112results about How to "Not easy to pass through" patented technology

The invention provides a display panel including a substrate, an opposite substrate and a display medium layer. The substrate includes a plurality of pixel arrays, a plurality of data lines, a plurality of scanning lines, an insulation layer covering the data lines, the scanning lines and the pixel array, a conductive shading layer overlapped with the data lines in the vertical projection direction and arranged on the insulation layer and a first transparent electrode arranged on the insulation layer. The first transparent electrode includes a first part and a second part, wherein the first part is contacted with the conductive shading layer directly and is connected electrically. The opposite substrate includes a shading pattern layer having a first shading part and a color filtering layer arranged on the shading pattern layer. The first shading part is overlapped with the data lines in the vertical projection direction. The width of the first shading part is W1 while the width of the conductive shading layer is W2. Each data line is W3 wide. W1>=W2>=W3.

The invention provides an flow battery negative electrode electrolyte based on alizarin or derivatives thereof, and a flow battery adopting the electrolyte as a negative electrode. The electrolyte is an alkaline aqueous solution containing the alizarin or the derivatives thereof. The alizarin and the derivatives contain at least one of alizarin (1,2-dihydroxyanthraquinone), alizarin red (1,2-dihydroxyanthraquinone-3-sulfonic acid) or alizarin fluorin blue (3-alizarin methylamine-N,N-diacetic acid and mixtures thereof. An alkali used in the invention comprises at least one of sodium hydroxide, potassium hydroxide and a sodium hydroxide and potassium hydroxide mixture. The working temperature of the electrolyte is 10-50 DEG C; and the flow battery based on the electrolyte is a traditional structure, and comprises a positive electrode liquid storage tank 1, a positive electrode electrolyte 3, a negative electrode liquid storage tank, the negative electrode electrolyte 4, pumps 7 and 8, and a cation exchange membrane 9 for conducting cations. The active substance of the alizarin flow battery negative electrode electrolyte is bulk anions, and difficultly penetrates through a proton exchange membrane; and the electrolyte disclosed in the invention has the characteristics of no toxicity, no pollution, no rare earth elements, and obvious price advantage.

The producing process of the chrome oxidation compounding layer relates to the producing the hard layer. The invention mainly solves the problem of the high rubbing quotiety of the traditional hard layer, the bad felting intension, the bad causticity-resisting and the difficult controlling the proportion of the tantalum on the excessive tantalum compounding layer. adopting the nonbalance shooting frequent action magnetism controlling spattering system and the chrome with the stronger causticity-resisting and the higher rigidity, the single chrome metal is used to produce the compounding layer, when producing, the shooting chrome metal is used for the transitional layer, the oxygen is added, the oxygen flux and spatter shooting power are adjusted unceasingly; when the oxygen flux reaches to the tiptop, the direct current negative deflection voltage is turn on. The rubbing quotiety of the layer provided by the invention is low, the milling-resisting is high and the causticity-resisting is well. The process is easy, all material is ordinary and the industrial production can be realized.

The invention provides a high-energy X-ray industrial CT ionization detector, which can overcome the defects of scintillator detectors and is suitable for radiation detection of a high-energy X-ray industrial CT system. The detector comprises seal housing which is filled with working gases and is provided with a plurality of ionization chamber units; the ionization chamber unit is elongated and comprises a U-shaped ionization chamber wall and a latten; a receiving terminal of the X-ray on the latten is fixedly arranged at an open end of the U-shaped ionization chamber wall via an insulation sheet; the other end of the latten is arranged in the ionization chamber and spread along the length direction of the ionization chamber; the latten, with thickness less than or equal to 0.3mm, is manufactured by high-density metals with high atomic number or the alloy of the metals; a coat on which secondary electrons are easily generated covers the external surface of the latten; the U-shaped ionization chamber wall is connected with a signal processing circuit as a collector; the latten is connected with a high-voltage cathode and a high-voltage power supply as a radiation converter.

The invention discloses a preparation process of a porous hollow ceramic adsorption ball, belongs to the field of ceramic materials. The preparation process of the porous hollow ceramic adsorption ball can obtain a hollow porous ceramic ball through the cooperative use of a reticular steel ball and an internal false solid bag. Compared with the prior art, the process can effectively avoid the problems that the ceramic utilization rate is low due to the fact that the porosity of the center of the ball body is small, waste of ceramic materials is reduced, meanwhile, inert gas is introduced intothe ceramic ball semi-finished product in the preparation process, the reinforcing hard ball collides with the inner wall of the ceramic ball semi-finished product, reinforcing fiber particles are released, and in combination with rapid cooling operation, the reinforcing fiber particles enter the pores of a ceramic material layer along with the inert gas and are fixed, on one hand, the inert gas can increase the pore volume in the center of the ceramic material layer, so that the uniformity of the pores of the obtained porous hollow ceramic adsorption ball is improved, and on the other hand, the reinforcing fiber particles can remarkably improve the adsorbability of the interior of the ceramic material layer to oil stains.

