238results about How to "Novel design concept" patented technology

The invention relates to an alternating current (AC) converter for converting high voltage to low voltage in the field of power electronics. The converter comprises an AC chopper circuit, a high-frequency transformer circuit, a rectifier and filter circuit, a waveform conversion circuit and a working frequency inversion circuit which are sequentially connected in series, wherein the AC chopper circuit is used for converting input high-voltage working frequency AC voltage into high-frequency impulse high-voltage AC voltage and outputting the converted voltage to the high-frequency transformer circuit; the high-frequency transformer circuit is used for converting high-frequency impulse high-voltage AC voltage into full wave direct current (DC) voltage and outputting the full wave DC voltageto the rectifier and filter circuit; the rectifier and filter circuit is used for converting the high-frequency impulse low-voltage AC voltage into full wave DC voltage and outputting the full wave DC voltage to the waveform conversion circuit; the waveform conversion circuit is used for boosting the full wave DC voltage, adding input current to the full wave DC voltage and then outputting the combined voltage and current to the working frequency inversion circuit; and the working frequency inversion circuit is used for inverting the DC voltage into working frequency AC sine wave voltage or AC square wave voltage and outputting the inverted voltage. The converter is an AC-AC conversion circuit which has the advantages of small volume, light weight, high efficiency, low cost, simple designand high reliability and can run with a unit power factor.

The invention discloses an underground total darkness environment high definition video collecting and processing system as well as a collecting and processing method. The system comprises a power supply unit, a microprocessor, a video collecting and processing unit, a voice processing unit, a displaying unit, a storing unit, a wireless transceiving unit and an USB interface; the above units are connected to compose a mobile terminal equipment for collecting audio and video signals, and performing wireless transceiving, playback and wired output to the collected signals; the video collecting and processing unit comprises an optical lens, a micro image intensifier, a CMOS image sensor and a white light secondary light source. The method comprises: 1. collecting voice and video signals; and 2. performing wireless transceiving, playback and wired output to the collected signals by the microprocessor. The used equipments in the invention are simple in structure, small in volume, flexible in networking, light and convenient in mobilizing, low in cost and low in power consumption, can realize underground total darkness environment high definition video collecting and processing and real-time low power consumption mobile voice communication.

The invention provides an interleaved power factor corrector with approximate open-loop control in the technical field of power electronics. The interleaved power factor corrector comprises a rectification circuit, an input voltage detecting circuit, a booster circuit, an output detecting circuit, a voltage polarity detecting circuit and a control unit, wherein the rectification circuit, the input voltage detecting circuit, the booster circuit and the output detecting circuit are cascaded with one another in turn; and the voltage polarity detecting circuit, the input voltage detecting circuit, the booster circuit and the output detecting circuit are respectively connected with a control unit. By using the invention, conversion between an alternating current and a direct current is realized; and the interleaved power factor corrector provided by the invention has the advantages of linear input impedance, high power grade, simple structure, easiness in control and low cost.

A method for keeping center of a vibration table for low air-pressure and vibration combined test and a device thereof relate to the field of mechanics environment test equipment. In the device, the inner space of an electric vibration table is designed to a sealed rigid air chamber, and the table is positioned at a vibration center of a vertical vibration test or horizontal vibration test and is supported by floating balance between the air pressure of a low air-pressure test box arranged on one end of the table and the air pressure of a rigid air chamber arranged on the other end of the table. A measuring device is used for detecting the distance and direction of the table static and dynamic deflection from the theoretical vibration center position, and an aeration passage and two exhausting passages aerate and exhaust the rigid air chamber to keep the table at the vibration center position during the test. The method and the device are applicable to the vertical vibration combined test and the horizontal vibration combined test, the vibration table can be automatically always kept at the vibration center position during the combined test, in particular when the test low air pressure is in aeration state, the vibration table can also be always kept at the vibration center position.

