36results about How to "Enough time" patented technology

The invention relates to the technical field of waste liquid treatment, and discloses a continuous salt separation type high-concentration brine heat exchange process which comprises the following steps: inputting high-concentration brine into a first evaporation tank through a stock solution pipeline, and concentrating and evaporating the high-concentration brine in the first evaporation tank; when the first monitoring assembly monitors that the monitoring index value of the feed liquid in the first evaporation tank reaches a first threshold value, the feed liquid capable of separating salt is input into the relay barrel; the liquid outlet pipeline is used for inputting salt-separable material liquid in the relay barrel into the second evaporation tank; the salt separation pipeline is used for feeding salt separation feed liquid subjected to heat exchange of the shell-and-tube heat exchanger into the centrifugal assembly for salt separation; intermittent evaporation and concentration and continuous salt separation are synchronously carried out, so that the problem that high-concentration brine cannot be concentrated to a salt separation state during concentration and evaporation so as to cause insufficient treatment of the high-concentration brine can be effectively avoided, and the influence of separated salt and scale on a tank body when the evaporation concentration reaches the salt separation state can be avoided; the service life of the tank body is short; and subsequent evaporation and concentration are influenced.

This invention discloses a calibration device for radiation thermometers and its usage method. The device includes a base with a movable seat on top. The base has several clamping holes for holding a temperature measuring gun, and the movable seat is located on one side of the clamping holes. Several telescopic cylinders are rotatably connected to the base, and telescopic rods are threaded into the internal parts of the telescopic cylinders. A slider is fixedly connected to each telescopic rod, and the slider is slidably connected to the base. The telescopic rods are located on one side of the clamping holes. This device is easy to operate, can calibrate multiple radiation thermometers, has a high degree of automation, and offers high calibration efficiency.

This invention belongs to the field of spinning technology and relates to a coarse denier, low-pore polyester medium-oriented yarn and its production method. The production method involves extruding the melt from the spinneret's orifices, then sequentially passing through a windless zone, a transition zone, and a side-blown cooling zone. The windless zone and transition zone are the upper and lower sections of the same cylindrical component, respectively. Different spinnerets correspond to different cylindrical components, and the cylindrical components do not directly contact the spinnerets. The upper section of the cylindrical component has no through holes in its wall; the lower section has through holes on its wall to guide ambient air into the interior of the cylindrical component and prevent turbulence inside. The length of the windless zone is 5-6 cm, and the length of the transition zone is 6-10 cm. The percentage difference in wind speed between the side-blown cooling zones is no higher than 10%, where the percentage difference is calculated as (maximum wind speed - minimum wind speed) / maximum wind speed × 100%. This production method achieves uniform cooling of the inner and outer layers, resulting in coarse denier, low-pore polyester medium-oriented yarn with advantages such as high breaking elongation.

A display panel and a gate driving circuit are provided. The gate driving circuit utilizes the pull-down control module to periodically pull up and pull down the voltage level of the second node. The voltage level of the second node is periodically a high voltage level. This effectively reduces the time duration when the second node corresponds to the high voltage level. After the TFTs electrically connected to the second node are forward biased, the TFTs could have sufficient recovery time. This solution effectively improves the bias condition of the TFTs in the pull-down control module and thus makes the circuit more stable and raises the reliability of the circuit.

The invention provides a missile interception system, and relates to the technical field of missile interception, through reasonable layout and clear division of labor of three radar stations A, B and C. A point A is responsible for initial detection and data transmission, a point B is responsible for launching an interception missile, and a point C is responsible for short-distance accurate command, so that the interception success rate is increased; ground projection point coordinates are measured through laser ranging and radar reflection waves, the distance between an enemy satellite and the ground and a flight path equation are calculated through the triangle principle, parameters form a sky buoy equation, accurate guidance is provided for interception, the distance between a point A and a point B is 830 kilometers, data transmission and missile launching time is ensured, and the interception efficiency is improved. The point A transmits a parameter equation to the point B and the point C after identifying the enemy satellite, the point B launches a missile and reminds the point C, the point C receives the command right after finding the missile, interference is avoided, when the enemy satellite flies again, the point B and the point C have more preparation time, and the interception rate is further increased.

