614results about How to "Easy to disassemble and replace" patented technology

The present application relates to a kind of rocket engine injector thin-wall milling self-positioning fixture and assembly method, it mainly includes upper positioning tire body component, conical surface expansion ring, tire unloading bottom plate, pressing cover plate, tire unloading lifting ring, pressing bolt, expansion screw, lower positioning bottom plate component, locking bolt, long fixed bolt, lower positioning bottom plate component is fixed in machine tool workbench by locking bolt long-term, always not disassembled.Product is positioned and clamped and supported by conical surface expansion ring, tire unloading bottom plate, pressing cover plate, pressing bolt, expansion screw before milling injector thin-wall and positioning tire body component, limit the radial and axial movement of injector thin-wall;Injector thin-wall is positioned and clamped and supported by conical surface expansion ring, tire unloading bottom plate, pressing cover plate, pressing bolt, expansion screw before milling injector thin-wall and positioning tire body component, limit the radial and axial movement of injector thin-wall;Injector thin-wall is positioned and clamped and supported by conical surface expansion ring, tire unloading bottom plate, pressing cover plate, pressing bolt, expansion sleeve before milling injector thin-wall and positioning tire body component, limit the radial and axial movement of injector thinn

The invention discloses a pet non-inductive health monitoring and stress early warning intelligent nest mat and a control method, and belongs to the technical field of pet intelligent articles and intelligent control. Pet physiological parameters are synchronously collected through the piezoelectric pressure sensor and the infrared temperature sensor, the stress level is quantitatively judged based on an AI algorithm model, graded early warning and matching type relieving intervention are triggered according to the stress level, and meanwhile a low-power-consumption control mechanism is carried to achieve long endurance. The intelligent nest mat is of a three-layer detachable waterproof structure and supports a double-sensor high-precision scheme and a single-sensor low-cost scheme at the same time, and all the modules work cooperatively to achieve a whole-process closed loop of monitoring, early warning and relieving. The system solves the problems of wearing resistance, low monitoring precision, untimely early warning, inactive relieving and the like of pets, is suitable for family health monitoring of common pets such as dogs, cats and the like, and has the advantages of non-inductive monitoring, accurate identification, intelligent intervention, low power consumption, flexible scheme and the like.

The application relates to the technical field of pipeline fixation, and particularly discloses a flange pipe fixing tool, which comprises a fixing sleeve and a hoop assembly sleeved in the fixing sleeve, a driving piece is arranged on the fixing sleeve and used for driving the hoop assembly to slide in the fixing sleeve, the diameter of the fixing sleeve gradually decreases from one end far away from the driving piece to one end close to the driving piece, the hoop assembly comprises a plurality of hoop blocks arranged in sections, gaps exist between adjacent hoop blocks, a clamping groove for accommodating a flange pipe is arranged at one end of each of the plurality of hoop blocks far away from the driving piece, and the clamping grooves arranged on the surfaces of the plurality of hoop blocks form a clamping area for clamping the flange pipe. The application has the effect of improving the positioning precision of the flange pipe.

This utility model relates to the field of plate rolling equipment technology, and discloses a four-roll plate rolling machine with adjustable roller spacing. It includes a machine base, a drive seat fixedly connected to the left side of the top of the machine base, and a bearing seat fixedly connected to the right side of the top of the machine base. A main roller is rotatably mounted between the drive seat and the bearing seat. A mounting seat is provided below the main roller, and a secondary roller is rotatably mounted inside the mounting seat. A first roller is located at the front end of the secondary roller, and a second roller is located at the rear end. This four-roll plate rolling machine with adjustable roller spacing allows the secondary roller to be moved by a second hydraulic cylinder to adjust the spacing to match the thickness of the plate. A first position sensor can accurately monitor the spacing of the secondary roller. The first hydraulic cylinder can push the support seat to adjust the first and second rollers. The second position sensor can accurately detect the positions of the first and second rollers, solving the problem of inconvenient and inaccurate spacing adjustment.

