39results about How to "Add fixed function" patented technology

A vibration-isolating fixing mechanism for a fan frame. The mechanism, configured to couple the fan frame to first fastening portions of a casing, includes: coupling portions protrudingly disposed on two installation surfaces of the fan frame; positioning brackets each having second fastening portions and through-holes; resilient elements each circumferentially disposed between each coupling portion and each through-hole and extending to two through-hole-corresponding sides of each positioning bracket; and coupling elements coupled to the coupling portions respectively, positioned on one side of each resilient element facing away from the fan frame, and configured to position the positioning brackets and the fan frame relative to one another. Axial vibration isolation is achieved by insertion of the coupling portions into the through-holes circumferentially disposed with the resilient elements and by resilient contact between each resilient element and each coupling element.

A vibration-isolating fixing mechanism for a fan frame. The mechanism, configured to couple the fan frame to first fastening portions of a casing, includes: coupling portions protrudingly disposed on two installation surfaces of the fan frame; positioning brackets each having second fastening portions and through-holes; resilient elements each circumferentially disposed between each coupling portion and each through-hole and extending to two through-hole-corresponding sides of each positioning bracket; and coupling elements coupled to the coupling portions respectively, positioned on one side of each resilient element facing away from the fan frame, and configured to position the positioning brackets and the fan frame relative to one another. Axial vibration isolation is achieved by insertion of the coupling portions into the through-holes circumferentially disposed with the resilient elements and by resilient contact between each resilient element and each coupling element.

A fluid dispenser head comprising a body (1) forming a dispensing duct (14) having an outlet (143) defining an outlet axis X, and a shutter (2) fitted to the body (1) for the purpose of selectively closing off the dispensing duct (14) at its outlet (143), the shutter forming a dispensing orifice (22) that is closed in the absence of fluid under pressure in the dispensing duct, said shutter being provided with sealing means (24) and with fixing means (25a) co-operating respectively with complementary seal-receiving means (15) and with complementary holding means formed by the body (1), the fixing means comprising at least one fixing profile (253) facing radially outwards relative to the outlet axis X, and the holding means comprising at least one holding profile (193) facing radially inwards towards the outlet axis X.

The invention provides an integral type rolling machine axial adjusting device, comprising a rolling machine upright (1), a roller bearing block (3), multiple cup head bolts (4) which are inserted into a through hole (5) of the rolling machine upright (1), an integral type axial pressure plate (6) used for fixing and adjusting the roller bearing block (3) and multiple flat hole slots (7) which are formed on the integral type axial pressure plate (6), wherein the integral type axial pressure plate (6) is sheathed on the multiple cup head bolts (4) which penetrate through the through hole (5) of the rolling machine upright by virtue of multiple flat hole slots (7), the multiple cup head bolts (4) are respectively added with half cylindrical pads (8), and the half cylindrical pads are respectively fastened and located by virtue of nuts (9).

A combing element for a combing machine for combing textile fibres comprises a basic body (2) with a centre longitudinal axis (3), a circumferential surface (4) and two end surfaces (5), at least one catch (10) which is arranged on the circumferential surface (4) of the basic body (2), a profiled strip (9) for connecting the at least one catch (10) to the basic body (2), and a torsion rod (16) for locking and unlocking the profiled strip (9) on the basic body (2), wherein the profiled strip (9) is arranged in a receiving groove (14) of the basic body (2) and comprises a pivoting lever (19), by means of which the profiled strip (9) can be pivoted about a pivot axis (20) which is arranged parallel to the centre longitudinal axis (3), the torsion rod (16) is arranged in the receiving groove (14) such that it can be rotated about a rotational axis (17); which is arranged parallel to the centre longitudinal axis (3), the torsion rod (16) is accessible from outside the combing region, in particular from at least one of the end surfaces (5), the torsion rod (16) has a non-round cross section which is oriented perpendicularly with respect to the rotational axis (17), the torsion rod (16) is arranged on the pivoting lever (19) in such a way that, as a result of a rotation about the rotational axis (17), the torsion rod (16) can be displaced between a locked position for locking the profiled strip (9) on the basic body (2) and an unlocked position for unlocking the profiled strip (9) on the basic body (2).

