22results about How to "Reduce through" patented technology

The invention belongs to the technical field of PET (polyethylene terephthalate) film materials, and particularly discloses a PET heat-sealing film for blocking infrared rays and ultraviolet rays as well as a preparation method and application of the PET heat-sealing film. The PET heat-sealing film provided by the invention is of a multi-layer film structure and comprises a near-infrared and ultraviolet absorption layer, a transparent layer and a heat-sealing layer, wherein the near-infrared absorption layer and the ultraviolet absorption layer have an absorption effect on near-infrared rays and ultraviolet rays, so that the transmission of invisible light can be reduced, and the blocking effect of the film on radiation can be improved; the transparent layer takes optical-grade transparent PET as a preparation raw material, so that the transparency of the film can be improved, the stiffness of the film can be increased, and the winding effect can be improved; the heat sealing layer can endow the film with self-adhesion, so that the film can be directly compounded with glass at a high temperature, and the use of an adhesive is avoided. In addition, the preparation process of the PET heat-sealing film is simple, the operability is high, industrial production is easy to perform, and the PET heat-sealing film has good application prospects and high economic value.

The invention relates to the technical field of building wall bodies, in particular to a medical anti-radiation wall body structure and a construction method.The medical anti-radiation wall body structure comprises an outer wall body, a plurality of first filling plates, a plurality of second filling plates and compensation parts; ensuring that the plurality of first filling plates are positioned on the same vertical plane and the plurality of second filling plates are positioned on a second vertical plane, and adjusting transverse gaps generated by the first filling plates and the second filling plates to be not corresponding; furthermore, the gaps of the first filling plates and the second filling plates in the vertical direction are compensated through the first compensation units, the gaps of the first filling plates and the second filling plates in the horizontal direction are compensated through the second compensation units, the gaps among the multiple first filling plates are reduced, and meanwhile the gaps among the multiple second filling plates are reduced; therefore, the anti-radiation capability of the anti-radiation wall is improved, and the probability that radiation particles penetrate through the anti-radiation wall is reduced.

The utility model provides a structure for improving the uniformity of an aluminum target film, which comprises an aluminum target material and a back plate welded with the aluminum target material, and the thickness of the central area of the aluminum target material is larger than that of the edge area of the aluminum target material. The structure reduces penetration of magnetic lines of force in the central area of the target material and reduces the surface magnetic field intensity of the central area of the target material, so that the uniformity of the aluminum target film is effectively improved.

The invention discloses a sun-proof laminated glass for vehicle windows and a preparation method thereof, and relates to the technical field of glass. The invention uses 4-methoxycinnamic acid, 2-hydroxy-5-(2-hydroxyethyl) benzaldehyde, and a compound synthesized by p-aminobenzoic acid to be intercalated in magnesium-aluminum hydrotalcite, introduces a cinnamate structure and a Schiff base structure between the layers, combines the ultraviolet shielding effect of the hydrotalcite, effectively absorbs ultraviolet light, and preliminarily realizes the ultraviolet blocking performance of the laminated glass; then, the hydrotalcite is further modified by KH151, and then polymerized with acrylic acid, acrylamide, and chitosan to form a self-adhesive hydrogel, bond the glass, and form a sandwich structure, and then, titanium dioxide, silicon dioxide, and antimony tin oxide film layers are sequentially sputtered and deposited on the surface of the laminated glass to form a three-layer composite film layer, construct a sunlight filtering system, reduce ultraviolet and infrared light transmission, and greatly reflect heat rays to form a heat insulation structure.

