137results about How to "Improve repair efficiency" patented technology

This invention discloses an automatic browser memory leak location system, method, and medium based on the MCP protocol, belonging to the field of software testing technology. The system includes an MCP communication module, an automated testing module, a heap snapshot acquisition module, an incremental analysis module, a reference chain analysis module, a SourceMap location module, an intelligent repair module, and an IDE visualization module. This invention establishes a standardized connection between the IDE and the browser debugging port through the MCP protocol, achieving fully automated control; it employs a multi-dimensional fingerprint algorithm based on constructed stack frames and attribute structures to solve the problem of cross-snapshot object matching; it utilizes the dominator tree algorithm to compress the reference chain and combines it with the SourceMap index to achieve source code-level location and AI repair suggestion generation. This invention significantly improves the efficiency and accuracy of memory leak location, solving the problems of fragmented debugging links and the inability to accurately map source code.

The utility model discloses a building outer wall heat insulation structure, which relates to the technical field of building energy conservation and comprises a connecting component and a wall component slidably arranged on one side of the connecting component. The connecting assembly comprises a connecting main body, an upper arc-shaped groove is formed in the upper end of the connecting main body, a lower arc-shaped groove is formed in the lower end of the connecting main body, the upper arc-shaped groove is attached to the lower arc-shaped groove in the lower end of the adjacent connecting main body, a connecting plate is fixedly connected to one side of the connecting main body, and a connecting groove is formed in the other side of the connecting main body. By means of the connecting assembly and the wall body assembly, the whole wall body is converted into formwork splicing, the installation efficiency is effectively improved, meanwhile, the wall body is separated, the damaged wall body can be independently replaced when loss occurs, and the repair efficiency is effectively improved.

The application relates to the technical field of lithium battery diaphragm, in particular to a high-stability lithium battery diaphragm and a preparation method thereof. The high-stability lithium battery diaphragm is prepared by the following steps: after a polypropylene film is irradiated by ozone and ultraviolet light in sequence, pre-deposition and pre-grafting are carried out on the surface of the polypropylene film, and then ultraviolet radiation treatment is carried out. The application realizes synergistic effect of nano-enhancement and self-repairing, solves the stability problem of traditional PP diaphragms in long-term cycles, and provides a reliable diaphragm solution for high-energy-density lithium batteries.

The invention discloses a CMT electric arc welding method for defect repair welding of a ZL114A aluminum alloy casting, and belongs to the technical field of defect repair of aluminum alloy castings. The method aims at solving the problems that an existing repair welding method for the ZL114A cast aluminum alloy is high in heat input, large in deformation and low in repair efficiency. The method comprises the following steps: firstly, aiming at defects of different sizes, machining the defects into regular spherical-crown-shaped grooves of different sizes by utilizing a cold machining method; an electric steel wire brush is used for polishing the inner wall of the groove and base metal around the groove, and surface stains and oxide skin are removed; the casting is placed on a welding workbench; robot CMT welding equipment is adopted for repair welding; and writing a welding gun repairing path on the robot demonstrator. And repair welding is carried out according to the following principles: repair welding is carried out by utilizing an Al-Si welding characteristic curve, a repair welding piece is preheated to 250-350 DEG C, shielding gas is started, and automatic repair is started according to the planned path, the wire feeding speed and the welding speed. By means of the method, high-quality repair welding seams without pores and cracks can be obtained.

The application discloses a preparation method of an aluminum shielding tape surface conductive self-repairing coating. First, a clean aluminum shielding tape surface is obtained through an in-situ reduction / etching pretreatment method based on an aluminum salt / fluoride salt compound solution; second, a conductive / self-repairing dual-effect enhancer is prepared and introduced into a conductive / self-repairing coating synthesized by polyether amine, diisocyanate, a multiple active amine compound, p-xylene glycol and aniline; finally, the solid content of the coating is adjusted and sprayed on the clean aluminum shielding tape surface to obtain the conductive self-repairing coating. The application converts the Al2O3 film on the aluminum surface into a new substance Al, simultaneously constructs a regular porous structure, increases the bonding strength of the film layer, improves the adaptability and self-repairing efficiency of the coating in cable manufacturing and subsequent operation through the construction of a coating with multiple dynamic hydrogen bonds and imine bond synergistic effect, and realizes good conductive enhancement effect and rapid thermal self-repairing purpose of the coating by using isocyanate modified carbon nanotubes as the enhancer.

