38results about How to "Blocking will not" patented technology

The invention discloses a wireless node blocking system which comprises a wireless node data package gathering module used for gathering a transmitted wireless node data package in wireless network, a wireless node analysis module used for analyzing wireless node information in the gathered wireless node data package and building a wireless network topological structure, a blacklist and whitelist judging module used for judging whether the wireless node needs to be blocked through a comparison between the wireless network topological structure and the blacklist or the whitelist, and a wireless node blocking module used for creating authentication data package for blocking a wireless access point. Through a comparison and a judgment of the blacklist and whitelist judging module, the wireless node analysis module can automatically analyze the wireless node which needs to be blocked, and only block the wireless node which needs to be blocked. Therefore, normal communications of other legal wireless nodes in the internet are guaranteed.

The invention discloses an intermittent coating pole lug gumming device and a gumming machine frame thereof. A spray head bracket and a water tank bracket are arranged on a main frame body of the gumming machine frame. The spray head bracket is assembled on the main frame body in guiding and moving mode along the vertical direction. A spray head low position used to enable a nozzle of a gumming spray head to fall into a water tank or offset on one horizontal side of the water tank and a spray head high position used to locate the nozzle of the gumming spray head above the water tank are arranged within the move stroke of the spray head bracket. Accordingly, glue liquid sizing gummed on the inner side and the outer side of the nozzle of the gumming spray head is immersed in liquid in the water tank so as to prevent the circumstance that the remaining glue liquid sizing on the inner side and the outer side of the nozzle of the gumming spray head coagulates, and further prevents the remaining glue liquid sizing from blocking the gumming nozzle, the remaining glue liquid sizing in the gumming spray head is prevented from coagulating in coating intervals, and then can not stop a next gumming job, and therefore efficiency and quality of coating operation are improved.

The invention discloses a system and method of wireless mobile terminal blocking. A wireless mobile terminal is the wireless mobile terminal. The system of wireless mobile terminal blocking comprises a white list judging module and a wireless mobile terminal blocking module, wherein the white list judging module is used for judging whether the wireless mobile terminal is needed to block by comparing recorded messages in a wireless network topology and the white list, and the wireless mobile terminal blocking module aims at the need-to-block wireless mobile terminal to generate deauthentication data package which blocks the wireless mobile terminal according to judged result. The system and method of wireless mobile terminal blocking can automatically analyze the need-to-block wireless mobile terminal according to comparing and judging of the white list judging module, can only aim at the need-to-block wireless mobile terminal to generate the deauthentication data package to conduct blocking, and can ensure normal communication of the other legal wireless mobile terminals in network at the same time of blocking illegal wireless mobile terminal.

The invention relates to the technical field of inorganic membrane separation, and in particular relates to a preparation method of a biphase independent regularly-distributed chip ceramic membrane with double transport channels. The preparation method is based on spinning and flow casting molding techniques, and comprises the following steps: ionic conduction ceramic powder and electronic conduction ceramic powder are used as raw materials, the ceramic powder with low electric conductivity in the ionic conduction ceramic powder and the electronic conduction ceramic powder is molded by the flow casting process to obtain a continuous phase, the ceramic powder with high electric conductivity in the ionic conduction ceramic powder and the electronic conduction ceramic powder is molded by the spinning process to obtain a dispersed phase, then the dispersed phase is uniformly dispersed into the continuous phase, a biphase membrane precursor is prepared by phase change curing, and the biphase independent regularly-distributed chip ceramic membrane with double transport channels is obtained by sintering. The preparation method has high preparation efficiency, good stability and low cost, overcomes the problem that bi-component mixed distribution can result in mutual clogging, greatly improves the rate of mass transfer, and has low requirements on the chemical compatibility of the two materials.

The invention discloses a water shutoff agent and a preparation method thereof, which belong to the technical field of oilfield exploitation chemical preparation. According to the invention, after graphene powder, sodium periodate and nitric acid solution are stirred to react, filtration is carried out, filter residue is collected and washed, the filter residue, sphagnum teres herb and water are then mixed and ground, so that mixed slurry is obtained, the mixed slurry, glucose and ammonium tartrate are mixed for fermentation, the obtained fermentation product is dried, and reacts with methallyl alcohol and sulfuric acid solution, the obtained product is filtered, so that a filter cake, which is modified graphene, is obtained, the modified graphene then reacts with itaconic acid, a catalyst and the like, so that a graphene-modified polymer is obtained, the graphene-modified polymer, sodium fluorosilicate, an additive and the like are then mixed, so that the mixture is obtained, and finally, after the mixture is kneaded, dried and cooled, the water shutoff agent is obtained. The water shutoff agent obtained by the invention has a good water shutoff effect, and moreover, the water shutoff agent has excellent temperature-resistant and mineralization-resistant properties; after being injected into a stratum for use, the water shutoff agent cannot easily cause blockage, and can effectively increase the oil and gas recovery rate; and a good application prospect is realized.