The invention discloses a multifunctional high-efficiency die-cutting machine which comprises a machine table. A die-cutting frame is fixedly arranged in the middle of the top end of the machine table, sliding grooves are fixedly formed in the two ends of the inner side of the die-cutting frame, a cutter base is slidably connected to the inner sides of the sliding grooves, and a pneumatic cylinderis fixedly arranged in the middle of the top end of the die-cutting frame. A cutter is fixedly arranged at the top end of the cutter base, telescopic frames are fixedly connected to the two sides ofthe cutter base, lower pressing rods are fixedly arranged at the bottom ends of the telescopic frames, and a cutter groove is formed in the position, corresponding to the middle of the cutter, of themiddle of the top end of the machine table in a penetrating manner. A pressing roller frame is fixedly arranged on one side of the top end of the machine table, a lower pressing roller is rotatably connected to the position, corresponding to the pressing roller frame, of the top end of the machine table through bearings, and an upper pressing roller is rotatably connected to the middle of the pressing roller frame through bearings. A finished product conveying belt is fixedly arranged on the other side of the top end of the machine table, and a finished product discharging port is fixedly formed in the other side of the top of the machine table. The multifunctional high-efficiency die-cutting machine is simple and reasonable in structure and novel in design, and has higher multifunctionaluse efficiency in use of die-cutting machines.

The invention provides a preparation method of a carbon nanometer fiber / beta-cyclodextrin based nanometer fiber film with a sandwich structure. The method is characterized in that the nanometer fiberfilm employs beta-cyclodextrin as a substrate, citric acid as a cross-linking agent, beta-cyclodextrin as a reinforcing phase, and a polymer for assisting film forming, and is the nanometer fiber filmwith the electrospun carbon nanofiber enhanced polymer / beta-cyclodextrin-polyacrylic acid / polymer three-layer sandwich structure. The nanometer fiber film with the sandwich structure has good adsorption and fixation effects for heavy metal ions (such as Cd(II), Cu(II), Fe(III) metal cations) in aqueous solution. The preparation process has the advantages of simple and easy operation, easily available raw materials, environmental friendliness, and low cost, and the method can be applied to water treatment and biomedical fields which need high efficient separation and fixation of heavy metal ions.

The invention relates to an end-prefabricated tightened fiber core butterfly guiding-in optical cable and an implementation method of the end-prefabricated tightened fiber core butterfly guiding-in optical cable, and belongs to the technical field of optical cable connection. The end-prefabricated tightened fiber core butterfly guiding-in optical cable comprises a ceramic inserting core positioned at the front end of an optical cable quickening device, connector parts and components and a tightened fiber core butterfly guiding-in optical cable connected with the ceramic inserting core, wherein the tightened fiber core butterfly guiding-in optical cable comprises an outer sheath, non-metallic reinforcement members symmetrically arranged inside the outer sheath, and a coloring optical cable arranged at the center of the outer sheath; and a protective sleeve is arranged outside the coloring optical cable through sleeve connection. The end-prefabricated tightened fiber core butterfly guiding-in optical cable disclosed by the invention is reasonable in design, simple in structure and good in tensile effect.

The invention relates to a zipper puller. The zipper puller comprises a zipper underlay (1), a zipper cover (2), a hook body (3) and a hand pulling handle (4), wherein the zipper underlay (1) is fixedly connected with the zipper cover (2); the hook body (3) is fixed on the external wall of the zipper cover (2); the hand pulling handle (4) is sleeved on the hook body (3) through a penetrating hole; two ends of the zipper cover (2) are respectively provided with movable opening covers (7); a sliding slot (5) is formed in the connection part between the zipper cover (2) and the opening cover; and a sliding block (6) capable of horizontally sliding along the zipper cover in the sliding slot (5) is arranged at the connection part between the zipper cover (2) and the opening cover; and the opening cover (7) is blocked and fixed through the sliding block (6) when being closed. The zipper puller provided by the invention can recover back and forth movement fast, so that an adjusting function is achieved, goods are convenient to open or close and the implementation of a locking function can be better realized, and then, the life of people is more favored, and the zipper puller can be widely used in various fields.

