345results about How to "High maintenance cost" patented technology

The invention discloses an electric power facility visual monitoring system and method, and relates to the technical field of electric power facility operation and maintenance, the system comprises the following components: a multi-source heterogeneous data acquisition module, a multi-source heterogeneous data processing module, a real-time risk assessment and maintenance strategy adjustment module and a visual display module; according to the method, the electric parameters, the environment data, the image video data, the audio data and other multi-source heterogeneous data are integrated, the intelligent fusion algorithm and the association analysis model are utilized, the potential association relationship among different types of data is deeply mined, and therefore the operation condition of the electric power facility can be reflected more comprehensively and accurately, and the operation efficiency of the electric power facility is improved. According to the method, the accuracy and integrity of monitoring data are improved, the system can timely find and pre-judge potential risks, powerful decision support is provided for operation and maintenance personnel, and safety risks and maintenance cost increase caused by incomplete or inaccurate monitoring are effectively avoided.

The invention provides a business demand confirmation method and system based on a cloud platform, and relates to the technical field of cloud platforms, and the method comprises the steps: building a business process engine on the cloud platform according to a business scene and a business rule, carrying out the visual modeling of a business demand through the business process engine, and generating a standardized business demand model; deploying a demand verification service on the cloud platform, and through a formalized verification method of control flow analysis or data flow analysis and in combination with the business domain ontology model, performing automatic verification on the business demand logic represented in a formalized manner, and generating a demand verification report; and according to the demand verification report, judging whether the business demand logic has semantic contradictions or logic vulnerabilities, and when the semantic contradictions or logic vulnerabilities are detected, correcting the business demand logic which does not pass the verification in combination with the business domain ontology model. And deploying a demand collaboration service on the cloud platform, and publishing the corrected business demand logic in the form of a standardized interface for the collaboration party to subscribe.

The invention relates to the field of air filtration, in particular to a method for rapidly preparing ZIF-8 / polypropylene melt-blown cloth fiber membranes in batches at low cost. Aiming at the problems of high cost, long preparation time, complex process and the like of the existing method for growing ZIF-8 on the surface of polypropylene melt-blown cloth to improve the air filtering performance, the invention provides a method for rapidly preparing ZIF-8 / polypropylene melt-blown fiber membranes in batches at low cost. The preparation method comprises the following steps: firstly, pretreating the surface of polypropylene melt-blown cloth by using an inorganic aqueous alkali solution, then sequentially putting the melt-blown cloth into a zinc ion aqueous solution and a 2-methylimidazole / N, N-dimethylformamide mixed aqueous solution under an ultrasonic condition, and drying to prepare the ZIF-8 / polypropylene melt-blown fiber membrane. According to the preparation method, water is taken as a main solvent, and a small amount of N, N-dimethylformamide is added into the water, so that rapid growth on polypropylene melt-blown cloth at a small molar ratio of 2-methylimidazole to zinc nitrate hexahydrate is realized, and the preparation method is suitable for large-scale industrial production for air filtration.

The utility model relates to the technical field of sewage treatment, and discloses aquaculture sewage treatment equipment which comprises a sewage treatment barrel, a barrel cover is clamped at the upper end of the sewage treatment barrel, a water distribution mechanism is movably connected to the middle of the upper end of the barrel cover in a penetrating mode, and a driver is fixedly connected to the right portion of the upper end of the barrel cover. A first gear is fixedly connected to the output end of the driver in a penetrating mode, pull rings are fixedly connected to the middle of the left end and the middle of the right end of the barrel cover, a sealing groove is jointly formed between the peripheries of the lower end of the barrel cover, and a driving rod is fixedly connected to the middle of the lower end of the water distribution mechanism; and a plurality of filtering frames are movably connected to the outer surface of the driving rod in a penetrating manner through bearings. According to the aquaculture sewage treatment equipment disclosed by the utility model, by arranging the filter frame and the cleaning brush, the filter screen is convenient to clean, blockage is avoided, the filtering effect of the filter screen is enhanced, and by arranging the water distribution mechanism, sewage can be uniformly distributed, and the sewage treatment efficiency is enhanced.

