1557results about How to "Easy to replace and maintain" patented technology

The invention provides an unmanned aerial vehicle assisted sewage pipeline leakage inspection system and device, and relates to the field of sewage pipeline leakage inspection, an unmanned aerial vehicle inspection module is equipped with a flight control system and an autonomous obstacle avoidance system, and flexibly shuttles back and forth in a complex sewage pipeline environment; the multi-modal sensor array module is integrated with a visible light camera, an infrared thermal imager, a laser range finder, a gas sensor and an acoustic sensor and is used for multi-dimensional data acquisition. Through the unmanned aerial vehicle inspection module, the multi-mode sensor array module, the AI intelligent analysis engine module and the remote intelligent monitoring center module, the intelligent level and efficiency of sewage pipeline leakage inspection are remarkably improved, leakage is accurately recognized and positioned, inspection data are recorded in an omnibearing mode, and the inspection efficiency is improved. The inspection strategy can be automatically adjusted according to real-time data and environment information, and a more efficient and intelligent solution is provided for management and maintenance of urban sewage pipelines.

The utility model discloses a novel humidity sensor, which comprises a shell and a bottom box, and a humidity sensing module is fixedly arranged in the shell. The beneficial effects of the utility model are that when using, staff can start the electromagnet and the temperature sensing module through the switch, the electromagnet is started to attract the iron ring through magnetic force, the iron ring moves upwards to pull the side cylinder to move upwards, the side hole is opened, ventilation is carried out, external air enters the housing, and the humidity sensing module detects the air humidity; when the humidity sensing module is not used, the switch is turned off, the electromagnet is powered off, the spring rebounds, the inner rod and the side cylinder are pulled to reset, and the side hole is closed, so that external air is prevented from entering the shell, and the situation that the humidity sensing module is damaged and the service life is affected due to the fact that humid air continuously affects the temperature sensing module is avoided; the device is quick in action, high in working efficiency, simple in structure, low in manufacturing cost and use cost and very convenient to use.

The utility model discloses a new energy automobile battery anti-collision detection device which comprises a base, the top of the base is connected with a detection box, an anti-collision detection working area is formed in the detection box, and the anti-collision detection working area is provided with a working table assembly which comprises an adsorption table used for placing and adsorbing a battery to be detected; the positioning and reinforcing assembly is used for positioning and reinforcing the to-be-detected battery on the adsorption table; and the collision test assembly is arranged above the workbench assembly, and performs battery anti-collision detection by controlling a counterweight test block to fall to collide with the to-be-detected battery. According to the utility model, the workbench assembly, the positioning and reinforcing assembly and the impact test assembly are arranged in the anti-impact detection working area, so that the battery can be positioned, clamped and fixed, the anti-impact test can be carried out on the battery through the free falling of the counterweight test block, the structure is simple and practical, and the anti-impact detection of the battery can be safely and reliably completed.

The utility model discloses a medium-frequency power supply case with a buffering and damping mechanism, which comprises a cabinet body, a mounting frame, a strip-shaped sliding block, a power supply body, a connecting mechanism, a fixing plate and an inflatable bag, when a whole device needs to be carried, the inflatable bag is inflated through an air tap, and the inflatable bag is inflated to be propped against the end surfaces of a top frame and a bottom frame; a power supply device body on a mounting frame in a cabinet body has good impact resistance by matching with a telescopic rod and a sleeve, the power supply device body is prevented from being damaged in the whole carrying process of the device, a binding rod is arranged on a fixing plate, an inflation bag is bound to the binding rod through a binding belt, and the inflation bag belongs to a quick-wear part and is not prone to damage. The inflatable bag is bound on the fixing plate, maintenance and replacement of the inflatable bag are facilitated, and when the power supply body is installed on the installation frame, the top frame, the bottom frame and the installation frame can be taken out from the cabinet body integrally, so that installation of the power supply body on the installation frame and wiring between the power supply bodies are facilitated.

