-term sealing effect of the long cable connecting device is ensured.

The utility model relates to the technical field of ball mill feeding, in particular to an auxiliary feeding device of a cement raw material ball mill, which comprises a base and an auger feeding machine hinged to the upper end of the base. A metal hose communicates with the left side of the upper end of the auger feeding machine, a feeding hopper communicates with the upper end of the metal hose, a rotating shaft is rotationally connected into the feeding hopper, a plurality of crushing rods are fixed to the upper end and the lower end of the rotating shaft, and a motor is fixed to the left side of the feeding hopper. The right side of the lower end of the auger feeding machine communicates with a discharging pipe, and the periphery of the discharging pipe is fixedly sleeved with an annular pipe. Cement raw materials are crushed in advance through the crushing rod, the metal hose and the discharging pipe are prevented from being blocked due to the fact that the size of the cement raw materials is too large, feeding smoothness of the auger feeding machine is guaranteed, dust flying into air is reduced, pollution of the dust to the air is effectively reduced, and the service life of the auger feeding machine is prolonged. And the working environment quality can be ensured.

The utility model relates to the technical field of metal pipe fitting machining, and discloses a metal pipe fitting end machining device which comprises a workbench, a working box is fixedly installed on the upper surface of the workbench, a movable door is hinged to the front surface of the working box, a groove shaped like a Chinese character'hui 'is formed in the upper surface of the workbench, and a cleaning mechanism is arranged in the working box. The cleaning mechanism comprises a water inlet pipeline and a drying box, water is sprayed to the end of the polished metal pipe fitting through the water inlet pipeline and a first metal hose, cutting fluid on the end of the metal pipe fitting and chippings left on the end of the metal pipe fitting during polishing are flushed down, and after cleaning is completed, an electric heating wire, a draught fan and an electric telescopic rod can be started, so that the metal pipe fitting is polished. According to the metal pipe fitting end head drying device, the metal pipe fitting end head is dried through the drying device, workers do not need to take down the metal pipe fitting end head, then clean the metal pipe fitting end head and dry the metal pipe fitting end head in time, the influence on the metal pipe fitting end head is prevented, the workload of the workers is reduced, and the machining efficiency of the metal pipe fitting end head is improved.

The application provides a delivery bed with a flushing assembly and belongs to the technical field of delivery beds. The delivery bed with the flushing assembly comprises a bed assembly and a flushing assembly. The bed assembly comprises a bed body and a driving piece. The driving piece is installed at the bottom of the bed body. The flushing assembly comprises a connecting frame, a flushing tank, a rotating rod, a gear, a rack plate, a metal hose and a spray head. The connecting frame is arranged at the bottom of the driving piece. The flushing tank is slidingly arranged in the connecting frame. By arranging the bed body, the driving piece, the connecting frame, the flushing tank, the rotating rod, the gear, the rack plate, the metal hose and the spray head, the driving piece can drive the connecting frame and the flushing tank to move and adjust the position. Then, the rotating rod, the gear and the rack plate can conveniently move out or store the flushing tank. In combination with the metal hose and the spray head, the women who are inconvenient to move on the bed can be flushed, so that the practicability is greatly improved.

This utility model discloses a shapeable metal hose, comprising a single-loop metal hose body formed by spirally winding a metal braid. The metal braid includes a radially extending bend, with an outer braid extending axially connected to the outer end of the bend and an inner braid extending axially connected to the inner end. An inner loop edge is provided at the end of the outer braid not connected to the bend, forming an inner loop groove between the inner loop edge, the outer braid, and the bend. An outer loop edge is provided at the end of the inner braid not connected to the bend, forming an outer loop groove between the outer loop edge, the inner braid, and the bend. The inner loop edge is embedded in the outer loop groove, and the outer loop edge is embedded in the inner loop groove. It also includes a shaping metal wire spirally extending along the metal braid, embedded in the inner loop groove and / or the outer loop groove. This metal hose can be shaped after bending and has good electromagnetic shielding effect, with complete overall function and strong practicality.