The invention belongs to the technical field of intelligent machining, and provides a control method, device and equipment for additive and subtractive repair of a valve body and a storage medium. According to the embodiment of the invention, a workpiece model corresponding to the valve body is obtained, and a reference coordinate system of the valve body is constructed; acquiring cutter location point information corresponding to the defect area under the reference coordinate system; on the basis of the actual installation posture of a target repairing tool located on an executing mechanism, posture calibration is conducted on a repairing tool model corresponding to the target repairing tool in the simulation environment, and the target repairing tool comprises an additive repairing tool or a subtractive repairing tool; based on the cutter location point information and the calibrated repair tool model, the motion trail of the execution mechanism; and performing additive and subtractive material repair based on a processing track program of the motion track. The embodiment of the invention can shorten the repair period of the valve body and reduce the repair cost of the valve body.

The invention provides an evaluation and repair method and system for a composite bushing umbrella skirt. The method comprises the following steps: detecting and evaluating the current aging state of the composite bushing umbrella skirt to obtain an aging grade; setting a repair decision according to the aging level; and repairing the composite sleeve umbrella skirt according to the result of the repairing decision. Through the processing of the steps, the evaluation and restoration method breaks through the limitation of detection decentralization, evaluation subjectivity and restoration manual operation in the prior art, establishes a standardized grading evaluation and decision-making mechanism, constructs a whole-process automatic restoration system, and improves the accuracy of the whole-process automatic restoration. According to the method, the aging state of the composite sleeve umbrella skirt can be automatically and accurately evaluated, the repairing process is intelligently and adaptively executed, the repairing effect is verified in a closed loop mode, and standardization, automation and precision of aging repairing of the composite sleeve umbrella skirt are achieved, so that the operation and maintenance cost and dependence on manpower are greatly reduced on the premise that the repairing quality is guaranteed, and the repairing efficiency is improved. And the repair efficiency and quality of the composite sleeve umbrella skirt are improved.

The utility model relates to the technical field of pipeline repair engineering, and discloses a jack for pipeline repair, which comprises a CCTV robot, a monitor transmission port is arranged outside the CCTV robot, the front end outside the CCTV robot is fixedly connected with a telescopic device, the output end of the telescopic device is fixedly connected with a push rod, and the output end of the push rod is fixedly connected with a hydraulic cylinder. And a limiting mechanism is arranged outside the telescopic device, a repairing mechanism is arranged at the other end of the push rod and comprises a rotating motor, the interior of the rotating motor is installed outside the push rod, the exterior of the rotating motor is in threaded connection with a connecting piece, and the interior of the connecting piece is in threaded connection with a fixing bolt. According to the pipeline repairing device, the repairing mechanism is connected with the CCTV robot, so that the jack is quickly conveyed to a repairing part through the CCTV robot, the position of the jack is flexibly controlled, the pipeline repairing efficiency is further improved, and the field pipeline repairing work is simpler, quicker and more efficient.

This invention provides an intelligent early warning device for unattended safety hazards at long-distance natural gas pipeline stations. The device includes a connecting shell and a monitoring system. The connecting shell comprises a horizontal section and a vertical section. The two ends of the horizontal section are respectively used to connect to two long-distance pipelines. A blocking component is provided between the horizontal and vertical sections. A sealing cover is provided on the vertical section. The monitoring system includes a liquid level monitoring component and a corrosion detection component. A sample is provided on the side of the sealing cover near the vertical section, and the corrosion detection component is used to detect the sample. A temporary storage pipe is provided on the horizontal section and connected to it. A first vacuum valve is provided on the blocking component, and a baffle plate is provided at the temporary storage pipe. A second vacuum valve is provided on the baffle plate. The intelligent early warning device for unattended safety hazards at long-distance natural gas pipeline stations also includes a power supply module and a communication module. This invention can determine the pipeline damage situation in advance during emergency repairs, know in advance whether there is pipeline corrosion, and make preparations in advance, thus improving repair efficiency.

The present application relates to a kind of machine learning-based underground inhomogeneous medium sound field focusing fast correction method, by constructing standard test bottom layer, and by ultrasonic phased array probe emission and acceptance data, and data processing is carried out to data, utilize deep learning model to extract time delay and amplitude attenuation etc. Channel characteristics contained in channel impulse response curve, the real-time correction of phase and amplitude is carried out to the emitted linear frequency modulation pulse signal, realize the space-time fast focusing of sound field in inhomogeneous stratum, improve the repair efficiency of chlorinated hydrocarbon contaminated soil site.

