303results about How to "Easy to vent" patented technology

The invention discloses a carbon fiber composite material T-shaped beam structure and an autoclave forming mold and forming method. The carbon fiber composite material T-shaped beam structure comprises a first structure layer, a second structure layer, a third structure layer and a filling structure, and long-term use of the T-shaped beam structure under various complex working conditions is met through reasonable layering design; the autoclave forming mold comprises a mold body and a side sliding block, the section of the mold body is in an L shape, the mold body is provided with a material piece paving face and a mold closing face, the side sliding block is provided with a paving face matched with a second structural layer, and after the mold body and the side sliding block are closed, a double-face mold pressing area of a flange corresponding to the horizontal section of the second structural layer is formed. And an autoclave forming process is combined, and a mode of integral vacuum bag pressing and local double-sided mold pressing is adopted, so that material sheet paving is simple and easy to operate, and a formed product is low in porosity.

According to the diesel engine cylinder block bolt hole core forming method, the bolt hole core manufacturing technology is optimized, so that the bolt hole core molding sand density is increased, the sand mold strength is guaranteed, the problem that the surface quality of a casting is affected due to unsmooth exhaust of a traditional bolt hole core is solved, follow-up cleaning is convenient, and the production efficiency is improved. The sand burning problem of the diesel engine cylinder block bolt hole is effectively solved, the surface smoothness of a casting is good, manual cleaning due to the sand burning problem is not needed, the production cleaning efficiency is improved, the casting quality is ensured, a coating in the bolt hole is easy to shell after shakeout, a bolt is through after shot blasting, the sand burning condition of the bolt hole is greatly improved, and the process guarantee is improved through superposition of multiple schemes; the defects such as sand sticking and air holes of bolt holes are thoroughly overcome, and the surface quality and cleaning efficiency of castings are improved.

The utility model relates to a tread pattern structure of an all-steel truck tubeless radial tire. The tread pattern structure comprises a tire tread, transverse patterns and longitudinal patterns, wherein the transverse patterns and the longitudinal patterns are arranged on the tire tread; the tire tread is composed of ten equal segmented molds, four straight grooves, four S-shaped variable groove bottoms and three pattern blocks are arranged on the tire tread, transverse and longitudinal streamline shallow groove staggered design is arranged on each pattern block, full-arc transition design is adopted for the groove bottoms, and thermometer type heat dissipation shoulder grooves are distributed in the shoulder of the tire. The functional warning effect is achieved while heat dissipation of the shoulders is improved, and diseases caused by the problem that the shoulders generate heat are avoided. Compared with the prior art, the tire adopting the pattern form provided by the utility model has the advantages that the appearance is more beautiful and smoother, the layering sense is realized, the wear resistance is higher, the eccentric wear resistance is higher, and the failure rate is lower.

The utility model provides a pouring system of a shell-shaped shell casting, which comprises a cavity, a straight pouring gate is arranged below the cavity, and a first-layer transverse pouring gate, a second-layer transverse pouring gate and a third-layer transverse pouring gate are arranged outside the cavity; the first-layer transverse pouring gate and the second-layer transverse pouring gate are communicated through a first-layer vertical pouring gate, and the second-layer transverse pouring gate and the third-layer transverse pouring gate are communicated through a second-layer vertical pouring gate; an annular riser is arranged above the cavity, the third-layer transverse pouring gate is communicated with the annular riser through a third vertical pouring gate, and a fourth vertical pouring gate extending upwards along the cavity is further arranged on the third-layer transverse pouring gate; by arranging the multiple layers of transverse pouring gates and vertical pouring gates, it is guaranteed that molten metal can be fully fed while being stably filled, internal deslagging and exhausting are facilitated through cooperation of the annular riser, the defects of looseness, slag inclusion, pinholes, coarse grains and the like existing in an existing casting are effectively overcome through cooperation of chilling block chilling, and the stable casting quality during batch production is guaranteed.