A blind hole guiding structural part for a gas hose comprises a guiding part A and a guiding part B. The guiding part A comprises a magnetic suction head A, and the magnetic suction head A is magnetic. The lower part of the magnetic suction head A is connected with a metal hose; a pipeline fixing hoop is arranged below the metal hose; the guide piece B comprises a magnetic suction head B, and a metal hose is arranged at the lower part of the magnetic suction head B. The gas hose blind hole guiding device solves the problem that in the prior art, a gas hose is inconvenient to penetrate through a blind hole, double assemblies penetrate through an open hole respectively, contact adsorption is conducted in a darkroom, the threading difficulty of the blind hole is lowered, the gas hose blind hole guiding device is particularly suitable for blind hole guiding in the multi-bending environment, and the effect of convenient operation is achieved.

The utility model provides sand blasting equipment with a nozzle anti-blocking function, and belongs to the technical field of sand blasting. The sand blasting equipment with the nozzle anti-blocking function comprises a sand blasting structure and a cleaning structure, the sand blasting structure comprises a sand blasting machine, a metal hose, a connecting pipe and a spray head, the two ends of the metal hose are communicated with a discharging port of the sand blasting machine and the connecting pipe respectively, the spray head is communicated with the connecting pipe, and the cleaning structure is arranged on the sand blasting machine. And the cleaning structure comprises a driving assembly and two U-shaped scraping plates, the driving assembly is arranged in the connecting pipe, the two U-shaped scraping plates are connected with the driving assembly, the two U-shaped scraping plates are attached to the inner wall of the connecting pipe, and a feeding port of the sand blasting machine communicates with an external sand blasting tank. According to the sand blasting equipment with the nozzle anti-blocking function, sand on the inner wall of the connecting pipe can be conveniently cleaned, blocking is avoided, and meanwhile the sand blasting effect is improved.

The utility model relates to the technical field of electric dust removal and dust discharge of sintering machine heads, in particular to dust discharge equipment of an electric dust removal suction and discharge vehicle, which comprises a dust bin and the suction and discharge vehicle, and further comprises an inclined insertion pipe, a dust discharge pipe, a connecting pipe and a metal hose which are sequentially arranged between the dust bin and the suction and discharge vehicle, and the venturi tube is arranged between the connecting tube and the ash discharging tube and is used for communicating with the outside and stabilizing the air pressure between the ash bin and the suction and exhaust vehicle. The inclined inserting pipe, the ash discharging pipe, the Venturi pipe, the connecting pipe, the metal hose and various valves which are sequentially arranged from top to bottom are used in cooperation, the metal hose is communicated to the suction and discharge vehicle, then the air inlet of the Venturi pipe is opened, and a sealed ash discharging path can be formed between the ash bin and the suction and discharge vehicle. And the problems that dust leaks into the environment in the dust discharging process, the environment is polluted by raised dust, and the health of dust discharging operators is endangered are solved.

The utility model provides a novel explosion-proof flexible pipe, which relates to the field of explosion-proof flexible pipes, and comprises a metal hose, a protection assembly is arranged on the outer side of the metal hose, two ends of the metal hose are connected with threaded movable joints, the protection assembly comprises an outer rubber layer, an inner rubber layer is arranged on the inner side of the outer rubber layer, and the inner rubber layer is connected with the threaded movable joints. A breathable bag is arranged between the outer rubber layer and the inner rubber layer, mothballs are arranged on the inner side of the breathable bag, a cleaning pipe is arranged on the inner side of the inner rubber layer and is of a pipe body structure, an opening groove is formed in the inner wall of the cleaning pipe, an inserting strip is inserted into a pipe body of the cleaning pipe, and a cleaning strip is arranged on the outer wall of the inserting strip. And a spring strip is arranged in the insertion strip. The mousetrap has the advantages that the cleaning strips are convenient to clean and replace, and rodents such as rats can be prevented from gnawing the mousetrap.