The invention relates to the technical field of optical end face detection, and discloses an automatic grouping detection device for the end faces of a quartz tube, comprising an operating cabinet, a guide rail is installed on the top of the operating cabinet, a placing table is installed on the top of the guide rail, a detection module is installed on the outer surface of the guide rail, and a dynamic stop detection component for reducing the depth of field effect during the detection process is arranged inside the operating cabinet, the dynamic stop detection component comprises an L-shaped power seat and a power rod for pulling the detection module by rotating itself, thereby reducing the influence of the depth of field effect on the detection accuracy, and the invention introduces a rotation mechanism of the power rod to drive the L-shaped power seat to rotate synchronously, thereby pulling the detection module to move along a specific trajectory, so that the detection module realizes a movement mode of first moving away and then approaching, and then by changing the distance between the detection module and the end face of the quartz tube, the depth of field effect is effectively improved, and in the process of moving away from the quartz tube, the detection module can capture a wider field of view.

The application discloses an embedded core-in-circuit board conveying device and a circuit board sintering equipment thereof and belongs to the technical field of circuit board sintering equipment. The embedded core-in-circuit board conveying device comprises a rack, a rotating mechanism and a plurality of bearing mechanisms, and the rotating mechanism is vertically arranged. The bearing mechanism can reciprocate along the rotating path of the rotating mechanism and is used for conveying the embedded core-in-circuit board into the sintering device. By adopting the vertically arranged rotating mechanism, the sliding direction of the bearing mechanism is changed to vertical direction rotation sliding, and the problem that the existing serial operation equipment occupies a large area can be solved. In addition, the vertical direction rotation sliding increases the sliding distance, provides more sufficient time for the heating or cooling process, and can ensure that the circuit board fully reaches the required temperature in the heating process.

A subway flood prevention alarm and door closing system includes sensors. The sensors are connected to a PLC linkage controller via a first wireless transmission module. The signal output of the PLC linkage controller is connected to the signal input of a first voice alarm device and a comprehensive monitoring system. The PLC linkage controller is also connected to an MCGS touchscreen via an RS-485 bus and a second wireless transmission module, connecting to a second voice alarm device and a roller shutter door control system. By collecting rainfall information from the sensors and transmitting it remotely via the first and second wireless transmission modules, the PLC linkage controller collects and processes rainfall information from various subway stations and issues corresponding signal commands to the second voice alarm device, the roller shutter door control system, the first voice alarm device, the MCGS touchscreen, and the comprehensive monitoring system, thereby achieving subway flood prevention broadcasting and safety protection. This system has the advantages of rapid response, high security, low false alarm rate, and wide coverage.

The invention is suitable for the technical field of marine fishery, and discloses monitoring equipment for marine fishery. The device aims to solve the technical problem that in the prior art, fish school monitoring limitation is large, the device comprises a lower shell and an upper shell, the lower shell and the upper shell are fixed together, a monitoring assembly is installed on the lower shell, and an air cavity system is arranged in the upper shell and the lower shell; according to the device, seawater is decomposed to generate water-insoluble gas for gas filling of the whole gas cavity system, the whole gas cavity system can be used for changing the buoyancy of the whole device, the buoyancy of the device can be automatically increased after the electricity of the device is used up, and the device can be used for water-insoluble gas filling of the whole gas cavity system. The equipment floats to the sea surface and is charged through direct solar radiation, and after charging is completed, the equipment can be automatically deflated, buoyancy of the equipment is reduced, the equipment enters the seabed again and suspends, and the growth condition and distribution of seabed fish schools are flexibly monitored.

