1505results about How to "Reduce entry" patented technology

The invention discloses a communication network power distribution cabinet convenient for heat dissipation, and relates to the technical field of power distribution cabinets, and the power distribution cabinet comprises a composite mechanism. According to the communication network power distribution cabinet convenient to dissipate heat, through the design of a composite mechanism, the box body shell is used for storing electronic components, after long-time operation, the temperature in the box body shell rises, hot gas rises, and then the hot gas flows to the processing mechanism from the circular groove, so that the heat dissipation effect is achieved, and the internal temperature of equipment is reduced; the ventilation mechanisms are arranged on the two sides of the box body shell, so that the convection effect is achieved, the cold air flowing effect is improved, the cold air is located at the low position with the high density, hot air is squeezed upwards after entering the box body shell, the discharging speed is increased, and the heat dissipation efficiency is improved. The box body shell is supported through the supporting assembly, so that the effect of reducing deformation of the box body is achieved, and internal electronic elements are protected.

The invention discloses a dry-type transformer. The dry-type transformer comprises a transformer body, a housing, a bottom plate and a fan, wherein the transformer body is formed by a plurality of groups of encapsulated windings in an array mode, a supporting rod is arranged at the bottom of the transformer body and allow the encapsulated windings in each group to connect with each other, the supporting rod is arranged in a crossed mode, and first threaded holes penetrate the supporting rod; the transformer body is integrally arranged in the cavity of the housing, and the bottom of the transformer body is fixedly positioned with the bottom plate, and meanwhile, the transformer body is arranged in the housing through the fan, the whole device achieves dispelling the heat in the transformerbody, and the graphite material of housing side is protruding simultaneously, and the heat from the housing is diffused quickly, and the protrusion of the array distribution can reduce the air great dust entering the inner wall of the housing through air vents.

The invention belongs to the technical field of medical instruments, and particularly relates to a dense net support. The dense net support comprises a front fixing section, a blocking section and a rear fixing section, and the blocking section is located between the front fixing section and the rear fixing section. The plugging section is connected with the front fixing section through a front connecting piece, and the plugging section is connected with the rear fixing section through a rear connecting piece; the plugging section is used for plugging an aneurysm position of a blood vessel, the plugging section sequentially comprises an inner layer part, a middle layer part and an outer layer part from inside to outside, the inner layer part adopts an inner layer metal stent, and the outer layer part adopts an outer layer metal stent. The dense net stent can adjust hemodynamics more accurately, and it is ensured that the blood flow of healthy blood vessels is not affected while the aneurysm is closed; the sealing effect of the aneurysm is ensured, and thrombosis is well promoted, so that blocking and healing of the aneurysm are promoted; and the endothelialization process of the stent is facilitated, so that the success rate of fusing the stent into the blood vessel is improved, the effect of completely sealing the aneurysm opening is achieved, and the recurrence risk is reduced.

The invention discloses a moistureproof electrical cabinet sealing device for a wind power station, and relates to the technical field of electrical cabinet sealing and moistureproof, the moistureproof electrical cabinet sealing device comprises a cabinet body and a protection device, the top of the cabinet body is fixedly provided with a top plate, the right side of the cabinet body is slidably provided with a cabinet door in a penetrating manner, and a rubber strip is arranged between the cabinet body and the cabinet door. A first spring is arranged between the cabinet body and the cabinet door, the protection device comprises a limiting hole, a limiting frame, a limiting rod, a limiting block, a reset spring, a hollow block and a U-shaped plate, the limiting rod moves in the direction away from the cabinet door to drive the limiting block to move, and the limiting block moves to be separated from the limiting hole and release limiting of the cabinet door; the limiting hole is formed in the front side of the cabinet door, the limiting frame is fixedly installed on the right side of the cabinet body, electrical equipment can be effectively prevented from being exposed in humid air due to mistaken touch of external force through the U-shaped plate, and therefore the moisture-proof performance of the cabinet body is improved.