The utility model discloses an energy storage device convenient to maintain. The energy storage device comprises a protective shell, a control assembly and an energy storage assembly. At least two containing cavities are formed in the protective shell, the adjacent containing cavities communicate with each other, and inlets and outlets communicating with the containing cavities in a one-to-one correspondence mode are formed in the surface of the protective shell. The control assembly and the energy storage assembly are arranged in the corresponding containing cavities, the control assembly and the energy storage assembly can slide in the direction close to or away from the inlet and outlet, and the control assembly is electrically connected with the energy storage assembly. The face, away from the containing cavity, of the control assembly and the face, away from the containing cavity, of the energy storage assembly are each provided with a baffle, and the baffles are matched with the inlets and outlets in size and shape. The energy storage equipment is convenient to replace and maintain, the battery can be replaced at any time when the power is off, and the durability of the product is improved.

The invention relates to a straight web steel-concrete composite beam connecting structure and a construction method thereof, and belongs to the technical field of bridge engineering.The straight web steel-concrete composite beam connecting structure comprises a prefabricated bridge deck slab, a steel beam and a locking connecting assembly used for penetrating, locking and connecting the prefabricated bridge deck slab and the steel beam, and the locking connecting assembly comprises a connecting sleeve rod, a pressing rod, a pressing spring, a wedge-shaped block and a locking ball; a threaded hole for threaded connection of the connecting sleeve rod is formed in the steel beam, a connecting hole for insertion of the connecting sleeve rod is formed in the prefabricated bridge deck slab, the pressing rod is coaxially arranged in the connecting sleeve rod, the pressing spring is arranged on the pressing rod in a sleeving mode, and the wedge block is arranged at one end of the pressing rod. The locking ball is located between the pressing rod and the connecting sleeve rod and located between the pressing rod and the wedge-shaped block, the wedge-shaped block is provided with a wedge-shaped face, the wedge-shaped face abuts against the locking ball, and a locking hole for the locking ball to stretch out is formed in the connecting sleeve rod. The locking device has the advantages that locking connection operation is simple and convenient, the locking effect is good, the locking device is suitable for assembly construction, and meanwhile, disassembly and maintenance of the local prefabricated bridge deck slab are facilitated.

The utility model relates to the technical field of cleaning equipment, in particular to a hinge device for a scrubber, which comprises an upper connecting main body, a shell connecting piece and a lower connecting main body, the upper connecting main body is used for being detachably connected with a connecting rod of the scrubber; the lower connecting main body is used for being detachably connected with a mop head of the scrubber; the shell connecting piece is used for fixedly connecting the upper connecting main body and the lower connecting main body at an angle; and a scrubber water pump circulating connecting pipeline and a circuit for connecting the water pump with a source are accommodated in the upper connecting main body and the lower connecting main body. The upper connecting body and the lower connecting body of the hinge device are detachably connected with the scrubber connecting rod and the scrubber mopping head, and meanwhile a scrubber water pump circulating connecting pipeline and a water pump and source connecting circuit are contained in the hinge device. The technical problem that an existing scrubber hinge device is low in maintenance and replacement efficiency is solved.

The utility model relates to the technical field of cleaning equipment, in particular to a hinge device and a scrubber, the hinge device comprises a rotary hinging body and a connecting body, and the connecting body is used for being clamped with a vertical rod; the rotary hinge body is used for being hinged to a scrubber mopping head. One end of the connecting body is rotationally clamped with the rotary hinging body at a bending angle; and a scrubber water pump circulating connecting pipeline and a circuit for connecting the water pump with the battery are accommodated in the connecting body and the rotary hinging body. According to the hinge device, the vertical rod and the mop head of the scrubber are detachably connected through the connecting body and the rotating hinge body of the hinge device, meanwhile, a scrubber water pump circulating connecting pipeline and a circuit for connecting a water pump and a battery are contained in the hinge device, and the technical problem that an existing scrubber hinge device is low in maintenance and replacement efficiency is solved.

The utility model discloses a printing wastewater purification device which comprises a treatment box, a screening mechanism for screening and filtering wastewater is mounted in the treatment box, and a stirring mechanism for accelerating wastewater reaction is arranged at the position, below the screening mechanism, of the treatment box. An output shaft of a driving motor in a stirring assembly drives a rotating shaft and a stirring rod to rotate, an auxiliary transmission wheel connected with the end of the rotating shaft in a sleeving mode is matched with a main transmission wheel through a toothed belt to drive a transmission rod and two cams connected with the outer wall of the transmission rod in a sleeving mode to rotate, and the two cams continuously rotate to drive a screening plate to slide up and down in a treatment box; according to the waste water treatment device, large impurities in waste water are screened and filtered through the top-slope-type screening plate, the waste water falls into the bottom in the treatment box, the reaction of the waste water and reaction agents is accelerated through stirring of the stirring rods, the waste water treatment efficiency is improved, the large impurities slide to the cleaning opening and can be cleaned through the maintenance door, and meanwhile, due to the arrangement of the linkage mechanism, the waste water treatment device has the advantage of saving energy consumption.