The utility model discloses a device for pre-curing a tinplate two-dimensional code, which relates to the technical field of tinplate processing, and comprises a roller feeding frame and a material conveyor which are distributed in an L shape, the roller feeding frame is positioned at one end of the material conveyor, and the roller feeding frame is positioned at the other end of the material conveyor. An automatic feeder is further arranged above the joint of the roller feeding frame and the material conveyor, and the end of the automatic feeder is in transmission fit with a feeding driver. Wherein a self-adaptive laser marking device, an icon code spraying device and an ultraviolet curing device are sequentially arranged above the material conveyor in the moving direction of materials, and the self-adaptive laser marking device is located on the side close to the automatic feeder; according to the utility model, through the sliding fit between the X-axis sliding rail and the limiting sliding seat, when the material conveyor drives the material to move, the gantry bracket can drive the laser marking machine to synchronously move along with the moving direction of the material, the marking operation is completed in the moving process, and the normal transmission of the material does not need to be suspended, so that the marking efficiency is improved.

The utility model discloses a concrete stirrer for a concrete production line, which relates to the field of concrete and comprises a first shell, a second shell is arranged above the first shell, a toothed plate is rotatably mounted on the lower surface of the second shell, and the toothed plate is rotatably mounted in the middle of the upper surface of the first shell. A central column is arranged in the first shell, a top plate is fixedly mounted at the top end of the central column, the bottom end of the central column is rotationally clamped in the middle of the bottom surface of the first shell, and the top plate is rotationally mounted in the middle of the top end of the first shell. After the materials are fully mixed, the materials are conveyed into the first shell, wet mixing is completed in the first shell, then the materials are discharged from the discharging port, dry and wet separation is achieved, the materials are fully mixed firstly, and then water is added, so that the stirring uniformity can be improved, and the situation that the large aggregates are non-uniformly mixed is prevented.

This utility model relates to a cooling mechanism for the slide rail of a gantry machine tool, including a slide saddle, a slide ram, and a cooling assembly. The slide ram moves up and down within the inner cavity of the slide saddle via a drive mechanism, and the guide rail surface of the slide ram contacts the inner cavity of the slide saddle. The cooling assembly includes cooling plates for cooling the guide rails at the four corners of the slide saddle and a cooling machine for supplying coolant to the cooling plates through a pipe assembly. This utility model relates to the field of gantry machine tool technology. This gantry machine tool slide rail cooling mechanism has a cooling system fixed on both sides of the slide saddle. The cooling system consists of cooling plates, pipes, connectors, etc. The entire cooling system is supplied with coolant by the cooling machine. The coolant circulates through pipes into the circulation groove of the cooling plates and finally flows back to the cooling machine, forming a circulating cooling system for the slide saddle and slide ram guide rails. This reduces the thermal deformation of the slide saddle and slide ram, thereby improving the machining accuracy of the machine tool.

The invention provides a pug extrusion force uniformizing device and a pug extrusion force uniformizing method for processing a honeycomb ceramic structural body, which can effectively solve the quality problem of the honeycomb ceramic structural body caused by non-uniform extrusion force when the honeycomb ceramic structural body is produced by adopting an extruder. The extruding machine extension body is arranged between an extruding head of an extruding machine and a honeycomb structure body extruding die, the extruding machine extension body comprises a smooth inner cavity, and the two ends of the inner cavity are communicated with a discharging port of the extruding head and a feeding port of the honeycomb structure body extruding die respectively. A first spoiler is arranged on the side, close to the extrusion head, of the inner cavity, a second spoiler is arranged on the side, close to the honeycomb structure body extrusion die, of the inner cavity, and variable-diameter holes are formed in the first spoiler and the second spoiler.