The invention discloses an elevator heat preservation and sound insulation decorative sheet. The elevator heat preservation and sound insulation decorative sheet comprises a clamping plate layer, a fixing layer and a heat preservation layer. The heat preservation layer comprises multiple stages of heat insulation layers, and the multiple stages of the heat insulation layers are all formed by filling thermal insulation materials. Heat preservation separation plates are arranged between every two adjacent heat insulation layers. Grid plates are arranged in all the stages of the heat insulation layers and further divide all the stages of the heat insulation layers into a plurality of heat preservation areas. Heat preservation separation plates located between every two adjacent heat preservation areas are provided with heat conduction holes and stopping pieces which are movably embedded into the heat conduction holes. Driving parts used for driving the stopping pieces to be opened or for shielding the heat conduction holes are arranged between the stopping pieces and the heat preservation separation plates. The moving distance of the stopping pieces driven by the driving parts and the temperature variation amplitude in the heat preservation areas are set in a positive correlation mode. The multiple stages of the heat insulation layers are arranged and further divided into the multiple heat preservation areas which are conditionally connected, transmission efficiency of heat in the heat preservation layer is lowered through the heat preservation areas, heat transmission can be guided in a directional mode, the heat does not penetrate through the heat preservation layer to form a heat conduction access directly, and accordingly a good heat preservation effect can be achieved.

The invention provides a camptothecin medical lipidosome composition. The camptothecin medical lipidosome composition is prepared from the following raw materials and supplementary materials in parts by weight: 5 to 25 parts of camptothecin medicine, 40 to 100 parts of phospholipid, 6 to 50 parts of cholesterol, 1 to 8 parts of vitamin E, and 10 to 100 parts of amino compound. According to a preparation method of the camptothecin medical lipidosome composition, the camptothecin medical lipidosome composition is prepared in a multi-emulsion way and an inverted evaporation way. The aqueous solution of the amino compound has a solubilizing effect respect to the camptothecin medicine, and can generate a water-soluble compound under the effect of intermolecular interaction or ionic bond effect. The compound is stable in physiological pH (Potential of Hydrogen) and higher in solution concentration, and can be wrapped in the inner cavity of lipidosome, therefore, the amount of the medicine in transfer can be increased, and the problem that the lactonic-ring type camptothecin medicine is subjected to high ring opening to result in leakage due to the influence of the pH and the plasma proteins can be avoided. The compound is stably wrapped in the lipidosome, and can reach the tumor part under the targeting effect of the lipidosome and then act in form of lactonic ring under the acidic condition of the tumor cells; and the compound has the advantages of increasing effect and reducing toxicity.

The invention relates to the technical field of outdoor green buildings, in particular to an outdoor green-plant curtain wall. The curtain wall includes a wall body, an installation frame, a plantingcomponent, a collection box, and a recycling box, wherein the collection box is fixedly arranged on the wall body and located above the planting component, and the recycling box is fixedly arranged onthe wall body and located below the planting component. The top of the collection box is provided with an opening, the collection box is provided with a water feeding end and a water discharge end, the water discharge end of the collection box is communicated with a spray component, the top of the recycling box is provided with an opening, the lower end of the recycling box is communicated with awater outlet pipe which is communicated with the water feeding end of the collection box, a water pump is arranged at the water outlet pipe, a filtering component is arranged in the recycling box, and the filtering component includes a first filtering plate and two second filtering plates, one side of the first filtering plate is hinged to one of the second filtering plates, and the other side ofthe first filtering plate is hinged to the other of the second filtering plates, the sides, away from the first filtering plate, of the two second filtering plates are provided with connection parts,and the side wall of the recycling box is provided with through grooves, and the connection parts are in inserted connection with and matched with the through grooves.