The invention relates to a stable and reliable food processor which comprises a permanent magnet direct current brushless motor, the motor comprises a stator and a rotor, the rotor comprises a rotor iron core and a permanent magnet, the inner side of the outer edge of the rotor iron core is provided with an installation groove for the permanent magnet to be inserted, and the position, opposite to the permanent magnet, of the outer edge of the rotor iron core is provided with a rotor salient pole protruding outwards. A groove is formed between every two adjacent rotor salient poles, the rotor further comprises a fixing cage which is arranged outside the rotor iron core and integrally formed, the fixing cage comprises end plates located at the two ends of the rotor iron core and fixing columns located on the outer side wall of the rotor iron core and connected with the end plates at the two ends, the fixing columns are located at the grooves, and the outer diameter of the fixing columns is not larger than that of the rotor salient poles. The fixing cage is provided with the fixing columns at the grooves to integrally wrap the rotor, the strength of the fixing cage is increased, the rotor iron core and the permanent magnets are fixed and limited, and the situation that the strength of the fixing cage is affected due to the fact that the periphery bears large centrifugal force when the fixing cage is fixedly connected only through the connecting column in the center and deforms is avoided.

This application relates to an explosion-proof door with good locking effect, comprising a door panel and a door frame. A rotating ring of the door panel is connected to the door frame. A cavity is formed inside the door panel, and a locking assembly is disposed within the cavity. The locking assembly includes four push rods, four connecting rods, a screw, and a rotating sleeve. The four push rods correspond to the four side walls of the door panel and slide along the direction close to or away from the inner side wall of the cavity. The screw is rotatably connected to the cavity, and the rotating sleeve is threadedly connected to the screw. The four connecting rods correspond to the four push rods, with one end rotatably connected to the push rod and the other end rotatably connected to the rotating sleeve. A limiting post is provided on the push rod for passing through the door panel, and a limiting groove is formed on the door frame for engaging the limiting post. When the door panel is locked, the connecting rod and the rotating sleeve are located in the same plane. This application improves the locking effect of the explosion-proof door.

The utility model discloses a catalytic silencer heat shield assembly which comprises a hanging bracket assembly, an upper heat shield support assembly, a side heat shield, a rear heat shield, a lower support assembly and an upper support assembly. The number of the hanging bracket assemblies is two, the hanging bracket assemblies are assembled on the side face of the frame, and the two hanging bracket assemblies are located in front of and behind the catalytic silencer correspondingly and used for hanging the catalytic silencer. The two ends of the upper heat shield support assembly are each connected with a hanging bracket assembly. The side heat shield is connected with the upper heat shield bracket assembly; the rear heat shield is connected with the lower bracket assembly and the upper bracket assembly; the upper bracket assembly is connected with the side heat insulation cover; and the lower bracket assembly is connected with the catalytic silencer.

The utility model relates to a photovoltaic assembly. The photovoltaic module comprises a solar cell layer; the quantum cutting adhesive film is located on the surface of the light receiving side of the solar cell layer; the ultraviolet cut-off layer covers the surface of the side, away from the solar cell layer, of the quantum cut adhesive film, and the ultraviolet light transmittance of the ultraviolet cut-off layer is 50%-90%. The photovoltaic module provided by the utility model can improve the conversion and utilization rate of ultraviolet light, solves the problem of light attenuation of the solar cell, utilizes the ultraviolet light as much as possible, and further improves the efficiency of the photovoltaic module.

The invention relates to the technical field of ventilation equipment, and discloses workshop ventilation equipment for floccule treatment, which comprises two sets of ventilation cylinder frames, one ventilation cylinder frame is used for air intake, the other ventilation cylinder frame is used for air exhaust, and each ventilation cylinder frame comprises a collection box used for collecting fluff; the connecting pipe body is connected to one end of the collecting box and is used for transferring fluff; the driving source is mounted in the connecting pipe body and is used for driving the gas to move; wherein a collecting unit is installed in the collecting box, and the collecting unit comprises a filter screen layer used for filtering. According to the fluff collecting device, in the process of collecting fluff and outwards conveying gas through the collecting assembly and in the process of rotating the driving shaft, the fluff moves outwards along the filter screen layer and is pushed into the collecting assembly, collecting is achieved, the gas is continuously filtered to move outwards, the effect of avoiding blocking is achieved, and fluff collecting is also achieved.