The utility model relates to a discharge structure belongs to kneading machine technical field, concretely is a kind of kneading machine continuous type anti -blocking discharge structure, including shell, the shell is respectively equipped with feed inlet and discharge port, the shell is fixedly connected with deslagging port, the shell is rotatably connected with multiple rotating columns;In the utility model, when needing to replace cleaning roller, rotating threaded cap, so that threaded cap is separated from fixed sleeve, then cleaning roller can be removed from fixed sleeve, it is cleaned and replaced, so that the device is convenient for the disassembly and replacement of cleaning roller, improve the practicability of the device, by the cooperation of protective shell, motor, driving roller, driven roller and belt, so that motor can drive conveyor belt operation simultaneously drive cleaning roller to clean conveyor belt, cannot additionally install driving mechanism to drive cleaning roller, to reduce the production cost of the device.

The utility model relates to welding machine technical field especially for a kind of welding machine of convenient dismounting replacement welding head, including machine body, the lower part of the right end of machine body is connected with connecting line, the end fixedly connected with handheld welding gun of connecting line away from machine body, the middle part fixedly connected with mounting block in the front end of handheld welding gun, the front end of mounting block is equipped with connecting groove, the inside of connecting groove is clamped and is connected with installation component, the front part of mounting block upper end and lower end are all equipped with embedding slot, the left end and right end of mounting block are all equipped with pop-out slot, the lower end of machine body four corners is fixedly installed with moving mechanism.The welding machine of the utility model is convenient to dismount replacement welding head, the welding head body is conveniently and quickly installed on handheld welding gun, also convenient subsequent quick dismounting replacement, whole process operation is simple, shortens the replacement time of welding head body, especially suitable for the welding operation scene of high work efficiency requirement, such as production line batch welding.

This utility model discloses an integrated oil-water separation device. The oil-water separation device includes a processing tank. A cover plate is movably mounted on the top of the processing tank via a rotating assembly, and an inlet is reserved on the top of the cover plate. An outlet is installed at the bottom of the processing tank. This utility model utilizes a motor to drive a rod, which in turn rotates a movable sleeve rod, causing a gear to rotate. A toothed block meshing with the gear is fixedly connected to the inner wall of a pre-reserved annular groove in the cover plate, causing the cover plate to rotate. Simultaneously, the arc-shaped plate rotates, allowing for vertical movement. This facilitates the lifting of the oil-water filter plate during cover plate lifting operations, making the oil-water filter plate exposed outside the processing tank easier to disassemble and replace. After the oil-water filter plate is exposed, rotating the threaded rod causes the annular groove to rotate, winding or unwinding a pull rope. The pull rope controls the movement of the interlocking block, enabling the disassembly and assembly of the oil-water filter plate, facilitating its replacement.

The utility model relates to steel structure component installation equipment technical field, and specifically is a kind of steel structure component installation device, including plate seat, the plate seat top surface is equipped with the sliding slot for adjusting, and the sliding slot inboard sliding installation is equipped with the sliding base for adjusting;In the process of using steel structure component installation equipment, the steel structure component of two groups needing to be docked can be placed on the surface of the rotating roller inside the U-shaped seat and the bracket respectively, then the multiple hydraulic rods A outside the U-shaped seat and the bracket are operated and the pressing plate is pushed to move, and the two pressing plates inside the U-shaped seat and the bracket can be close to each other and can be positioned and clamped to steel structure component, so that subsequent connection to steel structure component is facilitated, and the long strip pressing plate is used to limit steel structure component, which reduces the stress concentration point and reduces the deformation of steel structure component, so that steel structure component can be installed more stably.

This utility model relates to a PE foam car cargo box mat, comprising: a base plate, an insert groove inside the base plate, multiple sets of mounting holes on both sides of the bottom of the insert groove, six sets of positioning slots on both sides of the top of the base plate, a set of snap-fit ​​components on both sides of the inner wall of the positioning slots, a set of limiting slots on both sides of the inner wall of the insert groove between adjacent sets of positioning slots, multiple mat body parts inserted into the insert groove at positions corresponding to the limiting slots, pressure plate grooves on both sides of the top of the mat body and at the center of the mat body, multiple sets of positioning insertion holes at the bottom of the pressure plate grooves on both sides, and a pressure plate bracket inserted into the top of the base plate above the mat body. The beneficial effects of this utility model are: the design facilitates the disassembly and replacement of damaged areas of the mat, enhancing overall practicality.

