30results about How to "Take protective measures" patented technology

The invention discloses an auto disturbance rejection control method for a space robot with actuator saturation. The method comprises the following steps: arranging a proper transition process for anexpected track and posture of a system by designing a tracking differentiator, and meanwhile, acquiring a differential signal with an expected value to make preparation for subsequent controller design; and designing a sampling expansion state observer by utilizing a discrete output signal, performing real-time estimation on the total non-linear uncertain items which are formed by the state of thespace robot system as well as coupling and external disturbance, and compensating the estimation values of the non-linear uncertain items into an error feedback control rate. By the method, adverse influence on the system by non-linear factors such as internal and external disturbance can be avoided, and the fact that an actuation mechanism implements accurate position and posture control on thespace robot within the saturation range can be guaranteed. The control strategy provided by the invention has a good control effect on the space robot system considering sampling output and with actuator saturation, and can be widely applied to other non-linear systems.

The invention discloses an intelligent transformer substation expansion and modification impact analysis method based on model decoupling. The method comprises the steps that interval information is obtained according to a primary SCD file, when there is no interval information, a virtual primary conducting device is bound with a secondary device by creating voltage classes, intervals and the virtual primary conducting device, and the interval which the secondary device belongs to is obtained; the interval devices which are impacted by expansion are determined, irrelevant intervals and impactintervals are subjected to interval decoupling, and an irrelevant interval model and an impact interval model are obtained; an expansion interval model is added to the impact interval model so as to be combined with the irrelevant interval model after configuration is completed, and a new SCD file is formed through the combination; impact analysis is conducted by comparing the primary SCD file with the new SCD file, and the impact scope is determined. By means of the method, it is achieved that the risks, caused when the SCD file is directly modified traditionally, of error correction or mistake correction of the interval model which has been put into operation are reduced by modifying the specific model configuration file, the safe management and control requirements of the transformer substation expansion SCD file change are met, and the SCD file application complexity is reduced.

The embodiment of the invention discloses an ultraviolet detection method and related products. The method comprises the steps of acquiring the wearing state of wearable equipment based on a proximitysensor, wherein the wearing state is used for indicating whether a user wears the wearable equipment; when the wearing state indicates that the user wears the wearable equipment, detecting ultraviolet intensity of an environment where the wearable equipment is located; and when an ultraviolet intensity acquisition request sent by electronic equipment wirelessly connected with the wearable equipment is detected, sending the detected ultraviolet intensity to the electronic equipment. The ultraviolet detection method and related products provided by the embodiment of the invention, the relatively accurate local ultraviolet intensity data can be provided for the user, and thus the user can take protection measures according to the actual ultraviolet intensity.

The invention relates to the technical field of elevator safety, and discloses an elevator safety internet of things communication rescue system which comprises a central processing unit and an elevator fault detection module. The output end of the elevator fault detection module is electrically connected with the input end of the central processing unit through a wire, and the output end of the central processing unit is electrically connected with the input end of an alarm module through a wire. According to the elevator safety internet of things communication rescue system, when an acceleration sensor detects that an elevator rapidly rises or falls, it is indicated that the elevator has a fault, the position information, the fault reason and the like can be directly sent to an elevatormaintenance mechanism through the alarm module in time, trapped personnel can send a distress signal through one-key distress, rescue time is saved, safety is improved, and a regular overhaul reminding module reminds workers to maintain the elevator in time. The workers can communicate with the trapped personnel through the wireless communication module to soothe the emotion of the trapped personnel.

The invention discloses a dust online monitoring system for industrial dust. The system comprises a dust detection sensor, a data analysis and collection system, a timed control collector, a tail enddata transmission module, a centralized data processing module, a network data transmission module, a website publishing center platform and an alarm device, wherein the timed control collector is connected with a central processing unit by a wire; the central processing unit is bidirectionally connected with the dust detection sensor and the data analysis and collection system through wires; andthe network data transmission module is in signal connection with the website publishing center platform. According to the system, the structure is novel; the design is reasonable, and dust data collection and analysis are optimized; efficient data transmission and security are achieved; the dust can be efficiently detected; unified data management is facilitated, so that the dust can be conveniently operated in the next step; and by use of the dust detection sensor, the dust in gas can be conveniently detected, and the spread speed of the dust in air also can be detected, so that a manager can reasonably control the spread of the dust, and a clean and comfortable environment is provided for operators.