The present invention discloses a multifunctional composite sewage treatment and purification device, and relates to the technical field of sewage treatment. The sewage treatment and purification device comprises a storage table and a reaction chamber, and also comprises a purification device; wherein, the purification device comprises a purification box, a guide frame, a fixed rod, a sleeve, a wind shield, a guide plate and a liquid storage frame, the purification box is fixedly installed above the reaction chamber, the guide frame is fixedly installed below the purification box, an air inlet is opened below the guide frame, the fixed rod is fixedly installed on the surface of the air inlet, the sleeve is rotatably installed on the surface of the fixed rod, and the wind shield is fixedly installed on the surface of the sleeve. The sewage treatment and purification device can realize the control of the flow rate of harmful gases, avoid excessive flow of harmful gases, resulting in insufficient contact with disinfectants, and at the same time, the filter plate can effectively prevent the disinfectant from splashing out of the interior of the liquid storage frame, thereby increasing the subsequent maintenance cost.

The utility model provides a servo hydraulic cylinder pressure-bearing device which comprises a sleeve, and the top of the sleeve is fixedly connected with a rolling mill base. The bottom of the sleeve is detachably connected with a cylinder body of the hydraulic cylinder; the outer side of the sleeve is sleeved with a pressure bearing pad, the bottom of the pressure bearing pad is attached to the top face of the cylinder body, and a jacking assembly is arranged at the top of the pressure bearing pad and used for jacking the pressure bearing pad downwards. The servo hydraulic cylinder pressure-bearing device has the advantages that counter-acting force of the servo hydraulic cylinder in the rolling process is borne through the sleeve and the pressure-bearing pad, the pressure-bearing pad downwards abuts against the cylinder body under the action of the abutting assembly, more counter-acting force is borne, the sleeve is effectively protected and prevented from deforming, the service life of the pressure-bearing device is greatly prolonged, and the service life of the servo hydraulic cylinder is prolonged. And the maintenance and replacement cost of the pressure-bearing device is reduced.

The utility model belongs to the field of automobile wire harness production, and particularly relates to a wire harness cutting device for automobile wire harness production, which comprises a cutting table. The top end of the cutting table is fixedly connected with the bottom end of a supporting frame, electric push rods are arranged on the two sides of the top end in the supporting frame, the top end in the supporting frame is fixedly connected with the bottom ends of the electric push rods, the bottom ends of the electric push rods are fixedly connected with the top end of a first fixing block, and a buffering mechanism is arranged at the top end of the cutting table. The buffering mechanism comprises a second fixing block, and the second fixing block is arranged below the first fixing block. Through the design of the buffering mechanism, the function of buffering the tool bit is achieved, and the problems that an existing cutting-off device is not provided with a buffering assembly for the tool bit, when cutting-off machining is conducted for a long time, downward pressure is extremely prone to damaging the tool bit, cutting cannot be conducted, and therefore the service life of the tool bit is shortened, and the machining cost is reduced are solved. And the later maintenance cost is increased, and the protection of the tool bit is improved.

The invention discloses an underwater inspection robot with an underwater net cage damage position indicating device. The indicating device mainly comprises an upper clamping jaw and a lower clamping jaw, the first locking mechanism is used for keeping the lower clamping jaw and the upper clamping jaw in an open state; the second locking mechanism is used for keeping the lower clamping jaw and the upper clamping jaw in a clamping state when the first locking mechanism is unlocked; a buoy, a connecting wire and a wire coil; the third locking mechanism is used for fixing the wire coil relative to the mounting seat when the first locking mechanism enables the lower clamping jaw and the upper clamping jaw to be kept in an open state; during use, when the underwater inspection robot finds a damaged part of the underwater net cage, the first locking mechanism is unlocked, the second locking mechanism enables the lower clamping jaw and the upper clamping jaw to keep a clamping state, the third locking mechanism is unlocked, the connecting wire is released from the wire coil under the buoyancy action of the buoy, and finally the buoy emerges from the water surface. The damage position can be accurately marked, and manual repair can be conveniently guided in time.