The utility model belongs to the technical field of perovskite cells, and discloses a novel packaging structure of a perovskite solar cell. Comprising a substrate and a perovskite solar cell arranged above the substrate, the perovskite solar cell is coated with a first packaging layer, a second packaging layer is arranged above the first packaging layer, the second packaging layer comprises a plurality of groups of blocking layers, each blocking layer comprises a hydrophobic layer and a water oxygen absorption layer which are alternately arranged from bottom to top, and the hydrophobic layers and the water oxygen absorption layers are arranged on the substrate. A hydrophobic layer is arranged on the uppermost layer in the barrier layers; and the blocking layer is coated with a sealing layer. And external water vapor and oxygen are subjected to multiple absorption and multiple blocking, so that the probability that the water vapor enters the perovskite battery is reduced. The water vapor barrier property is improved, the water vapor is prevented from permeating the surface of the perovskite solar cell, the probability of degradation caused by water vapor entering a perovskite layer in the perovskite solar cell is reduced, and the service life of the perovskite solar cell is prolonged.

The invention relates to a cable branch box, and relates to the technical field of branch boxes, the cable branch box comprises a box body and a box door installed on the box body, and the vertical side surface of the box body is provided with a heat dissipation port; an upper protective cover with an upward opening is fixedly arranged on the inner edge of the opening of the heat dissipation opening of the box body, a lower protective cover with a downward opening is fixedly arranged on the outer edge of the opening of the heat dissipation opening of the box body, a barrier plate is fixedly arranged on the edge of the opening of the lower protective cover, and a plurality of barrier holes are formed in the barrier plate; according to the cable branch box, in the application process of the cable branch box, the possibility that external impurities enter the box body is reduced through the arrangement of the upper protective cover, the lower protective cover and the blocking holes; and high-temperature gas in the box body can be discharged to the outside through the heat dissipation openings and the blocking holes, so that circulation of gas inside and outside the box body is realized, and the heat dissipation performance of the box body is ensured.

The invention relates to an adjusting method and system for outdoor charging of a vehicle-mounted battery and a terminal, and relates to the technical field of vehicle charging, and the adjusting method comprises the steps: when a real-time electric energy parameter is smaller than a reference early warning electric energy parameter, determining a remaining driving distance according to the real-time electric energy parameter and vehicle information; determining an actual target distance according to the current driving position and the target position; when the remaining driving distance is smaller than the actual target distance, a selected charging distance is determined according to the current driving position and the charging pile position; determining whether the selected charging distance is less than the remaining driving distance; if yes, calling a selected charging position based on the selected charging distance and outputting charging prompt information; if not, a charging distance and an actual target distance are selected according to the driving speed and the current driving position to determine a docking position and a docking path, and the intelligent charging vehicle is controlled to run; and based on the clamping device, the intelligent charging vehicle is driven to be in charging butt joint with the electric vehicle. The effect of improving the outdoor charging efficiency of the electric vehicle is achieved.

The invention provides a photovoltaic inverter for a solar photovoltaic module, and belongs to the field of photovoltaic inverters. Comprising a shell, a mounting seat is fixedly connected to the inner surface of the shell, a power module and a control module are fixedly connected to the outer surface of the mounting seat, ventilation grooves are symmetrically formed in the outer surface of the shell, and a dehumidification assembly is arranged on the inner side of the shell and comprises a partition plate fixedly connected with the lower end of the inner surface of the shell; a supporting plate is fixedly connected to the outer surface of the partition plate, a notch is formed in the outer surface of the upper end of the supporting plate, and a baffle is fixedly connected to the inner surface of the shell. Through the arrangement of the moisture removal assembly, air can be in full contact with the moisture absorption plate after entering the shell, moisture in the air can be effectively absorbed, the probability that condensation is formed in the inverter is reduced, the stability and safety of the inverter in the working process can be improved, and meanwhile the service life of the inverter can be effectively prolonged.

The invention discloses an automatic steel backing feeding device and method based on automobile brake pad production, and relates to the technical field of steel backing machining and feeding. The automatic steel backing feeding device and method based on automobile brake pad production comprise a feeding unit, a suction cup fixed to the feeding unit and used for sucking and pressing a cold-roll steel sheet of the automobile brake pad steel backing, and a control box placed beside the feeding unit, used for controlling the feeding unit to operate and provided with an image recognition module. The feeding unit is provided with a detection assembly which is located under a suction cup and used for detecting the surface cleanliness of the cold-roll steel sheet, the detection assembly comprises a fixing plate which is fixed to the feeding unit and used for supporting the detection assembly, and a sliding sleeve is movably installed at the bottom of the fixing plate and used for sliding the detection assembly to the feeding unit. The degree that the edge of the suction cup is folded into a wave shape is controlled according to the amount of oil dirt and oil sludge, different suction conditions of different steel plate surfaces are dynamically adapted, and the operation reliability and stability are improved.