The invention discloses a process for synthesizing a doripenem lateral chain. According to the process disclosed by the invention, L-hydroxyproline is taken as a starting raw material, and the doripenem lateral chain is obtained through the following steps of: amino protection, carboxyl protection, hydroxyl activation, reduction reaction, acetyl vulcanization reaction and condensation reaction. The process provided by the invention has the advantages of simple and easily-obtained raw materials, no high-temperature and high-pressure reactions and no super-low-temperature reactions; the 'three wastes' generated in the production process mainly comprise waste liquid and the wastewater in the waste liquid is neutralized by appropriate acid and alkali and then is discharged after achieving the discharging standard; and the organic solvents in the waste liquid comprises dichloromethane, dichloromethane and alcohols and can be recycled to be reutilized so that the pollution on the environment is small.

The invention discloses an intelligent key chain joint management system comprising main control equipment for monitoring storing states of keys, a plurality of control circuit boards, and communication units. The control circuit boards are arranged in a box body for storing the keys, and each key is provided with an RFID label corresponding to the key; each control circuit board is provided witha main control unit and a plurality of RFID card readers; the main control units are in communication connection with the internal main control equipment through communication units, the main controlunits are internally provided with event state machines, and non-blocking I / O ports of the event state machines are in communication connection with the control ends of the RFID card readers correspondingly; and the periphery of each RFID card reader is provided with four key slots, the first ends of all the key slots are fixed to the control circuit boards, and key leashes of the keys are placedat the second ends of the key slots. According to the intelligent key chain joint management system, the event state machines are adopted to conduct non-blocking monitoring on the storing states of key chains, and thus the phenomenon of information reading delaying or losing of the RFID card readers can be reduced.

The invention discloses a broadband folding plane reflection array antenna which comprises a dielectric substrate, a feed horn, a polarization grid and a large number of reflection units printed on the dielectric substrate, wherein each reflection unit adopts a double-resonant structure and is composed of a Jerusalem cross patch arranged in the center and two pairs of rectangular patches arranged on the periphery, the unit has a flat phase shift curve and a phase shift range exceeding 450 degrees, so that the broadband performance of the antenna is realized. The broadband folding type plane reflection array antenna is simple in structure, low in profile, good in mechanical stability and free of shielding of a feed source and a support.

The invention discloses a shoe lace self-tied shoe capable of free high-top and low-top switching. The shoe lace self-tied shoe comprises a shoe main body, a shoe top, a light reflecting inserted piece, a shoe tying band, ventilation holes and through holes, wherein an internal groove is formed in the interior of the shoe main body, and the bottom of the inner surface of the shoe main body is connected with a shoe pad, and the bottom surface of the shoe pad is connected with a supporting rod; the tail end of the supporting rod is connected with a telescopic rod, and the tail end of the telescopic rod is placed on the inner surface of the internal groove; and the top of the telescopic rod is connected with a square block. According to the shoe lace self-tied shoe capable of free high-top and low-top switching, the shoe top can be separated from the shoe main body by pressing the light reflecting inserted piece, so that the shoe can be converted into a low-top shoe from a high-top shoe,when the low-top shoe needs to be converted into the high-top shoe, a lug is inserted into the shoe main body, the shoe main body is clamped with a bevel block, the effect of free high-top and low-topswitching is reached, and high top and low top are selected without the need of consuming energy.

The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment method, which comprises the following steps: S1, preparing a wastewater treatment device;S2, enabling water to flow through a filter screen to intercept floaters and suspended solids; S3, when the filter screen is blocked, enabling the water level in a filter tank to rise, driving a floating plate to move upwards, enabling the floating plate to drive a rack to move upwards, enabling the rack to drive a second gear to rotate, enabling the second gear to drive a third gear to rotate, and enabling the third gear to drive a first gear to rotate, enabling the first gear to drive a second bevel gear to rotate, and enabling the second bevel gear to drive a first bevel gear to rotate; S4,enabling a threaded rod to drive a cleaning plate to move to clear up intercepted objects on the filter screen, thus enabling the filter screen to be communicated; and S5, when the filter screen is dredged, resetting the cleaning plate by a reset mechanism. The method has the characteristics that the filter screen is automatically cleaned, and the treatment speed during wastewater treatment is increased.

