210 results about "Nylon mesh" patented technology

The invention provides inter-plant mycorrhiza nutrient transfer culture equipment which comprises a culture box body and an organic glass plate, an inner cavity of the culture box body is divided into a first culture chamber and a second culture chamber through the organic glass plate, the organic glass plate is a porous glass plate, and a white nylon net is pasted on one side of the porous glass plate. And the white nylon net is divided into a white nylon net with the aperture of 0.45 mu m and a white nylon net with the aperture of 37 mu m. The equipment is small in size, small in occupied area, cheap in material, convenient to assemble and suitable for pot culture experiments of large-batch samples, soil ions are allowed to pass through by means of 0.45 microns, ectogenic hyphae and the soil ions are allowed to pass through by means of a white nylon net of 37 microns, the soil ions, the ectogenic hyphae and root systems are allowed to pass through a nylon-free net, and the soil ions, the ectogenic hyphae and the root systems are allowed to pass through. Compared with the prior art, direct and indirect paths of nutrient transfer between plants can be distinguished and quantified, and the method is simple and easy to implement.

The invention discloses a field miniature PVC litter decomposition experiment ring which comprises a miniature ring structure, observation opening structures are oppositely formed in the outer surface of the miniature ring structure, a nylon net structure with the pore diameter of 5 mm is glued in an inner cavity of one observation opening structure, a nylon net structure with the pore diameter of 50 microns is glued in the other observation opening structure, and the inner cavity of the other observation opening structure is glued with a nylon net structure with the pore diameter of 50 microns. The top of the outer ring of the miniature ring structure is sleeved with a disassembly and assembly ring, and a cover net structure which is in a stretched state and has the aperture of 50 micrometers is glued to the top of the disassembly and assembly ring. Firstly, the influence of microenvironment interference and physical limitation in the litter decomposition process is solved, and the situation that the decomposition rate deviates from a true value due to litter compaction and rainfall erosion in the environment is avoided; secondly, the problem that a litter mesh bag method changes the feeding preference of soil animals is solved, it is ensured that the decomposition behavior is consistent with the natural state, and finally, due to the fact that the decomposition process is protected by the miniature environment, the influence of human factors and large animals is avoided.

The invention relates to an integrated device and method for in-situ mineralization of rainwater through a bioretention facility. The integrated device comprises a bioretention device body, and the bioretention device body is composed of a super high-rise building, a water storage layer, a covering layer, a filler layer and a drainage layer from top to bottom. The invention further provides a method for in-situ mineralization of rainwater through the integrated device, and the method comprises the steps that the rainwater flows into the super high-rise building through the road surface confluence and flows into the water storage layer from the super high-rise building, and the rainwater passing through the water storage layer infiltrates into the covering layer; the rainwater infiltrated through the covering layer enters the filler layer; rainwater mineralized by the filler layer infiltrates into the drainage layer, the water volume in the drainage layer is gradually increased and the water storage liquid level is gradually increased along with the convergence of the rainwater, and when the water storage liquid level of the drainage layer exceeds the height of the upper edge of the perforated drainage pipe, the rainwater flows into the perforated drainage pipe through the nylon net, so that in-situ mineralization and collection of the rainwater are realized. According to the invention, the problems of scattered layout, large occupied space, complex operation and the like of the existing sectional mineralization treatment technology are solved.