The invention discloses a touch-type interactive all-in-one machine, and belongs to the field of interactive all-in-one machines, the touch-type interactive all-in-one machine comprises a machine body, a touch screen is fixedly connected to the outer surface of the upper end of the machine body in an embedded manner, a fixing frame is fixedly connected to the outer surface of the lower end of the machine body, a moisture-proof assembly is arranged on the inner side of the fixing frame, and the moisture-proof assembly comprises a movable part and a sealing part; the movable part comprises an air inlet groove formed in the outer surface of the fixing frame, and a first cavity is formed in the inner side of the fixing frame in an embedded mode. The moisture-proof assembly is arranged, and the air inlet groove is blocked and sealed through the movable plate, so that dust and moisture entering the cavity I can be reduced to a certain extent, and the probability of generating condensation in the cavity I can be reduced; and meanwhile, the probability that metal elements in the interaction all-in-one machine are corroded by moisture can be effectively reduced, so that the service life of the interaction all-in-one machine can be remarkably prolonged, and the adaptability and the working stability of the interaction all-in-one machine are improved.

The utility model discloses a connecting end of a fluid connector and the fluid connector, and relates to the technical field of connectors. The connecting end comprises a connecting part and an operating part, the connecting part comprises a valve seat and a valve movably connected to the valve seat, the operating part is movably connected to the outer side of the valve seat, the valve is connected with the operating part through a control hole in the valve seat, and the operating part can drive the valve to move when moving so as to control opening and closing of a communicating channel in the valve seat. According to the connecting end, the operating part is arranged outside the valve seat, when the communicating channel needs to be opened and closed, a user can drive the operating part to drive the valve to act, the valve seat does not need to be directly driven, and therefore the communicating channel can be opened and closed more conveniently.

The invention relates to the related technical field of dust treatment, and discloses a power plant dust monitoring and adjusting system with a raised dust suppression function, which comprises a box body, a treatment box is fixedly arranged in the box body, a first treatment cavity and a second treatment cavity are arranged in the middle of the interior of the treatment box, and a fixed frame is fixedly arranged in the second treatment cavity; a processing assembly is arranged in the fixing frame. The two second baffles get close to each other to extrude the multiple activated carbon particles, so that the inclination height of the multiple activated carbon particles between the two second baffles is reduced, the inclination width of the multiple activated carbon particles between the two second baffles is increased, the contact stroke of gas and the multiple activated carbon particles is prolonged, and the stability of the activated carbon particles is improved. The adsorption effect of the activated carbon particles on dust in the gas is improved, so that the treatment assembly can be adjusted according to the gas treatment quality condition, and the dust in the gas can be fully adsorbed and treated.

The invention provides a dry-wet cycle resistant composite soil stabilizer and a preparation method thereof. The curing agent is prepared from the following raw materials in parts by weight: 5 to 10 parts of polyacrylamide, 20 to 30 parts of cyclodextrin star derivative, 5 to 10 parts of polyvinyl alcohol, 5 to 8 parts of inorganic salt, 5 to 8 parts of sodium silicate, 10 to 15 parts of waterborne epoxy resin emulsion, 1 to 3 parts of polyoxypropylene triamine and water; the use amount of the water enables the solid content of the dry-wet cycle resistant composite soil stabilizer to be 25-60wt%; the cyclodextrin star derivative is prepared by carrying out esterification reaction on carboxymethyl-beta-cyclodextrin and methoxypolyethylene glycol according to the molar ratio of carboxyl to hydroxyl of 1: (1.1-1.2) under the action of a base catalyst; and the weight-average molecular weight of polyethylene glycol monomethyl ether is 1000 to 1500 g / mol. A plurality of grafting chains of the cyclodextrin star-shaped derivative disperse expansion and shrinkage stress of soil to different directions in the dry-wet cycle process, so that damage to a molecular structure due to stress concentration is avoided.