The invention relates to the field of composite materials for denture, in particular to a zirconium oxide / resin bionic composite material for the denture and a preparation method thereof. The zirconium oxide / resin bionic composite material is prepared from the following components of 20vol% to 97vol% of zirconium oxide and biocompatible resin, and is of a bionic lamellar structure, a brick-wall structure or a crossed laminating structure in a microscopic way. The zirconium oxide / resin bionic composite material has the advantages that the oriented porous blank with the lamellar structure is obtained by slurry preparation, freezing-casting and vacuum freeze-drying, and is compressed along the lamellar structure direction to form the crossed laminating structure; the zirconium oxide skeletonwith the lamellar structure or crossing laminating structure can be prepared by removing organic matters and sintering, and the zirconium oxide skeleton of the brick-wall structure can be obtained through the vertical compression of the lamellar structure skeleton and the secondary sintering; the surface is subjected to surface modifying and liquid resin monomer permeating, and the resin is polymerized, so as to obtain the zirconium oxide / resin bionic composite material for the denture with the bionic structure; the prepared zirconium oxide / resin bionic composite material is mainly used as thedenture, so as to reduce the abrasion to the normal teeth of a human body by the denture.

The invention relates to a linear alternating current-direct current (AC-DC) converter for an alternating chopped wave, a high-frequency conversion circuit and an impedance conversion circuit in the technical field of electrical and electronic engineering. An output end of the high-frequency conversion circuit is connected with an input end of the impedance conversion circuit. The high-frequency conversion circuit comprises a first filter circuit, an alternating chopping circuit, a high-frequency transformer and a second filter circuit, which are in cascade connection sequentially. The impedance conversion circuit comprises a rectifying bridge and a boosting circuit which is in cascade connection with the rectifying bridge; the midpoints of two bridge arms of the rectifying bridge are respectively connected with two alternating current output ends of the high-frequency conversion circuit; and an output end of the boosting circuit outputs a direct-current voltage. The linear alternating current-direct current (AC-DC) converter outputs a stable direct-current voltage and generates a unit input power factor at the same time, achieves a flexible voltage-regulating capability, obtains a linear input impedance, overcomes the defect that a power supply fluctuation and a load fluctuation interfere with each other, has the characteristics of novel design, strong generality and the like and has the advantages of simple structure and low cost.

The invention belongs to the technical field of biochemical sewage treatment equipment, and particularly relates to a gas-liquid-solid three-phase separator. A main body structure comprises a tank body, folded inclined plates, gas-water-sludge mixed flowing gaps, gas-water-sludge separating zones, clear water gaps, sludge collecting zones, gas collecting zones, clear water zones, a water outlet ditch, sludge reflowing pipes, a reaction zone and biogas pipes; by adoption of a shallow-layer sedimentation theory, the folded inclined plates squeeze and diffuse gas-water-sludge mixed liquid flowingup into the three-phase separator from the anaerobic reaction zone through the gas-water-sludge mixed flowing gaps, biogas is collected in the gas collecting zones and discharged through the biogas pipes, sludge and air-free sludge sink into the sludge collecting zones under the action of gravity and reflow into the reaction zone through the sludge reflowing pipes, and sewage from which the sludge and the gas are removed rises into water collecting zones through the clear water gaps, so that full separation of gas, water and sludge phases is achieved; and the gas-liquid-solid three-phase separator is simple in structure, novel and unique in design concept, high in gas-liquid-solid separation performance, high in practicality and good in hydraulic condition, and can improve the operating stability and the operating efficiency of a three-phase reactor.

The invention relates to the technical field of industrial power supplies, in particular to an industrial automatic waterproof power supply. The power supply comprises a box, a fixed plate is arrangedon the right side of the box, a fixed rod is arranged at the bottom end of the fixed plate, louvre blades are rotationally connected to the fixed rod through rotating shafts, first baffles are arranged at the two ends of each louvre blade, a gear is arranged at the front section of each rotating shaft, a water storage tank is arranged at the right side of the fixed plate, a floating ball is arranged in the water storage tank, limiting plates are arranged at the two sides of the floating ball, a connecting rod is fixedly connected to the top of the floating ball, and a rack is fixedly connected to the left upper end of the connecting rod. Accordingly, by means of the water storage tank, the floating ball, the gear, the rack and a drain pipe, when it rains, the louvre blades can be closed automatically, a power supply box is protected, and when the rain stops, the louvre blades are opened automatically to assist cooling; in this way, the idea is novel, design is scientific, the huge economic benefit and wide market prospect are achieved, and the power supply is worthy of application and popularization.