The invention relates to an electric pole protection device.The electric pole protection device is characterized in that an upper protective ring, a lower protective ring, multiple thorn rods hinged to the periphery of the lower protective ring, a thorn rod lifting mechanism and a lifting control mechanism are included; the thorn rod lifting mechanism comprises multiple guide rods, lifting rings and connecting rods, the guide rods are arranged between the upper protective ring and the lower protective ring, the lifting rings are arranged on the outer sides of the guide rods in a sleeving mode and can do lifting motion along the guide rods, one end of each connecting rod is hinged to the corresponding lifting ring, the other end of each connecting rod is hinged to the corresponding thorn rod, and the number of the connecting rods is the same as that of the thorn rods; the lifting control mechanism comprises electromagnets arranged on the upper protective ring and magnets arranged on the lifting rings, and the positions of the electromagnets correspond to those of the magnets.According to the electric pole protection device, the structure is simple, the design structure is reasonable, protection can be effectively supplied to an electric pole, danger generated by improper climbing is avoided, loss brought by the danger is reduced, normal operation of electrical equipment is effectively guaranteed, and the very good social benefit and economic benefit are achieved.

The invention provides an ultrasonic gas meter. The ultrasonic gas meter comprises a shell and a metering module, wherein the metering module is arranged in the shell; a gas inlet and a gas outlet areformed in the shell; the gas outlet end of the metering module is connected with the gas outlet; and the gas inlet is formed in a side surface of the shell. The structural arrangement of the gas meter breaks through the fixed thinking of the structural design of a traditional ultrasonic gas meter; and by changing the arrangement position of the gas inlet, water is prevented from being brought into the shell through the gas inlet.

The invention discloses a mobile phone device with a monitoring function. The mobile phone device comprises a mobile phone body, and the mobile phone body comprises a front shell and a back shell. Theback shell is buckled on the rear side of the front shell; a first mounting groove is formed in the top of one side of the back shell; a small noise detector is mounted in the first mounting groove through a first mounting frame; a second mounting groove is formed in one side of the first mounting groove, a micro formaldehyde detector is mounted in the second mounting groove through a second mounting frame, a rectangular mounting groove is formed in the bottom of the second mounting groove, a micro gas leakage alarm is mounted in the rectangular mounting groove through a third mounting frame,and a rectangular cushioning rubber strip is bonded to the back shell. The mobile phone device with the monitoring function is reasonable in design, simple in structure and suitable for being widelypopularized and used.

The invention provides a field monitoring information processing device. The field monitoring information processing device comprises a user management module, a basic data processing module, a monitoring management module, and a safety management module, wherein the user management module is used for classifying and storing user authorities, and processing the logging and registration of a user; the basic data processing module is used for adding, modifying or deleting one or multiple of preset databases; the monitoring management module is used for uploading monitoring information to a preset server, extracting the monitoring information from the preset servers, grouping the stored monitoring information on the preset servers, and exporting the data information to the outside; the safety management module is used for performing security management on the preset databases by one or multiple of accessing control, identity identification, authentication, auditing, standby restoration and prevention of SQL (structured query language) injection attack. The field monitoring information processing device has the advantages that the protection monitoring information of field animals can be effectively processed, and the security is higher.

The invention discloses a solar house for desert areas. The solar house comprises a wall body, a push window is embedded in the front surface of the wall body, and a roof is fixedly connected to the upper end of the wall body. A supporting plate is hinged to one side of the wall body, a hydraulic cylinder is fixedly connected to the upper end of the roof, and a second solar supporting plate is hinged to one side of the supporting plate. The light intensity of the sunlight on the roof is detected through a photometer, so that the illumination time of the solar energy can be prolonged, and the charging time of a storage battery is shortened. The included angle between a first solar supporting plate and a second solar supporting plate is adjusted through lifting of a hydraulic cylinder to prolong the illumination time of the solar cell panel. A wind speed instrument is used for detecting the outdoor wind power. When the wind power is larger than a set value, a user is reminded to do goodprotection measures. After the wind speed instrument detects that the outdoor wind power reaches a set value, the hydraulic rod is folded, so that the push window is closed to prevent sand from entering a room.