The present invention relates to the technical field of building walls, and in particular to a medical radiation protection wall structure and a construction method, wherein the medical radiation protection wall structure comprises an outer wall, a plurality of first filling plates, a plurality of second filling plates and a compensation member, and by adjusting the first filling plates and the second filling plates, it is ensured that the plurality of first filling plates are in the same vertical plane, the plurality of second filling plates are in the second vertical plane, and the horizontal gaps generated by the first filling plates and the second filling plates are adjusted to be non-corresponding; further, the gaps between the first filling plates and the second filling plates in the vertical direction are compensated by a first compensation unit, and the gaps between the first filling plates and the second filling plates in the horizontal direction are compensated by a second compensation unit, so as to reduce the gaps between the plurality of first filling plates, and at the same time reduce the gaps between the plurality of second filling plates, thereby improving the radiation protection capability of the radiation protection wall and reducing the probability of radiation particles passing through the radiation protection wall.

The utility model discloses an air blowing device for a fruit sorting machine, which comprises a connecting frame, air cylinders are arranged at the upper end and the lower end of the left side of the connecting frame, square air blowing nozzles are arranged on the front sides of the air cylinders, air inlets are arranged on the rear sides of the air cylinders, and adjusting mechanisms are arranged in the square air blowing nozzles. The adjusting mechanism is used for adjusting the air flow guiding-out size of the square air blowing nozzle. The adjusting mechanism comprises a fixing plate fixedly connected to the front side of the interior of the square blowing nozzle. According to the air blowing device for the fruit sorting machine, air guided out of the square air blowing nozzle is shunted through the multiple sets of through holes, the impact force of overall air blowing is reduced, the skin of soft-skin fruits is prevented from being damaged, meanwhile, a rotary knob is rotated to drive a lead screw to drive a connecting ring to be linked with a partition plate to block the through holes, air flow passing is reduced, and the service life of the fruits is prolonged. And the air blowing intensity is changed, the air flow is adjusted, and the air blowing device is suitable for air blowing on the surfaces of fruits of different sizes.

The invention discloses a four-in-one explosion-proof gas sensor, and relates to the field of gas sensors, the four-in-one explosion-proof gas sensor comprises a sensor shell, a sensor module is installed in the sensor shell, four gas sensors are installed in the sensor module, and a gas circulation hole is formed in the sensor shell; a filtering mechanism corresponding to the gas circulation hole is arranged in the sensor shell, and a dehumidifying mechanism corresponding to the gas circulation hole is arranged in the sensor shell. When outside air enters the sensor shell from the gas circulation hole of the sensor shell, the air passes through the filtering mechanism, the filtering mechanism blocks dust floating flocks and the like carried in the air, and then the air passes through the dehumidifying mechanism and finally is in contact with the sensor module in the sensor shell. Therefore, the possibility that the dust floating wadding entrained in the air enters the sensor shell and is directly attached to the surface of the sensor module to influence the normal work of the sensor module can be reduced.

The invention provides an optical system based on an OLEDoS display chip, and the system comprises a plurality of lenses which comprise a fourth lens to a first lens which are sequentially arranged from the image source side to the human eye observation side of the optical system, and each lens is provided with a first side surface facing the human eye observation side and a second side surface facing the image source side; the polarization control assembly comprises a first composite membrane and a second composite membrane, the first composite membrane is arranged on the first lens or the second lens, the second composite membrane is arranged on the first side face of the third lens, and the polarization control assembly is used for controlling the polarization direction of light; the light splitting film is arranged on the second side face of the second lens, and the light splitting film is used for transmitting at least one part of the light rays and reflecting at least the other part of the light rays; and the display assembly comprises an OLEDoS display screen. According to the invention, the problem that high resolution and low ghost image of an optical system based on an OLEDoS display chip in the prior art are difficult to consider at the same time is solved.