The invention discloses a device for vaporizing and stably conveying dangerous liquefied gas in a gas bottle. The device for vaporizing and stably conveying the dangerous liquefied gas is provided with a liquefied gas bottle, and a movable gas bottle constant-temperature heating device is arranged at the bottom of the liquefied gas bottle; a metal hose is arranged at an outlet of the liquefied gas bottle, a pressure reducing valve is arranged at an outlet of the metal hose, an automatic pressurizing and pressure stabilizing device is arranged at an outlet of the pressure reducing valve, and an automatic gas thermostat is arranged at an outlet of the automatic pressurizing and pressure stabilizing device. The liquefied gas bottle is rapidly vaporized under the constant-temperature condition, the pressurizing device takes compressed air as a power source, loss is reduced, meanwhile, the anti-explosion requirement for equipment is lowered, the purpose of constant temperature and constant pressure is achieved through instrument automation, the risk of dangerous gas leakage is lowered, and guarantee is provided for stable operation of the production process. The device is simple in structure, convenient to operate and low in cost; automatic control can be achieved, the number of manual operation times is reduced, and the risks of misoperation and untimely operation are reduced.

The utility model relates to the technical field of immersed pumps, in particular to a low-temperature corrosive medium working condition cable protection structure. An instrument and an electrical corrugated metal hose are respectively sleeved outside an instrument and a power cable in a pump well; the two ends of the instrument cable are connected with cables on an instrument outside and inside the pump head through connecting cables; the two ends of the power cable are connected with cables outside and on a power structure inside the pump head through connecting cables; and two ends of the instrument and the electrical corrugated metal hose are respectively connected with the top plate component and the pump head end flange. The instrument and the electrical corrugated metal hose are fixed through the cable fixing support and then integrally fixed to the pump head supporting steel wire rope. The technical scheme of the utility model solves the problems that a cable in the prior art is easy to chemically react with a conducting medium to be corroded, the conducting medium enters the cable to damage an insulating layer to cause short circuit of the cable, and the cable has no support amp for a long time; and the service life is shortened due to stress.

The utility model discloses an electrical connector of a micro water pressure temperature sensor for a GIS, which comprises a sensor upper cover, a patch board, an insertion sheet and a wire harness, a step hole is arranged at one end of the sensor upper cover, the patch board is arranged on the step surface of the step hole, the insertion sheet is inserted on the patch board, and the wiring harness is arranged on the patch board. One end of the insertion piece is located in the stepped hole along with the patch board, the other end of the insertion piece is exposed out of the sensor upper cover, the wiring harness is connected to the patch board so as to be connected with the insertion piece, one end of the wiring harness is located in the stepped hole along with the patch board, and the other end of the wiring harness is exposed out of the sensor upper cover. The other end is provided with a wire pressing terminal which is provided with a rubber shell. The stepped hole is provided with an internal thread metal hose connector for connection. The utility model solves the problems that the conventional connecting piece is too complicated and the cost is too high, and provides the electrical joint which is lower in cost and simpler and safer to operate.

The invention belongs to the technical field of hand dryers, and discloses an intelligent lifting type water circulation hand dryer. The intelligent sensing system is used for accurately detecting the height of the hand of a user, and the memory alloy lifting mechanism is controlled to drive the hand dryer body to automatically ascend and descend to the adaptive position matched with the hand of the user. And water resources discharged in the blow-drying process are collected, the discharged water is purified through the filtering circulating system, and then the purified water is stored in the liquid storage tank. The system takes water from the liquid storage tank, needed hot water or cold water is obtained through heating or temperature control treatment and conveyed into the liquid reaction cavity of the lifting mechanism, and the memory alloy is driven to stretch out and draw back so as to drive lifting motion. The hand dryer integrates a detection system, a hand dryer body, a lifting mechanism, a water collecting device, a filtering system, a liquid storage tank, a heating control device and other modules. Wherein the outer surface of the resistance wire adopts a flexible metal hose design, so that the heat transfer efficiency is improved and the dust accumulation influence is reduced.

An equipment lubricating oil adding device belongs to the technical field of oil adding equipment and comprises a motor reducing mechanism, a piston, an oil box, an oil adding pipe, a storage battery, a one-way valve, an oil adding pipe, a buzzer and a trigger switch. The oil filling pipe is a metal hose, an oil filling nozzle is installed at the front side end of the metal hose, and the motor speed reducing mechanism, the piston, the oil box, the oil filling pipe, the storage battery, the one-way valve, the oil filling pipe, the buzzer and the trigger switch are installed together. The angle of the metal hose can be conveniently adjusted, so that an oil nozzle is relatively easier to contact with an oiling point of production equipment, a user operates a power switch, the motor reducing mechanism can drive the piston to move upwards or downwards through the lead screw, and the piston can compress lubricating oil; by means of the lubricating device, convenience is brought to workers, the labor intensity is reduced, the angle of the oil nozzle can be conveniently adjusted, and therefore a better oiling effect can be achieved for related positions of the production equipment.