The invention belongs to the technical field of salix psammophila sand barrier laying, and particularly relates to an automatic degradable nylon net sand barrier combined mechanical salix psammophila sand barrier laying machine which comprises a vehicle body, salix psammophila strip finished products, a partition wall, a containing groove, a pushing structure, an avoiding type downward pressing structure, a reciprocating type net distributing structure and a net clamping assembly. A plurality of finished salix psammophila strips can be quickly inserted into sand land through an arranged receding type downward pressing structure, planting efficiency is high, planting grooves do not need to be dug manually, meanwhile, nylon nets can be attached to the finished salix psammophila strips in an S shape through an arranged reciprocating net distribution structure, and by attaching the nylon nets to the finished salix psammophila strips in an S shape, the yield of the finished salix psammophila strips is improved. The whole stability of the salix psammophila strip finished products is improved, local collapse of the salix psammophila strip finished products is avoided, meanwhile, gaps between every two adjacent salix psammophila strip finished products can be sealed through the nylon nets, the meshes of the nylon nets can disperse and weaken the impact force of wind and sand on the salix psammophila strip finished products, wind erosion to soil is reduced, and soil preparation and treatment are conducted on sand land.

The utility model discloses an air-regulating noise reduction structure and an electronic cigarette, the air-regulating noise reduction structure is arranged on the electronic cigarette, the air-regulating noise reduction structure comprises an air-regulating valve body, a noise reduction sheet and a gland, the air-regulating valve body is a plane plate, one side of the plane plate is provided with a first through hole penetrating through the upper surface and the lower surface, and the gland is provided with a second through hole penetrating through the upper surface and the lower surface. A shifting part for shifting the air adjusting valve body is arranged at the bottom of the surface plate; the silencing sheet is stacked on the surface plate, and a plurality of micropores are formed in the silencing sheet; the gland covers the surface plate and the silencing piece, and a second through hole is formed in the position, corresponding to the first through hole, of the gland. The silencing piece is a 100-mesh nylon net or a sponge piece or a porous ceramic piece. The first through hole is a special-shaped through hole of which the upper and lower orifices are horn-shaped and the middle is narrow; and the aperture of the second through hole in the gland is larger than that of the upper orifice of the first through hole. The air adjusting and noise reduction structure is arranged between an air channel, entering an oil cup atomization channel, of the electronic cigarette and an air inlet of an outer shell, the air inlet size of the electronic cigarette is adjusted, and meanwhile the noise reduction effect is achieved.

The utility model relates to the technical field of carriers, and discloses a photovoltaic module carrier which comprises a plane plate, a fixing device is fixedly installed on the outer surface of the front end of the plane plate, and the fixing device comprises a clamping groove plate, a plug pin buckle, a fixing block, a fiber bandage, a rubber strip and a nylon net. When the device is used, the clamping groove plates are installed at the front end and the rear end of the surface plate through the arranged fixing device, the plug pin at the lower end of the fixing block is buckled and inserted into the clamping groove plates, and the fiber bandage can be located at the upper end of the surface plate; the photovoltaic module at the upper end of the plane plate can be wrapped and fixed through the rubber strip and the nylon net, the situation that the photovoltaic module falls off in the carrying process is avoided, and the photovoltaic module is attached and fixed through the soft material, so that corners for fixing the photovoltaic module are not abraded, the use safety is improved, people can conveniently and rapidly assemble and disassemble the photovoltaic module, and the practicability is high. And the working efficiency of carrying the photovoltaic module is improved.

The invention discloses an automobile air conditioner filter which comprises an outer frame and a filter element, the filter element comprises a piezoelectric ceramic vibrating reed, a mounting aluminum plate, a rubber pad, a nylon grid support and a filter inner core, the filter inner core is mounted in a mounting cavity of the nylon grid support, and the rubber pad is fixed to the bottom of the nylon grid support. And the mounting aluminum plate and the piezoelectric ceramic vibrating plate are sequentially fixed at the bottom of the rubber pad. The self-cleaning filter element has the beneficial effects that in-situ self-cleaning of the filter element is realized, dust is vibrated off through high-frequency vibration of the piezoelectric ceramic vibrating reed, the filter element is prevented from being blocked, good filtering performance is maintained, and the service life is prolonged; power consumption is low, and energy consumption is reduced by utilizing the characteristics of the piezoelectric ceramic vibrating reed; efficient transmission of vibration energy is guaranteed, and the mounting aluminum plate and the rubber pad act synergistically, so that the dust removal effect is optimal; and the structure is compact and reasonable, all parts are stably connected, the fault probability is reduced, and the service life of the filter is prolonged.