The invention discloses a convenient and fast mounting base for a bathroom. The convenient and fast mounting base comprises a base body, an adsorption device arranged in the base body, and a linking handle arranged on the top of the base body. The adsorption device comprises at least one suction cup. Each suction cup comprises a suction cup body, an adhesion cavity formed in the suction cup body, a suction cup top cover arranged on the top of the adhesion cavity, and an adsorption groove which is concave inwards and is formed in the bottom of the suction cup body. The adhesion cavities are filled with adhesives. The mounting base is simple in structure, convenient to transport and capable of fast and stably fixing a sanitary product in the bathroom.

The invention discloses a packaging paper box convenient to carry, and relates to the technical field of packaging paper boxes. The packaging paper box convenient to carry comprises a paper box body, a paper cover plate, a box body and a base, wherein the paper box body comprises the paper cover plate, the bottom of the paper cover plate is movably connected with the box body, and the base is fixedly installed at the bottom of the box body. Through mutual cooperation of a hydraulic column and a positioning block, the hydraulic column drives the positioning block to move downwards, then the hydraulic column is matched with the positioning block to drive a fixing block to move, then moving wheels move to the bottom of the base, then the positioning block is fixedly connected through a fixing ring, the hydraulic column drives a pressing block to move, the function that the base is fixedly connected with moving wheels is achieved, the problems that due to the fact that objects loaded in the packaging paper box are too heavy, the objects are inconvenient to transport, the transportation cost is increased, and the cost is increased are solved, the convenience of the packaging paper box is improved, the packaging paper box is convenient to move, and the transportation cost is reduced.

The invention provides a harmonic knife with a fixing function. The harmonic knife comprises a chuck part, a chuck trigger and a fixing trigger. When a chuck operating part of the chuck trigger is pressed, the chuck part performs clamping actuation, and a tenon of the chuck trigger positioned at a first initial position moves towards a first preset position along a first path. When the fixed operation piece of the fixed trigger is pressed, the push rod of the fixed trigger positioned at the second initial position can move towards the second preset position along the second path, and if the clamping tenon is positioned at the first initial position, the push rod can be interfered to move towards the second preset position. The push rod is provided with a clamping groove, and when the push rod is located at the second preset position, the clamping groove is formed in the first path, and the opening of the clamping groove faces the first preset position, so that when the chuck operating piece is not pressed, the clamping tenon enters the clamping groove from the opening.

A visual drainage tube effectively solves the problem of timely cleaning drainage liquid and comprises a drainage bottle, a cam is rotatably connected to the interior of the drainage bottle, a floating ball is fixedly connected to the lower end of the cam, a T-shaped rod is slidably connected to the interior of the drainage bottle, a first pressing rod is fixedly connected to the right end of the T-shaped rod, and a second pressing rod is fixedly connected to the right end of the T-shaped rod. The upper end of the T-shaped rod is fixedly connected with a tension spring, the other end of the tension spring is fixedly connected with the drainage bottle, a toothed belt wheel is rotationally connected into the drainage bottle and meshed with the T-shaped rod, a rotating wheel is rotationally connected into the drainage bottle, and a transmission belt is arranged between the rotating wheel and the toothed belt wheel in a sleeved mode. The device is novel in structure, ingenious in conception and easy and convenient to operate, the function of preventing blockage is added, the function of observing the internal drainage state is added, the function of preventing backflow of the cleaning pipe is added, and the function of being fixed to the body of a patient is added.