The invention discloses a coffee machine, comprising a shell and an infusing device matched with the shell, wherein the shell is internally provided with a water storage tank; the water storage tank comprises a first water storage tank and a second water storage tank; the second water storage tank is connected with a boiling vessel for providing steam and hot water; the boiling vessel is communicated with the infusing device through a connecting pipe; a container body is arranged between the first water storage tank and the infusing device; the container body is provided with a water inlet and a water outlet; the water inlet of the container body is connected with the first storage tank; the water outlet of the container body is connected with the infusing device; and the container body is further provided with a pressurizing device for pressurizing to discharge water. The coffee machine is special and novel in the design, obviously shortens the infusing time of the first cup of coffee without influencing the taste of the infused coffee, and is simple in the structure, convenient and practical.

The invention discloses an indoor measuring apparatus and method for dynamic spray deposition distribution characteristics of a boom sprayer. The measuring apparatus comprises a motion simulation platform for installing a spray boom, and is characterized in that the measuring apparatus is provided with a dynamic spray distribution measuring system. The dynamic spray distribution measuring system comprises a test computer and one or more online measuring unit, the online measuring unit is provided with a belt conveyor, a measuring capacitance sensor, a reference capacitance sensor, a temperature sensor and a drying device, and signal output ends of the measuring capacitance sensor, the reference capacitance sensor and the temperature sensor are separately connected with the test computer. By adopting the measuring apparatus and method, the change of an electric signal of a capacitor is analyzed and measured, so that the spray distribution uniformity of the boom sprayer under the field operation motion state can be measured, and the optimization test of the spray boom operation parameters can be carried out; and moreover, the indoor measuring apparatus is novel in design concept, convenient in operation, easy in construction and suitable for popularization and application.

The invention discloses a waste gas centralized processing device used for a hot in-place recycling machine. The waste gas centralized processing device comprises an air heater. The air heater is provided with a low oxygen burner and connected with an air outlet pipeline. The air outlet pipeline is connected with a first ground heating plate. Air outlet holes and air recycling openings are formed in the first ground heating plate. The air recycling openings communicate with an air return pipeline. The end of the air return pipeline is connected with an air volume distributor. The air volume distributor is connected with the low oxygen burner through a first conveying air duct and connected with an electric heating smoke removing device through a second conveying air duct. An air outlet of the electric heating smoke removing device is connected with a second ground heating plate. According to the waste gas centralized processing device used for the hot in-place recycling machine, poisonous and harmful asphalt flue gas produced by heating of an old asphalt pavement is subjected to centralized collection and centralized processing through the air negative pressure; fuel is fully and circularly utilized; pollution-free hot air is formed after the poisonous and harmful asphalt flue gas is processed; the ground is continuously subjected to heat preservation and heating; energy conservation and environment protection are achieved; atmospheric pollutants are not produced; and the design concept is novel, scientific and environmentally friendly.

An integral roof suspended ceiling component comprises a structural frame beam and at least two pairs of fixed connection pieces between the structural frame beam and a roof, wherein the structural frame beam is formed by combining a pair of longitudinal beams and a cross beam through connecting pieces, and the installation position of the structural frame beam relative to the roof can be properly adjusted within three-dimensional space. Each fixed connection piece between the structural frame beam and a roof top board is composed of at least four sets of combined hanging pieces. Each set of combined hanging piece comprises a sliding screw, a fixed board, an adjusting gasket, a first adjusting and locating nut, a second adjusting and locating nut, a screw rod, a first fixing nut and gasket, a pressing board of the structural frame beam, a hooking piece of the structural frame beam and a second fixing nut and gasket from top to bottom, wherein the sliding screw, the fixed board, the adjusting gasket, the first adjusting and locating nut, the second adjusting and locating nut, the screw rod, the first fixing nut and gasket, the pressing board of the structural frame beam, the hooking piece of the structural frame beam and the second fixing nut and gasket are sequentially connected. The structural frame beam and the roof top board are connected only through the four combined hanging pieces instead of any keel, a suspended ceiling board and the structural frame beam can be connected very conveniently, so that installation processes are reduced, installation time is shortened, labor intensity is relieved, working period is shortened, and the probability of punching through floors is lowered to the maximum extent.