The invention relates to a cutting device for production of a polyurethane aluminum alloy composite heat insulation profile, and belongs to the technical field of profile cutting, the cutting device for production of the polyurethane aluminum alloy composite heat insulation profile comprises a workbench, and further comprises a cutting mechanism; and a liquid injection mechanism. Through cooperative use of the cutting mechanism and the chip removal mechanism, when the cutting mechanism is used for cutting, the chip removal mechanism extracts chips between cutting teeth, air acts on the cutting teeth to cool the cutting teeth, in addition, airflow generated by working of the chip removal mechanism will impact between a cutting disc and a protective cover, and the cutting disc and the protective cover are not damaged. One part of the airflow enters the air inlet end of the U-shaped pipe, the chip removal capacity of the circular cutter is improved again, and the other part of the airflow is discharged through the protective cover, so that an air wall is formed between the protective cover and the cutting disc, cuttings generated by cutting are prevented from entering the protective cover, the probability that the cuttings enter the protective cover is reduced, the circular cutter is protected, and the cutting efficiency is improved.

The invention discloses a subway tunnel piston air valve control method and device, electronic equipment and a storage medium, and the method comprises the steps: monitoring indoor and outdoor air indexes of each section of a subway tunnel, judging whether a triggering condition is satisfied or not according to at least one of the temperature and humidity in the indoor and outdoor air indexes, and determining a target control mode, so as to control the opening degree of a piston air valve, when the outdoor temperature is higher than the tunnel temperature or the outdoor humidity is too high, the opening degree of the piston air valve is reduced or even the piston air valve is closed, so that the tunnel is kept at low temperature and humidity, a low-temperature environment is provided for air conditioners of running trains in the tunnel and air conditioners in stations, and energy consumption of the air conditioners is reduced; when the outdoor temperature is lower than the tunnel temperature, the opening degree of the piston air valve is controlled to be increased; tunnel cold storage or heat storage and air conditioner energy conservation are achieved through asymmetric piston air ventilation, and the tunnel can learn to breathe; in addition, influence on electronic equipment, line safety and driver sight caused by condensation or fog due to too high humidity is avoided, safety risks and hidden dangers are reduced, and safe operation is ensured.

The invention provides a lens detection method and system, and the method comprises the steps: sequentially enabling transmission light to penetrate through a to-be-detected lens for imaging based on a plurality of different exposure values, and determining a plurality of candidate images; performing fusion according to the plurality of candidate images to determine a transmission image of the to-be-detected lens; identifying the transmission image to determine a plurality of abnormal pixel points of which the pixel values are smaller than a pixel threshold value; determining a defect area according to all the abnormal pixel points; and determining a detection result of the to-be-detected lens according to the defect area. Through the above detection method, the detection of the lens is more comprehensive, and the detection result is more reliable.

The invention discloses concrete with high salt corrosion resistance and a preparation method of the concrete. The concrete is prepared from 300-400 kg / m < 3 > of cement, 50-150 kg / m < 3 > of slag powder, 1000-1200 kg / m < 3 > of gravel, 650-800 kg / m < 3 > of machine-made sand, 0.5-2 kg / m < 3 > of a modified polycarboxylic acid water reducing agent, 0.005-0.01 kg / m < 3 > of an air entraining agent, 0.05-0.1 kg / m < 3 > of an ion chelating agent, 0.05-0.1 kg / m < 3 > of polyacrylamide, 0.01-0.05 kg / m < 3 > of sodium methyl silicate, 0.1-0.5 kg / m < 3 > of multiwalled carbon nanotube dispersion liquid and 140-160 kg / m < 3 > of water. The preparation method comprises the following steps: stirring and mixing the modified polycarboxylate superplasticizer, the air entraining agent, the ion chelating agent, the polyacrylamide, the sodium methyl silicate and part of the water for mixing to obtain an admixture mixed solution; sequentially putting broken stones, cement, machine-made sand, the admixture mixed solution, the multi-walled carbon nanotube dispersion liquid and the rest of mixing water into a stirrer, and stirring for 2-3 minutes, so as to obtain the concrete with high salt corrosion resistance. The concrete has high salt corrosion resistance in a complex service environment, the service life of a concrete structure is effectively prolonged, and a reliable guarantee is provided for infrastructure construction.