This utility model provides a pile head reinforcement structure for construction in hard rock formations, including a steel sleeve, a grouting structure disposed between the steel sleeve and the outer surface of the pile head, a shear structure for forming a mechanical interlocking effect between the pile head and the steel sleeve, an anchoring structure for reliable connection with the pile body, a pressure-bearing flange disposed at the bottom of the steel sleeve, and a reinforcing rib structure arranged on the outer wall of the steel sleeve. The steel sleeve is fitted around the periphery of the precast pile head, and the grouting structure fills the space between the inner wall of the steel sleeve and the outer surface of the pile head and is fixed to both. This pile head reinforcement structure for construction in hard rock formations solves the problem that, due to the lack of effective structural reinforcement and circumferential restraint measures for precast pile heads in related technologies, pile heads are prone to spalling, crushing, cracking, and other damage under high loads and impact conditions.

The application discloses a forming die of a rubber guide sleeve with a metal framework and a preparation method thereof. The forming die comprises an upper die, a middle die and a lower die. The upper die comprises an upper disc and a cylinder. The cylinder is provided with a positioning hole. The lower surface of the upper disc is provided with a chamfered upper cavity groove. The lower die comprises a lower disc, a circular table and a positioning boss. The upper surface of the circular table is provided with a chamfered lower cavity groove. The middle die is provided with a cavity hole in the center. When the die is closed, the positioning boss of the lower die is inserted into the positioning hole. The positioning boss is provided with a support ring which is provided with a recess forming pin. The outer wall of the cylinder is provided with a metal framework. The chamfered upper cavity groove, the outer wall of the cylinder, the outer side wall of the support ring, the chamfered lower cavity groove and the inner wall of the cavity hole form a forming cavity. After vulcanization of the product is completed, the forming pin is accurately positioned, the square recess around the inner diameter of the metal framework guide sleeve meets the design requirements, the die opening and the product demolding are smooth, the operation is simple, safe and reliable, and the manufacturing cost is low.

This application discloses a positive pressure connector with a rotatable retaining ring, comprising an inner liner, a three-way outer shell, an elastic capsule, and a rotatable retaining ring. The three-way outer shell includes a connecting outer shell and a connecting side tube connected thereto. The two ends of the connecting outer shell are an installation port and a liquid inlet, respectively. The inner liner includes a connecting post and a stop plate. The stop plate is connected to the outside of the connecting post and to the installation port of the connecting outer shell. One end of the connecting post extends into the connecting outer shell and connects to the elastic capsule. An infusion inner hole is formed along the length of the end of the connecting post away from the elastic capsule. A communicating inner hole is formed along the radial direction on the connecting post. The two ends of the communicating inner hole communicate with the infusion inner hole and the inner cavity of the connecting outer shell, respectively. The rotatable retaining ring includes a rotating tube and a rotating ring plate connected to one end of the rotating tube. The rotatable retaining ring is rotatably connected to the connecting post through the rotating ring plate. This application effectively ensures the sealing and reliability of the positive pressure connector after locking the indwelling needle, and reduces the possibility of connector damage.

The utility model discloses an ostomy bag exhaust structure in the technical field of ostomy bags, which comprises a sealing piece used for connecting the ostomy bag exhaust structure to an ostomy bag, a shell of the ostomy bag exhaust structure is arranged on the sealing piece, and a plurality of exhaust holes are formed in the top of the shell. The ostomy bag solves the problems that an existing ostomy bag is complex in exhaust operation and inconvenient to operate by a user, the ostomy bag can not be sealed tightly due to improper operation after exhaust is completed, excrement or urine is prone to leaking out, and the ostomy bag can not be sealed tightly. And a certain degree of influence is caused on the psychology of the user.

The utility model relates to the technical field of body position pillows, and discloses a painless gastrointestinal endoscope patient aspiration prevention body position pillow which comprises a head pillow, the front end of the head pillow is fixedly connected with a neck pillow, the front end of the neck pillow is fixedly connected with a chest pillow, and air bags are fixedly connected in the head pillow, the neck pillow and the chest pillow. A motor is fixedly connected to the interior of the chest pillow, a cam is fixedly connected to the output end of the motor, a sleeve is fixedly connected to the interior of the chest pillow, a piston is slidably connected to the interior of the sleeve, a push rod is fixedly connected to the front end of the piston, the push rod is sleeved with a spring, and an air conveying pipe is fixedly connected to the rear end of the sleeve. According to the body position pillow, the motor, the one-way valve and other structures are used in cooperation with the air bag, so that the height of the body position pillow can be automatically adjusted, accurate height adjustment can be achieved, it can be ensured that a patient is in the best body position, and comfort and support are provided.

