303results about How to "Improve Flip Effect" patented technology

The invention provides an anti-single-event-upset error checking and correction method for memory, which comprises: (1) receiving K-bit information data from CPU; (2) generating N-bit check data A corresponding to the K-bit information data; (3) storing the K-bit information data and the N-bit check data A to a memory; (4) reading the K-bit information data from the memory and regenerating a N-bit check data B corresponding to the K-bit information data; (5) performing XOR operation on the check data A and the check data B to obtain a corrector; and (6) locating error in the information data and the check data A by the corrector. If one or two bits of data error occurs, the data error is corrected and correct data is outputted; if two bits or testable more than three bits of data error occurs, the information that non-correctable error occurs is prompted. The method has strong error correction ability, simple operation, and one-bit or two-bit error of memory caused by single event effect is effectively corrected.

The invention discloses an anti-single event effect static random access memory unit, which can effectively improve the single event upset resistance of a static random access memory (SRAM) unit and remarkably increase an upset threshold of an SRAM. The SRAM unit is a 14-transistor memory unit, and comprises two access N-channel metal oxide semiconductor (NMOS) transistors and two phase inverters, wherein each phase inverter consists of six metal oxide semiconductor (MOS) transistors. Different from the phase inverters forming the most basic six-transistor unit, the inverter structure of the anti-single event effect SRAM unit regulates a level by the two NMOS transistors as drive transistors, two P-channel metal oxide semiconductor (PMOS) transistors as load transistors and a transmission gate consisting of the PMOS transistor and the NMOS transistor so as to realize the anti-single event upset of the memory unit. The SRAM unit has a relatively simpler structure, and is easy to realize in the designing of a radiation resistant SRAM chip.

The anti-SEU storage cell circuit in an anti-radiation hardening FPGA chip includes two inverters and two transistors. The two inverters are cross connected and realize the adjustment to the resistance values at the source terminals and drain terminals of the two transistors through controlling the grid voltage and substrate potential of the two transistors. The resistance values are not greater than 50 omega or not smaller than 1,000 omega. With respect to inverter design, a resistor is added to the existing circuit consisting of PMOS tube and NMOS tube. The resistor is connected between the drain terminals of PMOS transistor and NMOS transistor. Through adding a resistor into the inverter, the present invention realizes anti-SEU (single event upset) of the storage cell. Moreover, the storage circuit of the present invention has the following advantages: small noise, low power consumption, small area occupied, and easy realization of layout and process in the design of anti-radiation hardening FPGA chip.

The invention discloses a settable and resettable D trigger resisting single event upset, and aims to improve the single event upset resistance of the settable and resettable D trigger. The D trigger comprises a clock circuit, a reset buffer circuit, a main latch, a slave latch and an output buffer circuit, wherein the main latch comprises 14 PMOS (P-channel Metal Oxide Semiconductor) tubes and 14 NMOS (N-Mental-Oxide-Semiconductor) tubes; the slave latch comprises 10 PMOS tubes and 10 NMOS tubes; both the main latch and the slave latch adopt bimodule redundant reinforcement; and in the main latch and the slave latch, C2MOS circuits are also improved, that is, pull-up PMOS tubes and pull-down NMOS tubes in redundant relation in each C2MOS circuit are separated.. The D trigger has strong single event upset resistance, is suitable for standard cell library for a reinforced integrated circuit resisting single event upset, and is used in the fields of aviation, aerospace, and the like.

The invention discloses a clothes dryer and a clothes drying method. The clothes dryer comprises a clothes drying drum which is provided with an air inlet and an air outlet. A lifting structure is arranged on the inner wall of the clothes drying drum and comprises at least two lifting structure bodies which are arranged on the inner wall of the clothes drying drum in an inclined mode. The lifting structure bodies each inclines relative to the length direction of the clothes drying drum. The inclination directions of every two adjacent lifting structure bodies are opposite. By means of the clothes dryer and the clothes drying method, the problems of winding and rolling in the rolling and drying process of large clothes can be solved, and the large clothes can be dried in a loose mode and evenly dried, and drying is thorough.