The invention discloses a Dy monomolecular magnetic material and a preparation method thereof, relating to a monomolecular magnetic material and a preparation method thereof and aiming at solving the problems that the existing monomolecular magnetic material has an unstable structure and the preparation method is complicated and low in yield. The expression of the Dy monomolecular magnetic material is [Dy(nma)(NO3)2(DMSO)].CH3OH, the structural formula is as shown in the specification. The preparation method comprises the following steps: mixing dichloromethane, methanol and dimethyl sulfoxide, to obtain a mixed solvent; then adding dysprosium nitrate, histamine dihydrochloride, potassium hydroxide and 2-formyl-8-hydroxyquinoline into the mixed solvent, stirring and reacting for 12h-24h, and then filtering to obtain a filtrate; and dropwise adding ether into the filtrate, and standing to obtain the Dy monomolecular magnetic material. The yield of the prepared Dy monomolecular magnetic material is 70%-72%. The invention provides a Dy monomolecular magnetic material and a preparation method thereof.

The invention relates to the technical field of office supplies, in particular to an umbrella rainwater recycling device for an office. The umbrella rainwater recycling device comprises a shell, a water outlet pipe is communicated with the lower right end of the shell, a waterwheel is arranged below the water outlet pipe, a supporting frame is rotationally connected to the waterwheel, an electricity generator is arranged on the waterwheel, a wire is electrically connected to the bottom end of the electricity generator, a charging base is electrically connected to the other end of the wire, a power bank is arranged inside the charging base, a drainage plate is arranged at the right end of a supporting leg, the left and right sides of the drainage plate are fixedly connected to the supporting leg and the supporting frame, and a liquid accumulation bottle is arranged at the bottom of the lower right end of the drainage plate. By arranging the waterwheel, the electricity generator, the charging base and the power bank, the waterwheel can be pushed by means of the gravitational potential energy of rainwater on an umbrella to rotate, and therefore the electricity generator is drive for charging the power bank; the device is novel in design and concept, scientific in design and worthy of being used and popularized and has the huge economic benefit and wide market prospect.

The invention discloses a heavy duty plate feeder capable of realizing smooth transmission, and relates to material transportation and transshipment equipment. The heavy duty plate feeder comprises a drive shaft, a sealed chain belt wound on the drive shaft and a tension shaft, and chain supporting rollers for supporting the chain belt, wherein a drive chain unit is arranged on two sides of each chain unit component of the chain belt; a transverse H-shaped bearing plate is fixed in the middle; the drive chain unit is connected with the transverse H-shaped bearing plate; the sealed chain belt is engaged with a chain wheel of the drive shaft by the drive chain unit; guide wheels engaged with the chain belt are arranged at the position, corresponding to the chain wheel, of two ends of the tension shaft; the chain supporting rollers are arranged along equipment longitudinally in five lines; the chain supporting rollers in the two outer lines are chain belt driving rollers which are provided with ribs and arranged below the drive chain unit; and the chain supporting rollers in the three inner lines are chain belt bearing rollers arranged below the transverse H-shaped bearing plate. The heavy duty plate feeder has the advantages of effectively solving the problems of shock vibration and deviation of the chain belt in the transmission process, reducing wearing of the chain belt, prolonging operation period and improving production efficiency of equipment.

A device for betelnut sheet entering into mould wherein the chassis is provided with an oscillating conveyer, the conveying trough end socket of the oscillating conveyer is provided with a plurality of movable supporting boards, which are driven by actuating mechanism controlled by the electrical control box, the front end of the movable supporting board is mounted with a mould entering skewed slot.