The embodiment of the utility model discloses a film pasting tool which comprises a clamping frame, a pressing edge is arranged on the surface of the top of the clamping frame, and the thickness of the pressing edge is gradually increased from one end to the other end. According to the application, by utilizing the gradually thickened pressing edge, the tempered film and the mobile phone screen can be kept to have an inclination angle and are gradually contacted when being pasted, so that the film can be conveniently pasted while exhausting is carried out, the residual gas between the tempered film and the mobile phone is very little, and the operation efficiency is relatively high; the pressing edges which are gradually thickened are utilized, the limiting opening formed between the pressing edges can just limit the tempered film, one end of the tempered film abuts against the thicker ends of the pressing edges in the limiting opening, then the tempered film is slowly pasted, accurate film pasting of the tempered film can be effectively achieved through the film pasting tool under the condition that no release film is matched, and the film pasting tool is very convenient to use; and the condition that a film pasting tool cannot be used after the release film is torn off through misoperation is avoided.

The invention discloses an exhaust mechanism and a disinfectant making machine, comprising a cup mouth and a cover body covering the cup mouth, a sealing ring is arranged between the cover body and the cup mouth, the cover body is connected to the cup mouth by a non-sealing thread, and a thread gap is provided between the cover body and the cup mouth; an exhaust groove is provided on the surface of the sealing ring, one end of the exhaust groove is communicated with the inner cavity of the cup mouth, and the other end is communicated with the thread gap; the invention improves the structure of the sealing ring and the cover body, so that the disinfectant making machine can automatically exhaust the air and has good sealing to prevent the solution from flowing out; the invention has a simple structure, low cost, no maintenance, and good exhaust and leak-proof effects; the invention is not only applicable to the disinfectant making machine, but also applicable to other equipment and tools with exhaust, pressure relief and leak-proof requirements.

The utility model discloses a novel explosion-proof hollow glass structure which comprises a square frame, glass is fixed to the two ends of the inner side surface of the square frame, exhaust holes are formed in the inner side surface of the glass position of the square frame, a partition plate is fixed to the upper end of the square frame, vent holes are formed in the surface of the partition plate, and silica gel covers are fixed to the surfaces of the exhaust holes. Pin holes are formed in the surface of the silica gel cover, exhaust holes are formed in the upper end of the silica gel cover, the silica gel cover structure is arranged, the surface is provided with the pin holes, gas is extruded and exhausted along the pin holes during exhaust, extrusion exhaust is facilitated, a partition plate and an exhaust hole structure are arranged at the upper end of the square frame, blocking is avoided during use, and exhaust is facilitated.

The invention discloses a sand box upward pressing device for sand mold casting pouring and a construction method.The sand box upward pressing device comprises a support, a displacement frame and an air cylinder, the top of the support is slidably connected with the displacement frame through a first power mechanism, the air cylinder is arranged below the middle of the displacement frame, and a push rod at the lower end of the air cylinder is connected with a supporting plate; a clamping claw is connected to the lower portion of the supporting plate through a second power mechanism, a construction platform is arranged below the clamping claw, a sand box is arranged on the construction platform, and a supporting plate is arranged on the inner side of the construction platform. Transfer of the box pressing iron can be achieved, the supports are arranged on the periphery of the bottom of the box pressing iron, a gap channel is formed between the bottom of the box pressing iron and the sand box, the exhaust effect of molding sand is guaranteed, and the air hole defect of a casting is reduced; and by arranging the multiple pouring gate positions on the box iron, a worker can freely select a proper pouring gate for pouring, so that the working efficiency is improved, the product quality is ensured, and the mold is easy to popularize.