The invention discloses a dustproof pavement grooving machine and belongs to the technical field of pavement construction equipment. The pavement grooving machine comprises a base, wheels, blades anda driving motor used for driving the blades to rotate, and further comprises a dustproof device, wherein the dustproof device comprises a suction hood, an air suction pipe, an air suction main pipe, an exhaust pipe, a dust suction box and an exhaust fan; the suction hood is positioned above the blades; the air suction pipe is fixed at the bottom of the suction hood; a through hole is formed in theair suction pipe; one end of the air suction main pipe is connected with the air suction pipe, and the other end of the air suction main pipe is connected with the exhaust pipe; a supporting plate, acoarse filtering net, a fine filtering net and a sponge layer are sequentially arranged in the dust suction box from top to bottom; a perforation is formed in the supporting plate; one end of the exhaust pipe is connected with the exhaust fan, and the other end of the exhaust pipe is communicated with the perforation; an exhaust port is formed in the bottom of the dust suction box and positionedbelow the sponge layer. According to the pavement grooving machine disclosed by the invention, the problem that dust garbage easily drifts away in air to cause environmental pollution in the process of operating the traditional grooving machine is solved, the operating environment is optimized, and the air pollution is reduced.

The invention discloses an auto disturbance rejection control method for a space robot with actuator saturation. The method comprises the following steps: arranging a proper transition process for anexpected track and posture of a system by designing a tracking differentiator, and meanwhile, acquiring a differential signal with an expected value to make preparation for subsequent controller design; and designing a sampling expansion state observer by utilizing a discrete output signal, performing real-time estimation on the total non-linear uncertain items which are formed by the state of thespace robot system as well as coupling and external disturbance, and compensating the estimation values of the non-linear uncertain items into an error feedback control rate. By the method, adverse influence on the system by non-linear factors such as internal and external disturbance can be avoided, and the fact that an actuation mechanism implements accurate position and posture control on thespace robot within the saturation range can be guaranteed. The control strategy provided by the invention has a good control effect on the space robot system considering sampling output and with actuator saturation, and can be widely applied to other non-linear systems.

The invention relates to a multivariate time series similarity measuring method oriented to the ocean field. The similarity measuring method comprises the following steps that S1, typhoon data is collected; S2, the typhoon data is preprocessed, wherein typhoon attribute screening and data supplementing are included; S3, the typhoon data is described, wherein movement direction showing and typhoon time series showing are included; S4, the typhoon data is subjected to similarity measurement, wherein typhoon attribute weight calculation, W-DTW distance calculation and W-DTW distance judgment are included ; S5, similar typhoon is output. The method has the advantages that whether two ocean time series with dynamics, spatiality, predictability and multiple attributes are similar or not is judged; the development trend of a current ocean event is judged based on an occurring ocean event; for ocean disasters, a convenient auxiliary decision can be provided for relevant departments, protection measures are taken, and economic losses and casualties caused by the ocean disasters are reduced.

The invention provides a protection guard. The protection guard comprises a bending plate, at least three supporting blocks and at least one handrail. Two ends of the bending plate are fixed to the supporting blocks, the two ends of the handrail are fixed to the supporting blocks, and the handrail is arranged above the bending plate. The protection guard is simple in structure and convenient to assemble, the protection guard can be applied to various occasions in an infinite combination manner, the protection measure can be achieved, the process of observing the board tailoring is not affected, and meanwhile, machining of small boards is not obstructed.

The invention belongs to the field of thermal imaging monitoring, and discloses a thermal imaging monitoring method and a monitoring system thereof. The method includes obtaining an image, and performing fire early warning analysis on the image; the fire early warning analysis includes obtaining the size of the high temperature area and the high temperature area Coefficient, according to the size of the high temperature region, high temperature region coefficient and pixel value of the high temperature region to obtain the regional mean value of the high temperature region, and obtain the average value of the whole map except the high temperature region, and obtain an alarm signal according to the region mean value and the whole map mean value, The high temperature area is an area including the highest temperature position of the image; the method also includes performing head count analysis on the image; the head count analysis includes determining a candidate area of ​​the image according to a head and shoulders template and a threshold value In order to perform primary screening, a classifier is used to perform secondary screening on the candidate area to obtain the number of heads, and the head and shoulder template and the threshold value are constant; the system corresponds to the method.

