37results about How to "Overcome costs" patented technology

The utility model discloses a low fluctuation power supply parallel operation equipment, including n power supply modules and load connection terminal, each power supply module includes user input, power conversion, acquisition, CAN communication module and MCU module, the power supply interface of each power supply module is connected with the load connection terminal through a flexible wire, and the power supply modules are in communication connection through a CAN bus. One of the n power supply modules is set as a host, the other power supply modules are set as slaves, and each power supply module adjusts output voltage to enable the voltage to be equal to Vset and collects real-time current data; the slave computer transmits data to the host computer, the host computer receives the data, calculates a current sharing reference and sends the current sharing reference to the slave computer through a bus, and each power supply module calculates and obtains a new voltage stabilization value Vnew according to the current sharing reference and a set Vset. Compared with the prior art, the utility model has the advantages of reducing system oscillation, improving voltage stability and reducing equipment cost.

The invention discloses a method for calculating the wave load borne by a pile based on machine vision, and the method comprises the steps: collecting and obtaining a water surface image sequence containing the pile, carrying out the image processing of the water surface image sequence, obtaining a flow field image, carrying out the post-processing of the flow field image, and obtaining an optimized flow field image, the flow field is comprehensively monitored through machine vision, and accurate recognition of the flow field where the pile is located is improved; calibration of a preset image scaling is carried out on the optimized flow field image, pixel coordinates in the optimized flow field image are converted into actual coordinates, pile periphery data under a corresponding flow field are obtained based on a particle image velocimetry (PIV) algorithm, and a velocity vector field of fluid particles can be obtained through the particle image velocimetry algorithm (PIV); the flow velocity distribution, vortex and other fluid mechanics parameters of the whole water area are further deduced, pile periphery data under the corresponding flow field can be obtained, then the wave load borne by the pile is obtained based on the Morison equation, and the defect that according to an existing wave load method, due to the fact that the working environment of underwater ocean engineering structures is complex and severe or the safety requirement is high, the wave load is poor is overcome. The problems of low wave load accuracy and high investment cost are solved, and the accuracy and efficiency of the wave load borne by the pile are greatly improved.

The invention discloses a flexible friction nano-generator material based on silk fabric and Ecoflex as well as a preparation method and application of the flexible friction nano-generator material. The invention mainly comprises a positive friction layer material SF / beta-LGF / ZnO and a negative friction layer material Ecoflex / Ag-MMT. Specifically, the positive friction layer is prepared through the following steps that firstly, beta-lactoglobulin is converted into amyloid fibril at the specific pH and temperature, then beta-LGF is loaded on the surface of silk fabric through a cross-linking agent, and a ZnO film grows on the surface of the silk fabric through the atomic layer deposition technology. The negative friction layer is based on biodegradable Ecoflex, and the electrical property of the negative friction layer is improved by doping Ag intercalated montmorillonite. According to the invention, not only are the electron donating and electron withdrawing capabilities of the silk fabric and Ecoflex enhanced, but also the electric output performance of the friction nano-generator is remarkably improved, and low-frequency mechanical energy can be efficiently converted into electric energy.

The invention discloses an SRB remediation system capable of stably operating for treating heavy metal wastewater for a long time and application, belongs to the technical field of heavy metal wastewater treatment, and solves the problems that in the prior art, mining heavy metal wastewater generally contains high-concentration soluble heavy metal, high sulfate content and low pH value, the ecological environment is seriously damaged, and the service life of the mining heavy metal wastewater is prolonged. And the traditional physicochemical treatment method has the technical problems of high agent consumption, high sludge amount, easiness in secondary pollution and the like. According to the SRB remediation system capable of stably operating for a long time and used for treating heavy metal wastewater, efficient removal and immobilization of heavy metal are achieved on the basis of the biological vulcanization effect of SRB composite flora in a UASB bioreactor in combination with the synergistic effect of microbial communities and the protection mechanism of extracellular polymeric substances, and by constructing the composite SRB flora system, operation parameters are accurately regulated and controlled, so that the heavy metal wastewater treatment efficiency is improved. And efficient and stable removal and fixation of various heavy metals in the AMD are realized in the UASB reactor by utilizing a cooperative protection mechanism of EPS.