The utility model relates to the technical field of cutout cocks, and discloses a cutout cock for railway vehicles, which comprises a main pipe, a U-shaped auxiliary pipe is mounted on the outer wall of one side of the main pipe, mounting blocks are mounted on the inner walls of output ends of two sides of the auxiliary pipe respectively, a hydraulic cylinder is mounted on one side of one mounting block, a piston plate is mounted at the telescopic end of the hydraulic cylinder, and a piston rod is mounted on the piston plate. The outer wall of the piston plate is sleeved with a sealing ring, an abutting ring is installed on the inner wall, located on one side of the piston plate, of the auxiliary pipe, the abutting ring corresponds to the piston plate in position, and a pressure sensor is installed on the outer wall, close to one side of the main pipe, of the auxiliary pipe. And therefore, the pressure sensor detects that the pressure is increased, the hydraulic cylinder can drive the piston plate and the abutting ring to relieve limiting under the cooperation of intelligent connection, gas can be conveniently discharged from the auxiliary pipe, the gas is normally output, and the safety coefficient of a train is increased.

The utility model discloses a wallpaper installation auxiliary device convenient to exhaust gas, and relates to the technical field of auxiliary devices, the wallpaper installation auxiliary device comprises an auxiliary device body, a moving wheel and a compression roller, the bottom of the auxiliary device body is movably installed with the top of the moving wheel, and the top of the auxiliary device body is movably installed with the bottom of the compression roller. The bottom of the back face of the auxiliary device body is fixedly connected with a communicating exhaust assembly. According to the auxiliary device, the communicating exhaust assembly is arranged to be matched with the pushing limiting assembly to stably absorb and exhaust air in wallpaper, and the problems that when an existing auxiliary device is used for installing the wallpaper, the air is inconvenient to exhaust, and consequently much air is prone to being accumulated in the wallpaper; the auxiliary device solves the problems that in the prior art, wallpaper cannot be tightly attached to the wall conveniently, the situation that the wallpaper falls and swells during installation is easily caused, inconvenience is caused in use, and the use effect of the auxiliary device is reduced, and the effect of adjusting exhaust is achieved.

The utility model provides a vacuum pre-cooling refrigeration system for vegetables, which relates to the technical field of vegetable refrigeration devices, and comprises a box body, a working box is fixedly connected to one side of the inner wall of the box body, a motor is arranged on one side of the inner wall of the working box, a worm is arranged at the output end of the motor, and two supports are fixedly connected to one side of the inner wall of the working box. The two supports are rotationally connected with the worm, one side of the surface wall of the worm is in meshed connection with a worm gear, a lead screw is installed on one side of the inner wall of the worm gear, the lead screw is rotationally connected with the box body, and the circumferential side of the surface wall of the lead screw is in threaded connection with three containing frames. Then the placing frame is driven to move equidistantly under the action of the connecting rod, and finally the vegetables are placed layer by layer under the action of the placing frame, so that the working efficiency of refrigeration operation in the box body is improved, the internal space of the box body is fully utilized, and extrusion damage to the vegetables is reduced.

The invention discloses a hydrogen storage tank filled with a hydrogen adsorption material, and belongs to the technical field of hydrogen storage tanks. The hydrogen storage tank filled with the hydrogen adsorption material comprises a tank body, a tank cover is installed at one end of the tank body, a heat exchange pipe is arranged in the tank body, the two ends of the heat exchange pipe penetrate through the other end of the tank body, the heat exchange pipe is in a U shape, a plurality of cooling fins are installed on the outer side of the heat exchange pipe, and the hydrogen storage material is arranged among the cooling fins. Supporting bases are installed on the two sides of the bottom end of the tank body, a bottom box is installed at the bottom ends of the supporting bases, a limiting mechanism is arranged in the bottom box, universal wheels are installed on the two sides of the bottom end of the bottom box, one end face of the tank cover communicates with a gas inlet and outlet pipe, a valve is installed at one end of the gas inlet and outlet pipe, and a gas inlet and outlet connecting pipe is installed at one end of the valve. The thermal management efficiency of the hydrogen storage tank can be effectively improved, the problem that an existing hydrogen storage tank is poor in thermal management effect is solved, and high practical value is achieved.