The invention discloses a pit type lifting garage which comprises a base, wherein a motor is arranged in the base; an electric telescopic rod is in drive joint with the upper part of the motor; a first plate is fixedly connected with the upper part of the electric telescopic rod; vertical plates are arranged above the first plate; a baffle plate is connected between the vertical plates; and a fixed block is arranged on one side of the vertical plates. The pit type lifting garage has the following benefits: through arranging the motor and the electric telescopic rod, the lifting function of thegarage is realized, so that the space is saved to certain degree; when the pit type lifting garage is used, a telescopic plate is pulled out through a first handle, the fixed block and the handle arefixed through a threaded column and a nut; when the pit type lifting garage is not used, the telescopic plate can be put in the first plate, so that the pit type lifting garage is more flexible to use; a buffering plate is arranged to enable a vehicle to be backed in the garage steadily; and a second handle is arranged, and a rotary shaft is rotated to drive the buffering plate to be lifted up, so that certain protective measures can be taken for the vehicle after the vehicle is backed into the garage.

The invention relates to an ultraviolet ray intensity monitoring method and system, and a mobile terminal; the ultraviolet ray intensity monitoring method is applied to the ultraviolet ray intensity monitoring system and the mobile terminal configured with the monitoring system, and used for monitoring the ultraviolet ray intensity of the local area to which the mobile terminal is located; the ultraviolet ray intensity monitoring method comprises the following steps: obtaining a light intensity ratio between the visible light, the infrared ray and the ultraviolet ray in the local sunlight spectrum; detecting the local visible light intensity and the infrared ray intensity; calculating the local ultraviolet ray intensity according to the local visible light intensity and the light intensityratio between the visible light, the infrared ray and the ultraviolet ray. The method and system can obtain the local visible light intensity and the infrared ray intensity, and can calculate the local ultraviolet ray intensity according to the light intensity ratio between the visible light, the infrared ray and the ultraviolet ray, thus providing more accurate local ultraviolet ray intensity data for users, and enabling users to take protection measures according to the real ultraviolet ray intensity.

The invention relates to glasses with a remote monitoring function. The glasses comprise a glasses frame, two lenses are inlaid in the glasses frame, a signal transceiver and a PH detector are arranged between the lenses from top to bottom, an active buzzer is arranged at one side of one lens, a miniature lamp is arranged at the other side of the other lens, the two ends of the glasses frame are movably connected with a first glasses leg and a second glasses leg respectively, a miniature electrical storage device is arranged in an inner cavity of the first glasses leg, and an PLC chip is arranged at one side of the miniature electrical storage device. The glasses are not prone to falling by means of a designed anti-slipping rope and are more convenient to wear, the arranged miniature lamp can provide light in a place with weak lamplight at night, brain wave information of a wearer can be monitored at any time through an arranged potential chip and a signal processor, if information is disordered, family members of the wearer are remotely informed through the arranged signal transceiver to achieve remote protection, and the outdoor PH value can be detected in real time through the arranged PH detector to protect the wearer.

The invention discloses a model decoupling-based intelligent substation reconstruction and expansion change impact analysis method, including: obtaining interval information according to the original SCD file, and when there is no interval information, by creating voltage levels, intervals and virtual primary conductive equipment, the Bind the virtual primary conductive equipment with the secondary equipment to obtain the interval to which the secondary equipment belongs; determine the interval equipment affected by the reconstruction and expansion, decouple the unrelated interval and the affected interval, and obtain the unrelated interval model and the affected interval model; The impact interval model is added to the extended interval model, and after the configuration is completed, it is merged with the irrelevant interval model to form a new SCD file; by comparing the original and new SCD files, the impact analysis is performed to determine the scope of impact. The invention realizes the reduction of the traditional direct modification of the SCD by modifying the specific model configuration file to cause wrong changes or the risk of wrong changes to the already put into operation interval model, meets the security management and control requirements of the SCD file change for the substation reconstruction and expansion, and reduces the complexity of the SCD file application.

The invention relates to the technical field of life machinery, in particular to a lifting article storage and arrangement moving platform. The lifting article storage and arrangement moving platformcomprises a loading box, universal wheel assemblies are connected to the bottom of the loading box in a threaded mode, and each universal wheel assembly comprises a connecting frame, a locking key anda moving wheel; the connecting frames are fixedly connected to the bottom of the loading box, the moving wheels are rotatably connected to the bottoms of the connecting frames through rotating shafts, the locking keys are arranged on the connecting frames in the mode of corresponding to the moving wheels, and fixing feet are fixedly arranged on the portions, located on the outer sides of the universal wheel assemblies, of the bottom of the loading box; and a lower fixing bottom plate is fixed to the bottom of the interior of the loading box, a reinforcing plate is fixedly connected to the endface, far away from the loading box, of the lower fixing bottom plate, a driving motor is fixedly arranged at the end, far away from the lower fixing bottom plate, of the reinforcing plate, a precisescrew rod is fixedly connected to the driving end of the driving motor, and a screw rod shaft sleeve is connected to the precise screw rod. According to the lifting article storage and arrangement moving platform, through arrangement, articles can be efficiently stored and arranged.