The invention discloses a preparation method of a biodegradable polyvinyl alcohol resin packaging material, and relates to the technical field of packaging materials, and the preparation method comprises the following preparation steps: step 1, adding 100-150g of polyvinyl alcohol into 500-1000g of deionized water, heating to 60-70 DEG C, and stirring for 10-30 minutes; 2, under the stirring condition, 2.5 g to 6 g of modified chitosan, 1.5 g to 2.5 g of a deoxidizing agent, 5 g to 8 g of nanofiller and 2 g to 6 g of modified microcrystalline cellulose are sequentially added, and the materials are mixed to be uniform; and step 3, adding the mixture into a double-screw extruder, melting, kneading and extruding to obtain the polyvinyl alcohol resin packaging material. According to the preparation method of the biodegradable polyvinyl alcohol resin packaging material, chitosan is modified, so that the chitosan is better dispersed in a resin matrix and prevented from being agglomerated, and the performance of the material is more uniform; the reaction activity on a molecular chain of the modified chitosan is enhanced, the interaction between the modified chitosan and the polyvinyl alcohol resin is enhanced, and the compatibility and mechanical properties of the material are improved.

The utility model discloses a portable detector for heavy metal content of agricultural products, including detector body, is set up with the window on the detector body, the window top is provided with the cover of size matching, the inside installation of detector body has the light source and light source detector, the inside of detector body is placed with the colorimetric cup, the colorimetric cup is centrally arranged between the light source and light source detector. A kind of portable detector for heavy metal content of agricultural products of the utility model, in the process of detecting heavy metal content of agricultural products, through the cooperation of installation component, driving assembly, rotating assembly and knocking component, not only make the impurities suspended in sample solution surface in colorimetric cup settle, improve the precision of heavy metal content detection result, also eliminate the hidden trouble of fingerprint and liquid residue that manual shaking colorimetric cup can bring, reduce its influence on the transmission and scattering of light, reduce measurement error.

The utility model relates to the technical field of explosion-proof glass, in particular to a halogen-free flame-retardant ultraviolet-proof EVA (Ethylene Vinyl Acetate) adhesive film and explosion-proof glass applying the same, the EVA adhesive film comprises a composite adhesive layer I, a transparent rubber layer I, an ultraviolet absorption layer I, a flame-retardant enhancement layer, an ultraviolet absorption layer II, a transparent rubber layer II and a composite adhesive layer II which are sequentially adhered; transmission of ultraviolet light in external light can be reduced, and the concentration of the ultraviolet light is reduced; an efficient flame-retardant effect can be achieved in a fire disaster, and toxic and harmful gas is not released; structures such as raised plastic balls which easily cause generation of gaps are not adopted, so that the overall strength of the EVA adhesive film can be improved, and the situation that the flame-retardant effect is weakened due to air stored in the film can be avoided; according to the explosion-proof glass applying the EVA adhesive film, after the glass is impacted by external force, fragments are adhered by the adhesive film and are prevented from splashing down to hurt visitors and exhibition cultural relics, and meanwhile, the explosion-proof glass can play ultraviolet-proof and good flame-retardant roles.

The invention discloses sunscreen laminated glass for a car window, and relates to the technical field of glass. A compound synthesized from 4-methoxycinnamic acid, 2-hydroxy-5-(2-ethoxyl) benzaldehyde and para aminobenzoic acid is intercalated into magnesium-aluminum hydrotalcite, a cinnamate structure and a Schiff base structure are introduced between layers of the magnesium-aluminum hydrotalcite, and ultraviolet light is effectively absorbed by combining the ultraviolet shielding effect of the hydrotalcite, so that the ultraviolet barrier property of the laminated glass is preliminarily realized; the preparation method comprises the following steps: preparing hydrotalcite, further modifying the hydrotalcite by using KH151, polymerizing with acrylic acid, acrylamide and chitosan to form self-adhesive hydrogel, bonding glass and forming a sandwich structure, sequentially sputtering and depositing a titanium dioxide film, a silicon dioxide film and a tin antimony oxide film on the surface of the sandwich glass to form a three-layer composite film, and constructing a sunlight filtering system. Transmission of ultraviolet light and infrared light is reduced, heat rays are greatly reflected, and a heat insulation structure is formed.