The utility model relates to impact breaker composite hammer head technical field discloses an impact breaker composite hammer head structure, including the crushing end, the top of crushing end is provided with fixed end, the top inside fixed end is provided with mounting hole. This impact breaker composite hammer head structure is provided with mounting pad, reservation groove, first fixed hole, mounting bolt and protective sleeve, and the protective sleeve can protect the mounting hole, prevent the mounting hole from wearing and affecting use, need when the protective sleeve is fixed make the first fixed hole on mounting pad and the first fixed hole inside reservation groove alignment, after alignment, the mounting bolt is screwed into the inside first fixed hole and mounting pad is fixed, since mounting pad is installed at the front and rear ends of protective sleeve, so the protective sleeve can be fixed in position by fixing mounting pad, solve the problem that the mounting hole on the hammer head is easy to wear, inconvenient to protect the mounting hole, easy to affect the use of hammer head.

The utility model discloses a cutting device based on a pillowcase, which relates to the technical field of pillowcase processing and comprises a workbench, a smoothing and cutting mechanism is arranged at the top of the workbench and used for smoothing wrinkles of original cloth of the pillowcase, and the smoothing and cutting mechanism comprises a lifting unit, a cutting unit and a cutting unit, the smoothing unit is arranged below the lifting unit and comprises connecting lugs fixedly mounted on the left side and the right side of the fixing sleeve, rotating rods are rotationally mounted in the connecting lugs, and smoothing columns are fixedly mounted at the bottom ends of the rotating rods; the lifting unit and the smoothing unit are arranged, a first air cylinder runs to drive a fixing sleeve to move downwards through a lifting column, when the fixing sleeve moves downwards, a smoothing column makes contact with the surface of the cloth, two rotating rods rotate in the arc-shaped opposite directions, wrinkles of the cloth are smoothed through the smoothing column, and therefore an operator does not need to manually smooth the cloth; and the efficiency is improved, the labor cost is reduced, and the batch production requirement is met.

The utility model discloses a kind of high-precision plug-in durability test equipment, belong to quick coupling detection technical field, including test box, the inside fixed connection of test box has workstation, the top fixed connection of workstation has the bottom plate of upper and lower parallel distribution, and fixedly connected with precision guide rod between bottom plate;The utility model, the setting of precision guide rod ensures that the sliding direction of push plate is accurate, prevents push plate deviation and causes plug alignment deviation;Female plug and female plug base thread connection, male plug and male head base bolt fixing mode, both facilitate staff to dismantle replacement female plug and male plug at any time, adapt to the test demand of different model plug, improve equipment versatility;Driving unit drives push plate to complete plug-in action automatically, replace manual operation, not only improve test efficiency, also avoid the error of manual operation, ensure the consistency of test result.

This utility model discloses a wire guide hook bracket, relating to the field of wire drawing machine technology. During high-speed movement, the magnet in the wire guide hook bracket may detach from the slot, leading to deviations in magnetic force counting data. This utility model includes a bracket body, a fixing part, and a magnet component. The bracket body has a placement groove on its surface, and the fixing part is located inside the bracket body, having a sliding block disposed on the inner side of the bracket body. The bracket body has a square slot. This utility model uses the elastic force of a spring to push a cover plate, causing the fixing block to insert into the fixing slot of the magnet component, thus reinforcing the magnet component and reducing the possibility of it detaching from the bracket body during movement. Furthermore, the fixing of the magnet component can be quickly released by sliding the sliding block, facilitating disassembly and replacement by operators.