The utility model discloses a riverway flotage collecting device which comprises a mounting frame, a circulating water tank, a water pump tank, a collecting barrel and a lifting driving structure, the mounting frame is of a concentric-square-shaped structure, a plurality of sets of connecting angle iron are evenly distributed on one side wall of the mounting frame in the height direction, and mounting holes are formed in the two ends of the connecting angle iron. The water pump tank is arranged at the bottom of the mounting frame, the circulating water tank is arranged on the water pump tank and communicated with the water pump tank, a circulating water pump is arranged in the water pump tank, the water outlet end of the circulating water pump penetrates through the water pump tank and extends to the outside, the circulating water tank is of a cylindrical structure, and the side wall of the collecting barrel is slidably arranged in the circulating water tank. A trash holding nylon net is arranged in the collecting barrel, and the lifting driving structure is arranged on the mounting frame and connected with the collecting barrel. The utility model relates to the technical field of river channel cleaning equipment, and particularly provides a river channel floating object collecting device.

The utility model relates to the technical field of electric power engineering, and discloses a dustproof distribution box for electric power hardware, which comprises a protective shell, a waterproof shed, a cabinet door, a lock catch, a hinge, a distribution box main body, a water guide plate, a water drip, a stainless steel mesh, electrostatic precipitation paper, a nylon mesh and a high-flux filter material, the waterproof shed is designed to cover the top of the protective shell, has an arc shape, effectively guides rainwater to flow away and prevents water from directly entering the distribution box, and the base provides a stable supporting foundation for the distribution box and can be firmly installed on the ground through fixing bolts. According to the dustproof distribution box for the electric power hardware, through the combination of the well-designed waterproof shed and the water guide plate, the distribution box can effectively prevent rainwater and other liquid from directly invading, meanwhile, the arrangement of a water drip ensures that water can be rapidly discharged, water accumulation is avoided, in addition, the cabinet door is fixed through a lock catch and a hinge, the sealing performance and safety of the overall structure are enhanced, and the service life of the distribution box is prolonged. And internal elements are prevented from being influenced by the external environment.

The utility model relates to the technical field of water conservancy projects, and discloses a water conservancy project ecological protection slope which comprises a slope body, a cavity is formed in the lower end of the slope body, a through groove is formed in the front end of the slope body, the bottom of the through groove is communicated with the interior of the cavity, a first nylon net is laid on the slope of the slope body, and a second nylon net is laid on the slope of the slope body. And a quartz sand layer is laid on the surface of the first nylon net. Due to the arrangement of the first nylon net, the quartz sand layer, the soil layer and the like, when rainwater or grass plants planted on the slope protection are manually irrigated, a water source is filtered through the cooperation of the soil layer, the second nylon net, the quartz sand layer, the first nylon net and the filter plate and then is reserved in the cavity in the lower end of the slope body, loss of the water source can be reduced, and the service life of the slope is prolonged. And through the arrangement of the water pumping assembly, a water source for irrigation can be reused conveniently, the water source is further saved, and meanwhile manpower is also reduced.

The invention discloses a lightweight VC vapor chamber which comprises an upper cover shell, a lower cover shell and a capillary structure, the capillary structure is a nylon net and is arranged between the upper cover shell and the lower cover shell, and working water is quantitatively instilled on the capillary structure. The opposite edges of the upper cover shell and the lower cover shell are provided with sealing double-faced adhesive tape used for vacuum sealing connection, the upper cover shell and the lower cover shell are combined through the sealing double-faced adhesive tape to form a closed flat structure, a vacuum cavity is formed in the closed flat structure, and the capillary structure and the working water liquid are located in the vacuum cavity. Compared with a traditional vapor chamber, a pipe inserting opening / a water filling opening is omitted, the sealing double-faced adhesive tape is pressed and sealed in a vacuum environment, the production process is simplified, equipment investment and labor hour consumption are reduced, the production efficiency is improved, the nylon net serves as a capillary structure, circulation of working water can be effectively achieved, and it is ensured that a product has the stable heat conduction performance; and the nylon net is low in weight and cost, the lightweight requirement of products is met, and the production cost is reduced.