The invention discloses a new energy automobile charging protection device and belongs to the technical field. The new energy automobile charging protection device comprises a box body, wherein the inner wall of the bottom of the box body is connected with a battery fixing plate, the top of the battery fixing plate is provided with four battery fixing grooves, the transverse inner side wall of thebox body is sequentially connected with a first reset assembly, a first fixed pulley, a first fixing plate, a second fixed pulley and a second fixing plate in the horizontal direction, the second fixing plate is connected to the top of the battery fixing plate, the longitudinal outer side wall of the side, close to the first reset assembly, of the box body is opened, the transverse inner side wall of the box body is provided with a sliding groove, and the first fixing plate is slidingly connected with the sliding groove. The new energy automobile charging protection device is simple in structure and convenient to operate and achieves coaxial stability of a charging connector and a charging socket, the problem of poor contact of a charging head is effectively avoided, the fall-preventing performance of the charging head is improved, the charging stability of a new energy automobile is achieved, and thus the electricity stealing prevention performance of the new energy automobile is improved.

The invention provides a phosphorous-rich region phosphorous loss prevention and control plant community disposition method. The phosphorous-rich region phosphorous loss prevention and control plant community disposition method comprises the following steps of, firstly, determining the area of a mountainous region severe in water and soil loss and rich in phosphorous; secondly, determining plantsplanted in the area of the mountainous region severe in water and soil loss and rich in phosphorous in the first step; thirdly, according to the dynamic features of seasonal change of nutrients of theplants in the second step, selecting appropriate plant species to be deposed, and according to the difference of plant functional groups in different habitats, performing community division, selecting plants applicable to being gathered together to provide a scientific basis and the like for vegetation recovery. The phosphorous-rich region phosphorous loss prevention and control plant community disposition method is mainly applied to mountain water and soil loss and phosphorous-rich region phosphorous output to structure low-cost and high-efficiency effective plant communities, thereby beingapplicable to basin water and soil loss control as well as phosphorous output reduction and control of mountain non-point source pollution.

The invention relates to an end-prefabricated tightened fiber core butterfly guiding-in optical cable and an implementation method of the end-prefabricated tightened fiber core butterfly guiding-in optical cable, and belongs to the technical field of optical cable connection. The end-prefabricated tightened fiber core butterfly guiding-in optical cable comprises a ceramic inserting core positioned at the front end of an optical cable quickening device, connector parts and components and a tightened fiber core butterfly guiding-in optical cable connected with the ceramic inserting core, wherein the tightened fiber core butterfly guiding-in optical cable comprises an outer sheath, non-metallic reinforcement members symmetrically arranged inside the outer sheath, and a coloring optical cable arranged at the center of the outer sheath; and a protective sleeve is arranged outside the coloring optical cable through sleeve connection. The end-prefabricated tightened fiber core butterfly guiding-in optical cable disclosed by the invention is reasonable in design, simple in structure and good in tensile effect.

The invention discloses a full-degree-of-freedom air pressure floating type deburring device, and relates to the technical field of machining device. The full-degree-of-freedom air pressure floating type deburring device comprises a deburring device body, a main shaft, a middle shaft layer and a bottom shaft, the top of the deburring device body is movably connected with a connecting shaft, the bottom shaft is arranged at the top of the connecting shaft, and the middle shaft layer is fixedly installed at the top of the bottom shaft; a main shaft is fixedly installed on the inner side of the middle shaft layer, and a sealing shaft is fixedly installed on the top of the middle shaft layer. According to the full-degree-of-freedom air pressure floating type deburring device, through mutual cooperation of an air inlet pipe and an air inlet hole, air is injected into the air inlet pipe and enters an air pressure chamber through the air inlet hole, so that the function of increasing the internal air pressure is achieved, a mounting block is ejected out through the internal air pressure by a movable piston, then the function of adjusting the floating force is achieved through the amount of the injected air, the problem that the internal buoyancy of the device cannot be controlled, so that the sensitivity of spindle movement is reduced is solved, the sensitivity of the spindle is improved, and the deburring effect is better.