The invention discloses a gripper of a bag breaking machine, and relates to the field of bag breaking machines, and the gripper of the bag breaking machine is characterized in that the gripper comprises a bag grabbing part and a shaking part, the bag grabbing part comprises a bag returning assembly, the bag grabbing part comprises a support plate, two claw thorn rows and two claw thorn rotating air cylinders, and the two claw thorn rows are both located below the support plate; the two claw thorn rows are rotationally connected with the support plate, the connecting positions are located at the two ends of the support plate, the claw thorn rotating air cylinders are used for driving the claw thorn rows to rotate, and claw tips of the two claw thorn rows are opposite after the two claw thorn rows rotate. The two claw thorn rows are turned outwards, the tip ends of the claw thorn rows can support the edge of a material bag, the problem that materials are prone to being left due to the fact that the corners of the material bag and the multi-layer material bag fall down is solved, the materials can be saved, and waste is avoided.

The utility model discloses a sewage purification device and relates to the technical field of sewage treatment, the sewage purification device comprises a fixed box, one side of the fixed box is provided with a filtering mechanism for filtering impurities in sewage, through the arrangement of a filtering belt, a scraping plate, a cleaning brush and the like, a motor is started to drive a transmission roller to rotate, and the sewage is purified. The filter belt is a transmission center of the transmission roller and the guide roller, so that the transmission roller and the guide roller rotate together, sewage is filtered through the filter belt, and along with the circular motion of the filter belt, impurities which are not easy to attach to the filter belt and floating objects which are easy to attach to the filter belt can fall into the collection box along with the circular motion; and along with the continuous circular motion of the filter belt, the filter belt which is subjected to wall scraping cleaning by the scraping plate is subjected to wall brushing cleaning again by the cleaning brush, so that the impurities in the sewage are filtered, the impurities on the filter belt are cleaned and collected, blockage is avoided, the sewage filtering efficiency is improved, and the practicability is high.

The utility model relates to the technical field of air conditioning units, and discloses a roof type air handling unit which comprises a main body, a base structure used for supporting is arranged at the bottom of the main body, the base structure comprises base plates, a supporting body and cushion blocks, the four base plates are arranged at the bottom of the main body, every two base plates form a group, one supporting body is arranged between every two base plates, and the cushion blocks are arranged on the supporting body. A plurality of supporting points are formed between the supporting body and the two base plates, the supporting body can support the base plates and extend and deform, the cushion blocks are detachably installed at the bottoms of the base plates, the supporting body can be extruded by the two base plates to deform in the vertical direction through deformation of the supporting body, and meanwhile the supporting body can also extend in the horizontal direction. Furthermore, the supporting body can change the vibration frequency of the main body in the vertical and horizontal directions in the working process, the resonance of the main body and the base plate is inhibited, the vibration noise generated to the building in the working process of the main body is reduced, and better supporting and protecting performance is achieved for the main body.

The utility model relates to the technical field of chemical laboratory equipment, and discloses tail gas treatment equipment for a chemical material laboratory, which comprises a base, a bearing plate is fixedly mounted at the left end of the upper part of the base, a filter is fixedly mounted at the upper part of the bearing plate, and a filter plate is movably sleeved in an inner cavity of the filter; a cover plate is fixedly installed at the upper end of the filter plate and arranged on the upper surface of the filter, a handrail is fixedly connected to the upper portion of the cover plate, a first valve is fixedly installed on the right portion of the filter, and a combustion chamber is fixedly installed on the right portion of the first valve and fixedly installed on the upper portion of the base. Combustion devices are fixedly installed on the upper portion and the lower portion of an inner cavity of the combustion chamber correspondingly, impurities in tail gas are removed through filtering, the phenomenon that the impurities interfere with tail gas purification is avoided, harmful gas in the tail gas is oxidized through the combustion devices, heated tail gas catalyzes follow-up chemical treatment, and quantitative gas is input into a treatment device through a buffer. And the tail gas fully reacts with the treating fluid.