The invention relates to the technical field of machines, in particular to a multilayer crushing type dustproof stone crusher. The multilayer crushing type dustproof stone crusher comprises a case. Acrushing bearing sleeve is arranged at the center position in the case. A crushing bearing is arranged at the center position in the crushing bearing sleeve. The center position of the top end of thecase communicates with a feeding hopper. The right side of the top end face of the case is fixedly connected with a water tank. A water faucet is arranged at the bottom end of the left end face of thewater tank. The center position of the bottom end in the case is fixedly connected with a motor. The bottom end of the motor is fixedly connected with a gasket. The tail end of a motor spindle is fixedly connected with the crushing bearing. The bottom end of the crushing bearing is fixedly connected with a first gear. In the multilayer crushing type dustproof stone crusher, through the arrangement of the gasket, the running-in distance between the crushing bearing and the crushing bearing sleeve can be changed by changing the number of the gasket, and therefore the aim of controlling the sizeof crushed stone particles is achieved, and the huge cost brought by machine replacement is avoided.

The invention relates to the technical field of shipping of a ship, in particular to a ship bottom cleaning device for shipping of a ship. The ship bottom cleaning device for shipping of the ship comprises a cleaning device and a base, wherein the top of the base is fixedly connected with a supporting column; the top end of the supporting column is fixedly connected with a cross plate; the top endsurface of the cross plate is fixedly connected with a supporting rod; the top end of the supporting rod is fixedly connected with a ball and socket joint; the top end of the ball and socket joint isfixedly connected with a connecting rod; a loop bar is arranged on the outer side of the supporting rod; the top end of the loop bar is in sleeve connection with a sleeve; a compression spring is arranged on the outer side of the loop bar; and the top end of the sleeve is fixedly connected with a connector. In the ship bottom cleaning device for shipping of the ship, by arrangement of the ball and socket joint, the connector, the loop bar, the sleeve and the compression spring, the irregular bottom end of the ship can be mechanically cleaned, the cleaning efficiency is ensured, and the cleaning efficiency is further ensured. The ship bottom cleaning device for shipping of the ship is novel in design concept and scientific in design, has huge economic benefit and extensive market prospect,and is worthy of being popularized and used.

The invention relates to a straight-way solar energy heat exchange heat collector using solar energy as a heat source and belongs to the technical field of medium and high temperature solar energy utilization. The straight-way solar energy heat exchange heat collector comprises a straight-way transparent tube, a multi-curved face metal heat exchange tube, heat exchange tube end enclosures, a metal expansion joint, adsorbent storage rings, concave spacing sealing rings, metal snap rings, a working medium channel pipe, metal cover plates, sealing fixed plates, card type shield covers and vacuum connectors, wherein the two ends of the multi-curved face metal heat exchange tube are welded and fixed with the heat exchange tube end enclosures; the working medium channel pipe is connected with the heat exchange tube end enclosures; the multi-curved face metal heat exchange tube is provided with the metal expansion joint; the working medium channel pipe passes through the center of the metal cover plate to form an multi-curved face metal heat exchange tube component which is integrally sleeved in the straight-way transparent tube and the two ends of which are sequentially provided with the adsorbent storage rings, the concave spacing sealing rings and the metal snap rings; the sealing fixed plates seal and fix the metal snap rings and the metal cover plates; the two ends of the straight-way transparent tube are provided with the card type shield covers; and the vacuum connectors are fixed on the card type shield covers.

The invention discloses a data mining-based elevator accident pre-warning and forecasting system. The system comprises a data import module, a data mining module and a data export module, which are operated on a Hadoop platform, wherein the data import module is used for importing original data in an elevator remote supervision system database SQLServer to serve as a data source of data mining, and storing the data source; the data mining module is used for carrying out data mining on the stored data source; and the data export module is used for exporting a result obtained by the data mining into the elevator remote supervision system database SQLServer for subsequent analysis. The data mining-based elevator accident pre-warning and forecasting system is capable of carrying out clustering analysis and association rule mining on elevator data, so that the sufficiency of data mining is ensured, the efficiency of data mining is improved, and powerful data support is provided for the pre-warning and forecasting of elevator accidents; and the system is suitable for elevator monitoring and elevator rescue.