The invention provides an aneroid barometer. The aneroid barometer comprises a barometer body, pins, a screw cap and a threaded connection column; the top surface of the barometer body is in threadedconnection with the screw cap; the two pins which have ring-shaped structures are separately arranged on the front and rear parts of the outer wall of the barometer body; the threaded connection column with a certain length is arranged on the bottom surface of the barometer body; the outer side of the threaded connection column is further matched with a metal outer screw sleeve in a threaded connection manner; four ball head levers are uniformly distributed on the outer wall of the metal outer screw sleeve; four scale marks are uniformly distributed on the outer wall of the metal outer screw sleeve; and a drilling section which is integrated with the metal outer screw sleeve is arranged on the bottom surface of the metal outer screw sleeve. The problem that a certain testing point in a necessarily measured geological environment is not level is solved. The screw cap is mounted on the head and positioned on the top of the barometer in a threaded mode, dust prevention treatment is carried out by the screw cap, and the circumstance that dust or sand exists when the ground is drilled to damage the head of the barometer is avoided.

The invention relates to a building indoor trim wall automatic scraping-sweeping treatment machine. The machine comprises supporting devices, a walking device, a rotating device, a telescopic device, an angle adjusting device and a scraping-sweeping device. The supporting devices are located on the front side and the rear side of the walking device, the supporting devices are fixedly connected with the walking device, the rotating device is installed over the walking device, the telescopic device is installed over the rotating device, the angle adjusting device is installed above the telescopic device, and the scraping-sweeping device is fixedly installed on the angle adjusting device. By means of the building indoor trim wall automatic scraping-sweeping treatment machine, the problems existing in existing manual wall scraping and sweeping can be solved, full-mechanical uniform wall scraping and sweeping are achieved, and the advantages that the scraping-sweeping speed is high, labor intensity is low, scraping and sweeping are uniform, dust is automatically scraped and swept, harm to workers is low, scraping-sweeping and grinding can be carried out at the same time, the scraping-sweeping angle is automatically adjusted, and walls with the gradient are scraped and swept are achieved.

The invention discloses an oil film sealing structure of a valve, and relates to the technical field of sealing structures, the oil film sealing structure comprises a valve main body, a connecting base, a sealing flange and a connecting pipe, the bottom of the valve main body is fixedly provided with the connecting base, the middle of the valve main body is provided with the sealing flange, and one side of the bottom of the sealing flange is fixedly connected with the connecting pipe. Through movement of the sleeving block towards the two sides, the sleeving block drives the sleeving clamping block to be separated from the limiting groove, the clamping separation effect is achieved, accordingly, the upper clamping plate and the lower clamping plate are conveniently and vertically separated, the limiting block is conveniently disassembled, then the telescopic rod telescopically moves to push the clamping block to eject out of the inner wall, separated from the sealing film, of the valve main body, and the sealing film is separated from the valve main body. And the problem that the oil film sealing structure of the valve is difficult to mount and dismount, so that the later maintenance and replacement of the oil film sealing structure are slow is solved, the device is convenient to dismount, the convenience of the device is improved, and the later maintenance of the device is facilitated.

The invention discloses a feed feeding device for mountainous areas which is easy to install and disassemble. A material storage room, the material storage room is connected to the discharge box by bolts, the base is provided on the underside of the discharge box, and the four corners of the base are detachably connected to the adjustable support column, By fixing the joints of the feed pipe, storage room, discharge box, base and adjustable support column in the feed feeding device with bolts, it is easy to disassemble, install and transport the feed feeding device, and improve The flexibility of the device can be adjusted according to the uneven road conditions of the mountain by setting an adjustable support column on the underside of the base. Finally, it is fixed in the soil through the soil cone of the bottom plate to improve the stability and functionality of the device.