The invention discloses a photovoltaic frame of a solar cell. The photovoltaic frame of the solar cell comprises a cavity and a glue overflow groove fixedly connected with the cavity. The glue overflow groove is positioned on the upper surface of the cavity, the section of the cavity is rectangular, the supporting wall of the glue overflow groove is directly in contact with any side wall of the cavity to be fixedly connected, and the other side wall of the cavity is connected with the end portion of the upper wall of the cavity and the end portion of the lower wall of the cavity; the width ofthe cavity is larger than the width of the upper wall of the glue overflow groove, and the width of the cavity is less than two times of the width of the upper wall of the glue overflow groove. Because the supporting wall of the glue overflow groove is directly in contact with any side wall of the cavity, and the other side wall of the cavity is connected with the end portion of the upper wall ofthe cavity and the end portion of the lower wall of the cavity, the photovoltaic frame has no c-surface design, so that the condition that the c-surface shields the back surface of the double-sided solar cell can be avoided; because the width of the cavity is larger than the width of the upper wall of the glue overflow groove and is smaller than two times of the width of the upper wall of the glueoverflow groove, the cavity cannot shield the back of the double-sided solar cell, thereby being suitable for the double-sided solar cell.

The invention relates to a novel gas drive two-stage light gas gun piston and additional weight combination device. The combination device is of a nylon 66-tungsten alloy-nylon 66 piston three-section type structure, front end nylon 66, a tungsten alloy additional weight and back end nylon 66 are all arranged to be cylinders, a front end nylon 66 horn mouth is arranged at the front end of the front end nylon 66, front end nylon 66 grooves are formed in front end nylon 66 side walls, a tungsten alloy additional weight and front end nylon 66 connecting protrusion is arranged at the front end of the tungsten alloy additional weight, a tungsten alloy additional weight and back end nylon 66 connecting protrusion is arranged at the back end of the tungsten alloy additional weight, and a back end nylon 66 and additional weight connecting grooves are arranged on a cylinder central axis of the front end of the back end nylon 66. By means of the nylon 66-tungsten alloy-nylon 66 piston three-section type balanced design of the novel gas drive two-stage light gas gun piston and additional weight combination device, the diameter of the additional weight is reduced appropriately, a pump pipe is not likely to block, damage of additional weight dismounting to the pump pipe is avoided, the pump pipe cannot be blocked even though the additional weight is repeatedly used and deformation upsetting occur, and the additional weight is stopped at a high-pressure taper section and is easy to take out.

The invention discloses a feeding device for raising chickens. The feeding device includes a charging basket and a supporting mechanism; the charging basket is provided with a pushing rod and a feed inlet; one end of the pushing rod is fixedly connected to the top of the charging basket, and the other end of the pushing rod is fixedly connected to a rotating disk; the pushing rod is vertical to the upper surface of the rotating disk; the rotating disk is connected to a motor; the basket body of the charging basket is provided with through holes; the outer wall of the charging basket is provided with an arc shell used for covering the through holes; the bottom of the charging basket is provided with a sliding groove in an annular manner; the arc shell is slidingly connected to the sliding groove; the supporting mechanism includes a supporting shaft and a rotating rod; the rotating rod is vertical to the supporting shaft; one end of the rotating rod is rotatably connected to the top endof the supporting shaft, and the other end of the rotating rod is fixedly connected to the bottom of the charging basket; and the diameter of the rotating disk is twice the length of the rotating rod.Thus, feed can be uniformly spread when the feeding device feeds chickens, and that the chickens are injured due to food snatching can be greatly reduced.