The invention relates to the technical field of power equipment, in particular to an anticorrosion protective housing for power equipment, comprising a box body; a first motor is fixedly connected tothe center of the top end of the box body, a sleeve that is horizontally arranged is fixedly connected to the center of the top end of the first motor, a socket rod is slidably connected inside the sleeve, a second motor is fixedly connected to the left end of the socket rod, the left end of the socket rod is sleeved with a tension spring, the left end of the tension spring is fixedly connected with the second motor, the tail end of a spindle of the second motor is fixedly connected with a rotary shaft vertically arranged, and a brush is fixedly connected to the outer side of the rotary shaft.The first motor, the socket rod, the second motor and the brush herein can clean the outer surface of the box body so that the box body is corroded by foreign matters at reduced speed; the anticorrosion protective housing is novel and scientific in design, has great economic benefit and a good market prospect and is worthy of popularization and use.

The utility model relates to a high temperature polymer magnetic material. The ferrocene-based polymer forms a three-dimensional atom coordination structure with the rare earth metal atom ligand at the ligand group of the ferrocene-based polymer molecular chain. The utility model is a high temperature polymer magnetic material of ferrocene-based rare earth metal with stable magnetic properties under room temperature. The high temperature polymer magnetic material molecule of the utility model is novel in design and easy in manufacturing. The saturation magnetization of the high temperature polymer magnetic material is up to 0.20-0.48 emu per gram, the coercivity is 59-90 Oe, the remanence is 0.004 emu per gram to 0.040 emu per gram. The inner temperature is above 398K. The utility model discloses the manufacturing method.

The invention relates to the technical field of food packaging, in particular to a packing machine sealing device. The packing machine sealing device comprises a box body. The inner side of the bottomend face of the box body is sequentially and fixedly connected with a fixing rack, a fixing rod and a supporting rod from left to right. The bottom end of the fixing rack is fixedly connected with amotor, and the top end of the motor is fixedly connected with a driving gear. The fixing rod is connected with a disk in a rotating mode, and the bottom end face of the disk is fixedly connected witha driven gear. The driving gear is engaged with the driven gear. A first fixing block is arranged at the bottom end of the driven gear and is further fixedly connected with the fixing rod. The upper end face of the disk is fixedly connected with a connecting rod. A turntable and a sheave which are arranged up and down are connected to the supporting rod in a sliding mode. Due to the fact that thepacking machine sealing device is provided with the motor, the disk, the sheave and the turntable, a plurality of milky tea cups can be heat-sealed at the same time. The design is novel in conceptionand scientific, huge economic benefits and broad market prospects are achieved and the packing machine sealing device is worthy of application and popularization.

The invention discloses an automatic liftable urinal. The urinal comprises a urinal body and a solenoid valve control flushing of the urinal and further comprises a lifting mechanism, a sensor, a power system and a controller. The lifting mechanism is used for enabling the urinal body to move vertically along the longitudinal direction; the sensor is arranged above the urinal body and used for sensing signals of users and transmitting the signals to the controller; the power system is used for driving the lifting mechanism to work; the controller is used for controlling the solenoid valve and operation of the power system. According to the automatic liftable urinal, intelligent flushing and automatic lifting functions of the urinal are achieved, usage of the urinal is humanized, and the urinal is suitable for different requirements of users.

The invention relates to the technical field of environmental protection, in particular to a portable sewage sample collecting device which comprises an electric telescopic rod and a rotary shaft. A first sampler is rotationally connected with the right end of the electric telescopic rod by the rotary shaft, second samplers are slidably connected with the right side of the first sampler, a third sampler is slidably connected with the right end of the corresponding second sampler, supports are fixedly connected with the top of the first sampler, pulleys are rotationally connected with the topsof the supports, ropes are rotationally connected onto the pulleys, a sampling tube cover is fixedly connected with the other end of each rope, and extension springs are fixedly connected with two sides of each sampling tube cover. The portable sewage sample collecting device has the advantages that a telescopic and foldable sampling device comprises the electric telescopic rod, the rotary shaft,the first sampler, the second samplers and the third sampler, and accordingly the portable sewage sample collecting device is convenient to carry; the portable sewage sample collecting device in the design is novel in concept and scientific in design, has a huge economic benefit and an extensive market prospect and is worthy of being popularized and utilized.