The invention discloses a method for capturing carbon dioxide to participate in biomass gasification to prepare green methanol, and particularly relates to the field of biomass energy utilization, a gasification furnace body, a dust removal heat exchanger and a purification water washing box are included, and the exhaust end of the purification water washing box is connected with a high-voltage electrostatic decoking device through a pipeline; the exhaust end of the high-voltage electrostatic decoking device is connected with a synthetic gas cabinet, the synthetic gas cabinet is connected with a gas desulfurization and dechlorination purifier through a pipeline, and the exhaust end of the gas desulfurization and dechlorination purifier is connected with an effective gas reforming transformation box through a pipeline; and the effective gas reforming transformation box is connected with a gasifying agent inlet at the bottom end of the gasifier body through a pipeline. Carbon dioxide discharged in the secondary reforming transformation process of gasified synthesis gas is captured and fed into the gasifying agent at the front end, the carbon dioxide is doped into the gasifying agent, so that the oxygen proportion is reduced, a small amount of oxygen can promote pyrolysis and gasification reaction of biomass, the yield of hydrogen is increased, and waste gas utilization of the carbon dioxide is achieved.

A novel flue gas recycling system for four cooling sections of a circular cooler comprises the first cooling section, a first cooling fan, a second cooling section, a second cooling fan, a third cooling section, a third cooling fan, the fourth cooling section and a cooling pipeline of the circular cooler. The first cooling section, the second cooling section, the third cooling section and the fourth cooling section are distributed in the circumferential direction and connected into a continuous cooling loop through an overall rotary frame. The first cooling section, the second cooling section and the third cooling section are respectively connected with a first cooling fan, a second cooling fan and a third cooling fan; the fourth cooling section is connected with a cooling pipeline; and the second cooling fan extracts flue gas of the fourth cooling section of the circular cooler through the cooling pipeline and blows the flue gas into the second cooling section of the circular cooler to cool pellets. According to the novel flue gas recycling system for the four cooling sections of the circular cooler, a fourth cooling fan is omitted in the hot air process of the circular cooler, waste gas of the four cooling sections is extracted through a second cooling fan to cool pellets, the flue gas recycling efficiency is improved, and the cost is saved.

The invention provides a fault detection circuit, system and method for buses and switch tubes between the buses, multiple groups of switch tubes are connected between positive and negative buses, the detection circuit comprises a switch module and a voltage-dividing sampling detection module, and the voltage-dividing sampling detection module comprises a power supply and a voltage-dividing resistance network. The divider resistance network comprises a detection resistor with a voltage dividing function, and the switch module is arranged to connect the two ends of the detection resistor to a positive bus and a negative bus respectively when the switch module is closed, so that the detection resistor is short-circuited when the positive bus and the negative bus are short-circuited. And the sampling voltage output by the voltage division sampling detection module is different from the sampling voltage output when the positive and negative buses are not short-circuited. The bus voltage short-circuit detection function and the switch tube short-circuit and open-circuit detection function between buses are achieved.

The utility model relates to the technical field of water quality monitoring and early warning equipment, and discloses water quality on-line monitoring and rapid early warning equipment which comprises a waterproof shell, an air bag is fixedly connected to the outer wall of the waterproof shell, a fixing rod is fixedly connected to the upper surface of the waterproof shell, and the fixing rod is not fixedly connected with a connecting rod. A connecting block is fixedly connected to the lower surface of the connecting rod, a first hinge seat is fixedly connected to one side of the outer wall of the connecting block, a first hydraulic rod is arranged in the first hinge seat, a first fixing shaft is fixedly connected to the output end of the first hydraulic rod, and a photovoltaic cell panel is fixedly connected to one end of the first fixing shaft. The photovoltaic cell panel is driven by the hydraulic rod to move, the inclination angle of the photovoltaic cell panel is changed, the light receiving area is increased, the conversion efficiency is improved, sufficient electric energy is provided for the device, the waterproof jacket and the connecting line are arranged on the outer wall of the waterproof shell, the recall speed of the device is increased, the working efficiency is improved, and the maintenance cost is reduced.