The invention relates to an underwater tunnel transverse smoke exhaust adjusting device and method for intervening the smoke flow state, the device comprises two passing lanes arranged in an underwater tunnel, an emergency evacuation corridor and a smoke exhaust pipeline, one side of each passing lane is provided with a plurality of smoke exhaust ports communicated with the smoke exhaust pipeline, and the interiors of the smoke exhaust ports are connected with smoke exhaust adjusting assemblies through fastening connecting assemblies; a short blade valve plate driven by a driving motor I is rotationally arranged in a mounting frame I in the smoke exhaust adjusting assembly, a long blade valve plate driven by a driving motor II is rotationally arranged in a mounting frame II, and the short blade valve plate is perpendicular to the long blade valve plate; cooperative adjustment of a smoke layer downward inclination angle controlled by a long-blade valve plate and a smoke steering angle controlled by a short-blade valve plate intervenes in smoke flow power behavior; according to the tunnel transverse smoke exhaust adjusting device, through the limiting conditions of the downward inclination angle and the steering angle, based on the relation between pressure and speed distribution and smoke amount distribution, the resistance coefficient and the like, the opening degrees of long and short valve plates in all smoke exhaust ports are obtained, dynamic regulation and control are achieved, and the smoke exhaust effect is improved.

The invention discloses a method and a device for determining a fault state of a cable joint, and electronic equipment. The method comprises the following steps: acquiring target data corresponding to a cable joint in a power transmission and transformation system; determining spatial-temporal characteristics corresponding to the power transmission and transformation operation data; according to the operation data of the cable joint, determining an operation age limit characteristic corresponding to the cable joint; determining a cable defect index corresponding to the cable joint according to the predetermined item data and a cable defect relationship corresponding to the predetermined item; determining weight values of the cable joint in a plurality of fault states; and determining a target fault state of the cable joint from the plurality of fault states according to the spatial-temporal characteristics, the operating age limit characteristics, the cable defect index and the weight values corresponding to the plurality of fault states. According to the method and the device, the technical problem that the judgment accuracy is low when the fault state of the cable joint is judged by using massive and discrete cable joint related data in the related technology is solved.

The utility model belongs to the technical field of gear polishing and deburring, and particularly discloses a gear deburring polishing device which comprises a supporting frame, two supporting blocks are fixedly connected to the front side of the supporting frame, and a main shaft is rotationally connected between the two supporting blocks. One end of the main shaft rotationally penetrates through the interior of the left side supporting block and extends to the exterior of the left side supporting block, the surface of the end, extending to the exterior of the left side supporting block, of the main shaft is fixedly sleeved with an intermittent disc, a first motor is fixedly connected to the left side of the supporting frame, and the output end of the first motor is fixedly connected with a first limiting disc; the side, away from the first motor, of the first limiting disc is fixedly connected with a rotating disc, the surfaces, located on the opposite sides of the two supporting blocks, of the main shaft are fixedly sleeved with a cross block, and the cross block is in a cross shape, so that the deburring efficiency is improved, the probability of damage to the gear during deburring is greatly reduced, and the damage proportion during gear machining treatment is reduced; and unnecessary loss is reduced.

The utility model discloses impurity filtering equipment for high-oleic-acid peanut oil, and belongs to the technical field of peanut oil production. Comprising a barrel provided with a top cover, a spiral filter plate is rotationally arranged on the upper portion of the interior of the barrel, and a spiral oil guide groove is formed below the spiral filter plate; an oil collecting pipe is arranged in the center of the spiral filter plate, and an inner channel of the oil collecting pipe is communicated with the spiral oil guide groove. The filtering device is simple in structural design and good in filtering effect; the filtering area is increased, the filtering path is prolonged, and a better filtering effect is obtained; in addition, a large amount of impurities on the spiral filter plate are not easy to accumulate, and the overall filtering efficiency is higher.