The invention discloses an anti-condensation electric power ring main unit based on optical radiation heating, and relates to the technical field of ring main units, and the anti-condensation electric power ring main unit comprises a composite mechanism. According to the anti-condensation power ring main unit based on optical radiation heating, through the design of a composite mechanism, the composite shell is used for storing and placing electronic elements, in the daily operation process of the electronic elements, the temperature in the composite shell rises, the temperature difference between the interior and the exterior of the equipment is large, and condensation occurs in the equipment; the heater adopts optical radiation heating to prevent condensation, mainly converts optical radiation energy into heat energy, increases the temperature of an object or a space, and enables the temperature of the surface of the object to be higher than the dew point temperature, so that water vapor is prevented from being condensed into dewdrops on the surface of the object, the water vapor is absorbed through the moisture-proof mechanism, and the interior of the equipment is kept dry. And the ventilation mechanism is used for ventilating the interior of the composite shell, so that the temperature difference between the interior and the exterior is reduced, the probability of condensation is reduced, and the equipment is protected to a certain extent.

The present invention discloses a multi-source, multi-dimensional, and multi-scale data fusion method and system, which relates to the technical field of data fusion, including determining a data source according to a data source management principle, sending a session key to the data source, and collecting data after pairing; classifying and integrating the collected data according to the required purpose, separating the corresponding dimension value for each type of data, and separating the scale information from the dimension value; classifying and integrating the dimension value of each type of data again, sorting the various types of dimension values ​​horizontally according to the corresponding spatial information, and sorting them vertically based on the time information corresponding to the various types of dimension values ​​to construct a data space coordinate system; establishing an index for each type of dimension value on the spatial coordinate system, and when the required purpose begins, searching for the required data according to the index. The present invention associates the dimension value with the data and purpose by constructing a dimension data relationship table, and constructs a data space coordinate system based on the scale information in the dimension value, so that the data classification is more intuitive and neat.

The invention relates to the technical field of digestive endoscopes, in particular to a digestive endoscopy simulation device which comprises a base, and four sets of supporting legs used for supporting the device are fixedly connected to the bottom of the base; the device further comprises a first simulation bin, the middle position of the top of the first simulation bin is provided with a stomach simulation area for digestive endoscopy practice, and a first empty groove for installing a cleaning device is formed in the position, located on one side of the stomach simulation area, of the top of the first simulation bin. A second empty groove is formed in the top of the first simulation bin and located on the other side of the stomach simulation area, at the moment, the contact positions of a first scraper and a second scraper with the stomach simulation area are controlled through mutual adjustment of a second hydraulic oil cylinder and a third hydraulic oil cylinder, the interior of the stomach simulation area can be cleaned and scraped, manual work is not needed, and the working efficiency is improved. High-intensity cleaning can be effectively carried out on the interior of the stomach simulation area, the health of the internal environment of the simulation device is kept, and the service life of the device is prolonged.

The present application provides a crusher with adjustable crushing roller gap, which relates to the field of crushers and includes a chassis, a transmission assembly is fixedly installed on the back of the chassis, and a motor is fixedly installed on the outside of the transmission assembly. In order to solve the problem that in the prior art, the manual or spiral mechanism adjusts the position of the crusher's movable roller to adjust the roller gap, the labor intensity of the workers is high, the roller gap control is not accurate, the system is unstable, and it is particularly unsuitable for working occasions where the crusher's discharge particle size changes frequently, the present application uses a first electric cylinder to drive the drive rod in the crushing assembly to move, so that the drive rod squeezes the extrusion block, so that the extrusion block extends outward, and then adjusts the distance between two adjacent extrusion blocks, and adjusts the height of the protrusion to adjust the distance between the crushing rollers, and achieves fine-tuning, so that the crusher's discharge particle size can be adjusted according to demand.

The invention discloses a preparation method of a vesuvianite coarse aggregate anti-crack Portland cement-based material, which comprises the following steps: (1) soaking vesuvianite coarse aggregate in a saturated ammonium dihydrogen phosphate solution, and drying to obtain pretreated aggregate; (2) uniformly mixing carbon powder with a solution containing a saturated magnesium ion source, adding ammonia water, and pyrolyzing the obtained mixture to obtain pretreated carbon powder; and (3) uniformly mixing the pretreated carbon powder with molten stearic acid, heating, preserving heat, cooling to room temperature, and grinding to obtain the anti-cracking agent. And (4) adding the anti-cracking agent into the pretreated aggregate of which the surface is wetted by an anhydrous solvent under a stirring condition, uniformly mixing, heating, preserving heat, and cooling to room temperature to obtain the modified coarse aggregate. And (5) uniformly mixing Portland cement, the modified coarse aggregate, the fine aggregate, the filler, the silica fume and the water reducing agent, adding water, and uniformly stirring to obtain the cement-based material. The method provided by the invention can effectively relieve the problem of performance degradation caused by concrete structure cracking caused by the pelelith aggregate.