The utility model relates to the field of packaging adhesive films, in particular to a packaging adhesive film, which is formed by a plurality of warps and wefts which are interspersed and casted. Wherein at least one of the warps and the wefts is wavy; a semi-transparent gap is formed between two adjacent warps and two adjacent wefts; according to the packaging adhesive film provided by the utility model, the friction force of the packaging adhesive film is greatly increased through the up-down staggered structure, the packaging adhesive film has excellent anti-skid performance, meanwhile, the arrangement of the semi-transparent gaps enables exhaust to be easier, assembly lamination bubbles are obviously reduced, the structure enables the shrinkage of the adhesive film to be reduced, and in addition, the adhesive film produced by the structure is higher in process efficiency and is more energy-saving.

An excitation closer capable of improving closing reliability comprises a shell with a cavity, a first conductor and a second conductor, the first conductor and the second conductor are arranged in the shell in a penetrating mode in an insulated and opposite spaced mode, an excitation source and a piston are arranged in the cavity of the shell, the piston is of a shell-shaped structure with one end open and one end closed, and at least the peripheral face of the piston is made of conductive materials. The open end of the piston faces the driving force release end of the excitation source, and the closed end of the piston is arranged corresponding to the relatively spaced ends of the first conductor and the second conductor; the excitation source can act according to a received trigger signal to release driving force to drive the piston to move towards the first conductor and the second conductor, so that the piston is clamped between the ends, oppositely arranged at intervals, of the first conductor and the second conductor in a plastic deformation mode, and the first conductor and the second conductor are conducted. According to the invention, the reliability of conduction between the first conductor and the second conductor is improved through the plastically deformed piston.

The air purifier for environmental protection comprises a base, the top of the base is movably connected with a first shell, the inner side of the first shell is movably connected with a filtering assembly, and the top of the first shell is movably connected with a second shell. According to the air purifier, the filtering assembly and the negative ion generator are arranged, internal air can be filtered and purified, a first moving block and a first limiting block are arranged, the first limiting block can be driven to be inserted into a first limiting groove by rotating a double-thread threaded rod, the first shell and the base can be conveniently disassembled and assembled, and through a third limiting block and a third limiting groove, the first shell and the base can be conveniently disassembled and assembled. And by arranging a second moving block and a second limiting block, the second limiting block can be pushed to be inserted into a fourth limiting groove, the connection stability of the first shell and the second shell is improved, the first shell and the second shell are conveniently disassembled and assembled, and the interior of the purifier is conveniently cleaned.

The utility model provides a combined die for conveniently machining a steel forging piston head, and belongs to the technical field of die forging. The combined die for conveniently machining the steel forging piston head comprises a workbench, four fixing columns are arranged at the top of the workbench, a lower die sleeve is arranged in the workbench, a lower female die is arranged in the lower die sleeve, a lower die core is arranged in the center of the bottom of the lower die sleeve, an annular ejector rod is arranged in the lower die core, and a cooling mechanism is arranged on the workbench and comprises a water inlet pipe. The water inlet pipe is arranged on one side of the workbench and provided with a water pump and a refrigerating device, a radiating pipe is arranged around the lower die sleeve in the workbench, a water outlet pipe is arranged on the side, away from the water inlet pipe, of the workbench, a base plate is arranged on the top of the workbench, the periphery of the base plate is in sliding connection with the four fixing columns, an upper die sleeve is arranged at the bottom of the base plate, and a punch is arranged in the upper die sleeve. The steel piston head can be conveniently machined and forged, the structure is simple and clear, operation is easy, and high practical value is achieved.

The utility model discloses an optical filter pasting device, which comprises a pressing mechanism and an exhaust mechanism, and is characterized in that the pressing mechanism comprises an air cylinder, a cylinder body arranged at the telescopic end of the air cylinder, a telescopic rod moving along the cylinder body and a pressing strip arranged at the bottom of the telescopic rod; the air exhausting mechanism comprises a supporting arm movably matched with the outer wall of the barrel body, a connecting rod movably matched with the supporting arm, a roller frame arranged on the side wall of the supporting arm and a pressing roller arranged on the roller frame. Under the action of descending of the barrel, the supporting arm is used for pushing the pressing roller to roll, bubbles between the optical filter body and the lens base are squeezed out through the pressing roller, the optical filter body and the lens base can be tightly attached, the bubble discharging speed is high, the effect is good, and use is convenient.