The invention provides a semiconductor structure and a forming method thereof. The forming method comprises the steps that a base is provided, the base comprises a substrate, fin parts separately arranged on the substrate and a gate structure stretching across the fin parts, and the gate structure covers part of the top surfaces and part of the side walls of the fin parts; partial thickness of thefin parts on two sides of the gate structure are removed, grooves located in the two sides of the gate structure are formed, each groove comprises a first groove and a second groove located in the bottom end of the first groove, each first groove comprises a first side wall close to the gate structure, each second groove comprises a second side wall close to the gate structure, and each second side wall is located on the side, close to the gate structure, of the corresponding first side wall; and source-drain doped layer is formed in the grooves. According to the embodiment of the invention,the fin parts below the gate structure are used as channels, because the second grooves are located at the bottom ends of the first grooves, the distance between the source-drain doped layer located in the second grooves and the gate structure is relatively long, and it is not easy to diffuse doped ions in the source-drain doped layer to the gate structure, so that the breakdown resistance of thesemiconductor structure is improved.

The invention discloses an integrated aerobic granular sludge dynamic membrane bioreaction wastewater treatment device, which comprises a membrane bioreactor (1) loaded with aerobic granular sludge and is characterizes in that the membrane bioreactor is provided with a wastewater inlet (2), a filtering water outlet (3) and a direct water outlet (4), a membrane component (5) is arranged in the membrane bioreactor, a hollow structure is arranged in the membrane component (5), the membrane component (5) is communicated with the filtering water outlet (3) via a filtering pipeline, both of the highest height of the membrane component (5) and the height of a liquid level of the direct water outlet (4) are lower than the height of the liquid level of the filtering water outlet, and a lower end of the membrane component is provided with a micropore aerator (6). The device is economical, high-efficient and stable in wastewater treatment, and the reactor is compact in structure and wide in application range, occupies small area, and is flexible to operate.

The invention discloses a garbage combustion fly ash filtering device based on local membrane separation. The invention belongs to the technical field of garbage combustion. According to the garbage combustion fly ash filtering device, ammonium chloride powder in an air bag is heated and decomposed into hydrogen chloride gas and ammonia gas through high-temperature flue gas and continuously expands; an arc-shaped movable sheet is pushed to move upwards to extrude a hot melt adhesive solution out of a slow-release ball bag; under the action of microvilli at the outer ends of rubber thorns, theouter ends of the rubber thorns are covered with the hot melt adhesive liquid; barbs on an animal tongue and mucus on the surface of the animal tongue can be simulated through the rubber thorns and the hot melt adhesive liquid; particulate matters in the flue gas are adsorbed; after the temperature returns to the normal temperature, hydrogen chloride gas and ammonia gas react to generate an ammonium chloride solid and enable the air bag to shrink quickly, and under the action of pressure difference, particulate matters between an exhaust pipeline and an upper filter membrane are absorbed intothe slow-release ball bag and adsorbed by the adsorption layer and the hot melt adhesive on the surface of the adsorption layer, so that the smoke filtering effect is improved.

The invention discloses a scrap iron removal device for a wire cutting machine cooling liquid. The device comprises a filtering device, a driving part and a cleaning device, the filtering device comprises two overturning frames, the two overturning frames are symmetrically arranged on the two opposite edges of the upper surface of a cooling liquid box, the two overturning frames are V-shaped and shield the upper surface of the cooling liquid box, rotating rods are fixedly connected to two opposite outer side walls of the overturning frame respectively, the edge of one side of the cooling liquid box is rotationally connected to the rotating rod, one layer of a filter screen is fixedly arranged in the overturning frames, one layer of a filter screen is positioned between the rotating rod andthe edge, parallel to the rotating rod, of the overturning frame, the driving part is connected to the overturning frame and plays a role in supporting of the overturning frame, the driving part candrive the overturning frame to overturn relative to the cooling liquid box, a collecting box is fixedly connected to the outer side wall of the cooling liquid box, the collecting box is arranged belowthe overturning frame located on the outer side of the cooling liquid box, and the cleaning device can clean scrap iron on one layer of the filter screen. According to the device, the function of conveniently removing scrap iron in the cooling liquid is achieved.