The invention relates to a film-forming filtrate reducer and a preparation method thereof, workover fluid and a workover method, and relates to the field of workover, the film-forming filtrate reducer comprises an oil phase, an emulsifier, acrylamide, N-vinyl pyrrolidone, 2-acrylamido-2-methylpropanesulfonic acid, hexadecyl dimethyl allyl ammonium chloride, water and an initiator; the workover fluid comprises water, a tackifier, a plugging agent, an acid-soluble temporary plugging agent, an interface modifier, a corrosion inhibitor, a weighting agent and the film-forming filtrate reducer. According to the film-forming filtrate reducer provided by the invention, specific acrylamide, N-vinyl pyrrolidone, acrylamido-2-methylpropanesulfonic acid and hexadecyl dimethyl allyl ammonium chloride are subjected to reverse emulsion polymerization to obtain a polymer, and the polymer is greatly adsorbed on the surface of a filter cake under the action of high temperature and high pressure to form a high-toughness polymeric film; the filter loss is reduced; the temperature resistance of the workover fluid is larger than or equal to 180 DEG C, the pressure-bearing plugging capacity of the workover fluid to a crack core is larger than 10 MPa, and the permeability recovery value is larger than or equal to 92%.

The invention discloses a water adding and dust removing grooving machine which is composed of a driver, a grinding wheel cover plate, a grinding wheel cover, a machine shell and a handle shell, water retaining strips are arranged on the grinding wheel cover plate and the grinding wheel cover, the grinding wheel cover plate and the grinding wheel cover are connected to form an integral grinding wheel cover, sewage generated by cutting cannot be splashed to the body of a constructor, and the construction quality is improved. A rotor cooling air inlet and an annular water retaining ring are arranged on a handle shell, sewage generated by water adding and dust removal during cutting and carried micro-fine sand are prevented from being sucked into a shell cavity through negative pressure generated by rotation of a rotor cooling fan, winding insulating paint on a rotor and a stator, a commutator connected to a rotor spindle and bearings connected to the two ends are damaged, and the rotor cooling effect is achieved. A holding mode conforming to the use habits of operators is achieved, the head of the machine body is upward, the machine tail is downward for cutting, meanwhile, the hidden danger that water enters the cavity of the machine shell and leaks electricity to hurt people is prevented, and the machine has the advantages of being simple in structure, small in size, low in cost, long in service life and convenient to operate.

The utility model relates to an American box-type substation, which relates to the technical field of box-type substations and comprises a box body and a box door mounted on the box body. The side face, away from the box door, of the box body is provided with an access opening and an access door used for blocking the access opening, one side of the access door is hinged to the box body, and the access door is provided with a locking assembly used for achieving connection of the access door and the box body. Through cooperative arrangement of the access hole, the access door and the locking assembly, when electrical equipment in the box body needs to be overhauled during work, a worker can adjust the locking assembly and unlock the access door and the box body, so that the access door is opened; a worker can directly overhaul the electrical equipment installed in the box body through the access hole, so that the worker can conveniently overhaul the electrical equipment by using a tool, and the overhaul efficiency of the box-type substation is further improved.

The utility model relates to the field of pneumatic gathering devices of compact spinning machines, and discloses a protective cover and device for preventing compact spinning special-shaped pipes from being clamped, which comprises a cover body of an arc-shaped plate structure. Each connecting piece comprises a fan-shaped base plate, a turnup edge extending along the arc-shaped edge of the base plate is vertically arranged on one face of the base plate, the radian of the turnup edge corresponds to the radian of the cover body, the protruding face of the turnup edge is attached to the inwards-concave face of the cover body, and meanwhile bolt holes are vertically formed in the base plate. The special-shaped pipe can be effectively prevented from being impacted by air flow generated in the spinning process, and flyings can be prevented from flowing into the special-shaped pipe; fly entering the special-shaped pipe, the grid and the tension bracket is reduced, the service life of the special-shaped pipe is prolonged, the number of times of truck clamping is reduced, meanwhile, the maintenance difficulty is reduced, the production efficiency is improved, the labor cost is reduced, and the labor intensity of operators is also reduced. Installation is convenient, and the structure of an existing spinning machine does not need to be changed.