The utility model discloses a portable pipeline ultraviolet light curing lamp support which comprises a plurality of ultraviolet light curing lamps, a first fixing frame and a second fixing frame, the middle of the first fixing frame and the middle of the second fixing frame are both rotationally connected with an installation plate, a plurality of fixing pipes are evenly arranged on the two sides of the installation plate, and the fixing pipes are rotationally connected with connecting pipes. A supporting rod is arranged between the connecting pipes, a first fixing plate and a second fixing plate are arranged on the supporting rod, inserting holes are formed in the opposite sides of the first fixing plate and the second fixing plate, inserting bases are installed on the inserting holes, and a limiting plate is arranged at the position, close to the second fixing plate, of the supporting rod. A plurality of telescopic columns are evenly distributed between the limiting plate and the second fixing plate. Through cooperative use of the mounting plate, the first fixing frame and other components, the ultraviolet light curing lamp can be conveniently fixed, the position can be adjusted, and curing and repairing can be conveniently conducted on different positions of a pipeline.

The invention provides a database repairing method and device, a server and a storage medium, and the method comprises the steps: selecting a to-be-tested interface of a database, and extracting interface information from a production environment log; generating an interface test script according to the interface information; testing the to-be-tested interface according to the test script to obtain an interface test log; extracting abnormal log data corresponding to the database from the interface test log; generating a diagnosis prompt word of a preset diagnosis model according to the interface information and the abnormal log data; the diagnosis prompt word is input into a preset diagnosis model for diagnosis processing, and a structured query statement is generated; performing verification processing on the structured query statement to obtain a verification result; and after the verification result is judged to pass the verification, synchronizing the structured query statement to the database so as to complete the repair of the database, so that the repair efficiency of the database is improved.

The application discloses a kind of dashboard skin surface treatment equipment, it is related to surface processing field, including processing box, two air cylinders are installed in the lower box wall of processing box both sides, and the top of the output end of adjacent two air cylinders is jointly installed with limit seat, two limit seats are slidably connected with sliding seat, and the top of sliding seat is jointly connected with processing device, processing device includes fixing frame, slot, screw, motor, repair mechanism and cooling mechanism, slot is opened in the top side of fixing frame, screw is movably connected in fixing frame, motor is fixedly installed at one end of fixing frame, and the output end of motor penetrates one end of fixing frame and is fixedly connected at one end of screw;The dashboard skin surface treatment equipment is automatically repaired to the damaged part of dashboard skin by the cooperation of the multiple components such as air cylinder, motor, rotating disc, driver, hot air gun and spraying gun etc., effectively reduces maintenance cost and resource waste.

The application relates to the technical field of busbar cylinder dismounting, and discloses a PLC-based digital dismounting platform control method and system, wherein the method comprises the following steps: acquiring real-time bearing data of a plurality of support points of a replacement support device of a fault busbar cylinder, determining whether the support state of the replacement support device is safe, if yes, calibrating the levelness of a digital dismounting platform, supporting the fault busbar cylinder through the digital dismounting platform which meets the levelness calibration standard, then axially compressing the expansion joint of the fault busbar cylinder in a first direction to obtain a dismounting avoidance gap, and acquiring the compression displacement of the expansion joint; calculating a dynamic pressure according to the compression displacement, and compressing the expansion joint according to the dynamic pressure until the compression displacement reaches a target displacement. Through the method and the corresponding system, the redundant process of removing adjacent units in the process of dismounting the fault busbar cylinder is avoided, and the efficiency and safety of repairing the fault busbar cylinder are improved.

An underwater robot and an operating method thereof. Relate to the technical field of river channel sediment repair. Including a mobile platform, the mobile platform is driven by electricity; a medicament releasing device, the medicament releasing device includes a tape and a feeding pipe, the tape is provided with a plurality of medicament storage units along the length direction, the feeding pipe is located above the tape, the tape is in a roll shape and can be released synchronously with the movement of the mobile platform, a plurality of medicament storage units pass through from below the feeding pipe in turn; the tape is released along the horizontal direction, the feeding pipe moves reciprocatingly along the vertical direction, and the feeding pipe is used for pressing the medicament storage units into the sediment. The application can send the medicament body into the deep sediment without pumping out the water in the river channel, the operation is simple, the utilization rate of the medicament body is high, and the repair effect on the sediment is good.