The invention discloses a preparation method of a pole piece for improving lithium precipitation at an arc position of a winding type battery cell and the battery cell, and relates to the technical field of winding type lithium ion batteries, the preparation method of the pole piece comprises the following steps: setting a rolling program according to a selected winding battery cell model, and setting the rolling pressure of an arc area to be smaller than that of a non-arc area; and rolling the current collector coiled material coated with the active substance according to a rolling procedure, and cutting to obtain the pole piece. According to the method, the roller pressure at the arc is reduced, so that the arc is thicker and lower in compaction, and the positive and negative plates are thicker and lower in compaction at the arc, so that under the action of the winding force, the fitting degree between the positive and negative electrodes of the winding type arc and the diaphragm is obviously improved. And at the corner and the position with relatively small compaction density of the pole piece, the migration kinetics of lithium ions is guaranteed, and lithium separation can be avoided under high magnification.

The invention discloses a grounding carbon brush device of a wind driven generator and an installation method thereof.The grounding carbon brush device comprises a power generation box, a placement box is arranged on one side of the power generation box, a rotating shaft is arranged in the power generation box in a penetrating mode, a motor shell is arranged at the bottom of the placement box, and a heat dissipation piece is arranged in the motor shell; a mounting ring is arranged in the placement box, a connecting column is arranged on one side of the mounting ring, the other side of the connecting column is fixedly connected to the power generation box, the mounting ring is connected with a supporting block, and a mounting groove is formed in the supporting block in a penetrating mode. A good working environment can be provided for the supporting block and the carbon brush, extrusion force can be continuously generated on the carbon brush through parts such as a limiting column, a limiting plate, an extrusion plate, a spring, a connecting block and a first rack, and even if the carbon brush is abraded, tight attachment of the carbon brush and the rotating shaft can be kept.

The invention discloses an electrical control cabinet for an airtight test board of a hydraulic pipeline assembly, and relates to the technical field of electrical control cabinets. The device comprises a device body, a square groove is formed in the right side of the device body, an electrical assembly is arranged in the device body, a plurality of electrical wires are arranged at the bottom of the electrical assembly, a heat dissipation assembly is arranged at the top of the device body and communicates with the interior of the device body, and an airtightness detection assembly is arranged on the left side of the outer wall of the device body. A fixing plate is fixedly installed at the bottom of the device body, and electric push rods are fixedly installed at the four corners of the bottom of the fixing plate and composed of telescopic ends and fixed ends. According to the invention, the direction of the airtightness detection assembly is constantly changed in the testing process of the hydraulic pipeline assembly so as to fit the practical situation that the pipeline is easily interfered by the outside and is pulled to a certain extent in the practical application, so that the airtightness detection data is ensured to be more practical, and the durability of the hydraulic pipeline assembly is detected at the same time.

The invention discloses a liquid slagging boiler with a modular combustion chamber and a peak regulation method, and belongs to the technical field of fire coal consumption reduction of thermal power generating units. According to the method, on the basis of a combustion chamber of an existing liquid slagging boiler, the combustion chamber is divided into four modular combustion chambers with the same size, an independent fuel nozzle and an independent draught fan are installed on the outer side of each modular combustion chamber, so that each modular combustion chamber can be independently used, and in the peak regulation process, according to the peak regulation requirement, the modular combustion chambers can be used independently; and determining the use number of independent combustion chambers. The partition screens and the modular combustion chambers in the boiler are of detachable and splicable structures, so that each modular combustion chamber can be detached from the liquid slagging boiler to be replaced and spliced. According to the boiler, operation of the combustion chamber module can be accurately controlled according to actual load requirements, energy consumption is effectively reduced under the low-load condition, and the combustion efficiency is improved; and when the load is increased, sufficient steam supply is ensured.

The invention relates to an air suspension blower with an early warning function and an early warning method, and belongs to the technical field of early warning of air suspension blowers. The air suspension blower comprises a host, a data acquisition and processing module, an early warning module, a main controller and a frequency converter; in the host, a detection part is also mounted at the right end of the rotor and is used for detecting the displacement of the rotor; the data acquisition and processing module is used for acquiring axial and radial displacement signals of the detection part, processing and converting the displacement signals and then transmitting the displacement signals to the main controller; the main controller is used for sending an early warning instruction to the early warning module based on the received axial and radial displacement signals and controlling the frequency of the frequency converter; and the early warning module is used for performing early warning according to the early warning instruction sent by the main controller. According to the air blower and the early warning method, the displacement of the rotor can be detected and early warned, equipment is correspondingly monitored and early warned in advance, the rotor can be prevented from being seriously damaged, and the service life of the equipment is prolonged.