The invention provides a vacuum rotary kiln. A hot air pipe, spiral guide plates and T-shaped lifting boards are mounted in the vacuum rotary kiln; one T-shaped lifting board is mounted between each two spiral guide plates; the hot air pipe comprises a kiln head center main air pipe, a kiln tail center main air pipe and branch air pipes; the branch air pipes are annularly distributed between the kiln head center main air pipe and the kiln tail center main air pipe; the branch air pipe located at the center is communicated with the kiln head center main air pipe and the kiln tail center main air pipe; the both ends of the other branch air pipes are gathered with the kiln head center main air pipe and the kiln tail center main air pipe; and 4-8 fins are respectively welded on the outer wall of the branch air pipe at the center uniformly. A process of roasting refractory gold comprises the steps of preparing sulfuric acid by using SO2 after vacuum dehydration, desulfuration and dearsenification. The vacuum rotary kiln is used for roasting in a metallurgy process, so that heat of mineral itself can be sufficiently used. Thus, the vacuum rotary kiln has the advantages of uniform material heating, less powder dust and high capability.

The invention discloses a single event upset resistant synchronously resettable D flip-flop, aiming at improving the single event upset resistance of a resettable D flip-flop. The D flip-flop is composed of a clock circuit, a master latch, a slave latch, a first inverter circuit and a second inverter circuit, wherein the master latch is composed of 12 PMOS (P-channel Metal Oxide Semiconductor) FETs (Field Effect Transistors) and 12 NMOS (N-channel Metal Oxide Semiconductor) FETs, the slave latch is composed of 10 PMOS FETs and 10 NMOS FETs, duplication redundant reinforcement is performed on the master latch and the slave latch, and the C2MOS (Clocked Complementary Metal Oxide Semiconductor) circuit structures of the master latch and the slave latch are improved, i.e. a pull-up circuit and a pull-down circuit in the mutually redundant C2MOS circuits are separated from the master latch, and a pull-up PMOS FET and a pull-down NMOS FET in the mutually redundant C2MOS circuits are separated from the slave latch. The single event upset resistant resettable D flip-flop disclosed by the invention has strong single event upset resistance, is suitable for a standard cell library of a single event upset resistance reinforced integrated circuit, and is applied to the fields of aviation, aerospace and the like.

The invention relates to an impeller for a washing machine and a washing machine using the impeller. The impeller for the washing machine comprises a big impeller which is arranged on the bottom of an inner cylinder of the washing machine, wherein the big impeller is connected with a driving device of the washing machine; a small impeller is arranged in the center of the big impeller; and the small impeller rotates and performs up-down vertical reciprocating motion relative to the big impeller through a linking mechanism. When more washing loads are washed, the small impeller can achieve an auxiliary washing effect, so that the cleaning rate is improved. The small impeller can also perform up-down vertical reciprocating motion when rotating so as to scatter load cloth, so that the problem about the tangling when the loading capacity is high is well solved, and the cleaning effect when the loading capacity is high is improved; meanwhile, the turning effect of the loads in the washing process is remarkably improved.

The invention discloses a low-cost and high-reliability satellite-borne single-machine multi-chip SRAM type FPGA on-orbit reconstruction system. One chip is selected from a plurality of to-be-reconstructed FPGAs as a reconstruction interface FPGA, and an external reconstruction interface circuit is constructed in the reconstruction interface FPGA; The external reconfiguration interface circuit isused for receiving reconfiguration user function configuration data and a reconfiguration instruction which are injected on the ground, generating a reconfiguration telemetry data packet from the received reconfiguration user function configuration data and the received reconfiguration instruction, sending the reconfiguration telemetry data packet to the on-orbit reconfiguration control circuit, and downloading reconfiguration telemetry information on a satellite to the ground; The reconfiguration interface configuration data memory PROM is used for storing reconfiguration interface function configuration data of the reconfiguration interface FPGA; Wherein different spaces are set in the FLASH and correspond to the FPGAs to be reconstructed respectively, and the FLASH is used for pre-storing original user function configuration data of the FPGAs to be reconstructed or storing reconstructed user function configuration data used during on-orbit reconstruction; The on-orbit reconstructioncontrol circuit is responsible for communication with the reconstruction interface circuit, storage of reconstruction configuration data and loading and refreshing of the FPGA to be reconstructed according to control of a ground remote control instruction.

The present invention relates to a method for forming a multilayer coating film. The invention provides a method for forming a multi-layer coating film with excellent uniformity, image clarity and water resistance by adopting a 3C1B system, comprising continuously coating a first colored paint, a water-based second colored paint and a coating object on a coated object The clear lacquer is hardened by simultaneously baking the first colored coat, the second colored coat and the clear coat thus formed.