The intelligent laser cutting system for bar machining comprises a machine base, a vertical frame is arranged above the machine base, a pneumatic clamping jaw is arranged on the other side of the upper portion of a fixing base, a protective cover is arranged above the machine base, an air cylinder is arranged on the rear side of the machine base, a front cover plate is arranged on the front side of the protective cover, and an air cylinder is arranged on the rear side of the protective cover. An observation window is arranged on the surface of the opening and closing window and is made of fused quartz glass. The laser cutting device is provided with the protective cover and the front cover plate, the laser cutter is located in the protective cover when cutting a bar body, the design of the protective cover effectively reduces harm to operators caused by splashes, laser radiation and the like generated in the laser cutting process, and the observation window arranged on the front side of the front cover plate is made of fused quartz glass; the fused quartz glass observation window has good light transmission and laser attenuation characteristics, it can be guaranteed that an operator clearly observes the cutting process, transmission of laser beams can be effectively weakened, and safety is further enhanced.

The utility model relates to a tray lifting conveyor high in positioning detection precision, and belongs to the technical field of tray conveying, the tray lifting conveyor comprises two brackets arranged in parallel in the horizontal direction, lifting mechanisms are arranged on the sides, away from each other, of the two brackets, and carrier rollers are rotationally arranged on the brackets; a driving mechanism used for driving the carrier rollers to rotate is arranged on the brackets, a first light curtain sensor emitting part is arranged at the feeding end of one bracket, a first light curtain sensor receiving part is arranged at the feeding end of the other bracket, and the first light curtain sensor receiving part and the first light curtain sensor emitting part are oppositely arranged. According to the invention, the positioning detection precision of the tray can be improved; the use safety is relatively high, and the application value is good.

The utility model discloses an electroplating bath impurity removal device for roller production in the technical field of electroplating baths, which comprises a box body of an electroplating bath, a drain pipe for discharging electroplating liquid is mounted on one side of the box body, and a blow-off pipe for discharging impurities is mounted on the other side of the box body. A filtering part used for blocking impurities in the electroplating solution is installed on the inner side of the box body, a driving part used for driving the filtering part to move is installed on the inner side of the box body, the filtering part can conduct impurity removal and purification on the electroplating solution, and the driving part can drive the filtering part to conduct reciprocating motion in the box body; impurities in the electroplating solution are blocked and filtered by the filtering piece and then discharged through the blow-off pipe, and the filtering piece and the driving piece are disassembled or assembled through the locking piece so that the filtering piece can be replaced conveniently or the filtering piece can be selectively installed according to needs.

The utility model is applicable to the technical field of hollow glass, and provides anti-theft sound-insulation hollow glass, which comprises a hollow glass body, the hollow glass body comprises a mounting frame, four glass plates, two PVB (polyvinyl butyral) films and a plurality of sealing strips, the four glass plates are fixedly mounted on the mounting frame, and the two PVB films are fixedly mounted on the mounting frame. The two PVB films are arranged between any two glass plates, and the sealing strip is assembled on the mounting frame; the anti-theft frame is arranged on the mounting frame; the mounting rod is fixedly mounted on the anti-theft frame; the operation block is arranged on the mounting rod in a sliding manner; the anti-theft alarm mechanism is assembled on the mounting frame, the anti-theft alarm mechanism is connected with the operation block, and the anti-theft alarm mechanism is used for anti-theft alarm. The anti-theft sound insulation hollow glass provided by the scheme has good anti-theft and noise reduction effects, and the use safety is effectively improved.