The invention relates to the field of waste gas purification, in particular to a waste gas anhydrous treatment device which comprises a gas inlet unit, a heat source unit, a reaction unit, a cooling unit, a slag collecting unit and a tail gas discharging unit. The gas inlet unit comprises a gas inlet pipe, and the gas inlet pipe can convey waste gas into the reaction unit; the heat source unit comprises any one of a plasma torch head, an ignition combustion flame gun and a high-temperature heating rod, and the heat source unit is mounted on the reaction unit; according to the designed water-free waste gas treatment device, waste gas is combusted through cooperation of the heat source unit and the reaction unit, products are cooled in the position of the reaction unit in a mixed mode of air cooling and water cooling when being cooled, sufficient combustion of the waste gas is guaranteed, meanwhile, the whole reaction unit can be protected, and the service life of the reaction unit is prolonged. The purposes of reducing the use amount of energy, reducing the generation of waste water and saving water are achieved.

The present invention discloses an electrical box with sealing and high-efficiency heat dissipation, and relates to the technical field of air conditioning. The electrical box with sealing and high-efficiency heat dissipation comprises a processing frame and a mounting frame, and also comprises a disassembly device; wherein, an electrical body is fixedly mounted on the bottom of the inner wall of the processing frame, a temperature detector is fixedly mounted on the bottom of the inner wall of the processing frame, a detection module and a control module are arranged inside the temperature detector, and a mounting opening is provided on the surface of the processing frame; wherein, the disassembly device comprises a conduction plate, a heat dissipation fin, a heat dissipation fan, an L-shaped plate, a triangular plate, a sliding plate and a sliding frame, and a sliding groove is provided on the surface of the mounting frame. The electrical box with sealing and high-efficiency heat dissipation can realize rapid disassembly, facilitate the inspection and maintenance of the heat dissipation device, reduce the maintenance cost of the equipment, and realize effective contact with electrical bodies of different sizes.

The invention discloses a memory management method for reducing fragmentation and an operating system, and belongs to the technical field of computer storage. Memory management is performed through a memory pool, a logic space is created for mapping with the memory pool, a page table is utilized to record a mapping relation between memory pages of the memory pool and memory pages of the logic space, and a memory recovery table records memory information supporting automatic recovery and the total memory capacity in the memory recovery table according to an application sequence. Memory allocation, memory access, memory release and memory recovery are all carried out through a logic space. According to the invention, the rapid allocation of the memory is realized, and the fragmentation of the memory is reduced.

The present invention discloses a double-link reversing oil pumping unit and method, which are related to the technical field of oil pumping units. The method comprises: a bracket, on which a rotating roller is rotatably connected, on which a wide belt is wound, and on which a connecting frame is fixed; a commutator, which is arranged on the bracket; a counterweight, which is slidably connected to the connecting frame, and on which a sucker rod is installed; a support frame, which has at least two, which are symmetrically distributed and fixed to the bracket, and on which a buffer strip is fixed; a buffer block, the number of which is the same as that of the buffer strip, which is slidably connected to the counterweight, and on which a flexible block is fixed. The present invention moves the buffer block toward the adjacent buffer strip, and when the wide belt breaks, the friction force on which the flexible block is subjected to when falling is increased, thereby slowing down the falling speed of the buffer block and the counterweight, thereby preventing the counterweight from falling too fast to cause damage to the sucker rod, and increasing the maintenance cost of the oil pumping unit.