The utility model discloses a metal hose with a protection effect, which relates to the technical field of metal hoses and comprises a pipeline main body, the pipeline main body comprises a metal hose, a buffer layer and a protection layer which are sequentially arranged from inside to outside, a plurality of buffer air bags are uniformly arranged in the buffer layer, and the buffer air bags are arranged in the pipeline main body. Connecting flanges are arranged at the two ends of the pipeline body, a mounting groove is formed in one connecting flange, and a filter screen is placed in the mounting groove. The buffer layer, the protective layer and the elastic air bag are arranged on the outer side of the metal hose and are used in cooperation, a good compression resisting effect can be provided for the metal hose, and therefore the metal hose can be effectively prevented from being damaged due to compression; a certain filtering effect can be provided for liquid when the metal hose conveys the liquid, so that the cleanliness of the liquid can be improved, and the overall practicability is high.

The utility model relates to a composite device for preventing air leakage and molten steel backflow of a steel ladle pipeline, which is characterized by comprising a steel ladle air brick, a metal hose, a pressure container, a one-way valve, an air inlet pipeline and a quick connector, the number of the metal hoses is two, one end of each metal hose is connected with one independent steel ladle air brick, and the other end of each metal hose is connected to an air outlet of the pressure container. The one-way valve is arranged on an air inlet pipeline of the pressure container in series, and the air flow direction of the one-way valve is in one-way conduction from an external air source to a steel ladle air brick. The air inlet end of the air inlet pipeline is communicated with an external air source through a quick connector. According to the composite device for preventing air leakage and molten steel backflow of the steel ladle pipeline, through unique design and component cooperation, air leakage and molten steel backflow are effectively prevented, production safety and stability are guaranteed, and the maintenance cost is reduced.

The utility model relates to the technical field of metal hose fluid sealing performance testing, in particular to a combined type pressure testing tool which comprises a connector, a sealing ring and a sealing head, a circular groove is formed in one end of the connector, the sealing ring is arranged in the circular groove, and one end of the sealing head is connected in the circular groove in a sliding mode and abuts against the sealing ring. During use, one end of a to-be-tested metal hose is blocked, the other end of the to-be-tested metal hose abuts against the sealing head, and one end of the sealing head slides along the circular groove to extrude the sealing ring, so that the sealing surface between the end part of the metal hose and the sealing head has a certain buffering effect, and the end part of the metal hose is prevented from being damaged; gas is injected into the to-be-tested metal hose through the gas channel on the joint, then the to-be-tested metal hose is put into water, and whether gas leakage bubbles appear in the water or not is observed; according to the utility model, the damage to the end part of the metal hose in the detection process can be effectively relieved, and the completeness of the end part of the metal hose after the test is ensured.

The utility model relates to the technical field of HDPE composite pipes, and discloses a high-strength wear-resistant HDPE composite pipe which comprises an HDPE inner pipe and an outer pipe, the HDPE inner pipe is located in the outer pipe, and an anti-corrosion layer is arranged on the inner side face of the HDPE inner pipe. A wear-resistant layer is arranged on the outer side surface of the HDPE inner pipe; the wear-resistant layer is a structural layer formed by a metal hose or a braided tube; a plurality of fixed supporting rings distributed in the length direction of the outer pipe are further arranged between the wear-resisting layer and the outer pipe. The fixed supporting ring is arranged on the outer surface of the wear-resistant layer in a matched and matched mode. The wear-resistant layer is fixedly connected with the outer pipe through the fixed supporting ring, and a wear-resistant coating is further arranged on the outer surface of the outer pipe. According to the high-strength wear-resistant HDPE composite pipe provided by the utility model, through the selection of a multi-layer wear-resistant structure and special materials and the design of the fixed supporting ring and the wear-resistant coating, the high-strength wear-resistant HDPE composite pipe has remarkable advantages in the aspect of wear resistance.