The present application relates to waste liquid treatment technical field, disclose a kind of continuous salt separation type high concentration brine heat exchange process, comprising the following steps: by original liquid line to first evaporation tank input high concentration brine, concentrated evaporation high concentration brine in first evaporation tank;When first monitoring component monitors the monitoring index value of material liquid in first evaporation tank reaches first threshold value, input salt separation material liquid into relay bucket;Liquid outlet line input salt separation material liquid in relay bucket into second evaporation tank;Salt separation line is sent into centrifugal component after salt separation material liquid of tube heat exchanger heat exchange and carries out salt separation;Through intermittent evaporation concentration and continuous salt separation are carried out simultaneously, can effectively avoid that high concentration brine cannot be concentrated to salt separation state when concentrating evaporation, leading to the problem that high concentration brine is not fully treated, also can avoid the impact of the salt and scale separated when evaporation concentration reaches salt separation state on tank body, leading to the problem that tank body service life is short and subsequent evaporation concentration is affected.

This utility model discloses a pure water membrane filtration device, belonging to the field of pure water filtration technology, aiming to solve the technical problem of insufficient flexibility in replacing filter elements in existing water filtration equipment. The pure water membrane filtration device includes a housing, within which six filter elements are arranged: a primary filter element, a secondary filter element, a secondary filter element, a tertiary filter element, a quaternary filter element, and a quinary filter element. The primary and secondary filter elements are of the same model and perform the same level of filtration. The filtration precision of the primary or secondary filter element increases progressively from the secondary, tertiary, quaternary, and quinary filter elements. By setting up primary and secondary filter elements, this pure water membrane filtration device can automatically switch to the secondary filter element when the primary filter element becomes clogged, avoiding water supply interruptions caused by the clogging of a single filter element. This provides users with ample time to replace filter elements and ensures continuous water supply.

This invention discloses an organic waste gas RTO regenerative thermal oxidation treatment device and method for waterproof membrane production in the field of waste gas treatment technology. It includes an annular heat storage block, a combustion chamber, an external drive mechanism, an external membrane production machine, an external waste gas emission mechanism, an external waste gas storage machine, and an airflow distribution chamber. The waste gas emission mechanism is connected to both the waste gas storage machine and the airflow distribution chamber. Based on the rate at which the waste gas is generated by the membrane production machine, this invention selects whether to treat the waste gas directly or to store a certain amount of waste gas before treatment, reducing wear and tear on the waste gas storage machine, minimizing waste gas leakage, and increasing treatment efficiency. Furthermore, the annular heat storage block circulates through waste gas, air, and tail gas, enabling this invention to complete the heat storage-recirculation-preheating cycle within a single heat storage chamber, avoiding repeated valve switching, reducing process complexity, and improving process stability.

The application relates to the technical field of tea processing, and particularly discloses a method for symbiotic tea making of natural solid material and tea leaves and a product. The method comprises the following steps: S1, adopting tea leaf raw materials capable of fermentation, post-fermentation or aging; S2, adopting one or more whole pieces of natural solid material, which is not subjected to dyeing, glue injection, pickling or chemical optimization treatment; S3, performing cleaning, sterilization and air-drying pretreatment on the natural solid material; S4, placing the pretreated whole piece of natural solid material in the same coexistence space as the tea leaves for joint storage; S5, performing fermentation, post-fermentation or aging on the tea leaves in a suitable environment; and S6, aging and drying. The symbiotic tea making product can be used in the fields of high-end tea market, collection and special tea drinking, has the advantages that the tea leaves are more evenly fermented and aged, the tea soup quality is softer and more mellow, and the high-end recognition and collection value of the product can be significantly improved through the synergistic transformation of the natural solid material.

The invention provides a novel rice and fish planting facility which comprises a pond and a steel structure frame, a bin body made of canvas is installed in each installation area, and the multiple bin bodies are divided into a breeding bin and a precipitation bin; a first water body exchange port is formed in the side wall of each breeding bin, the precipitation bins are connected in sequence, all the breeding bins are connected with the first-stage precipitation bin, a second water body exchange port is formed in the last-stage precipitation bin, and the bottoms of the precipitation bins are connected with the dirt collecting bin through the dirt discharging assembly; and floating plate assemblies are further arranged in the precipitation bin and on the outer side of the steel structure frame. Hydroponic rice planting and an ecological captive breeding system are combined to form a novel rice and fish comprehensive planting and breeding mode, sufficient time and space are provided for sedimentation of solid waste by designing a multi-stage sedimentation bin, the in-situ purification efficiency and planting and breeding benefits of breeding tail water are effectively improved, the breeding bin and the sedimentation bin adopt square canvas pools, and the breeding bin and the sedimentation bin are convenient to use. The space utilization rate is improved, and meanwhile the manufacturing cost is reduced.