The utility model relates to the technical field of headboxes, in particular to a headbox flow control device. Comprising a headbox; a stirrer is arranged on one side of the headbox; the stirrer is connected with the headbox through a conveying pipe; the stirrer is connected with the conveying pipe through a conveying pump; an adjusting box is mounted between the conveying pipe and the headbox; one end of the conveying pipe is connected with the conveying pump; by arranging the adjusting box, when the conveying pump conveys flow pulp containing foam to the adjusting box, the foam in the flow pulp floats upwards to the upper end of the liquid level under the action of buoyancy, so that the flow pulp can flow into the flow pulp box through the connecting pipe at the lower end, the amount of the foam entering the flow pulp box is reduced, the density of a calcium silicate board is increased, and the production efficiency is improved. The strength and the stability of the plate are improved, bubble holes formed in the surface of the plate are reduced, and the appearance quality and the surface flatness of the plate are improved; therefore, the practical application effect of the utility model is effectively improved.

The invention belongs to the technical field of beverage preparation appliances, and particularly relates to a coffee preparation device. A coffee making device comprises a cup body, a cup cover and an extraction assembly, the extraction assembly comprises an extraction basket used for containing coffee powder, and a plurality of coffee extraction holes are formed in the wall body of the lower end of the extraction basket; the cover body is located at the upper end of the opening of the extraction basket, the cover body is matched with the extraction basket, a pressurization space can be formed between the cover body and the extraction basket, and an inflation hole communicated with the extraction basket is formed in the bottom of the cover body; and a pressurizing device for pressurizing the pressurizing space. The pressurizing device is arranged in the cover body and is connected with the inflating hole; or, the pressurizing device is matched with the cup cover, and the pressurizing device can be communicated with the inner space of the cover body. The coffee maker has the advantage that a user can conveniently and quickly make fresh coffee drinks at any place.

A sundry blocking and collecting device comprises a sundry collecting assembly installed on a dust removal pipeline, the sundry collecting assembly comprises a sundry collector, and a first pneumatic valve connected with the dust removal pipeline is installed on a dusty air inlet of the sundry collector; a second pneumatic valve connected with the dust removal pipeline is mounted on the dusty air outlet; an impurity outlet is formed in the end close to the dust-containing air inlet; the impurity outlet is connected with a filter material barrel, and an impurity inlet of the filter material barrel is provided with a third pneumatic valve; a fourth pneumatic valve is mounted at an impurity outlet of the filter drum; an air cannon blowback inlet is formed in the end close to the dusty air outlet, an air cannon blowback valve is installed on the air cannon blowback inlet, and the air cannon blowback valve is connected with an air cannon; and a sundry blocking component is arranged below the air cannon reverse blowing inlet in the sundry collector. According to the utility model, the impurities in the raw material ore in the mine production process are effectively intercepted and collected, the performance of the dust remover is improved, the service life of the dust remover is prolonged, the maintenance cost is reduced, the environmental pollution is reduced, and the dust remover has obvious environmental protection benefits.

The invention belongs to the technical field of underwater construction materials, and particularly relates to a self-leveling anti-dispersion underwater bottom sealing material and a preparation method thereof. The self-leveling anti-dispersion underwater bottom sealing material disclosed by the invention is prepared from the following components in parts by weight: 530 to 730 parts of sulphoaluminate cement, 77 to 277 parts of ordinary Portland cement, 84 to 126 parts of fly ash, 870 to 950 parts of fine aggregate, 250 to 278 parts of water, 18 to 23 parts of a water reducing agent, 6 to 10 parts of a flocculating agent, 8 to 12 parts of a retarder, 0.9 to 1.4 parts of a de-foaming agent and 0.1 to 0.4 part of an early strength agent. The self-leveling dispersion-resistant underwater bottom sealing material disclosed by the invention has good fluidity and dispersion resistance.