The application discloses a kind of independent support combination hydraulic support for large mining height composite roof mining filling, including support body, and the leakage prevention assembly of being additionally installed in the one side of support body, support assembly includes support base, four support adjusting electric cylinders one are movably installed in the top of support base, and mining support assembly is movably installed in the top of four support adjusting electric cylinders one, mounting seat is fixedly installed in the top of support base, and two support rods one are movably installed in the inside of mounting seat;By setting inner and outer double-layer shielding leakage prevention assembly, shielding band is conveniently disassembled and replaced by the quick assembly structure of clamping type, is matched with adhering structure, bottom counterweight compaction structure and arc convex projection blocking structure, form omnibearing sealing protection system, can effectively block the side, bottom gap of filling material in mining filling operation process, completely solve the problem of large mining height working face filling material leakage, leakage, greatly improve filling density and filling operation quality.

The utility model discloses a bar surface smoothness polishing mould frame, which relates to the technical field of bar processing, and comprises a fixed base, the rear side of the upper end of the fixed base is fixedly connected with an inner side fixed frame, the upper ends of the two sides of the inner side fixed frame are fixedly connected with turnover frames, a turnover driving shaft is rotatably arranged between the turnover frames on the two sides, and the turnover driving shaft is fixedly connected with the inner side fixed frame. An indexing driver is fixedly installed on the outer side of the overturning frame on one side, an output shaft of the indexing driver penetrates through the overturning frames and then is fixedly connected with an overturning driving shaft, and bars are continuously fed into the bar clamping notches in the upper side through conveying equipment and then overturned. After being ground, the workpiece directly falls into the roll-out roller set on the lower side to be conveyed to corresponding conveying equipment to be conveyed out, continuous polishing machining can be carried out, the structure is simple, design is reasonable, operation is convenient and fast, the problem that lathe resources are occupied for a long time in a traditional polishing method can be effectively solved, normal use of other equipment is not affected, and the production efficiency is greatly improved.

The utility model discloses a kind of feeding devices for mining tray production line, including bottom plate, controller is set on its upper end left side;Speed reducer motor, it is set in the lower end left side of bottom plate, and the output end of speed reducer motor is connected with movable structure, the movable structure includes link wheel, mounting wheel and mounting rod, and link wheel is installed in the output end of speed reducer motor;Moving plate, it is installed in the outside of mounting rod, and the inside right side of moving plate is provided with pneumatic telescopic rod, the right side of pneumatic telescopic rod is connected with mounting plate, and the inside of mounting plate is connected with connecting plate, the inside of connecting plate is provided with clamping structure, and clamping structure includes electric telescopic rod, fixed block and link plate. The feeding device for mining tray production line is provided with movable structure, can move raw material steel plate, so as to raw material steel plate is fed, and provided with clamping structure, can play the role of taking material to raw material steel plate.

A replaceable, tightly fitting tapered motor shaft includes a first sealing shaft, a positioning shaft, a support shaft, a rotor shaft, a second sealing shaft, and a tapered shaft. The positioning shaft is fixedly connected to one end of the first sealing shaft, and the support shaft is fixedly connected to the other end of the positioning shaft. The other end of the support shaft is detachably connected to one end of the rotor shaft. A toothed bushing is fitted onto the rotor shaft, and the other end of the rotor shaft is also detachably connected to the second sealing shaft. The other end of the second sealing shaft is fixedly connected to one end of the tapered shaft. This invention allows for easy disassembly and replacement of the vulnerable rotor shaft when it is damaged, thanks to springs and a special-shaped groove. Furthermore, the toothed bushing allows for quick installation of the motor rotor. Thus, after wear or damage, only the vulnerable parts need to be repaired and replaced, eliminating the need for complete replacement and reducing costs while improving work efficiency.