The invention discloses a cement sand agitation device for municipal road pavement. The device comprises a first motor, an agitation chamber, a feed opening, a second rotating shaft, a third rotatingshaft, a bottom plate, a turntable and a second motor, wherein a feed hopper is arranged on the left of the upper end of the agitation chamber; a fixed plate is fixedly arranged on the right of the feed opening; the first motor is fixedly connected with the right side of the fixed plate; the output shaft of the first motor is fixedly connected with the third rotating shaft; the second rotating shaft has a hollow structure, the first rotating shaft extends into the cavity of the second rotating shaft; two transmission devices are arranged on the first rotating shaft, and comprise bevel gears Aand bevel gears B which are meshed with the bevel gears A and are symmetrically arranged; a connecting rod is hinged on the right side of the agitation chamber, and the other end of the connecting rodand the eccentric position of the turntable are in rotating connection. The cement sand agitation device is simple in structure, can realize agitation in horizontal and vertical directions, has highagitating efficiency, can be used for greatly improving the agitation effect, and is worthy of popularization.

The invention discloses a signal event upset resistance D trigger capable of being set and reset, and is aimed at raising signal event upset resistance capability of the signal event upset resistance D trigger capable of being set and reset. The trigger comprises a clock circuit, a reset buffer circuit, a main latch register, a secondary latch register and an output buffer circuit. The main latch register is composed of 14 PMOS tubes and 14 NMOS tubes. The secondary latch register is composed of 10 PMOS tubes and 10 NMOS tubes. Both the main latch register and the secondary latch register are subjected to duplication redundancy reinforcement, and a C2MOS circuit in the main latch register is improved, i.e., a pull-up PMOS tube and a pull-down tube which are mutually redundant in the C2MOS circuit are separated. The trigger in the invention has strong signal event upset resistance capability, is suitable for a standard cell of a signal event upset resistance reinforcement integrated circuit, and is applied to the fields of aviation, spaceflight and the like.

The invention discloses a triplication redundancy D trigger capable of realizing self error detection and single event upset prevention. The trigger comprises a first clock circuit, a first main latch register, a first secondary latch register, a second clock circuit, a second main latch register, a second secondary latch register, a third clock circuit, a third main latch register, a third secondary latch register, a selector circuit, a first inverter circuit, a second inverter circuit and an error detection control circuit. The trigger is on the basis of a traditional reinforced triplication redundancy D trigger, output of three basic triggers in the triplication redundancy structure is controlled through the designed error detection control circuit, that correct output can be determined by a selector at any time is guaranteed; when output upset occurs in one of the three basic triggers, the one with output upset is instantly recovered through the error detection control circuit, upset accumulation can be avoided, and single event upset caused upset accumulation can be avoided, and single event upset prevention capability is further improved.

The invention discloses a linkage production method of a color-printing corrugated case. The linkage production method comprises the following steps which are implemented according to the sequence on a production line: mounting surface paper and bottom paper into a corrugated paperboard; carrying out microwave drying on the corrugated paperboard; carrying out air cooling drying on the corrugated paperboard; overturning the dried corrugated paperboard; and carrying out mold cutting and molding on the corrugated paperboard in a flat-pressing and flat-mold cutting machine, and cleaning wastes. The invention further discloses a linkage production line for implementing the method; and the linkage production line comprises a paper mounting machine, a microwave drying machine, an air cooling drying machine, a paperboard overturning machine, a paper feeding mechanism and the flat-pressing and flat-mold cutting machine, which are arranged in sequence; and the production line can control communication and speeds of single unit equipment to be synchronized through a central electric control system. With the adoption of the method and production line disclosed by the invention, the production efficiency of the color-printing corrugated case is improved and the production cost is reduced.

The invention discloses a roller type garbage incinerator and a preheating combustion method, belonging to garbage incineration equipment and technology used in the technology of solid waste treatment. A roller fire grate serves as a combustion device and is combined with a water cooled wall, a hearth, a superheater, an economizer, an air preheater and the like to form the technology and the device capable of processing garbage and recovering heat energy thereof. The roller fire grate is characterized in that the front part of the roller fire grate is provided with a preheating and drying grid which can fully preheat and dry garbage and is favorable for garbage to fully combust on the roller fire grate. The roller fire grate is divided into a drying and combusting section and an after-combustion section, wherein the drying and combusting section is aslant arranged in the stair-stepping mode, and the after-combustion section is arranged horizontally. The side wall of the hearth is provided with an oxygen-enriched air nozzle; according to the conditions of garbage heat value, moisture content and the like, oxygen-enriched air is introduced into the hearth by the oxygen-enriched air nozzle for supporting combustion to improve the garbage combustion temperature.