The invention discloses a marine pollutant sufficient cleaning clearing machine, which comprises a tube body, wherein a salvage structure is arranged on the outer wall of the tube body, slag rakes are uniformly distributed on the front end surface of the salvage structure, a slag collecting groove is formed in a position, positioned under the slag rakes, of the salvage structure , the upper part of the slag collecting groove is provided with a filtering screen, the slag collecting groove is communicated with the tube body, and each of the two ends of the salvage structure is provided with a water quality monitoring. The marine pollutant sufficient cleaning clearing machine has the advantages that blue algae can be sufficiently salved, the sea surface can be effectively cleaned, meanwhile, the water quality monitoring devices are adopted, and the water quality can be detected in time, so that protection measures can be well done.

The invention discloses a pit-type lifting garage. The pit-type lifting garage comprises a base. A motor is arranged in the base. An electric control telescopic rod is in driving connection with the upper portion of the motor. A first plate is fixedly connected to the upper portion of the electric control telescopic rod. Vertical plates are arranged above the first plate. A baffle is connected between the vertical plates. A fixing block is arranged on one side of the vertical plates. The pit-type lifting garbage has the beneficial effects that by arranging the motor and the motor telescopic rod, the lifting function of the garbage can be realized, and the space is saved to a certain degree; when the garbage is used, a telescopic plate is pulled out through a first handle, and the fixing block and the handle are fixed through a threaded column and a nut; when the garbage is not used, the telescopic plate can be contracted into the first plate, so that the device is more flexible to use;and by arranging a buffer plate, a car can be stably reversed into the garbage, a rotating shaft is rotated through a second handle, the rotating shaft drives the buffer plate to be lifted up, and acertain protection function can be played on the car when the car is reversed into the garbage.

The invention discloses a method capable of monitoring the state of a power transmission tower in an online manner in real time. The method comprises the following steps: arranging a supporting deviceat the bottom end of a foot of a power transmission rod in a sleeving manner; monitoring the inclined state of the power transmission rod and a surrounding environment through a plurality of pressuresensors arranged on the inner wall of a fixing ring and an angle inclination sensor, a wind speed sensor, a wind pressure sensor, a temperature sensor and a humidity sensor which are arranged on thepower transmission rod; transmitting a monitored signal to a central processing unit; and after analyzing the signal by the central processing unit, transmitting the signal to a controller which controls a driving mechanism. By an online monitoring method, the stability of a tower rod can be improved, meanwhile, a good supporting effect can be achieved when the tower rod is inclined, the tower rodcan be prevented from turning over in a short time, conditions of the power transmission rod and the surrounding environment are monitored in real time, when the angle of the power transmission rod changes, an acting force in a reverse direction can be applied to the power transmission rod, thus, a certain time can be gained for repair workers or the repair workers can take protection solutions in time.

The invention provides an ultrasonic gas meter, which comprises a shell body and a metering module, wherein the metering module is arranged in the shell body; an air inlet and an air outlet are formedin the shell body; the air outlet end of the metering module is connected with the air outlet; and the air inlet is formed in the bottom surface of the shell body. The structural arrangement of the device breaks the fixed thinking of the structural design of the traditional ultrasonic gas meter, and prevents water in a pipeline from entering the shell body through the air inlet by changing the arrangement position of the air inlet; and the technical problem of accumulated water in the structure of the traditional ultrasonic gas meter is solved from a source, and the problem of inaccurate metering after the surface of an ultrasonic probe on the metering module is wetted is prevented from causing metering failure.