This utility model discloses a hand-cranked activated carbon cleaning device, including a cleaning hood mounted between fixed supports via a horizontal shaft. Both ends of the cleaning hood are sealed with support panels. A mesh is evenly distributed on the outer cover between the support panels, and a feed inlet is also provided on the outer cover. Both ends of the horizontal shaft extend out from the support panels, with the extended portions resting on the fixed supports. One end is connected to a hand crank handle. The horizontal shaft is also fixedly connected to the support panels. A water pipe support is provided beside the fixed supports, with the water pipe horizontally mounted on the support and positioned above the cleaning hood. Multiple nozzles are arranged on the water pipe. This utility model device has a simple structure and low cost, suitable for activated carbon cleaning needs in environments without electricity or in small-scale scenarios, as well as for cleaning small-scale (1-20 kg) activated carbon in laboratories.

The utility model discloses a kind of split type exploitation diamond composite sheet, belong to diamond composite sheet technical field, including diamond pedestal and diamond surface layer, the upper surface edge position of diamond surface layer is provided with wear-resistant arc-shaped back edge, diamond surface layer's upper surface middle position integrally has several cutting knives, several cutting knives are annular array and are arranged at the surface position of diamond surface layer, the two sides of cutting knife all have cutting bevel;By setting diamond pedestal and gold face layer cooperation assembly plug post and assembly bolt use, diamond pedestal and diamond surface layer split type design, after being inserted into assembly slot by assembly plug post, and using assembly bolt to assemble, diamond composite sheet of split type design can only dismount and replace diamond surface layer when appearing cutter body abrasion in use process, while retaining diamond base layer, it is convenient to dismount and replace, and can avoid the tediousness of dismounting diamond pedestal and affect operation efficiency.

The utility model discloses a label with an anti-scratch function, which relates to the technical field of labels and comprises label card paper, wear-resistant layers are connected to the front side and the rear side of the label card paper in a magnetic attraction manner, fixing plates are integrally arranged on the left side and the right side of the label card paper, and extension plates are integrally arranged on the left side and the right side of each wear-resistant layer. The extension plates are adhered to the surface of the fixing plate through hook-and-loop fasteners, first flexible magnetic strips are integrally connected to the front side and the rear side of the label paperboard, the abrasion-resistant layers comprise PET layers and UV oil mist layers, the UV oil mist layers are surface layers, the PET layers are inner layers, and the PET layers are tightly attached to the surface of the label paperboard. The two wear-resistant layers are matched with the label card paper to form a double-layer sandwich design, the label card paper in the middle can be effectively protected from being scratched, the wear-resistant layers adopt a double fixing mode of magnetic attraction and hook-and-loop fastener bonding, the fixing effect is improved, and meanwhile follow-up disassembly, assembly and replacement are facilitated.

The utility model discloses pruning equipment for thin-skinned pecan planting, and relates to the technical field of agricultural mechanical equipment, the pruning equipment comprises an electric telescopic rod, pruning shears and an electric push rod, one end of the electric telescopic rod is provided with a grabbing rod, the grabbing rod is provided with a switch button, and one end of the electric telescopic rod far away from the grabbing rod is provided with a support frame; the pruning shears comprise a first handle, a second handle, a fodder chopper and a blade, the first handle is rotationally connected with one end of the second handle, the fodder chopper is connected to one end of the first handle, the end, away from the fodder chopper, of the first handle is connected with the supporting frame, and the second handle is connected with the blade through a clamping mechanism. The two ends of the electric push rod are connected with the supporting frame and one end of the second handle through a first connecting assembly and a second connecting assembly respectively. Through the arrangement of the clamping mechanism, the blade can be easily detached and replaced, the equipment maintenance time is effectively shortened, and the overall working efficiency is practically improved.

The utility model discloses a high-efficiency bolt thread rolling device which comprises a U-shaped machining table, a vertical plate is arranged on one side of the top end of the U-shaped machining table, a three-jaw chuck is arranged on one side of the vertical plate, I-shaped sliding rails are symmetrically arranged at the top end of the U-shaped machining table, first sliding blocks matched with the I-shaped sliding rails are arranged at the top ends of the two sets of I-shaped sliding rails, and a second sliding block matched with the first sliding blocks is arranged at the top end of the U-shaped machining table. U-shaped frames are arranged on the sides, close to each other, of the two first sliding blocks, and thread rolling wheels are arranged in the U-shaped frames. The device has the beneficial effects that by arranging the mounting column, the height adjusting assembly and the arc-shaped burr scraping plate, after bolt thread rolling machining is completed, deburring treatment can be rapidly conducted on the outer wall of a bolt, the bolt does not need to be detached from thread rolling equipment by personnel to be independently cleaned, time and labor are saved, and the overall machining efficiency of the bolt is improved; and by arranging the connecting assembly, the arc-shaped burr scraping plate can be conveniently disassembled, assembled and replaced, the disassembling and assembling time of the arc-shaped burr scraping plate is shortened, and the bolt machining efficiency is further improved.