The utility model belongs to the technical field of online transmission of new energy automobile battery packs, and discloses a heavy-load friction power and free roller way suitable for battery pack assembly, which comprises a conveying unit with a roller way, the conveying unit is provided with an open slot, and a roller combination is mounted in the open slot; the power and free transmission shaft is sleeved with the power and free unit, and the power and free unit is meshed with the roller combination to control starting and stopping of the roller combination. By arranging the power and free unit, when the load torque is larger than the friction torque, the power and free unit enables the roller combination to stop moving, at the moment, the power and free function is achieved, friction between the roller combination and the friction face of the tray where the battery pack is placed is reduced, and therefore the service life of the conveying equipment is prolonged.

The utility model relates to the technical field of electromagnetic heating furnaces, in particular to a furnace body of an electromagnetic heating furnace, which comprises an integrated control base, an outer shell and an inner shell, a display panel is arranged on the outer side of the integrated control base, a control panel is arranged on the outer side of the integrated control base, and the outer shell is fixedly connected to the outer side of the upper end of the integrated control base. A high-temperature-resistant coating is arranged on the outer side of the shell, a partition plate is fixedly connected to the inner side of the shell, the side, away from the integrated control base, of the partition plate is tightly attached to the metal ceramic barrel, a limiting rod is slidably connected to the inner side of the metal ceramic barrel, a heat preservation barrel is fixedly connected to the outer side of the limiting rod, and a heat conduction barrel is fixedly connected to the inner side of the heat preservation barrel. Through the arrangement of a high-temperature-resistant coating, a partition plate, a metal ceramic barrel, a limiting rod, a heat preservation barrel, a heat conduction barrel, an electromagnetic pipe, a sensor, a snap spring for a hole and a lifting ring, the inner side of the induction cooker body can be rapidly and uniformly heated, a user can conveniently replace and repair damaged components to a great extent, and the damaged components can be maintained and maintained at any time.

The utility model provides a film slitting mechanism, and belongs to the technical field of film processing, the film slitting mechanism comprises a rack and an inflatable shaft at the top of the rack, the top of the rack is provided with a sliding groove capable of sliding in the vertical direction, the bottom of the sliding groove is provided with a cutting assembly, the cutting assembly comprises a plurality of blade seats arranged in parallel, and the bottoms of the blade seats are connected with blades in a clamped mode; a vertically-installed rotating shaft is arranged on the side wall of the blade seat, and a connecting rod is hinged to the outer side of the rotating shaft. According to the scheme, the spring and the limiting plate are arranged, the limiting plate and the spring are both arranged at the top of the blade seat, the limiting plate is extruded through the spring so that the limiting plate can downwards extrude the blade seat, the blade seat can be attached to the bottom of the sliding groove, and stable limiting of the blade seat is achieved through friction force between the limiting plate and the blade seat; therefore, the condition of inaccurate segmentation caused by horizontal deviation of the blade seat is prevented.

The invention discloses a riveting and oil injection integrated device which comprises a fixing frame and a control device which form a riveting machine, a riveting table is arranged in the middle of the fixing frame, a riveting head capable of moving up and down is arranged at the top of the fixing frame, an oil injection pipe is arranged on the riveting head, and the riveting and oil injection integrated device further comprises an oil supply mechanism. The oil supply mechanism comprises an oil storage tank, an outer oil conveying pipe and an inner oil conveying channel which are sequentially connected, an oil conveying pump is arranged in the oil storage tank, the inner oil conveying channel is arranged in the rivet joint, the oil injection pipe is a hollow pipe, and the end of the oil injection pipe is communicated with the inner oil conveying channel in the rivet joint. After the control device controls the riveting head to press downwards, the oil delivery pump is started and kept for 0.5-2 s, and oil injection is completed; a traditional riveting head is improved, through the oil injection pipeline additionally arranged in the riveting head and the oil injection pipe connected with the oil injection pipeline and capable of discharging oil, the device can inject oil to a riveting point while riveting is conducted, procedures and manpower are saved, and the production time is shortened.