The utility model discloses a corona machine high-pressure gas filtering device, which relates to the technical field of filtering devices and comprises a corona back roller, a protective cover covers the outer side of the corona back roller, a high-pressure electrode is fixedly connected to the top end in the protective cover, a high-pressure tuyere is fixedly connected to one side of the protective cover, and the high-pressure tuyere is fixedly connected to the other side of the protective cover. A high-pressure air pump is fixedly connected to one side of the high-pressure air nozzle, a filter box is fixedly connected to one end of the high-pressure air pump, activated carbon, a nylon net and non-woven fabric are fixedly connected to the interior of the filter box, a metal filter net is installed on the front side of the filter box, a material receiving box is fixedly connected to the bottom of the front side of the filter box, and a cleaning plate is arranged on the rear side of a moving plate. According to the high-pressure gas filtering device of the corona machine, the cleaning plate moves and wipes on the surface of the metal filter screen, dust on the surface of the metal filter screen is cleaned, the dust is pushed to the discharging position, dust collection is facilitated, and meanwhile activated carbon, a nylon net and non-woven fabric can be detached and replaced conveniently.

The utility model discloses a high strength coalescence filter element relates to coalescence filter element technical field, including coalescence filter element body, coalescence filter element body includes from inside to outside in proper order inner skeleton net, foldable coalescence layer and nylon net cover, nylon net cover is provided with a plurality of hot melt rubber ring that wrap coalescence layer outer surface and along filter element length direction interval arrangement. According to the utility model, the plurality of hot melt adhesive rings which are arranged at intervals along the length direction of the filter element are heated, so that the hot melt adhesive is melted and enters the foldable coalescence layer, and then the filter element is cooled, so that the coalescence layer with the hot melt adhesive is solidified, a plurality of supports are arranged in gaps of the coalescence layer along the length direction of the filter element, and the internal strength of the coalescence filter element is improved; and gaps in the coalescence layer are forced to open, so that the gaps in the coalescence layer are not easy to change in the ventilation process, and the filtering efficiency is indirectly improved.

The utility model discloses a purification device for precious metal platinum recovery in the technical field of platinum recovery, which comprises a support table, a blanking mechanism and a pushing mechanism arranged above the support table, a quartz beaker arranged on the left side of the support table, a second rubber base plate arranged at the rear end of the quartz beaker, and a motor body mounted at the rear end of the second rubber base plate. A connecting plate is fixedly mounted on the outer wall of the motor body, telescopic rods are fixedly mounted at the left end and the right end of the connecting plate correspondingly, and the purifying device for precious metal platinum recovery is composed of a supporting table, a discharging mechanism and a pushing mechanism. According to the device, core assemblies such as clamping and overturning of the quartz beaker, precise liquid injection of the electric control valve, solid-liquid separation of the nylon net body, automatic pushing of the gas rod body and high-temperature smelting of the fire-jet head are modularly integrated, so that full-process automatic continuous operation of acid leaching impurity removal, waste liquid recovery, washing and drying and smelting purification is realized; the problem of low efficiency of multi-container step-by-step operation in the traditional process is effectively solved, the operation safety is improved, and the precious metal loss rate is reduced.