The utility model relates to the technical field of machining, in particular to a vacuum suction nozzle assembly of a grabbing mechanical arm of a plate feeding machine, which comprises a grabbing mechanical arm for the plate feeding machine, a fixed seat is mounted at the fixed end of the grabbing mechanical arm, and a vacuum negative pressure pump is mounted at the movable end of the grabbing mechanical arm. Through the arrangement of the grabbing mechanical arm, the vacuum suction nozzle assembly can accurately reach the target position to conduct grabbing operation; the vacuum negative pressure pump is installed at the movable end of the grabbing mechanical arm and can generate vacuum negative pressure and provide power for sucking objects, the detachable net cover is installed at the air outlet end, sundries can be prevented from entering the pump, and meanwhile cleaning and maintaining are convenient. The top of the negative-pressure suction nozzle is provided with the internal thread connector which is matched with the external thread pipe in size and is in threaded connection with the external thread pipe, the negative-pressure suction nozzle and the vacuum negative-pressure pump are tightly connected through the connection mode and are convenient to disassemble and replace, the negative-pressure suction nozzle is in a sucker shape and can be better attached to the surface of a sucked object, and the suction stability and reliability are improved.

The utility model discloses a kind of thyroid breast drainage equipment, comprising: threaded insertion in the upper end of fixed storage component for the drainage connection component of body fluid circulation, the upper end of the drainage connection component is fixedly connected with the drainage fixed component for drainage.The beneficial effects of the utility model are as follows: by being provided with fixed storage component, drainage bag is conveniently replaced, and at the same time, the device can be firmly fixed on the patient, by being provided with drainage connection component, let drainage connecting pipe be firmly fixed in the upper end of fixed storage component by threaded sleeve joint structure, it is convenient to disassemble and replace, by being provided with drainage fixed component, let drainage cover block cover drainage port, greatly reduce the liquid exudation of wound, increase the protective property of device use.

The utility model relates to the technical field of drawing frames, and discloses an anti-blocking device for a drawing frame, the anti-blocking device comprises a U-shaped frame arranged at an inlet of the drawing frame, two rotating shafts are rotatably mounted in the U-shaped frame, the two rotating shafts are both fixedly sleeved with hair collecting roller sleeves, felt is detachably mounted and fixed on the two hair collecting roller sleeves, and the hair collecting roller sleeves are fixedly sleeved with the felt. A driving assembly is arranged on the front side of the U-shaped frame and used for controlling the two rotating shafts to rotate relatively, and two dust suction hoods with the bottoms being open are fixedly installed in the U-shaped frame. Compared with the prior art, the device has the following advantages and effects that the adhesion effect of the felt is matched with the negative pressure dust collection effect, a dual protection mechanism is formed, short fibers, fluff and other impurities on the surfaces of fiber strips can be comprehensively and efficiently cleaned away, the blocking phenomenon caused by accumulation of the impurities at an inlet of the drawing frame is avoided, the impurities cannot enter the drawing frame easily, and the service life of the drawing frame is prolonged. Therefore, smoothness of a fiber rod conveying channel at the inlet of the drawing frame is guaranteed, and stable and efficient operation of the drawing frame is guaranteed.