The utility model discloses a marine flue gas desulfurization purification device which comprises a flue gas access pipe, a flue gas discharge pipe, a main desulfurization purification device and an auxiliary desulfurization purification device, the exhaust end of the flue gas access pipe is connected with a first three-way valve, and the access end of the flue gas discharge pipe is connected with a second three-way valve. The connecting-in end of the main desulfurization purification device is connected with a first connecting-in pipe, and the connecting-in end of the auxiliary desulfurization purification device is connected with a second connecting-in pipe. With the adoption of the structure, the desulfurization purification device and the auxiliary desulfurization purification device are arranged in the flue gas pipeline, and the first three-way valve and the second three-way valve can be synchronously driven through the synchronous driving assembly, so that diversion can be carried out simultaneously, and when one purification device is maintained, the secondary desulfurization purification device can be maintained; according to the flue gas purification device, the channel of one purification device can be switched, so that flue gas passes through the other purification device, and the purification device can be maintained without shutdown.

The present invention provides an application of myristic ether in pest control, which relates to the technical field of pest control. The LC of myristic ether to locusts at 24h, 48h, 72h and 96h 50 The concentrations of myristic acid and bamboo vinegar in the water are 13299.14 μg / mL, 1500.75 μg / mL, 439.72 μg / mL and 194.57 μg / mL, respectively. The drip irrigation liquid used to treat crops after sowing and in the seedling stage can induce the crops to avoid pests. The present invention overcomes the deficiencies of the prior art, verifies that myristic acid can directly cause stomach poisoning to locusts, and has a killing effect. Myristic acid can also act on plant growth to avoid locusts and suppress their appetite, providing an important reference for the comprehensive prevention and control of locusts, and can reduce the use of chemical agents to a certain extent, reduce pollution, and comprehensively improve the prevention and control effect of locusts.

The invention discloses a video monitoring scene intelligent analysis and event classification system based on semantic segmentation. The system comprises a data preprocessing module, a preliminary classification module, a weight generation module and a correction and detection module. The data preprocessing module is used for acquiring and preprocessing original video data of a video monitoring scene, and extracting scene semantic features of the preprocessed video data through a semantic segmentation model; and the preliminary classification module is used for inputting the scene semantic features into a classifier for performing preliminary event classification to obtain an initial classification result. The invention relates to the technical field of video monitoring and intelligent analysis. According to the video monitoring scene intelligent analysis and event classification system based on semantic segmentation, the coupling degree between modules of the system is low, the semantic category number, the classifier structure and the updating strategy can be freely configured according to different monitoring tasks, and the system is suitable for various application scenes such as traffic flow analysis, personnel gathering monitoring and industrial operation anomaly detection.

The present application discloses a battery pack cooling system capable of preventing propagation of thermal runaway of a battery pack and a working method thereof. The battery pack cooling system capable of preventing the propagation of the thermal runaway of the battery pack includes at least a cooling fluid guide assembly, at least a refrigeration element, at least a heat exchange element, at least a thermal runaway sensing element, and at least a fluid diversion assembly. The cooling fluid guide assembly includes a plurality of cooling fluid circulation pipelines and at least an electronic water pump. The electronic water pump is configured to be communicatively connected to a controller of a vehicle and is arranged on the cooling fluid circulation pipelines, the refrigeration element communicates with the cooling fluid circulation pipelines, the heat exchange element communicates with the cooling fluid circulation pipelines. The thermal runaway sensing element is configured to be communicatively connected to the controller. The fluid diversion assembly includes at least a fluid guide channel and at least a fluid diversion valve. The fluid diversion valve is set as a multi-way solenoid valve, and has at least two interfaces configured to communicate with the cooling fluid circulation pipelines, and at least one interface communicating with one end of the fluid guide channel.