The invention relates to the technical field of slope greening, in particular to a slope greening protection structure and a construction method thereof. The slope greening protection structure comprises a film layer, a cement base layer and a hollow fixing pile. The film layer is arranged at the bottom of the cement base layer; the hollow fixing pile is prearranged in the cement base layer; a pressing plate is arranged on the side, corresponding to the ground, of the hollow fixing pile; a sharp hollow guiding head is arranged at the bottom end of the hollow fixing pile, fertilizer is poured into the guiding head, and an annular hole is formed in the position corresponding to the upper portion of the guiding head; and a planting pile is inserted into the hollow fixing pile, supporting plates are arranged at the bottom of the planting pile, gaps between the supporting plates form cavities, and plant planting bags are planted into the cavities along the hollow fixing pile. Through fertilizer tropism and hydrotaxis of plant rootstocks, the rootstocks can grow into slope soil layers along the annular hole of the hollow fixing pile; the slope soil layers are fixed; and force of the soillayers and a concrete layer is transferred to a rock layer.

The invention discloses a fixed-point reinforced cable capable of automatically inhibiting a bending angle, and belongs to the field of cables. According to the fixed-point reinforced cable, through arrangement of an outer multi-ball-point inhibition rod and an inner multi-ball-point inhibition rod, when the cable is bent, inner reinforcing balls at the bending portion can be gradually close to outer reinforcing balls corresponding to the inner reinforcing balls by the pushing force generated by bending, along with the increased bending angle, the inner reinforcing ball at the position can befinally clamped between the two corresponding outer reinforcing balls, on one hand, the strength of the contact part of the outer reinforcing balls and the inner reinforcing balls is obviously improved, and on the other hand, the two parts extrude each other to harden, thereby effectively improving the strength and hardness of the bending point, enabling the cable to effectively inhibit the continuous bending of the bending point, effectively inhibiting the bending range, effectively protecting the bending point of the cable from being aged and damaged, and reducing the potential safety hazardof long-term use.

A sealer for cylindrical capacitors has a round first planar surface and a round second planar surface on the side opposite to this first planar surface, and two lead holes are provided passing through the first and second planar surfaces. This sealer for capacitors comprises butyl rubber and a flat inorganic material. Furthermore, the sealer has a first part and second parts, which are in the proximity of the periphery of the sealer and in the proximity of the two lead holes. The flat inorganic material is scattered in the first part such that the flat surface thereof is oriented substantially parallel to the first planar surface. The flat inorganic material is scattered in the second part such that the flat surface thereof is oriented in a substantially perpendicular direction to the first planar surface.

The invention relates to the field of food processing and particularly relates to a meat and skin treatment device. The meat and skin treatment device comprises a rack, a hair removing device and a cutting device, wherein the hair removing device comprises a rosin container; a heat source is arranged at the bottom of the rosin container, and a meat and skin storage layer is arranged in the rosin container; mesh holes are formed in the meat and skin storage layer; a through hole is formed in a side wall of the rosin container; the horizontal position of the through hole is 0.1cm-0.5cm higher than the meat and skin storage layer; the cutting device comprises a first air cylinder fixedly connected onto the rack and a second air cylinder which is in sliding connection with the rack; an output end of the first air cylinder is connected onto the second air cylinder; the second air cylinder is located above the meat and skin storage layer; a cutter knife group is mounted at the output end of the second air cylinder; the cutter knife group comprises a base plate and a plurality of cutters which are arrayed on the base plate in parallel; and the cutters are arranged obliquely. By implementing the technical scheme, the problems in the prior art that steps of treating pig skins are more and cutting shapes are not regular are solved.

The invention discloses probiotic fermented soft granules and a preparation method thereof, which belongs to the technical field of feed preparation, according to the scheme, soft particles are fermented through probiotics; the water content in the soft particles is improved; the water absorption layer is used for continuously absorbing water in the soft particles; therefore, the water absorptionlayer is quickly expanded; the carbon dioxide gas in the double-ring ball air bag is extruded out; the post-anaerobic environment is provided for the probiotic bacillus; therefore, the growth and propagation are improved; the double-ring ball air bag is extruded to be broken by the water absorption layer; the magnetic attraction effect between the magnetic movable ball and the magnetic powder is used; the magnetic powder is fully distributed on the surfaces of the screening ball bulges; according to the expansion type water absorption ball, soft particles can be screened in the moving processof the magnetic movable ball, the possibility that the soft particles adhere to one another to form a block is reduced, the soft particles in the expansion type water absorption ball can be pushed andextruded after the expansion type water absorption ball expands, and part of the soft particles adhering to one another due to water penetrate through the screening filter screen to scatter the softparticles adhering to the block.