The application discloses a kind of carbon fiber composite material defect repair equipment and repair method, it is related to gas cylinder repair equipment field, technical scheme is, including chassis, the middle part of chassis is set through passage, the lower portion of passage is set for supporting the support mechanism of carbon fiber gas cylinder, the upper surface of chassis one side parallelly arranged two slide rails, each slide rail is slidably connected with a slider, the clamping mechanism for clamping carbon fiber gas cylinder is fixedly arranged on slider, the middle part of clamping mechanism is set inflation passage, the inflation passage is coaxial with the axis of carbon fiber gas cylinder with gas inlet;The side of chassis is fixedly set main push rod;It further includes the guide rail fixedly set in the side of chassis, the repair mechanism for carbon fiber composite material repair is slidably arranged on guide rail.The beneficial effects of the application are: simple structure, convenient to use, fast repair speed, effectively shorten the repair time of carbon fiber gas cylinder, improve repair efficiency, reduce manpower and material cost.

The application belongs to the technical field of application software development test, and discloses an application software development test system with real-time vulnerability detection, which comprises a code real-time collection module, a multi-dimensional vulnerability detection module, a vulnerability accurate positioning module, a vulnerability risk quantitative evaluation module, a dynamic repair guidance module, a data storage module, a visual interaction module and an iterative optimization module, and each module cooperates to form a whole-process closed-loop vulnerability detection and management and control system. The application software development test system with real-time vulnerability detection is adopted, real-time capture, accurate positioning, risk evaluation and dynamic repair suggestion output of the vulnerability are realized, and the software development test efficiency and application program security are improved.

The utility model discloses a geological soil ecological restoration treatment device, which belongs to the technical field of restoration treatment, and comprises a vehicle body, a connecting block is fixedly arranged on the vehicle body, a rotating arm rod is rotatably arranged on the connecting block, a connecting rod is fixedly arranged at one end of the rotating arm rod, a plurality of soil digging teeth are fixedly arranged on the connecting rod, and a plurality of soil digging teeth are arranged on the connecting rod. The lower parts of the soil digging teeth are sharp, and a telescopic rod is fixedly arranged at the other end of the rotating arm rod; according to the utility model, the hydraulic rod stretches out and draws back to drive the first connecting block and the second connecting block to move relatively, so that the telescopic rod pushes the rotating arm rod to rotate, and the soil digging teeth on the connecting rods can rotate and lift up and down, so that the soil penetrating depth of the soil digging teeth can be flexibly controlled according to the actual condition of soil; due to the sharp design of the lower portions of the soil opening teeth, the resistance is small when the soil opening teeth enter the soil, and grooving or trepanning in the soil is facilitated.

The invention discloses a simulation model code automatic restoration method and device based on deep learning and a medium, and the method comprises the steps: S1, carrying out the preprocessing of an original model file, and forming a structured abstract syntax tree AST and a component dependency graph; error detection and repair code generation are carried out by using an improved LLM model, the error detection stage is realized by an improved CodeBERT, and the repair code stage is generated by adopting a GPT decoder; in the error detection stage, auxiliary information is used for enriching fine adjustment, and a multi-modal fusion mechanism is introduced to integrate serialized code texts and structured auxiliary information into a model training process at the same time, so that the error detection capability of the model is enhanced, and defect positions of deep relationships such as component dependence and equation logic are captured; in the code repairing stage, reinforcement learning fine tuning is used. According to the method, an automatic detection and repair scheme for common errors of Modelica model codes is provided for a user, and the development efficiency and reliability of a complex simulation model in industrial software are improved.

In order to solve the technical problems that an existing blade tenon spraying protection tool is not suitable for tenon bottom face spraying and a blade base body is prone to being scratched, the utility model provides the aero-engine compressor blade tenon cold spraying protection device. The blade tenon protection device comprises the sliding check block and the adjustable check block which are used for protecting the long side wall and the short side wall of the blade tenon respectively, and the protection requirement for a non-spraying area when the bottom face of the blade tenon is sprayed can be met. Moreover, a sealing rubber strip is arranged on the contact surface of the sliding stop block and the long side wall of the blade tenon, and a sealing rubber strip is arranged on the contact surface of the adjustable stop block and the short side wall of the blade tenon, so that the clamping and protection effects can be achieved through the sealing rubber strips, and the risk that the blade tenon is scratched due to clamping is avoided.