The invention discloses a novel type filter valve which relates to a filter valve and solves the problems that excrement of ornamental fish in a domestic ornamental fish tank cannot be decomposed, andduring the use process of the filter valve, a large number of excrement is easy to cause the blockage of the filter valve so as to further influence a filtration effect of the filter valve. The invention provides the technical scheme point that the novel type filter valve comprises a valve body, wherein the valve body is provided with an inflow port for a fluid to enter, and an outflow port for the fluid to flow out; filter sand for filtering the excrement of the ornamental fish and a filter fine screen for filtering micro impurities are arranged in the valve body; the clearance of the filtersand is larger than the pore of the filter fine screen; the filter sand and the filter fine screen are sequentially arranged along the water flowing direction; water sequentially passes through the filter sand and the filter fine screen, the ornamental fish excrement in water is firstly filtered through the filter sand, then the micro impurities are filtered through the filter fine screen, and blockage is not easy to occur due to the large clearance between the filter sand, so that the normal use of the filter valve is ensured.

The invention provides a component feeder can effectively prevent the jamming of a cover tape in a discharge path. A carrier tape wound in advance on a reel held at a specified position is sequentially delivered and transported to the downstream side. A cover tape is peeled off the tape body of carrier tape that has reached a peeling position, and a component stored in the recess of the tape bodyis exposed. Then the component is supplied to the pick up position on the downstream side while the cover tape that has been peeled is wound on a rotor provided on a specified position. The rotor is rotated in synchronous with delivery of the carrier tape. So the cover tape is delivered while applied with tension, and discharged to the downstream side by way of the discharge path on the rotor exitside. A discharge guide provided with a first main surface guide part and a second main surface guide part of which an interval gradually increases from the vicinity of the rotor toward discharging direction, is arranged on the main surface sides of the cover tape discharged to the discharge path.

The invention relates to the technical field of municipal roads, and discloses a desilting device for water drainage of municipal roads. The desilting device comprises a vehicle body, wherein an operation box and a carriage are fixedly connected at a box support position of the vehicle body in the sequence from left to right, a mechanical arm is arranged on the top of the operation box, a grab bucket is hoisted to the tail end of the mechanical arm through a pulley and a wire rope, sliding chutes are formed in the front and rear side faces of the carriage in a vertically symmetric manner, upper sliders and lower sliders are connected to the upper and lower sliding chutes in a sliding manner, clamping blocks are clamped to the upper sliders, water outlet grooves are formed in the clamping blocks, first water diversion plates are fixedly connected to the bottoms of the clamping blocks, the first water diversion plates sleeve second water diversion plates, hinging blocks are fixedly connected to the bottoms of the second water diversion plates, and the hinging blocks are hinged to the lower sliders. With the desilting device for water drainage of municipal roads, the problems that after desilting of a desilting vehicle, the operation environment is dirty, disorderly and bad, water resources are wasted during road washing, and road separating lines are blocked, are solved, water resources are saved, the operation environment is clean, and the road separating lines are not blocked.

The invention provides a frame of a vehicle notebook computer and belongs to the technical field of the computers. The frame of the vehicle notebook computer is used for solving the problems that the frame of an existing notebook computer cannot be rotated relatively to a display screen and the like. According to the frame of the vehicle notebook computer, the vehicle notebook computer comprises a host and a display screen arranged on the host; a frame is further arranged between the host and the display screen and rotatably arranged on the host, and the display screen is rotatably arranged in the frame; the frame is characterized by comprising a left half frame and a right half frame which are symmetrical to each other, wherein an upper shaft sleeve is hinged between the upper end of the left half frame and the upper end of the right half frame, while a lower shaft sleeve is hinged between the lower end of the left half frame and the lower end of the right half frame, an upper rotating shaft is fixed on the upper end of the display screen, while a lower rotating shaft is fixed on the lower end of the display screen, and the upper rotating shaft is arranged in the upper shaft sleeve, while the lower rotating shaft is arranged in the lower shaft sleeve. The frame of the vehicle notebook computer can be rotated relatively to the display screen.

The invention relates to the technical field of inorganic membrane separation, and in particular relates to a preparation method of a biphase independent regularly-distributed chip ceramic membrane with double transport channels. The preparation method is based on spinning and flow casting molding techniques, and comprises the following steps: ionic conduction ceramic powder and electronic conduction ceramic powder are used as raw materials, the ceramic powder with low electric conductivity in the ionic conduction ceramic powder and the electronic conduction ceramic powder is molded by the flow casting process to obtain a continuous phase, the ceramic powder with high electric conductivity in the ionic conduction ceramic powder and the electronic conduction ceramic powder is molded by the spinning process to obtain a dispersed phase, then the dispersed phase is uniformly dispersed into the continuous phase, a biphase membrane precursor is prepared by phase change curing, and the biphase independent regularly-distributed chip ceramic membrane with double transport channels is obtained by sintering. The preparation method has high preparation efficiency, good stability and low cost, overcomes the problem that bi-component mixed distribution can result in mutual clogging, greatly improves the rate of mass transfer, and has low requirements on the chemical compatibility of the two materials.