The invention discloses an agricultural and forestry waste biomass energy storage and transportation stress protection device. The device comprises a support bottom plate, radian fixing plates, fixing plates, limiting plates, a pressure layer and a buffer assembly, wherein the buffer assembly comprises a buffer bottom plate, a vertical plate, an arc-shaped plate and a pressure spring layer; the radian fixing plates are vertically and fixedly connected to the two sides of the support bottom plate separately, and the upper parts of the radian fixing plates are of semicircular opening structures; the fixing plates are fixedly connected to the two sides of the radian fixing plates separately; threaded rods are in threaded connection with the surfaces of the upper parts of the fixing plates, and one ends of the threaded rods penetrate through the radian fixing plates to be movably connected with limiting plates; and the limiting plates are arranged at the upper parts of the radian fixing plates.

The invention discloses a slicer capable of preventing object moving. The slicer comprises a slicer body, a slicing device and a fixing device base, the top of the slicer body is embedded with the slicing device, the middle of the other side of the top of the slicer body is movably connected with a fixing device base, a fixing rod is embedded in the top of the fixing device base, a reinforcing screw rod is embedded in one side of the fixing rod, a desktop is embedded in the top of the interior of the slicer body, telescopic switches are embedded in the two sides of the bottom of the slicer body, the telescopic switches have stretching and retracting functions, the lengths of supporting legs can be adjusted through the telescopic switches, the desktop is allowed to be horizontal by adjusting the lengths of the supporting legs through rotating the adjusting nuts according to different grounds, a horizontally stable supporting face is provided, the influence on the slicer body caused by an uneven supporting face is effectively prevented, the innovation and functionality of the slicer body are improved through the telescopic switches, and the slicer has wide developing prospect in thefuture.

The invention discloses an air-type conveying and fixing device for marble. The air-type conveying and fixing device comprises a main hollow housing. Air has adsorption capacity under negative pressure, and can effectively adsorb and fix the marble, at the same time, a stable reverse thrust is formed between multiple touch panels and adsorption components, so that the function of fixing a bottom plate can be improved; and the device is provided with a spiral spring type maximum air difference pressure effective control mechanism that can effectively control the maximum air pressure differencebetween the inside and the outside by the elastic force of a spiral spring to prevent the damage to the bottom plate due to too high internal negative pressure, the device is provided with a piston plate air-sealed reciprocating mechanism which can realize the up-and-down reciprocating motion through the cooperation of the air state, and in addition, the device is provided with an air-connected surface adsorption and fixing mechanism that can be propped against the surface of the marble bottom plate and play a role of effectively adsorbing the bottom plate under the effect of negative air pressure.

The invention relates to a special wall spraying and plastering machine for architecture interior decoration and processing. The special wall spraying and plastering machine comprises a support device, a travel device, a translation device, a telescopic device, a spraying device and a plastering device. The support device is positioned on the front side and the rear side of the travel device and is fixedly connected with the travel device, the translation device is mounted above the travel device, the telescopic device is mounted above the translation device, the spraying device is mounted above the telescopic device, and the plastering device is mounted above the telescopic device. The special wall spraying and plastering machine has the advantages that the difficult problems of low work efficiency and high labor intensity of existing manual wall spraying and plastering, capability of only individually carrying out spraying and plastering, severe harm on workers due to spray coating, high oblique wall spraying and plastering difficulty and the like can be solved by the aid of the special wall spraying and plastering machine; walls can be mechanically sprayed and plastered by the aid of the special wall spraying and plastering machine, the special wall spraying and plastering machine is high in work efficiency and low in labor intensity, spraying and plastering can be integrally carried out, coating can be automatically sprayed and is low in harm on workers, spray angles can be automatically adjusted, and the like.