The invention relates to the technical field of waste gas treatment and in particular relates to a waste gas treatment device for a chemical reaction kettle. The waste gas treatment device comprises areaction kettle, wherein the bottom end of the right end face of the reaction kettle is fixedly connected with a base; an air inlet in the bottom end face of the reaction kettle is communicated witha condenser pipe; an air outlet in the top end face of the reaction kettle is communicated with an air outlet pipe; an air blower is fixedly connected to the left end face of the reaction kettle and communicated with the condenser pipe; a first motor and a treatment box arranged on the left and right sides are fixedly connected to the top end face of the base; the other end of the air outlet pipeis communicated with the treatment box; the tail end of the spindle of the first motor is fixedly connected with a gear; a fixing rack is arranged at the top end of the first motor; and a rack is arranged on the inner side of the fixing rack. According to the waste gas treatment device disclosed by the invention, due to the arrangement of the condenser pipe, gases blown out by the air blower are cooled, and the temperature difference between gases in the reaction kettle and the gases blown in is increased, so that the waste gases in the reaction kettle are compressed out and the waste gases inthe reaction kettle can be discharged to the greatest degree.

The invention discloses an armored sludge pipe design method and a sludge pipe thereof, and belongs to the technical field of dredging engineering equipment. The technical scheme includes that the armored sludge pipe design method includes overall design for an armored pipe body and flange plates at two ends of the pipe body and specific design for parts. The armored sludge pipe design method is characterized in that the technical requirement that the curvature of the armored sludge pipe is larger than or equal to 35 degrees is met, a plurality of armored pipe body conical inner pipes and armored pipe body outer pipes are connected in a bolt-on manner to form an armored pipe body unit, and the armored sludge pipe comprises the armored pipe body unit and the flange plates at the two ends. Compared with the prior art, the armored sludge pipe design method has the outstanding substantial advantages and the remarkable progress that the technical scheme is reliable, the bending requirement for adjusting the direction of the sludge pipe is met, the abrasion resistance of the sludge pipe can be closer to that of a metal composite sludge pipe, and the service performance of the metal sludge pipe is comprehensively improved.

The invention provides a series type fresh air system used for classrooms. A purifying system is mounted between a front-end classroom (1) and a tail-end classroom (2); a first fresh air unit is mounted on a rear wall of the front-end classroom (1); the first fresh air unit comprises a fan unit I (5), an auxiliary heating unit (6) and a filter unit I (7); an air inlet of the fan unit I (5) communicates with the outdoor, and an air outlet of the fan unit I (5) communicates with the auxiliary heating unit (6); the auxiliary heating unit (6) communicates with the filter unit I (7); a first ventilation hole (8) is formed in the front wall of the front-end classroom (1); a second fresh air unit is mounted on the rear wall of a second classroom (9); and the second fresh air unit comprises a fan unit II (10), a first heat exchange unit I (11), a fan unit III (12) and a filter unit II (13). The fresh air system is not used in single classroom, and is used by acting between adjacent classrooms, and an air return pipeline does not need to be independently laid in each classroom, so that time and labor are saved, mounting and using cost is greatly reduced, use threshold is low, and energetic popularization is facilitated.

The invention relates to the technical field of textile machines, in particular to a collecting device which collects cloth neatly and is used for a textile machine. The collecting device comprises abox. The left end face of the box is provided with a feeding opening. The cloth is arranged in the feeding opening. The bottom end face of the cloth is provided with a collecting box. A transverse rodis arranged over the collecting box. A fixing block is connected to the outer side of the transverse rod in a sliding manner. A first motor is arranged in the fixing block. A first gear is fixedly connected to the tail end of a main shaft of the first motor. A rack is fixedly connected to the bottom end face of the transverse rod. An electric telescoping rod is fixedly connected to the center position of the bottom end face of the fixing block. A fixing plate is fixedly connected to the bottom end face of the electric telescoping rod. According to the collecting device, by means of the arranged collecting box, the transverse rod, the fixing block and the electric telescoping rod, the collecting device can swing back and forth automatically, the cloth can be collected conveniently and neatly, the design concept is novel, the design is scientific, and the collecting device has great economic benefits and wide market prospects and is worthy of being used and popularized.