The invention discloses a turnover pneumatic claw, which comprises a motor I, a rotating plate, a cylinder I, a cylinder II, a fixed baffle I, a motor II, a claw I, a cylinder III, a cylinder IV, a fixed baffle II, a motor III and a claw II, wherein a shaft of the motor I is connected with the rotating plate through a key; the motor II and the claw I are installed in the manner of interference fit; the motor III and the claw II are installed in the manner of interference fit; a rod of the cylinder II is connected with the fixed baffle I in a welding manner; the rod of the cylinder IV is connected with the fixed baffle II in a welding manner; the other linkage is threaded connection; the rod of the cylinder I and the rod of the cylinder III are used for driving the claw to move up and down; the rod of the cylinder II and the rod of the cylinder IV can move left and right, and thus the claw can open and close; the claw rotates horizontally under the action of the rotation of the motor I; and the claw turns over under the action of the synchronous rotation of the motor II and the motor III. The turnover pneumatic claw has the advantages of reliable control, excellent moving performance, excellent turnover property, wide developing prospect, and the like.

The invention relates to a cookware moving device and cooking equipment applying the same, wherein the cookware moving device comprises a bracket, an executing mechanism, a drive device and a switching mechanism, wherein the switching mechanism comprises a switching drive device and a connecting structure, the connecting structure is movably arranged on the bracket, and the connecting structure drives partial or integral executing mechanism to rotate and switch a moving plane under the drive of the switching drive device. The cookware moving device has simple and compact structure, is easy to realize integral layout, realizes the movement on different moving planes by using the same mechanism, can realize cookware shaking operation and cookware turning operation, more importantly can be switched between the cookware shaking operation and the cookware turning operation at any moment to ensure that the turning effect of the cookware is better and the dish quality is further improved. Meanwhile, the cooking equipment is suitable for making much dish, and better meets the demands of people.

The invention discloses a signal event upset resistance D trigger capable of being set and is aimed at raising signal event upset resistance capability of the signal event upset resistance D trigger capable of being set. The trigger comprises a clock circuit, a main latch register, a secondary latch register, and an output buffer circuit. The main latch register is composed of 12 PMOS tubes and 12 NMOS tubes. The secondary latch register is composed of 12 PMOS tubes and 12 NMOS tubes. Both the main latch register and the secondary latch register are subjected to duplication redundancy reinforcement, and C2MOS circuits in the main latch register and the secondary latch register are improved, i.e., a pull-up PMOS tube and a pull-down tube which are mutually redundant in the C2MOS circuit are separated. The trigger in the invention has strong signal event upset resistance capability, is suitable for a standard cell of a signal event upset resistance reinforcement integrated circuit, and is applied to the fields of aviation, spaceflight and the like.

The invention discloses a washing control method and a washing machine. The washing control method comprises a washing step, a rinsing step and a dewatering step, wherein the washing steps is used for providing washing water to control a motor to operate at predetermined rotation time and stop time to wash and detecting the height of a water level in a bucket in real time to supplement water correspondingly; the rinsing step is used for discharging the washing water to control the motor to dewater at a dewatering period that the stop time is longer than the rotation time and providing rinsing water to rinse; the dewatering step is used for discharging the rinsing water to control the motor to operate to dewater at a rotation stop period that the stop time is longer than the rotation time. According to the method and the machine, the water is automatically supplemented during washing so as to prevent the influence of reduced water quantity on the washing effect; the rubbing time of clothes can be prolonged by controlling the motor to operate at the predetermined rotation time and stop time, so that the clothes have a better rollover effect; the motor is fully cooled through the dewatering period that the stop time is longer than the rotation time so as to reduce the temperature of the motor.

The invention discloses a chemical raw material crushing and refining device, and relates to the technical field of chemical engineering. The device comprises a crushing box, a plurality of pairs of crushing blades are fixed to the side wall of a driven shaft at equal intervals, a lifting mechanism used for driving a bearing net plate to vertically ascend and descend is arranged on the crushing box, a crushing mechanism used for impacting and crushing chemical raw materials is arranged on the lifting mechanism, and a discharging hopper is vertically installed at the bottom of the crushing box.Rotation of the driven shaft and a driving shaft is achieved through an arranged transmission mechanism. The driven shaft drives the crushing blades to rotationally crush the chemical raw materials;through the arrangement of the lifting mechanism, materials can be vertically and repeatedly circulated; under the repeated cutting and crushing action of the crushing blades in the circulating process, the arranged lifting mechanism can drive the bearing net plate to vibrate up and down, the turning action of the raw materials is promoted, the raw material crushing effect is more sufficient, arranged extrusion blocks can repeatedly impact and crush the chemical raw materials, and the refining efficiency of the raw materials is greatly improved.