The utility model relates to a windproof breathable car cover. The vehicle cover is composed of a plurality of cover forming pieces, a front stabilizing assembly, a rear stabilizing assembly, a front elastic assembly and a rear elastic assembly. The overclothes composition pieces comprise an overclothes top piece, a right side piece, a left front piece and a left rear piece and cooperatively wrap a vehicle, the right side piece and the left rear piece are provided with ventilation positions, ventilation holes, high-strength nylon mesh cloth and waterproof and breathable ventilation opening covering cloth, and ventilation, heat dissipation and waterproofness are guaranteed. Invisible zipper ear caps are arranged on the right side piece and the left front piece and can adapt to the positions of rearview mirrors of different vehicle types. The front stabilizing assembly and the rear stabilizing assembly are connected in a three-point mode through adjustable braid inserting buckles, and the vehicle cover is stabilized. The length of the car cover can be flexibly adjusted through telescopic adjusting braid inserting buckles of the front elastic assembly and the rear elastic assembly. The car cover effectively solves the problems of wind resistance, ventilation, universality and size adjustment of an existing car cover, and is widely suitable for outdoor parking, severe weather, long-term parking, night parking and other scenes.

The invention belongs to the technical field of marine biomechanical measurement, and particularly discloses a sea urchin adsorption force accurate measurement device and method, the device comprises a workbench and a first base, a second base and a third base on the workbench, and each base is provided with a power system, an S-shaped external test head and a fixed pulley; the S-shaped external testing head is connected with the digital display pull and push dynamometer and the computer, one end of the S-shaped external testing head is connected with the power system, and the other end is connected with the sea urchin adsorption system through the fixed pulley; the sea urchin adsorption system comprises a high-transmittance glass jar filled with seawater, an L-shaped transparent acrylic plate fixed on the inner wall of the jar and a nylon net bag used for containing sea urchin, and an image collector is arranged at the bottom of the high-transmittance glass jar. The power system is used for providing constant tension, and the sea urchin adsorption system and the data processing system are combined, so that the accurate quantitative measurement of the sea urchin adsorption force is realized. The device adopts a standardized test environment and automatic data acquisition, reduces man-made interference, and reduces mechanical damage to sea urchins.

The utility model provides multifunctional safety glass which comprises a first anti-explosion glass layer, a first nylon net coating layer, a stainless steel composite adhesive tape, a low-radiation coated glass layer and a high borosilicate fireproof glass layer, a first anti-explosion film layer is pressed at the right end of the first anti-explosion glass layer, a second anti-explosion glass layer is pressed at the right end of the first anti-explosion film layer, and a second anti-explosion film layer is pressed at the right end of the second anti-explosion glass layer. A second explosion-proof glass layer is laminated at the right end of the first explosion-proof glass layer, a second explosion-proof film layer is laminated at the right end of the second explosion-proof glass layer, a third explosion-proof glass layer is laminated at the right end of the second explosion-proof film layer, a low-emissivity coated glass layer is positioned on the right side of the third explosion-proof glass layer, and a high borosilicate fireproof glass layer is positioned on the right side of the low-emissivity coated glass layer. In order to solve the problem that the existing safety glass has no bulletproof, fireproof, ultraviolet-proof and sound-proof functions, the novel safety glass structure with the bulletproof, fireproof, ultraviolet-proof and sound-proof functions is designed, and the functionality of the safety glass can be improved.

This invention relates to a wearable, integrated, self-powered pressure sensing device based on a flexible zinc-sodium hybrid battery and its fabrication method. The device includes an integrated sensor and a signal processing unit. The integrated sensor comprises a sensing layer, a shared positive electrode layer, and a battery layer arranged sequentially from top to bottom. The signal processing unit is connected to the sensing layer, the shared positive electrode layer, and the battery layer. This invention effectively overcomes the challenges of baseline instability and mechanical failure of flexible devices in complex environments by leveraging the sensitivity enhancement effect of MXene nanosheets, the zero-drift control technology of nylon mesh, and the low-temperature antifreeze mechanism of ethylene glycol (EG). This invention opens up a key path from "modification of basic electrochemical materials" to "portable terminal system applications," truly realizing portable, wide-temperature-range, and long-life in-situ online monitoring of human physiological signals, providing a new design paradigm for the engineering implementation of next-generation high-performance, low-power wearable sensing systems.