The utility model discloses a manual and automatic integrated maintenance door for a main push box body of an industrial kiln. The manual and automatic integrated maintenance door comprises a door plate, a door frame, a door cover and a door plate control mechanism, the door cover is installed on the box body right above the door frame, the door plate control mechanism is installed on the door cover, the door plate control mechanism comprises a lifting screw rod, a driving motor and a stroke control structure, a screw rod through hole is formed in the top of the door cover, a sealing ring is installed in the screw rod through hole, and the door plate control mechanism is installed on the door cover. A directional threaded sleeve is rotatably mounted in the sealing ring, a hand wheel, a driven wheel and a pressing cap are sequentially and fixedly mounted on a pipe body above the sealing ring, the lifting screw penetrates through the directional threaded sleeve and then is connected with the door plate, a driving motor is further mounted at the top of the door cover, and the power output end of the driving motor is connected with a driving wheel. The driving wheel and the driven wheel are connected through a belt. By means of the mode, the door plate can be controlled in a manual mode and an electric mode at the same time, and the door opening speed is increased.

This utility model discloses a cable fault location and detection device based on EEMD, relating to the field of underground cable monitoring technology. The EEMD-based cable fault location and detection device includes a Hall effect sensor, a signal amplification circuit, an ADC analog-to-digital converter module, a DSP chip, an EEMD processing unit, a classification model, and a display screen 112. The Hall effect sensor detects magnetic field signals; its output is electrically connected to the input of the signal amplification circuit. The output of the signal amplification circuit is electrically connected to the input of the ADC analog-to-digital converter module, and the output of the ADC module is electrically connected to the input of the DSP chip. The signal amplification circuit and the ADC module amplify and process the magnetic field signal, respectively, and convert the magnetic field signal into a digital signal. The output of the DSP chip is electrically connected to the input of the EEMD processing unit, and the DSP chip is used to preprocess the magnetic field signal. This EEMD-based cable fault location and detection device can determine the fault type and accurately locate the fault point.

This utility model relates to the field of drilling equipment technology and discloses a drilling device for soil thermal desorption remediation, comprising: a base and a mounting frame, with a tensioning cylinder installed inside. The output end is connected to a guide rod via a guide frame, and a motor is installed at the bottom of the guide rod. A mounting block is coaxially mounted on the motor rotor, with a drill rod and drill bit mounted at its bottom. A fan is located inside the mounting block. A resistance heating element is installed inside the drill rod, and a soil parameter sensor group is mounted on its surface. A temperature regulation module is located on the surface of the sensor group. This device achieves efficient drilling by driving the drill rod and drill bit to rotate with the motor; the resistance heating element inside the drill rod directly heats the soil during drilling, promoting the volatilization of pollutants and improving the efficiency of thermal desorption remediation; the soil parameter sensor group monitors soil parameters in real time, and the temperature regulation module adjusts the heating temperature accordingly to achieve precise temperature control and ensure the remediation effect; the fan accelerates the diffusion and discharge of volatilized pollutants. This effectively improves the efficiency and quality of soil thermal desorption remediation.

The present application provides a kind of for the permeability reaction system of organic fluorine compound contaminated soil, including permeability reaction barrier, upstream monitoring well and downstream monitoring well;Permeability reaction barrier includes several permeability reaction modules, permeability reaction module includes hollow shell, and shell is provided with water-permeable screen relative to two hollow sides respectively;Hollow shell is loaded with granular filler, and granular filler is internally provided with ultraviolet light band;Granular filler includes light-transmitting glass ball and the ceramicite of surface load titanium dioxide;Upstream monitoring well is located in the upstream of permeability reaction barrier, and downstream monitoring well is located in the downstream of permeability reaction barrier;Upstream monitoring well and downstream monitoring well are equipped with detection component in it.The present application provides a kind of for the permeability reaction system of organic fluorine compound contaminated soil, improves the operating efficiency of permeability reaction barrier in organic fluorine compound contaminated layer soil, reduces cost.

This invention discloses a tensile-strength steel-cored aluminum stranded wire, relating to the technical field of steel-cored aluminum stranded wire. The tensile-strength steel-cored aluminum stranded wire of this invention comprises at least: a steel core; a Zn-Ni-WC composite coating, electroplated on the steel core; aluminum strands, stranded on the steel core coated with the Zn-Ni-WC composite coating; and an anti-corrosion coating applied to the stranded aluminum strands. The anti-corrosion coating comprises the following raw materials in parts by weight: 60-70 parts of long-chain modified polyurethane acrylate prepolymer; 25-30 parts of acrylate isoborneol ester; 15-20 parts of dopamine-modified sustained-release microcapsules; 2-5 parts of photoinitiator; 0.5-1.5 parts of leveling agent; and 0.5-1.5 parts of dispersant. This invention, by setting a Zn-Ni-WC composite coating on the steel core and an anti-corrosion coating on the steel-cored aluminum strands, enables the prepared tensile-strength steel-cored aluminum stranded wire to possess superior corrosion resistance and ultra-long-term tensile strength retention.