The invention discloses a stamping device for black sesame processing. The stamping device comprises a base, a bracket, a stamping bucket, a hammer stamping mechanism and a shock absorption mechanism,wherein the bracket is fixedly mounted at the upper end of the base; the stamping bucket is arranged on the inner side of the bracket; the hammer stamping mechanism is arranged above the stamping bucket and comprises a stamping hammer, an L-shaped rod, a second spring, an extension rod C and a rack plate; a worm gear is arranged on the right side of the hammer stamping mechanism and connected with a worm arranged on the right side; a rotating motor is further fixedly mounted on the inner side of the bracket; a bevel gear A is fixedly mounted on an output shaft of the rotating motor; and the shock absorption mechanism is symmetrically arranged at the lower end of the base. The device is novel in design, improves black sesame stamping efficiency and can ensure that black sesame in the stamping bucket can be hammered and stamped; a hammer stamping effect of the black sesame is improved; the automation degree is high; the labor is saved; at the same time, the adopted shock absorption mechanism can effectively prolong the service life of the device; and the device is high in practicability and worthy of popularization.

The invention provides a feed dryer, and relates to the field of feed processing. A feed drying box comprises a feeding plate, a fixed cylinder, a rotating cylinder, a mounting frame, a driving motor and an air blower; the feeding plate is rotationally connected with the outer wall of the top end of the fixed cylinder; the fixed cylinder is movably connected with the rotating cylinder; a mounting groove is formed in the outer wall of one side of the rotating cylinder; a movable plate is arranged on the inner wall of the mounting groove; the driving motor is arranged on the outer wall of one side of the mounting frame; an output shaft of the driving motor is connected with a rotating rod through a coupler; one end of the rotating rod is fixedly connected with the outer wall of one side of the rotating cylinder; the air blower is arranged on the outer wall of the other side of the mounting frame; and an air injection mechanism is arranged on the outer wall of one end of the rotating cylinder. According to the feed drying box, pop-up blocks in swing plates can adjust the size degree of feed cakes, so that abrasion to common feed can be reduced, the damage rate of the feed in the drying process is reduced, and the production quality is improved.

The invention discloses a single event upset resistant settable scanning structure D trigger, and aims to improve the single event upset resistance of the single event upset resistant settable scanning structure D trigger. The trigger consists of a clock circuit, a scanning control buffer circuit, a master latch, a slave latch and an output buffer circuit; the master latch consists of eighteen P-channel metal oxide semiconductor (PMOS) tubes and eighteen N-channel metal oxide semiconductor (NMOS) tubes; the slave latch consists of twelve PMOS tubes and twelve NMOS tubes; both the master latchand the slave latch are subjected to dual-mode redundancy reinforcement; and C2MOS circuits in the master latch and the slave latch are improved, namely separated into pull-up circuits and pull-down circuits in mutually redundant C2MOS circuits. The single event upset resistant synchronously-settable scanning structure D trigger has strong single event upset resistance, is suitable for a standardcell library of a single event upset resistant reinforcing integrated circuit, and is applied in the fields of aviation, spaceflight and the like.

The invention discloses a storage single event multiple bit upset fault-tolerance method and circuit. The storage single event multiple bit upset fault-tolerance method comprises the steps of: when writing data into a storage, encoding input data A<15:0>, generating a check bit P<5:0>, and inputting the check bit P<5:0> and the corresponding input data A<15:0> into the storage; and when reading out data from the storage, respectively reading out storage data A'<15:0> corresponding to the input data A<15:0> and a check bit P'<5:0> corresponding to the check bit P<5:0>, carrying out decoding, generating an error correcting code S<5:0>, and according to the error correcting code S<5:0>, carrying out error correction on the storage data A'<15:0> to obtain final data D<15:0>. According to the storage single event multiple bit upset fault-tolerance method and circuit disclosed by the invention, any two adjacent bits of error data can be corrected; compared with a conventional expansion hamming code, the storage single event multiple bit upset fault-tolerance method and circuit nearly double resistance of the storage to single event multiple bit upset.