The utility model provides a long-stroke servo punch, and relates to the technical field of long-stroke servo punches, including: a punch body, a side of the punch body is provided with a protective mechanism, the protective mechanism includes a baffle plate 1, a foam layer 1 is sleeved inside the baffle plate 1, the foam layer 1 is slidably connected to the baffle plate 1, a nylon mesh layer is fixedly connected to one side of the foam layer 1, and a foam layer 2 is fixedly connected to the side of the nylon mesh layer away from the foam layer 1. The utility model, by setting the protective mechanism, enables the long-stroke servo punch to squeeze and burst the mold used in conjunction with it in time when punching parts, and will not cause harm to the operator, and the broken mold is blocked by the baffle plate 1 and the baffle plate 2, wherein smaller mold fragments can be blocked and recovered by the foam layer 1, the nylon mesh layer and the foam layer 2, so as to avoid small mold fragments from splashing everywhere.

The utility model discloses a protective support and public building construction device, including the support assembly, the support assembly includes shell, one side outer wall of shell is welded with the support plate, and both sides outer wall of the support plate is welded with a plurality of spacer pins, the support assembly is internally provided with the partition assembly, the partition assembly includes rolling shaft tube, support frame, rolling shaft tube, the support frame, rolling shaft tube, rolling shaft tube, rolling shaft tube, rolling shaft tube, rolling shaft tube, rolling shaft tube, rolling shaft tube, rolling shaft tube, rolling shaft tube, rolling shaft tube and rolling shaft tube. The supporting frame is installed in the center of the top end of the shell through a bolt. The top end of the winding shaft pipe is installed on the supporting frame through a bearing. When a construction site is protected and isolated, the nylon net can be fixed to the other support assembly through matching of the rubber blocks and the limiting pins, the nylon net unfolded in the process has the large length, the purpose of protecting and isolating the large-area public building construction site can be achieved, meanwhile, the mesh diameter of the nylon net is small, and the service life of the nylon net is prolonged. Short people such as children can be prevented from penetrating through the protective support, broken stones and the like generated during construction are prevented from splashing out of a construction site, and the protective capacity for the construction site is greatly improved.

A method for fast closure of embankment breach based on rocket anchors and steel pipe piles, the steps are: step 1, quickly throw a large nylon net to build a wrap; step 2, construct an entry body based on a geotextile bag, and at the same time, determine the timing and parameters of closure according to the hydraulic conditions of the embankment breach, the riverbed section, and the soil quality; step 3, prepare the personnel, materials and equipment required for closure; step 4, use rocket anchors, pile planting technology and water-filled rubber bags, steel mesh gabions, stones, and soil materials to complete the closure of the embankment breach. The present invention utilizes the characteristics of fast construction and high stability of rocket anchors and pile planting technology, first launches a rocket anchor at the breach, and provides anchoring force for the water-filled rubber bag through the rocket anchor cable, increases the impact resistance of the water-filled rubber bag in the water flow, and implants a steel pipe pile on the back water side of the water-filled rubber bag to further stabilize the water-blocking body, and then relies on the completed water-blocking body to throw steel mesh gabions, stones, and soil materials to achieve fast closure of the embankment breach, with significant social and economic benefits.

The present application relates to the field of environmental analysis, in particular to a forest litter decomposition rate estimation method, system, device and storage medium. The present application aims at the problems of long cycle, great environmental influence, time-consuming and laborious of the existing nylon mesh bag method for determining the forest litter decomposition rate, and the problem of being unable to carry out decomposition research on large-scale forests, and provides a forest litter decomposition rate estimation method, system, device and storage medium, measures and calculates the current year input of the forest litter p and the annual input increment, determines the residual rate constant r of the forest litter through experimental method or searching for relevant data in the past, and combines the residual rate constant r with the OLson single index decomposition model of the forest litter to establish a solution equation of the forest litter decomposition rate. This method has short cycle, does not need to be measured in the field regularly and frequently, has small environmental influence, the parameters and variables in the equation are easy to obtain, time and labor are saved, and decomposition rate research can be carried out on large-scale forests.