The utility model discloses a directly-buried prefabricated thermal insulation pipe, and belongs to the technical field of thermal insulation pipes. Comprising a first thermal insulation pipe, a second thermal insulation pipe is arranged on one side wall of the thermal insulation pipe, a connecting sleeve is arranged on the circumferential outer wall of the first thermal insulation pipe, and push rods are symmetrically embedded in the circumferential outer wall of the connecting sleeve. By pulling the push rod and inserting the second thermal insulation pipe into the connecting sleeve, pushing the limiting ring by the first spring to drive the push rod to move towards the interior of the connecting sleeve, and pushing the push block by the second spring to limit the limiting block, the second thermal insulation pipe can be quickly mounted, and meanwhile, the second thermal insulation pipe can be quickly mounted by pushing the connecting sleeve leftwards and pulling the push rod upwards to pull out the second thermal insulation pipe. The thermal insulation pipe II can be quickly disassembled; the arc-shaped rubber plate is bent under stress and can buffer the inner pipe, meanwhile, the supporting rod moves in the first supporting seat and the second supporting seat, the two ends of the supporting rod are buffered by the first buffering block and the second buffering block at the same time, and the arc-shaped rubber plate is matched, so that the buffering effect of the supporting rod on the inner pipe is better.

The utility model discloses a server expansion hard disk array, and relates to the field of server hardware. The server extended hard disk array comprises an extended hard disk seat, a plurality of groups of hard disk mounting seats which are arranged in a step shape are arranged in the extended hard disk seat, a plurality of groups of cable clamping pieces which are arranged in a step shape are arranged on two sides of the extended hard disk seat, and a heat dissipation mechanism is arranged outside the extended hard disk seat. According to the server extended hard disk array, the hard disk mounting seats are distributed in the extended hard disk seat in a stepped manner, and are matched with the cable clamping pieces arranged on the side surfaces of the hard disk mounting seats, so that cables can be conveniently and orderly arranged and clamped and limited, the stability of the extended hard disks is good, and meanwhile, the heat dissipation mechanism and the heat dissipation grooves are matched, so that the heat dissipation efficiency is improved. Rapid heat dissipation can be provided for the extended hard disks in the multiple groups of extended hard disk seats, and the heat dissipation effect is good.

The utility model discloses a PTC heater heating core structure, and relates to the PTC heater technology field, the PTC heater heating core structure comprises a device main body, a first aluminum plate, a spacing groove, a connecting strip and a knob, one end of the device main body is provided with a positive electrode pin, the other end of the device main body is provided with a negative electrode pin, one side of the device main body is embedded with a connecting plate, and the connecting plate is provided with a second aluminum plate. According to the heating core structure, a traditional aluminum pipe is replaced by the first aluminum plate and the second aluminum plate, the limiting grooves are welded to one sides of the aluminum plates, and the ceramic heating pieces are embedded in the limiting grooves, so that the surfaces of the ceramic heating pieces are in full contact with the limiting grooves, and the heating effect is improved. And the ceramic heating piece can transmit heat to the limiting groove, so that the limiting groove can transmit the heat to the second aluminum plate, the second aluminum plate can transmit the heat to the cooling fin, the heat conduction efficiency of the ceramic heating piece is improved, and the temperature rising speed of the cooling fin is increased.

The invention relates to the technical field of casting bearing seat machining, in particular to a multi-angle angle grinder applied to casting bearing seat production and machining, which comprises a machining platform and an angle grinder body, an embedded electric control adjusting ring is mounted on the upper surface of the machining platform, and an upper mounting bracket is fixedly assembled at the upper end of the embedded electric control adjusting ring; and an electric control telescopic arm is mounted at the front end of the upper mounting bracket. According to the multi-angle angle grinder applied to casting bearing seat production and machining, the position and angle of the angle grinder body are changed in a multi-angle and large-range mode through the design of electric control rotation and electric control overturning, casting movement can be avoided, and the grinding precision and stability are improved; the upper mounting bracket can be overturned and stored in idle hours, and the angle and the height can be adjusted through overturning in busy hours, so that the storage and the transportation of the mounting bracket are greatly improved.

The utility model provides a glass edging and conveying mechanism, and belongs to the technical field of glass processing. Lower belt conveying lines used for conveying glass are symmetrically fixed to the two sides of the upper end face of the conveying frame, an edge grinding machining box is erected at one end of the upper end face of the conveying frame, upper belt conveying lines corresponding to the lower belt conveying lines are fixed to the two sides in the edge grinding machining box, and an anti-deviation mechanism is arranged at the other end of the upper end face of the conveying frame. The number of the anti-deviation mechanisms is two, and the anti-deviation mechanisms are symmetrically distributed outside the two sides of the lower belt conveying line. According to the glass edge grinding device, the movable positioning rollers are driven by the cylinders to push and abut against glass, so that the glass abuts against and is fixed to one sides of the different positioning rollers, the glass is aligned to the lower belt conveying line, glass deviation is avoided, and the glass edge grinding machining quality can be guaranteed.