The utility model provides a vacuum drying box which comprises a bottom plate, a placing plate arranged on the upper portion of the bottom plate, a working box arranged on the upper portion of the bottom plate, electric telescopic rods symmetrically arranged on the upper portion of the working box, sealing covers arranged at the ends of pushing rods of the two electric telescopic rods, and clamping grooves formed in the positions, corresponding to the sealing covers, of the upper portion of the placing plate. A vacuum pump is arranged on one side of the upper portion of the working box and connected with the upper portion of a sealing cover through an exhaust pipe, a pressure gauge is arranged on the vertical face of one side of the sealing cover, and electric heating pipes are symmetrically arranged on the upper portion of the inner side wall of the sealing cover. And therefore, the space can be saved, the device can normally work in an environment suitable for a narrow space, and the sealing cover and the placing plate can be conveniently cleaned.

The utility model discloses an exhaust system of an aluminum casting die, which comprises a gas guide tank, the bottom end of the gas guide tank is fixedly connected with supporting legs, the top end of the left side of the gas guide tank is fixedly connected with a gas inlet, the right side of the gas guide tank is fixedly connected with a gas outlet, and a reset structure for an automatic closing device is arranged in the gas guide tank. According to the exhaust system of the cast aluminum mold, the movable plug is arranged, after the exhaust system is connected with an exhaust channel of the cast aluminum mold, air in the mold is guided into the top end of the interior of the air guide tank through the air inlet, the movable plug can be pushed to descend after the air pressure of the top end of the interior of the air guide tank reaches a certain value, and after the movable plug descends, the air outlet communicates with the interior of the air guide tank; and after the air pressure is reduced, the spring quickly jacks the movable plug back to enable the movable plug to be attached to the bottom of the positioning ring, so that the device is automatically closed while the aluminum liquid is prevented from overflowing, and the problem of automatic opening and closing is solved.

The utility model discloses a cathode collector plate structure of a cylindrical battery and the cylindrical battery, and the cathode collector plate structure comprises a cathode collector plate body, the negative collector plate body is provided with at least two collector plate welding parts used for being welded with tabs of a battery cell, and at least two collector plate elastic sheets staggered with the collector plate welding parts; a collector plate side wing is connected to the circumferential edge of the negative collector plate body, and the lower end of the collector plate side wing is flush with or higher than the negative collector plate body. According to the scheme provided by the utility model, the collector plate welding part and the collector plate elastic sheet are arranged at an interval, the collector plate side wing is arranged on the side edge of the collector plate body and is connected with the battery shell, the joint of the collector plate side wing and the collector plate body is in arc transition, and the lower end of the side wing is flush with or slightly higher than the collector plate body; according to the scheme, the problem of potential safety hazards caused by the fact that the edge sinks and is inserted into a roll core during rolling groove sealing is solved.

The utility model provides a high-frequency power supply for electric precipitation, and belongs to the technical field of high-frequency power supplies. The high-frequency power supply for electric precipitation comprises a bottom plate, a transformer is arranged at the top end of the bottom plate, first heightening blocks are installed at the four corners of the bottom end of the transformer, the bottom ends of the first heightening blocks are fixedly connected with the top end of the bottom plate, a power box is installed at the top end of the transformer, and second heightening blocks are installed at the four corners of the top end of the power box; a heat dissipation mechanism is mounted on the inner side of the opening and comprises a heat dissipation cover, a fixing frame is mounted on the inner side of the heat dissipation cover, a heat dissipation fan is mounted at the top end of the fixing frame, a dustproof net is mounted at the top end of the heat dissipation cover, and exhaust ports are formed in the two sides of the bottom end of the power box correspondingly; the heat dissipation uniformity of the transformer can be effectively improved, the heat dissipation effect on the transformer is improved, and the high practical value is achieved.