The utility model discloses a waterproof breathable composite TPU film which comprises a TPU film base layer, an upper supporting layer and a lower supporting layer are arranged at the bottom of the TPU film base layer, a heat preservation layer, a nylon net layer and a corrugated film layer are arranged above the TPU film base layer, a reinforcing assembly is arranged between the upper supporting layer and the lower supporting layer, and the upper supporting layer is connected with the lower supporting layer. A plurality of waterproof isolation holes are formed in the TPU film base layer, flow guide grooves are formed between the adjacent waterproof isolation holes, and the waterproof isolation holes are filled with waterproof agent layers. The TPU composite film is scientific and reasonable in structural design, the TPU composite film structure formed by compositing the TPU film base layer, the upper supporting layer, the lower supporting layer, the heat preservation layer, the nylon net layer and the corrugated film layer is arranged, the strength of the TPU film is effectively improved, and the good tear-resistant effect is achieved.

A kind of polyvinylidene fluoride and poly (methyl methacrylate) gradient composite fiber membrane and its preparation method and application, poly (methyl methacrylate) and polyvinylidene fluoride are respectively dissolved in the mixed solution of N, N dimethylformamide and methyl acetate, oil bath stirring, obtain homogeneous transparent spinning solution;The above two kinds of spinning solution are added in needle tube respectively, fixed on microfluidic spinning advance pump, connect infusion hose;Temperature and humidity in spinning bin are controlled, install nylon net on receiver to carry out gradient composite fiber membrane collection, by microfluidic control system, polyvinylidene fluoride and poly (methyl methacrylate) spinning solution pumping is carried out at different change rate, open air valve, and carry out spinning;Gradient composite fiber membrane is taken off from nylon net, and dried to obtain two-component air-blowing poly (methyl methacrylate) and polyvinylidene fluoride gradient composite membrane.

The utility model relates to electronic equipment technical field, especially a kind of sound production device and earphone. The sound production device includes shell, nylon net and silica gel net, the shell is provided with sound production hole, installation cavity is formed at the sound production hole;The nylon net is clamped in the installation cavity, and the nylon net completely covers the sound production hole;The silica gel net is set to the side of the nylon net away from the sound production hole, the silica gel net is clamped in the installation cavity, and the silica gel net completely covers the nylon net. The earphone includes the sound production device described above. The earphone of the above-mentioned sound production device can effectively prevent dirt from entering the sound production hole of the earphone, which is beneficial to ensure the cleanliness of the sound production hole of the earphone and prolong the service life of the earphone.

The invention provides a sample cell for radioactive liquid scintillation analysis. The sample cell comprises a sample cell body, a liquid outlet, a liquid inlet, a transparent window and a sample cell cover. The inner wall of the sample cell is provided with a nylon gauze, the nylon gauze is tightly attached to the inner wall of the sample cell, and the nylon gauze is 200-300 meshes. A liquid inlet and a liquid outlet are symmetrically formed in the outer wall of the sample pool, the liquid inlet and the liquid outlet are communicated with the interior of the sample pool, and radioactive liquid can enter the sample pool through the liquid inlet and flow out of the liquid outlet after passing through the interior of the sample pool. The transparent windows are arranged on the two sides of the sample cell, and rubber sealing rings are arranged between the transparent windows and the sample cell; and a sample cell cover is arranged outside the transparent window. The sample pool is filled with solid plastic scintillation particles, and the particle size of the solid plastic scintillation particles is 1-1000 microns; radioactive liquid flows in from the liquid inlet and is mixed with the solid plastic scintillation particles to excite the solid plastic scintillation particles to generate optical signals, and the optical signals are sent out through the transparent window. The scintillation material is plastic scintillation particles, and the chemical property is more stable.