This invention relates to the field of tofu product technology, and in particular to a method for producing granular suspension-filled soft tofu; the method includes the following steps: A. Boiling soy milk with a soluble solids content of 12-14°Brix and cooling it to obtain a cold soy milk; B. Adding egg liquid to the cold soy milk from step A and mixing it to obtain a cold soy milk-egg mixture; C. Chopping and cutting the cold soy milk from step A with konjac flour to form a viscous consistency, and then mixing it with the cold soy milk-egg mixture from step B to obtain a thick suspension; D. Adding edible granules to the thick suspension from step C, then adding a coagulant and mixing it, and finally filling and sterilizing to obtain granular suspension-filled soft tofu; the granular suspension-filled soft tofu of this invention has an elastic, resilient and delicate texture, and can develop a tiger skin effect when fried. At the same time, the granular material is evenly distributed, forming a unique texture that is crispy on the outside and tender on the inside with a chewy texture.

According to an embodiment of the present disclosure, provided is a cleaner which comprises: a main body having a cylindrical shape; a cyclone unit which is provided inside the main body so as to separate dust from air suctioned into the main body; an extension duct which communicates with the cyclone part and extends from the main body; a suction nozzle which is coupled to the extension duct and suctions dust; a first battery unit which extends from the main body and supplies electric power so that the cyclone unit can suction air; and a second battery unit which supplies electric power to the cyclone unit and is slidably coupled to the extension duct. According to an embodiment of the present disclosure, the usage time of the cleaner can be increased, and the fatigue that a user feels can be minimized even when the usage time is increased.

The invention relates to the technical field of crystal material preparation, in particular to a ternary layered selenide Ge < 0.85 > Bi < 2.15 + x > Se < 4 > semiconductor material and a preparation method thereof. The preparation method comprises the steps that germanium powder, bismuth powder and selenium powder are weighed according to the molar ratio in the chemical formula Ge0. 85Bi2.15 + xSe4, x is larger than or equal to 0 and smaller than or equal to 0.06, the weighed raw materials are evenly mixed and then placed in a quartz tube, and the quartz tube is sealed after vacuumizing; placing the vacuum-sealed quartz tube in a heating furnace, raising the temperature from room temperature to 900-950 DEG C, preserving heat for 12-24 hours at the temperature, and taking out the quartz tube from the heating furnace for quenching and cooling after the heat preservation is finished; and placing the quenched and cooled quartz tube in the heating furnace again, raising the temperature from room temperature to 540-560 DEG C, preserving heat for 3-5 days at the temperature, and performing annealing treatment to obtain the ternary layered selenide Ge0. 85Bi2.15 + xSe4 semiconductor material. According to the preparation method, the technical problem that a GeBi2Se4 system is difficult to obtain a single phase is successfully solved by accurately regulating and controlling the proportion of Ge / Bi and adopting a high-temperature quenching and low-temperature long-time annealing process.

The invention relates to a contactor, characterized in that, it comprises an enclosed space with its interior containing an arc extinguishing medium or being configured as vacuum, the enclosed space being separated by a movable contact head into two chambers, the movable contact head is provided with hollow contact end enabling the two chambers to communicate, at least one of the chambers is provided with a static contact head, the static contact head is provided with hollow or a solid contact end, the movable contact head implements reciprocal movement, the contact end of the movable contact head is receivably engaged with and disengaged from the contact end of the static contact head, the two chambers are alternately compressed and expanded, the arc extinguishing medium moves back and forth at arc gaps between the movable contact head and the static contact head through the hollow part of the movable contact head, and is circulated between the two chambers, providing a contactor and its self-circulating reciprocal synchronous arc extinguishing pump to turn ON, turn OFF of the contactor and its synchronous arc extinguishing.