The invention discloses a linkage type neutral point automatic isolation switch which comprises a protection module, the protection module comprises an installation part and a shell part, and the installation part is installed at the top end and inside the shell part; the power supply module is based on a passive driving principle, is driven by secondary side voltage of a voltage transformer and is provided with a standby power supply unit, and an external power supply is not needed; the main control module is located in the protection module; the signal acquisition module is located on the side wall of the master control module, the signal acquisition module realizes accurate control through dual signal acquisition feedback, and automatic switching between PT neutral point grounding and isolation is realized through linkage between the STM32 master control module and an electric control isolation switch and a bistable spring driving switch of the execution module. And the traditional manual PT disconnection and reconnection operation is replaced.

The application relates to a coupler hydraulic control method and system and a terminal, and relates to the field of couplers, and comprises the following steps: acquiring an internal pressure value of a coupler; when the internal pressure value is lower than a preset reference pressure value, calculating a difference value between the internal pressure value and the reference pressure value as a pressure difference value; when the pressure difference value exceeds a preset reference difference value, acquiring a pressure change duration; matching a pressure abnormality reason from a preset pressure database according to the pressure change duration; when the pressure abnormality reason is a preset liquid leakage abnormality, carrying out leakage point detection by a preset leakage point detection method to obtain a leakage area; and based on the leakage area, controlling a preset repairing device to carry out leakage point repairing by a preset repairing method. The application has the effect of improving repairing efficiency.

This patent application belongs to the field of concrete repair technology, specifically relating to a method for repairing concrete cracks based on calcium carbonate deposition induced by a composite plant urease, including the following steps: S1: extracting soybean urease and canavagoid urease; S2: preparing a composite urease solution and a cementitious liquid; S3: injecting the solution to repair the cracks. The use of composite urease improves reaction efficiency and shortens repair time. It also specifically relates to a concrete repair device, including an infusion tube, a suction tube, and a needle. One end of the infusion tube and the suction tube are respectively connected to the corresponding pump body pipe. Negative pressure is used to suction the residual solution, ensuring that the solution after subsequent injection maintains a low concentration of ammonium ions, thus ensuring reaction efficiency.

This invention discloses a grouting repair device and method for defects in brick gas ducts. The repair device includes a tee pipe, a grouting pipeline, a grouting mechanism, a drain valve, and a grouting connector. The grouting connector has an internal connecting pipe, which is connected to a long grouting pipe. This grouting repair device can repair defects such as fractures, cracks, and breaks in brick gas ducts, especially defects whose specific locations cannot be determined. During use, this grouting repair device does not require prior detection of the defect location, allowing for direct blind repair without worrying about missing any defects. It is not limited by the number and size of defects in the brick gas duct, resulting in high repair efficiency and good effect.

The invention discloses a preparation method and application of a sulfydryl modified magnesium silicate passivator, and the preparation method comprises the following steps: adding a magnesium chloride hexahydrate solution into a sodium silicate pentahydrate solution, stirring, aging, washing and drying to obtain a magnesium silicate matrix; weighing a certain amount of the magnesium silicate matrix, and dispersing the magnesium silicate matrix in a container filled with a proper amount of an organic solvent; in an inert atmosphere, mercaptopropyltrimethoxysilane is added into the container, a heating reflux reaction is carried out, and the mass ratio of the magnesium silicate matrix to mercaptopropyltrimethoxysilane is 1: (0.2-6); after the reaction is finished, filtering, washing and drying a product to obtain the sulfydryl modified magnesium silicate. According to the invention, it is found that when the mass ratio of magnesium silicate to mercaptopropyltrimethoxysilane is 1: 3, the ratio is optimal, active sites on the surface of magnesium silicate are fully utilized under the ratio, mercaptopropyltrimethoxysilane is not subjected to over-amount self-polymerization and leaves unreacted hydroxyl groups in insufficient amount, mercapto groups are introduced to form stable Cd-S covalent bonds, and the cadmium fixing ability is improved.