The utility model belongs to the technical field of road and bridge construction, and particularly relates to a road and bridge construction supporting structure which comprises a pier column, a hoop combination mechanism is arranged on the upper side of the pier column, and I-shaped beams are symmetrically arranged on the upper side of the hoop combination mechanism. The hoop combination mechanism comprises a first hoop, a second hoop, a first semicircular ring, a second semicircular ring, a reinforcing assembly, a fixing block, a connecting rod, a limiting rod, a nut and an inserting hole. The I-shaped beam is erected on the upper side of the first hoop, the first hoop provides direct support for capping beam construction, the second hoop supports the first hoop on the lower side through a reinforcing rod of the reinforcing assembly, the supporting stability of the first hoop is improved, meanwhile, the bolt is tightened, the bolt pushes the pressing block to tightly press the outer side face of the pier column, and the friction force between the pressing block and the outer side face of the pier column is increased. Therefore, static friction force between the whole hoop combination mechanism and the pier column is increased, and compared with a single hoop, the device is higher in error-tolerant rate and better in strength and stability of supporting cover beam construction.

The invention relates to the technical field of welding, and discloses an arc-guided laser hybrid welding device which comprises a mounting frame, and a laser welding head, a laser range finder, a welding gun, a shielding gas blowing part, a welding seam tracker, an air knife and a dust hood which are detachably mounted on the mounting frame, the laser range finder is used for measuring the distance between the laser welding head and the surface of the to-be-welded workpiece; in the welding direction, the welding gun and the shielding gas blowing part are located on the front side and the rear side of the laser welding head respectively, the welding seam tracking sensor is located on the front side of the welding gun, the positions of the welding gun and the shielding gas blowing part are adjustable in the X-axis direction, the Y-axis direction and the Z-axis direction, and the positions of the welding seam tracking sensor are adjustable in the Y-axis direction and the Z-axis direction. In the Y-axis direction, the air knife and the dust collection cover are located on the two sides of the laser welding head correspondingly, the position of the air knife in the Z-axis direction and the angle of the air knife around the X-axis direction are adjustable, and the position of the dust collection cover in the Z-axis direction and the angle of the dust collection cover around the X-axis direction are adjustable. The integration level and the space utilization rate are high, and the use convenience is good.

The utility model relates to the technical field of cutting fluid production, and discloses a cutting fluid filtering device which comprises a filtering box, a supporting vertical frame used for supporting is arranged below the filtering box, a guide pipe used for conveying liquid is arranged at the top of the supporting vertical frame, a dismounting opening is formed in the left side wall face of the filtering box, and the left side wall face of the filtering box is provided with a water inlet. According to the cutting fluid filtering device, the mounting mode of the mounting and dismounting plate is changed, when cutting fluid is filtered, the cutting fluid penetrates through the mounting and dismounting filter screen to be filtered and separated, so that the cutting fluid can be filtered and separated, and the cutting fluid can be conveniently stored and taken out. Compared with the prior art that the dismounting plate is mounted in the filter box, the dismounting plate is changed into a dismountable mounting mode, the dismounting filter screen can be replaced only by simply pulling out the dismounting plate when cleaning is needed, and the dismounting mode is very convenient.

The utility model provides an abdominal fistulization opening protection device, and relates to the technical field of fistulization opening protection, the abdominal fistulization opening protection device comprises a baffle, the left side and the right side of the outside of the baffle are provided with supporting plates, the bottom ends of the outer side walls of the faces, away from each other, of the two supporting plates are symmetrically provided with T-shaped connecting blocks, and one ends of the two T-shaped connecting blocks are symmetrically connected with fixed clamping seats; the top ends of the inner side walls of the corresponding faces of the two supporting plates are provided with driving assemblies for driving the baffles to move back and forth. The fixing block drives the baffle to move back and forth in the sliding groove by screwing the rotary knob and driving the reciprocating threaded rod to rotate, so that the baffle is moved away from the position above a stoma, an ostomy bag can be replaced conveniently, the situation that the stoma and the ostomy bag are not convenient to nurse and replace quickly and effectively due to blocking of the protective cover is avoided, and the working efficiency is improved. Meanwhile, the operation step that the bandage needs to be unfastened and the protective cover needs to be taken down during replacement every time is avoided, and the usability of the device is improved.