The present invention relates to the field of photosensitive technology, and in particular to a photosensitive resin composition and its application. The photosensitive resin composition provided by the present invention comprises: a resin having a structure shown in Formula I, a phenolic hydroxyl compound and a photosensitizer; wherein M has a structure shown in Formula II; R 1 , R 2 and R 3 R is independently selected from a divalent to hexavalent organic group of C2 to C20; 4 and R 5 independently selected from hydrogen, alkali metal ions, ammonium ions or organic groups containing 1 to 20 carbon atoms; o is selected from integers of 3 to 100,000; n and m are independently selected from integers of 0 to 2; p is selected from integers of 0 to 8, q is selected from integers of 0 to 4, and p+q>0. The photosensitive resin composition of the present invention can be used to obtain a sheet and a cured film with excellent light transmittance.

The utility model discloses a smoke dust recovery device for composite zinc oxide production. The smoke dust recovery device comprises a shell, a filter assembly and an exhaust fan, an air inlet pipe is fixedly connected to an air inlet in the front side face of the shell, a sliding groove is formed in the front end of the upper surface of the shell, a mounting frame is slidably connected to the inner wall of the sliding groove, the mounting frame and the sliding groove are connected through a mounting mechanism, a mounting groove is formed in the mounting frame, and a filter screen is inserted into the mounting groove; the filtering assembly is arranged at the upper end of the inner wall of the shell; the exhaust fan is fixedly connected to the interior of an installation opening in the rear side face of the shell, and an exhaust opening of the exhaust fan extends into the shell, according to the smoke dust recovery device for composite zinc oxide production, a filter screen in the smoke dust recovery device for composite zinc oxide production can be installed more easily, conveniently, rapidly and flexibly, a safer and more stable connection mode is provided, and the smoke dust recovery device for composite zinc oxide production is convenient to use. Meanwhile, during replacement, the tedious bolt installation step is omitted, and time and labor cost are saved.

A refractory material and its preparation method and application, belonging to the technical field of refractory materials, the refractory material uses plate-shaped corundum modified coarse aggregate, plate-shaped corundum fine aggregate, modified artificial graphite, antioxidant, anti-corrosion agent and adhesive as raw materials. Among them, the plate-shaped corundum coarse aggregate is modified by combining coal gangue purification powder and nano-grade carbon black, which has a smaller porosity, increased volume density and strength. The delayed petroleum coke powder is modified by using plate-shaped corundum powder and phenolic resin powder, and the modified artificial graphite is sintered to prepare the modified artificial graphite, which has a certain improvement in compressive strength, thermal shock resistance, creep rate, etc., and the graphite component is not exposed on the surface of the slide. The modified plate-shaped corundum coarse aggregate and the modified artificial graphite are used in combination, which can greatly improve the strength, good thermal shock stability, and low creep rate; each time the hole is expanded, the diameter is small, the erosion resistance and erosion resistance are good, the carbon content entering the molten steel is very low, and it will not greatly affect the carbon content of low-carbon molten steel, and can be used for the pouring of low-carbon molten steel.

The utility model relates to the technical field of insoles, and discloses an air circulation insole which comprises an insole body, an air bag is arranged at the heel of the insole body, and sponge is arranged in the air bag. An air channel is formed in the middle of the insole body, and the interior of the air channel is communicated with the interior of the air bag. According to the utility model, the sponge prevents the inner walls of the air bags from being bonded with each other, the air bags and the sponge increase the foot feeling and have a damping effect on the soles, and meanwhile, when the soles tread the air bags in a reciprocating manner in the walking process, air in the sponge is extruded into the air passages, so that the air in the air passages is prevented from entering the air passages, and the air in the air passages is prevented from entering the air passages. When the sole is suspended and does not tread the air bag, the sponge rebounds and restores, the air flows into the air bag through the air holes and the air channel at the moment, the effect of air circulation of the foot is achieved, the air circulates in the shoe through treading of the foot, and exhausting, perspiration and peculiar smell removal can be well achieved.