The invention discloses an air quality sensor and external use type air quality sensor equipment for a smart phone. The external use type air quality sensor equipment for the smart phone comprises anequipment box, an air quality detection device and an interface, wherein the air quality detection device and the interface are fixedly arranged in the equipment box; the air quality detection deviceis the air quality sensor; the air quality sensor is electrically connected with the interface through an output serial port; the interface is used for communication of a mobile phone; the interface comprises an OTG (USB On-The-Go) transceiver and a USB (Universal Serial Bus) plug; the output end of the OTG transceiver is electrically connected with the USB plug while the input end of the OTG transceiver is electrically connected with the output end of the air quality sensor; the USB plug is fixedly connected with the lower end face of the equipment box through a fixing board. The external usetype air quality sensor equipment for the smart phone has characteristics of simple structure, capability of plugging and playing and convenience for utilization.

The invention provides a metal rod welding device for fitness equipment production, and relates to the technical field of welding, the metal rod welding device comprises a workbench, an electric sliding rail is fixedly mounted at the rear end of the workbench, a laser welding machine mounting table is slidably mounted on the electric sliding rail, and a laser welding machine is fixedly mounted at the front end of the laser welding machine mounting table; a discharging groove is formed in the surface of the upper end of the workbench, mounting plates are slidably mounted in the mounting plate limiting sliding grooves, two mounting plate synchronous assemblies are fixedly mounted at the two ends of the two mounting plates correspondingly, and two barbell rod rotation driving assemblies are fixedly mounted on the two mounting plates correspondingly; according to the scheme, a second motor at the front end of the fixing assembly overturning table is overturned through the fixing assembly overturning table, and after being locked through a locking sleeve piece, the second motor is placed down; and the rotating speed of the barbell rod is the same as the rotating speed of the barbell rod rotating driving assembly through the second motor.

The invention relates to an ultraviolet intensity monitoring method and a system, and a mobile terminal. The ultraviolet intensity monitoring method is applied to the ultraviolet intensity monitoring system and to a mobile terminal equipped with the ultraviolet intensity monitoring system, and is used to monitor the ultraviolet intensity of the place where the mobile terminal is located. The ultraviolet intensity monitoring method includes the following steps: acquiring the intensity ratio of visible light to ultraviolet in the local solar spectrum; detecting the local visible light intensity; and calculating the local ultraviolet intensity according to the local visible light intensity and the intensity ratio of visible light to ultraviolet. According to the ultraviolet intensity monitoring system and the ultraviolet intensity monitoring method, the local ultraviolet intensity is calculated through acquiring the local visible light intensity, and according to the intensity ratio of visible light to ultraviolet. Therefore, accurate local ultraviolet intensity data can be provided for users, and users are enabled to take protective measures according to the actual ultraviolet intensity.

The invention provides a field monitoring information processing device. The field monitoring information processing device comprises a user management module, a basic data processing module, a monitoring management module, and a safety management module, wherein the user management module is used for classifying and storing user authorities, and processing the logging and registration of a user; the basic data processing module is used for adding, modifying or deleting one or multiple of preset databases; the monitoring management module is used for uploading monitoring information to a preset server, extracting the monitoring information from the preset servers, grouping the stored monitoring information on the preset servers, and exporting the data information to the outside; the safety management module is used for performing security management on the preset databases by one or multiple of accessing control, identity identification, authentication, auditing, standby restoration and prevention of SQL (structured query language) injection attack. The field monitoring information processing device has the advantages that the protection monitoring information of field animals can be effectively processed, and the security is higher.

The invention discloses a novel extraction paper pressing and dedusting device. The novel extraction paper pressing and dedusting device comprises pressure reduction springs, a transmission rubber belt, a dust-proof cover, an axial-flow type dust collection fan and a dust exhaust pipe. The dust-proof cover is installed above the transmission rubber belt, the middle end inside the dust-proof cover is provided with the axial-flow type dust collection fan, and the dust exhaust pipe is installed on the axial-flow type dust collection fan. The novel extraction paper pressing and dedusting device is scientific and reasonable in structure and safe and convenient to use, and through the arrangement of the pressure reduction springs, the situation that the extraction paper deforms and is hardened in the pressing process of the extraction paper can be prevented; through the arrangement of the transmission rubber belt, the problem that the extraction paper is damaged in the pressing process can be avoided, and the product quality of the extraction paper is further improved; through the arrangement of the dust-proof cover, overflowing of scraps of paper, dust and the like can be prevented, and certain protection measures are taken for workers; and through the arrangement of the axial-flow type dust collection fan, the dust exhaust pipe and other components, the dust, the scraps of paper and the like can be sucked and exhausted timely.