The invention discloses road construction pavement adjustable marking equipment and a marking method thereof, and particularly relates to the technical field of road construction marking, the road construction pavement adjustable marking equipment comprises a vehicle body, and moving wheels are arranged at the bottom of the vehicle body; and a spraying mechanism. The width adjusting mechanism is arranged, the spraying head is installed on the width adjusting mechanism, the width adjusting mechanism is composed of the driving assembly, the movable column, the positioning column, the distance adjusting assembly, the third fixing rod and other structures, the position of the positioning column on the movable column is changed by controlling the distance adjusting assembly, namely the distance between the positioning column and the first fixing rod is adjusted, and the spraying head can be adjusted. The third fixing rod can drive a spraying head to rapidly swing back and forth through a mounting base, the spraying head is driven to slowly move and spray along with the vehicle body, then the lineation width can be effectively adjusted, the line width can be accurately adjusted according to different requirements, operation is flexible and convenient, adjustment is accurate and convenient, and practicability is high. And the use effect of the device is greatly improved.

The invention provides a heat recovery device of an air preheater, relates to the field of heat recovery of air preheaters, and aims to solve the problems of flue gas heat loss and insufficient heat recovery in the prior art. The device comprises an air preheater body, a flue gas filter, a fan, a preheating outer frame body, a heat preservation shell plate and the like. The air preheater body is provided with an air inlet pipe opening, an air outlet pipe opening and a heat exchange cavity, and a two-stage filter screen plate of the flue gas filter ensures that the flue gas is clean. The fan drives the spiral blades to make smoke flow spirally, and the circulation path is increased. A spiral liquid guide channel of the preheating outer frame body is communicated with a heat exchange pipeline, and heat exchange between water and smoke and heat exchange between the water and the smoke and the outer shell body are achieved through a booster pump. The heat preservation shell plate reduces heat loss. All the components work cooperatively, heat loss of the shell is effectively reduced, heat recovery efficiency is improved, and the heat exchanger is suitable for the fields of industrial boilers and the like and has remarkable energy-saving and environment-friendly significance.

The invention discloses an in-situ radiation detection system for frictional wear in an ultra-high temperature environment, which realizes lifting and load adjustment from the bottom of an ultra-high temperature heating furnace by redesigning a loading and lifting system, so that friction force collected by a loading rod is more accurate, meanwhile, the structure is simplified, and an angle adjusting mechanism and a Y-direction adjusting arc swing table are designed and added. The two-way adjustment of the lower sample table and the X-ray emission direction is realized, so that the angles of the lower sample table and the X-ray source can be adjusted, and the multi-angle online measurement of different areas of a grinding crack is realized through a ray detector in combination with the left and right translation module. The ray detector can be used for testing the crystal structure, lattice parameters, crystal defects and the influence of generated crystal phases on the lubrication mechanism of the material under the condition of ultrahigh-temperature friction, so that the design of a novel lubricating material in an ultrahigh-temperature environment is guided.

The utility model relates to the technical field of heat exchangers, and discloses a U-shaped heat exchange tube type multi-tube-pass anti-corrosion heat exchanger which comprises a shell, one end of the shell is fixedly connected with a first fixing ring, a tube box is installed on one side of the shell, one end of the tube box is fixedly connected with a second fixing ring, a tube plate is installed on one side of the first fixing ring, and the tube plate is installed on one side of the second fixing ring. And a plurality of bolts are mounted in the first fixing ring. According to the utility model, the nuts are separated from the bolts by rotating the nuts, the tube box is detached from the shell, the whole U-shaped tube bundle is detached by pulling the tube plate, the fixing rings are separated from the mounting holes by pulling the single tube pass, and the U-shaped tube bundle is in interference fit with the rubber rings through the U-shaped tube bundle and the fixing rings. The single tube pass can be quickly disassembled and assembled, replacement and maintenance are facilitated, the maintenance cost is effectively reduced, the cleaning effect is better, dirt and corrosives are effectively prevented from being accumulated, and the service life of the tube pass can be prolonged.