The utility model is suitable for the technical field of clamp, provides a kind of automobile side wall assembly clamp positioning pin subassembly, including positioning pin body;Pin head is movably connected in the bottom end of positioning pin body, and through-hole is opened in the pin head;Fixed groove is opened in the inside upper end of positioning pin body, and the inside of the positioning pin body in the top of fixed groove is equipped with thread groove, and the inside of the positioning pin body in the top of thread groove is equipped with through slot;Connecting rod is set in the inside of through slot, and the bottom end of connecting rod is fixedly connected with the thread rod extending to the inside of thread groove, and the bottom end of thread rod is fixedly connected with the fixed block extending to the inside of fixed groove.The automobile side wall assembly clamp positioning pin subassembly provided by the scheme utilizes four abutting structures, can be centrally clamped and positioned to positioning pin body inserted into the inside of positioning hole, ensure that positioning pin body and positioning hole are at the same axial center, reduce positioning error, and can improve the clamping property of positioning pin body and the inner wall of positioning hole.

The invention discloses a high-waterproof drainage tube body surface wound connection special waterproof paste which comprises a drainage tube and further comprises a drainage tube clamp, the whole drainage tube clamp is made of a medical silica gel material, the whole drainage tube clamp has certain deformability, a first opening is formed in the front face of the drainage tube clamp, and a second opening is formed in the back face of the drainage tube clamp. The drainage tube is sleeved and mounted in the drainage tube hoop, and the width of the first opening is smaller than the outer diameter of the drainage tube; one end of the sealing winding adhesive tape is fixedly connected and mounted on the outer wall of the drainage tube hoop, and the sealing winding adhesive tape is used for winding the drainage tube hoop and the drainage tube; the invention discloses a liquid-absorbing dressing. An opening of the drainage tube clamp is kept in a closed state through the sealing winding adhesive tape, then the sealing winding adhesive tape is spirally wound upwards, a direct gap between the upper end of the drainage tube clamp and the drainage tube is wound and sealed, and the waterproof adhesive tape adheres to the periphery of a body surface wound of a patient in a sealed mode, so that the body surface wound of the drainage tube is kept in a sealed state. And the patient can take a shower or a basin bath normally.

The application provides a liquid nitrogen wetting contact angle measuring device for a super-low-temperature solid surface, comprising a super-low-temperature solid surface cooling assembly, a nitrogen atmosphere protection assembly, a liquid nitrogen titration assembly and a wetting contact angle observation assembly, wherein the super-low-temperature solid surface cooling assembly can make the sample quickly enter and maintain the super-low-temperature state during the test through liquid nitrogen circulation and a silver cooling plate. The nitrogen atmosphere protection assembly discards the commonly used vacuum scheme in engineering and adopts dry nitrogen protection to avoid the rapid gasification of liquid nitrogen under vacuum. The liquid nitrogen titration device realizes the dropping of liquid nitrogen at different heights, supports the related research on wetting contact angle measurement and droplet impact dynamics. The wetting contact angle observation assembly guarantees the observation of the droplet shape under the super-low-temperature environment through a light source plate, a blowing device and the like. The application fills the gap in the research on the wetting and spreading behavior of super-low-temperature fluid on a cooled solid surface and has important value for super-low-temperature fluid lubrication and super-low-temperature fluid transportation.

This utility model discloses a Teflon-coated anti-corrosion pipe for treating acid and alkali waste gas, belonging to the technical field of waste gas treatment pipes. It includes an anti-corrosion branch pipe, an anti-corrosion merging pipe, a filter assembly installed between the branch pipe and the merging pipe for filtering acid and alkali waste gas, and an anti-loosening mechanism used in conjunction with the filter assembly. The filter assembly includes a filter cartridge connected to the branch outlet of the branch pipe and a filter protection cartridge installed outside the filter cartridge. The filter cartridge filters the acid and alkali waste gas, and the filtered waste gas is then discharged from the merging inlet of the merging pipe through the filter protection cartridge. This utility model effectively filters waste gas, facilitates maintenance, reduces clogging of the filter structure, ensures effective waste gas purification, and allows the waste gas treatment equipment to operate normally without shutting down during maintenance, thus guaranteeing the efficiency of acid and alkali waste gas treatment.