The present invention is applied to the D trigger technology field, and provides an anti-single-event upset D trigger. The D trigger comprises a clock signal input circuit, a main latch buffer circuit, a slave latch buffer circuit, a main latch and a slave latch. The main latch and the slave latch are both dual-mode redundant reinforcing latches. Compared to the prior art, buffer circuits are added at the fronts of the main latch and the slave latch to improve the anti-single-event upset capacity of the D trigger, the main latch and the slave latch are subjected to dual-mode redundant reinforcing to separate into pull-up PMOS tubes and pull-down NMOS tubes, which are mutually redundant, in C2MOS circuits so as to avoid the feedback loop caused by the single-particle transient pulse in the slave latch, the C2MOS circuits in the main latch and the slave latch circuits are improved, and the control of the circuits through clock signals is realized through the CMOS transmission gate so as to further improve the anti-single-event upset capacity of the D trigger.

The invention discloses an anti-single-particle irradiation reinforcement circuit of a CMOS (Complementary Metal-Oxide-Semiconductor) integrated circuit, which comprises a logic gating circuit (100) which is subjected to SEU (single event upset) easily and a redundancy logic gating circuit (101), wherein the logic gating circuit (100) and the redundancy logic gating circuit (101) share one input end, a first diode (102) and a second diode (103) are connected between the output end of the logic gating circuit (100) and the output end of the redundancy logic gating circuit (101), and the conducting directions of the first diode (102) and the second diode (103) are opposite. The anti-single-particle irradiation reinforcement circuit of the CMOS integrated circuit conducts anti- irradiation reinforcement on the sensitive logic gating circuit in the CMOS integrated circuit, strikes an average between the area and speed of the integrated circuit, and obviously improves the anti-SEU level of the CMOS integrated circuit.

The invention relates to a tea binding strip machine comprising a frame, a power plant, a wok stand and a pot body, and a heat device; a tea outlet linkage door is arranged at one side of the pot body; the pot body is formed by a plurality of pot slots with U-shaped cross section; a rigid raised line is arranged on the inner wall of each pot slot; the cross-sectional lower part of the pot slot is formed by connecting two semi-circular arcs with different radius; the width of the pot slot is less than the length of travel of the reciprocating movement of the pot slot; the angle between the plane of the center line of the pot slot and the moving plane is 70 DEG C to 90 DEG C. The wok stand is positioned at four sets of support wheel components and is implemented in a rolling straight line reciprocating movement under the drive of a drive mechanism; a pot body lifting mechanism is arranged on the wok stand which relatives to the linkage door. The invention can realize the purpose on overturn and rotation, fierce collision, no groove jumping and good strip binding effect comprehensively. In addition, a non-thermal conduction handle is changed into the pot body lifting mechanism, thereby the time and labor are saved and the efficiency is high; a sliding friction pair is changed into a rolling motion pair, so that the factor on affecting the quality of tea because of the spatter of the lubricating oil can be eliminated.

The invention discloses an FPGA circuit and a configuration file processing method. In one embodiment, the FPGA circuit comprises a configuration memorizer, a hardware ECC decoder and a single event upset controller. The configuration memorizer is used for storing FPGA configuration files, and the configuration files comprise configuration data and ECC codes; the hardware ECC decoder corrects and detects the configuration data through the ECC codes; the single event upset controller is used for reading back the configuration files and checking and correcting the read-back configuration files through the hardware ECC decoder. By means of the circuit, the capacity of an FPGA of supporting single event upset is greatly enhanced, therefore, the FPGA can be applied to the fields of astronavigation or aviation or other fields sensitive to errors of equipment, and therefore wide and great significance is achieved.

The invention relates to a roller dryer and belongs to the field of hot air drying machinery. The roller dryer comprises a lower hopper, a conveyor (3), an upper box (14), a lower box (8), a roller (15), a discharging end fan cover (13) and a main motor (19). A sealing element (7) is adopted for sealing between the upper box (14) and the roller (15), a sealing element (7) is also adopted for sealing between the lower box (8) and the roller (15), a sealing element (7) is also adopted for sealing between the discharging end fan cover (13) and the roller (15), a 2# air outlet pipe (41) is arranged on the upper side of the discharging end fan cover (13), and the lower side of the discharging end fan cover (13) is provided with a discharging port (42). According to the technical scheme, axial air ports at two ends of the roller are sealed, and drying of materials in the roller is achieved mainly by utilizing hot air to heat the roller.