The utility model discloses a movable conical crushing and screening station with a three-layer screening system, which relates to the technical field of engineering machinery and comprises a main frame, a feeding mechanism, a conical crushing main machine, a screening system, an engine assembly, an electrical system assembly, a hydraulic system and a lubricating system. The cavity type of the crushing main machine is optimized, the design of the high-strength wear-resistant lining plate is adopted, and the whole machine can simultaneously discharge three types of finished products through crushing and screening. Meanwhile, the crushing and screening device is not limited to mine stone processing and can also be applied to other crushing and screening effects, and stone is conveyed out through different conveyors, so that unnecessary equipment investment can be greatly reduced, the whole crushing and screening operation is more compact, and the whole crushing and screening operation is more convenient and faster; the problems that when materials with three particle sizes need to be processed, equipment distribution is loose and not integrated, and unqualified semi-finished products cannot be efficiently treated are solved, and maintenance cost increase, labor cost increase and energy waste caused by machine increase are relatively reduced.

The invention discloses a high-low voltage power transformation cabinet convenient for wire arrangement, and relates to the technical field of high-low voltage power transformation cabinets, the high-low voltage power transformation cabinet convenient for wire arrangement comprises a shell, a support is fixedly installed at the bottom of the shell, a cabinet door is rotatably installed on the front surface of the shell, and a cooling fan is fixedly installed at the top of the shell; a fixing frame is fixedly installed on the inner wall of the shell, an electronic device is fixedly installed on the side, close to the cabinet door, of the fixing frame, a wiring board is fixedly installed on the inner wall of the shell, a fixing device is further arranged in the shell, and the transverse rod is limited through a fixing key so that the cabinet door can be firmly locked when closed. Only the rotating handle is rotated to drive the inclined panel to move so as to release the limiting of the cross rod, so that the cabinet door is opened, the opening difficulty of the cabinet door is increased, misoperation can be avoided, and electrical equipment is prevented from being closed or adjusted during operation.

The invention discloses a real estate supervision method and system based on artificial intelligence. The method comprises the steps of data acquisition, data preprocessing, real estate data balancing, real estate property right risk assessment model construction and real estate supervision. The invention belongs to the technical field of real estate management, and particularly relates to a real estate supervision method and system based on artificial intelligence. According to an included angle between real estate data, favorable neighbors are screened out to construct a self-adaptive neighborhood set, similarity measurement is introduced to calculate the number of synthetic data, and the data are synthesized; detecting the quality based on the classification confidence of the synthetic data, and constructing a real estate data balance set according to the high-quality synthetic data; a dynamic frequency factor is designed to calculate a frequency adjustment loop learning rate, a dynamic cutting threshold is introduced to carry out gradient norm constraint, depth Q network parameters are updated, a real estate property right risk assessment model is constructed, the real-time requirement is met, and it is ensured that different types of real estates can be equally and effectively supervised.

The invention discloses an air monitoring device for air pollution abatement and a using method thereof, and relates to the technical field of air monitoring devices.The air monitoring device comprises an equipment frame, a storage frame fixedly penetrates through the surface of the equipment frame, and a protection plate is slidably mounted above the equipment frame; a solar panel is fixedly mounted above the protection plate, a servo motor is fixedly mounted on the inner wall of the equipment frame, a signal receiver is fixedly mounted at the top of the inner wall of the equipment frame, and the protection device comprises a transmission shaft, a sliding block, a lifting plate, a monitoring mechanism, a connecting rod, a U-shaped plate and a connecting rod. According to the air monitoring device, the situation that the monitoring mechanism is collided due to misoperation in the equipment transportation process can be avoided, meanwhile, the monitoring mechanism can be stored in time in the severe environment, the situation that the monitoring mechanism is damaged under the action of external force in the severe environment is avoided, and unnecessary loss and subsequent maintenance cost are reduced.

The utility model relates to the technical field of sewage suction and purification vehicles, in particular to a movable sewage suction and purification vehicle which comprises a bottom plate, a plurality of pulley mechanisms, a settling tank, a filter tank, a cover plate and a connecting mechanism, the pulley mechanisms are arranged at the bottom of the bottom plate, a push handle is arranged on one side of the bottom plate, and the filter tank is arranged on the other side of the bottom plate. The settling tank is placed at the top of the bottom plate, the top of the settling tank is connected with one end of a positioning block, the other end of the positioning block penetrates through the bottom plate, a sewage discharging assembly is arranged at the bottom of the front face of the settling tank, the filtering tank is connected with the bottom plate through the connecting mechanism, and the cover plate is connected with the filtering tank through a first bolt. A material pumping assembly is arranged on the cover plate, a discharging assembly is arranged at the bottom of the filtering box, and the connecting mechanism comprises a telescopic air cylinder, a connecting block, a fixing block and a second bolt.