The invention relates to the technical field of medical instruments, and particularly relates to a sample storage device for the endocrinology department. The storage device fixes a detection sample, wherein a first clutch is meshed with a second clutch by triggering sliding of a base, then a first straight gear shaft and a second straight gear shaft are driven by a first end face gear, and the sample is fixed by a fixing block; a cleaning assembly cleans the interior of the device, a fourth straight gear shaft is meshed with a turbine, and then the interior of a sample storage box is cleaned by a brush; a disinfection device disinfects the detection sample; a fixing device fixes the detection device to an object to prevent the device from being damaged; and a first sliding bearing is driven by a control rod, then a first straight gear and a second straight gear are meshed with a second end face gear, and the whole device is fixed by a fixing support in use. The sample is fixed, the cleaning and fixing functions are added, and the service life of the device is prolonged in use.

The invention provides a multifunctional liquid drinking cup suitable for hemiplegic dysphagia patients, which comprises a vacuum cup body, the vacuum cup body is of a double-layer hollow structure, the upper end of the vacuum cup body is provided with an oblique notch, the vacuum cup body is provided with an insertion hole, the insertion hole is formed below the high point of the oblique notch, a bendable adjusting pipe is detachably mounted in the insertion hole, and the adjustable pipe is connected with the upper end of the oblique notch. One end of the adjusting pipe is arranged in the vacuum cup body and connected with a liquid guide pipe, the other end of the adjusting pipe is connected with a massage spoon and a massage suction pipe, and a hole sealing plug is further installed at the inserting hole. The device can be used by hemiplegic and dysphagia people for drinking training and drinking at ordinary times, helps the hemiplegic and dysphagia people to drink liquid conveniently, accurately and safely, and also has a certain effect of promoting rehabilitation of limbs and swallowing functions. The device can be used as required by stages according to illness conditions, is convenient to switch, reduces the risk of mistaken swallowing and mistaken suction, improves confidence, interest, efficiency and safety of drinking liquid, relieves physical, mental and economic burdens, and is beneficial to restoring the ability of autonomously drinking liquid as soon as possible.

The invention provides a preparation method of a carbon nanometer fiber / beta-cyclodextrin based nanometer fiber film with a sandwich structure. The method is characterized in that the nanometer fiberfilm employs beta-cyclodextrin as a substrate, citric acid as a cross-linking agent, beta-cyclodextrin as a reinforcing phase, and a polymer for assisting film forming, and is the nanometer fiber filmwith the electrospun carbon nanofiber enhanced polymer / beta-cyclodextrin-polyacrylic acid / polymer three-layer sandwich structure. The nanometer fiber film with the sandwich structure has good adsorption and fixation effects for heavy metal ions (such as Cd(II), Cu(II), Fe(III) metal cations) in aqueous solution. The preparation process has the advantages of simple and easy operation, easily available raw materials, environmental friendliness, and low cost, and the method can be applied to water treatment and biomedical fields which need high efficient separation and fixation of heavy metal ions.

A combing element for a combing machine for combing textile fibres comprises a basic body (2) with a centre longitudinal axis (3), a circumferential surface (4) and two end surfaces (5), at least one catch (10) which is arranged on the circumferential surface (4) of the basic body (2), a profiled strip (9) for connecting the at least one catch (10) to the basic body (2), and a torsion rod (16) for locking and unlocking the profiled strip (9) on the basic body (2), wherein the profiled strip (9) is arranged in a receiving groove (14) of the basic body (2) and comprises a pivoting lever (19), by means of which the profiled strip (9) can be pivoted about a pivot axis (20) which is arranged parallel to the centre longitudinal axis (3), the torsion rod (16) is arranged in the receiving groove (14) such that it can be rotated about a rotational axis (17) which is arranged parallel to the centre longitudinal axis (3), the torsion rod (16) is accessible from outside the combing region, in particular from at least one of the end surfaces (5), the torsion rod (16) has a non-round cross section which is oriented perpendicularly with respect to the rotational axis (17), the torsion rod (16) is arranged on the pivoting lever (19) in such a way that, as a result of a rotation about the rotational axis (17), the torsion rod (16) can be displaced between a locked position for locking the profiled strip (9) on the basic body (2) and an unlocked position for unlocking the profiled strip (9) on the basic body (2).