The utility model discloses a novel anti-fake laser film which comprises a base material layer, an aluminum plating layer is fixedly arranged on the lower surface of the base material layer, an adhesive layer is fixedly arranged on the lower surface of the aluminum plating layer, and a release layer is arranged on the lower surface of the adhesive layer. A nylon net positioning layer is fixedly arranged on the upper surface of the base material layer, an aerogel heat insulation layer is fixedly arranged on the upper surface of the nylon net positioning layer, a plastic net positioning layer is fixedly arranged on the upper surface of the aerogel heat insulation layer, and a shading layer is fixedly arranged on the upper surface of the plastic net positioning layer. A holographic pattern anti-counterfeiting layer is fixedly arranged on the upper surface of the shading layer, a photosensitive color-changing coating is fixedly arranged on the upper surface of the holographic pattern anti-counterfeiting layer, and a transparent wear-resistant surface layer is fixedly arranged on the upper surface of the photosensitive color-changing coating. According to the technical scheme, the structural design is reasonable, the anti-fake effect is good, the shading effect is good, the heat insulation effect is good, and practicability is good.

The present invention relates to the field of papermaking technology, and more specifically, to automatic feeding equipment for a papermaking machine, comprising a belt conveyor composed of a nylon mesh conveyor belt and a fixed portion, wherein a pulp filtering area is provided at the upper end of the belt conveyor, and a calendering area is provided at the right end of the belt conveyor. The present invention provides an automatic feeding equipment for a papermaking machine, which, by varying the distance between adjustment plates, changes the width of the subsequent pulp laid on the nylon mesh conveyor belt. This allows pulp fibers of varying widths to be obtained after filtration, effectively controlling the width of subsequently generated paper, meeting the requirements for producing paper of varying sizes during the papermaking process, flexibly adapting to the production of different types of paper, and increasing the practicality of the equipment.

The utility model relates to the field of dyeing devices, and discloses a dyeing device of a cotton thread chinlon net, which comprises a box body, the outer side of the box body is fixedly connected with a fixing plate, the outer side of the fixing plate is rotatably connected with two rotating wheels I, the peripheries of the two rotating wheels I are sleeved with a belt I, the outer sides of the rotating wheels I are fixedly connected with a motor, and the motor is fixedly connected with a belt II. Wherein one first rotating wheel is fixedly connected to the output end of the motor, a fixing clamp is fixedly connected to the outer side of the first belt, a second rotating wheel is rotationally connected to the outer side of the fixing plate, the periphery of the second rotating wheel is sleeved with a second belt, and the second belt is fixedly connected to the middle of the fixing clamp. According to the deep cleaning device, the first belt and the second belt are fixed through the fixing clamp, when the first rotating wheel moves, the second belt is driven to move, the second belt is fixed to the connecting plate, the other end of the connecting plate is fixed to the water sprayer, and therefore the water sprayer moves up and down along with the second belt when the motor operates, and the deep cleaning effect is achieved.

The utility model provides a high interception rate nylon filter material, including a first nylon net, a second nylon net and a support layer, the support layer is fixedly connected to the second nylon net, the first nylon net and the second nylon net are compounded by pressing, the first nylon net includes radial monofilaments and axial monofilaments, the radial monofilaments and the axial monofilaments are woven perpendicularly to each other, the second nylon net includes a first filter ring and a second filter ring, the first filter ring and the second filter ring are interlocked in the same row. This solution arranges a second nylon net interlocked with the first filter ring and the second filter ring between the first nylon net and the support layer, so that larger particles remain on the side of the first nylon net away from the second nylon net, and smaller gel particles are retained in the first filter ring and the second filter ring, thereby achieving the purpose of improving the interception efficiency of the nylon filter material and preventing clogging.