This utility model provides a self-repairing structure for integrated circuits, relating to the field of circuit board repair equipment technology. It includes a repair equipment base and a clamping plate. The clamping plate is located on the top of the repair equipment base. A repair component slot is formed on the top of the repair equipment base. Two bearing through holes are formed through the inner wall of the repair component slot. Bearing rods are provided on the inner walls of both bearing through holes. A support plate is fixed to one side of each bearing rod, and a support frame is fixed to one side of the support plate. The clamping plate is located on top of the support frame. A sliding adjustment groove 1 and a sliding adjustment groove 2 are formed through the top and bottom of the support frame. A fixing rod 1 is provided on the inner wall of the sliding adjustment groove 1 and is fixed to the bottom of the clamping plate. A fixing rod 2 is provided on the inner wall of the sliding adjustment groove 2 and is fixed to the bottom of the clamping plate. A locking knob 1 is threaded onto the surface of the fixing rod 1, and a locking knob 2 is threaded onto the surface of the fixing rod 2. An integrated circuit board clamping groove is formed on one side of the clamping plate.

The invention discloses a magnetic type spinner split pump head assembly, which belongs to the technical field of plunger pumps, and comprises a pump head and a pump body which are detachably connected, a plunger rod is arranged in the pump head and the pump body in a matched manner, a connecting piece is arranged on the periphery of the joint of the pump head and the pump body, a first cylindrical surface matched with the connecting piece is arranged on the outer side of the pump head, and a second cylindrical surface matched with the first cylindrical surface is arranged on the outer side of the pump head. The cylindrical surface is provided with external threads, the connecting piece is provided with internal threads matched with the external threads, the outer side of the pump body is provided with an extending part, the extending part is matched with one end of the pump head, and the connecting piece enables the extending part to be axially close to the pump head. According to the invention, the pump head and the pump body can be quickly and nondestructively assembled with high sealing performance, and the efficiency and the stability of material replacement are improved.

The utility model discloses a kind of for instrument and apparatus based on magnetic coupling axial motion mechanism, it includes device ontology, it includes first surface and second surface;Knob device, it includes first magnetic force coupler and elastic positioning assembly of assembly setting in first surface;Turntable device, it includes second magnetic force coupler and turntable assembly of assembly setting in second surface;Wherein, first magnetic force coupler and second magnetic force coupler coaxial arrangement and form magnetic coupling, elastic positioning assembly is driven turntable assembly synchronous rotation by magnetic coupling effect, to realize knob device and turntable device non-contact transmission connection;Also disclose a kind of instrument and apparatus.The utility model uses magnetic coupling axial or radial non-contact transmission connection mode, realizes the power transmission between knob device and turntable device, avoids the wear problem of traditional mechanical connection, prolongs service life, and realizes accurate rotation positioning every gear, meets the application scene of higher requirement to rotation accuracy.

This invention belongs to the field of blockchain technology, specifically relating to a semantic identifier blockchain retrieval method and system for large-scale distributed data. This invention designs a unified semantic identifier model, mapping data records from different sources and in different formats to multi-level scalable semantic paths. It constructs a MIR tree forest, integrating the organization of Trie and the verifiability of Merkle, with each scenario as the root. Only the root hash of each scenario or its aggregate root is maintained in the block header, thereby achieving overall constraint on the state of large-scale off-chain semantic indexes while maintaining lightweight on-chain storage overhead. Simultaneously, this invention designs corresponding index traversal and verification object construction mechanisms around various semantic retrieval modes, enabling clients to verify the correctness of target records with only limited path and node hash information. This provides a new technical path for unified semantic management and efficient verifiable retrieval of multi-source heterogeneous data in the HSB environment.