The invention discloses an optical assembly and an illuminating device. The optical assembly comprises a body, a light entering surface and a light exiting surface. Concave space is formed in the bottom of the body. The light entering surface is defined by the concave space of the body, so that light can enter the light entering surface, moreover, the light entering surface is provided with an annular region, a plurality of micro-structures are arranged on the annular region of the light entering surface at least, and each micro-structure is provided with a cambered surface. The light exiting surface is formed on the outer surface of the body, and the bottom edge of the outer surface is adjacently connected to the outer edge of the bottom of the body. The illuminating device comprises the optical assembly and a light source. By the optical assembly and the illuminating device, yellow ring circumstances can be reduced, the utilization rate of light is improved, and the problem of central bright spots is solved.

The invention discloses a traction guide type biological oil absorption device for food processing sewage, and belongs to the technical field of sewage treatment. According to the scheme, a pluralityof oil removal floating boxes float on sewage; the oil removal floating boxes are pulled to freely float on the surface of the sewage towards the oil drops under the action of pulling the movable ballto move towards the oil drops; an oil bleaching layer is formed at the periphery of the oil removal floating boxes; the oil stain can be fully absorbed by the oil absorption paper conveniently; the electromagnet is started after the greasy dirt adsorption is finished, magnet balls is enabled to move up, and thus the traction moving ball is pulled to contact with the orifice of the oil flow hole;the roughness of the surface of the whole traction moving ball can be increased by virtue of the tip bulges so that when oil drops contact with the traction moving ball, a layer of oil film can be formed on the surface of the traction moving ball, and the sealing effect on the oil flowing hole can be improved by virtue of the sealing performance of oil, and thus when the oil removal buoyancy tankis taken out of sewage, the possibility that oil stains drop into the sewage again can be reduced, and the absorption efficiency of the oil drops is improved.

A formation method of radio frequency components comprises a back substrate, a buried oxide layer and an upper insulator semiconductor layer. The buried oxide layer covers on the back substrate, and the upper insulator semiconductor layer covers on a top semiconductor layer of the buried oxide layer; a transistor and an interlayer dielectric layer covering on the transistor are formed on the surface of the top semiconductor layer. The formation method includes providing a smooth-surfaced temporary support layer, and jointing the surface of the interlayer dielectric layer and the temporary support layer; removing the back substrate till the buried oxide layer is exposed; providing a high-resistance-rate substrate, and jointing the same with buried oxide layer; removing the temporary support layer to expose the surface of the interlayer dielectric layer after the high-resistance-rate substrate is jointed with the buried oxide layer. By the formation method of the radio frequency components, signal loss is low, and linearity is high.

The invention relates to a garden road structure capable of quickly draining, and belongs to the technical field of garden roads. The garden road structure capable of quickly draining comprises a roadbase layer and a road surface layer located above the road base layer, wherein the road surface layer and the road base layer are permeable road surface layers; a draining buffer layer is arranged between the road surface layer and the road base layer, and comprises multiple hollow brick bodies arranged sequentially and permeable plates arranged in the hollow brick bodies; permeable holes directly facing and penetrating through the hollow brick bodies are formed in the top parts and the bottom parts of the hollow brick bodies; the permeable plates are horizontally arranged in the hollow bricks; vertical elastic elements are arranged between the lower surfaces of the permeable plates and the hollow brick bodies; water passing holes are formed in the permeable plates and are staggered withthe permeable holes; and draining ditches are arranged on two sides of the road surface layer. The garden road structure capable of quickly draining provided by the invention has the effects on quickly draining when rainfall is large and maintaining more rainwater in a road when the rainfall is small.

The invention discloses a thermal-type based oily sewage pipeline cleaning device and belongs to the technical field of sewage treatment. According to the thermal-type based oily sewage pipeline cleaning device, when oily sewage is discharged through a drainage pipeline, a water swelling water stop ring rapidly swells in water, and part of the oily sewage reacts with calcium oxide powder to generate calcium hydroxide, so that the dissolution of oil stains can be accelerated through alkaline calcium hydroxide, and a large amount of heat is generated; gas in a storage cavity swells and pushes open a rubber sealing sheet and then is blown out along with the rise of the temperature in the storage cavity; and by means of the reactive force during the gas discharge, the whole of a thermal-type cleaning ring can move upwards along the drainage pipeline, so that the oil stains generated on the inner wall of the drainage pipeline are cleaned; the oil stains enter an annular connecting frame andare mixed with foaming powder, and a large amount of foam can be generated, so that the foam is blown to the inner wall of the drainage pipeline, and the inner wall of the drainage pipeline can be further cleaned.