The invention discloses a wireless node blocking system which comprises a wireless node data package gathering module used for gathering a transmitted wireless node data package in wireless network, a wireless node analysis module used for analyzing wireless node information in the gathered wireless node data package and building a wireless network topological structure, a blacklist and whitelist judging module used for judging whether the wireless node needs to be blocked through a comparison between the wireless network topological structure and the blacklist or the whitelist, and a wireless node blocking module used for creating authentication data package for blocking a wireless access point. Through a comparison and a judgment of the blacklist and whitelist judging module, the wireless node analysis module can automatically analyze the wireless node which needs to be blocked, and only block the wireless node which needs to be blocked. Therefore, normal communications of other legal wireless nodes in the internet are guaranteed.

The invention discloses a system and method of wireless mobile terminal blocking. A wireless mobile terminal is the wireless mobile terminal. The system of wireless mobile terminal blocking comprises a white list judging module and a wireless mobile terminal blocking module, wherein the white list judging module is used for judging whether the wireless mobile terminal is needed to block by comparing recorded messages in a wireless network topology and the white list, and the wireless mobile terminal blocking module aims at the need-to-block wireless mobile terminal to generate deauthentication data package which blocks the wireless mobile terminal according to judged result. The system and method of wireless mobile terminal blocking can automatically analyze the need-to-block wireless mobile terminal according to comparing and judging of the white list judging module, can only aim at the need-to-block wireless mobile terminal to generate the deauthentication data package to conduct blocking, and can ensure normal communication of the other legal wireless mobile terminals in network at the same time of blocking illegal wireless mobile terminal.

The invention relates to a novel gas drive two-stage light gas gun piston and additional weight combination device. The combination device is of a nylon 66-tungsten alloy-nylon 66 piston three-section type structure, front end nylon 66, a tungsten alloy additional weight and back end nylon 66 are all arranged to be cylinders, a front end nylon 66 horn mouth is arranged at the front end of the front end nylon 66, front end nylon 66 grooves are formed in front end nylon 66 side walls, a tungsten alloy additional weight and front end nylon 66 connecting protrusion is arranged at the front end of the tungsten alloy additional weight, a tungsten alloy additional weight and back end nylon 66 connecting protrusion is arranged at the back end of the tungsten alloy additional weight, and a back end nylon 66 and additional weight connecting grooves are arranged on a cylinder central axis of the front end of the back end nylon 66. By means of the nylon 66-tungsten alloy-nylon 66 piston three-section type balanced design of the novel gas drive two-stage light gas gun piston and additional weight combination device, the diameter of the additional weight is reduced appropriately, a pump pipe is not likely to block, damage of additional weight dismounting to the pump pipe is avoided, the pump pipe cannot be blocked even though the additional weight is repeatedly used and deformation upsetting occur, and the additional weight is stopped at a high-pressure taper section and is easy to take out.

The invention discloses a high-temperature air-leakage-proof expansion coating for a tundish sleeve. The expansion coatingcomprises, by weight, 2-3% of methyl cellulose, 2-4% of styrene-acrylic emulsion, 0.2-0.4% of a thickening agent, 20-30% of high-purity magnesium oxide, 20-40% of silica powder, 25-30% of kyanite, 15-25% of zirconium oxide, 0-4% of C and 25-30% of water. The invention aims to provide the high-temperature air-leakage-proof expansion coating for the tundish sleeve, which is free of environmental pollution, good in heat insulation effect, high-temperature-resistant and good in sealing effect, and a preparation method of the high-temperature air-leakage-proof expansion coating.