The invention discloses a wire fencing rotating passing mount. The wire fencing rotating passing mount comprises an inserting base and post mounts, wherein a post limit groove is formed in the top of the inserting base, two opposite fixing lugs are respectively arranged on the two sides of the top of the inserting base, the post mounts are arranged on the fixing lugs, and the bottom end of a fencing post of a wire fencing penetrates through the post mounts and is positioned in the post limit groove. The wire fencing rotating passing mount has the advantage that through the mode of combining the fencing post with the inserting base, the wire fencing is rotated for 90 degrees by the fencing post with the inserting base as a fulcrum and can be automatically locked. The wire fencing rotating passing mount ensures that vehicles, passengers or livestock safely, conveniently and rapidly pass the wire fencing, the passing time is shortened, the passing rate is improved, and the efficiency of power line maintenance in a pasturing area is improved. After vehicles, passengers or livestock pass, the wire fencing can return to the original form, other vehicles cannot find or pass, and the device ensures the integrity of the wire fencing and protects the interests of shepherds.

The invention relates to an easy-washing and quick-drying garment provided with a waist-tightening elastic material. The garment comprises a garment body (1) which is made of pure cotton and provided with a V-shaped collar (2), wherein a lower hem (3) is arranged at the bottom of the garment body (1) and adopts an elastic band knitted at the bottom of the garment body (1); a lining layer (4) is woven on the back of the garment body (1) and made of cashmere wool; two pieces of elastic fabric (5) are woven at the waist part of the garment body (1) and made of high-elasticity spandex filaments; the garment body (1) is made of fabric interwoven by warp yarn and weft yarn, the warp yarn and the weft yarn adopt covering yarn of cotton covered polyester filament yarn, and the cross section of the polyester filament yarn is in a pentagram shape. The garment can keep warm effectively, has a windproof effect, and is easy to wash and quick to dry.

The invention discloses gauze for eye surgical nursing, belongs to the field of medical gauze, and aims to solve the problems that in the process that a patient wears the gauze for eye surgical nursing, the gauze is in contact with light rays, the light rays cause aging of a net-shaped chip, the net-shaped chip in a stretched state is easily torn in the direction of a prefabricated groove, and shrinks to form a spherical falling ball. According to the gauze for eye surgical nursing, on the one hand, the light penetrating capacity is gradually increased, light capable of being received by eyes is gradually increased, and the adaptability of the eyes of a patient is enhanced; and on the other hand, when the net-shaped chip is in a normal state, the elastic fibers can capture dust and sundries, and when the net-shaped chip partially falls off to form the falling ball, the elastic fiber is located on the inner layer of the falling ball, secondary pollution is not prone to being formed, on the premise that normal work of the gauze is not affected, light felt by eyes covered by the gauze of the patient can change slowly along with time, and enough adaptation time is provided for the eyes of the patient.

The invention discloses an electric drill capable of achieving protection function diversification, and belongs to the field of electric drills. The electric drill capable of achieving protection function diversification comprises an electric drill body, an installing base is movably connected to the electric drill body, a drill bit is inserted into the installing base, an anti-separation rod is fixedly connected to the outer end of the drill bit and located on the side close to the installing base, the side, far away from the installing base, of the anti-separation rod is provided with a shell body, the shell body is provided with a central round hole matched with the drill bit and a strip-shaped hole matched with the anti-separation rod, and the drill bit is inserted into the central round hole. Through the structures such as the anti-separation rod, the shell body and an adjusting rod body, the drill bit is not prone to flying out to hurt a worker, and the jammed drill bit can be conveniently pulled out; meanwhile, splashing of dust particles can be effectively blocked, the eyes of the worker are protected, and then the drilling security coefficient is improved; and in addition,the maximum hole depth can be determined in advance, and the consistency of the depths of multiple holes can be effectively kept.

The invention relates to the technical field of processing of shoes, in particular to a shoelace placement device. The shoelace placement device comprises a conical metal container with a downward head, a round opening is formed in the center of the top of the metal container, and the metal container contains talcum powder. The shoelace placement device is characterized in that the top surface of the metal container is horizontally placed, connecting buckles are evenly arranged on the top edge of the metal container in the peripheral direction and are hung through ropes inclining outwards, a magnet layer is arranged on the inner side of the bottom of the metal container, and a metal end socket for absorbing a shoelace is arranged on the outer side of the bottom of the metal container. By means of the technical scheme, the shoelace is prevented form abrading the hands of workers easily, is not prone to being knotted and can penetrate through a shoe buckle more easily.