The invention discloses a shoe lace self-tied shoe capable of free high-top and low-top switching. The shoe lace self-tied shoe comprises a shoe main body, a shoe top, a light reflecting inserted piece, a shoe tying band, ventilation holes and through holes, wherein an internal groove is formed in the interior of the shoe main body, and the bottom of the inner surface of the shoe main body is connected with a shoe pad, and the bottom surface of the shoe pad is connected with a supporting rod; the tail end of the supporting rod is connected with a telescopic rod, and the tail end of the telescopic rod is placed on the inner surface of the internal groove; and the top of the telescopic rod is connected with a square block. According to the shoe lace self-tied shoe capable of free high-top and low-top switching, the shoe top can be separated from the shoe main body by pressing the light reflecting inserted piece, so that the shoe can be converted into a low-top shoe from a high-top shoe,when the low-top shoe needs to be converted into the high-top shoe, a lug is inserted into the shoe main body, the shoe main body is clamped with a bevel block, the effect of free high-top and low-topswitching is reached, and high top and low top are selected without the need of consuming energy.

The invention relates to a rotary tube pump. The rotary tube pump is mainly provided with a rotary tube, a flange, a bearing and a sealing part, a blade is arranged on the inner wall of the rotary tube, and the rotary tube is erected on the outer wall of the flange through the bearing. The rotary tube pump is characterized in that the rotary tube and the flange are hollow cavities, and the flangeis directly connected with an external pipeline; the rotary tube rotates relative to the flange, the blade arranged on the inner wall of the rotary tube generates axial thrust while rotating, and fluid in the inner cavity of the rotary tube moves forwards under the function of thrust of the blade. The rotary tube pump is simple in structure, easy to manufacture, free of maintenance, and long in running time.

The invention discloses an intermittent coating pole lug gumming device and a gumming machine frame thereof. A spray head bracket and a water tank bracket are arranged on a main frame body of the gumming machine frame. The spray head bracket is assembled on the main frame body in guiding and moving mode along the vertical direction. A spray head low position used to enable a nozzle of a gumming spray head to fall into a water tank or offset on one horizontal side of the water tank and a spray head high position used to locate the nozzle of the gumming spray head above the water tank are arranged within the move stroke of the spray head bracket. Accordingly, glue liquid sizing gummed on the inner side and the outer side of the nozzle of the gumming spray head is immersed in liquid in the water tank so as to prevent the circumstance that the remaining glue liquid sizing on the inner side and the outer side of the nozzle of the gumming spray head coagulates, and further prevents the remaining glue liquid sizing from blocking the gumming nozzle, the remaining glue liquid sizing in the gumming spray head is prevented from coagulating in coating intervals, and then can not stop a next gumming job, and therefore efficiency and quality of coating operation are improved.

The invention discloses a book collecting and editing method of an intelligent three-dimensional stack room and a robot system. The method comprises the following steps: scanning and reading ISBN number information on a book; generating a plurality of same first information code labels by using the read ISBN number information; the first information code labels are pasted on the spine of the book and the blank of the back face or the front face of the book; pasting a second information code label containing preset information and stamping a seal containing the preset information on the blank of the title page of the book; and sticking the RFID tag containing the preset information to the blank of one page of the book. The first information code label and the second information code label are bar codes or two-dimensional codes, the information contained in the second information code label is a library collection number, and the content of the stamped seal is a library name or a name of a unit to which the library belongs; the collecting and editing method and system can meet the requirements of normal book collecting and editing, the standard degree is high, the labor input is small, the collecting and editing efficiency is high, and the workload and the working intensity of collecting and editing personnel are greatly reduced.

The invention discloses a water shutoff agent and a preparation method thereof, which belong to the technical field of oilfield exploitation chemical preparation. According to the invention, after graphene powder, sodium periodate and nitric acid solution are stirred to react, filtration is carried out, filter residue is collected and washed, the filter residue, sphagnum teres herb and water are then mixed and ground, so that mixed slurry is obtained, the mixed slurry, glucose and ammonium tartrate are mixed for fermentation, the obtained fermentation product is dried, and reacts with methallyl alcohol and sulfuric acid solution, the obtained product is filtered, so that a filter cake, which is modified graphene, is obtained, the modified graphene then reacts with itaconic acid, a catalyst and the like, so that a graphene-modified polymer is obtained, the graphene-modified polymer, sodium fluorosilicate, an additive and the like are then mixed, so that the mixture is obtained, and finally, after the mixture is kneaded, dried and cooled, the water shutoff agent is obtained. The water shutoff agent obtained by the invention has a good water shutoff effect, and moreover, the water shutoff agent has excellent temperature-resistant and mineralization-resistant properties; after being injected into a stratum for use, the water shutoff agent cannot easily cause blockage, and can effectively increase the oil and gas recovery rate; and a good application prospect is realized.