The invention relates to the technical field of semiconductor detection, discloses a semiconductor image processing method, and particularly relates to an image template matching result evaluation method and system and a readable storage medium. According to the embodiment of the invention, the edge point corresponding to each edge point in the to-be-matched image, namely the edge image, in the template image is constructed, the inner point set of the template image is constructed based on the edge points to serve as the target feature for evaluating the to-be-matched image, and then the point which changes most violently in the inner point set is determined as the optimal edge point. The optimal edge point is used as an optimal point for evaluating the positions of the template image and the image to be matched; based on the edge point position error of the optimal edge point and the matched edge point, the deviation between single point positions is determined, finally, the average deviation of the deviation of the multiple point positions serves as the final deviation between the two images, and evaluation of the accuracy of the matching result is achieved through the deviation.

The invention discloses a bending degree measuring device and a skeleton. The bending degree measuring device comprises a flexible circuit board; the n conductive substrates are sequentially attached to the flexible circuit board in the first direction; the n measuring resistors are arranged on the sides, away from the flexible circuit board, of the conductive substrates in a one-to-one correspondence mode; when the flexible circuit board is bent, the connection state between the measuring resistors is changed; the test circuit comprises a first power supply end, a second power supply end, a divider resistor and a measurement node; the divider resistor is connected with the first power supply end, and the measuring resistor located at the first arrangement position is connected with the divider resistor through a measuring node; the measuring resistor located at the last arrangement position is connected with a second power supply end; the controller is connected with the test circuit; the controller is used for obtaining the resistance value of the measuring node and determining the bending degree of the flexible circuit board according to the resistance value. According to the technical scheme, the cost of the bending degree measuring device can be reduced, and meanwhile the anti-interference capability of the bending degree measuring device can be improved.

The utility model relates to the technical field of packaging machines, and provides a transport vehicle and a processing system. The transport vehicle comprises a transport vehicle body, a lifting unit and a bearing unit. The bearing unit is connected with the transport vehicle body through the lifting unit. The bearing unit can bear a packing material shaft and a packing material unit at an inlet of a packing material bin of the canning truck. Moreover, under the action of the lifting unit, the bearing unit can lift up or put down the sealing material containing frame in the processing area and the sealing material containing frame in the material temporary storage area. By means of integrated operation design, automatic lifting and bearing functions and multi-task processing capacity, the transport vehicle successfully solves the problems that in the prior art, efficiency is low and cost is high in the process of replacing packing materials and packing material sealing materials, efficient and automatic operation in the process of replacing the packing materials and the sealing materials is achieved, and production efficiency is improved. The production efficiency is greatly improved, and the operation cost is reduced.

The invention discloses a continuous zirconium oxide fiber with an ionic gel coating and a preparation method of the continuous zirconium oxide fiber, and belongs to the technical field of continuous inorganic ceramic fiber new materials. The ionic gel coating formed by rapid polymerization of ramie fibers modified by a coupling agent and a deep eutectic solvent under UV illumination can effectively protect the fibers on the premise of being thin and uniform in thickness and not damaging the softness of the fibers, and endows the fibers with certain self-lubricating performance; therefore, the friction damage caused by the continuous zirconium oxide fiber in the weaving process is reduced. Meanwhile, the ionic gel coating has good mechanical performance and self-repairing capacity and is not prone to being stripped from the fibers, the abrasion resistance of the zirconium oxide fibers is improved, the stability of a product in the three-dimensional texture process is improved, and the ionic gel coating has great commercial value.

The present invention relates to the technical field of beam-making pedestal foundation, and in particular to a beam-making pedestal foundation structure and design method for a precast beam, wherein the beam-making pedestal foundation structure for the precast beam includes a pedestal enlargement foundation and a pedestal foundation, the pedestal foundation is arranged at the center of the top of the pedestal enlargement foundation, and the precast beam template is arranged on the top of the pedestal foundation to transfer the weight of the precast beam template and the weight of the precast beam to the pedestal foundation. The beam-making pedestal foundation structure for the precast beam overcomes the problems of large amount of original soil replacement of the foundation and long construction period and high cost caused by large-area concrete foundation laying on the foundation during the construction of the existing precast beam site by adopting the coordinated design of the pedestal foundation and the pedestal enlargement foundation, and reduces the laying area and amount of concrete by optimizing the size and layout of the pedestal foundation and the pedestal enlargement foundation, thereby reducing the construction cost and shortening the construction period.

The embodiment of the utility model discloses an anti-misplug protection module, an interface power supply circuit and electronic equipment, and belongs to the technical field of power electronics. The anti-misplug protection module is arranged in an interface power supply circuit and comprises a parallel diode, the anode of the parallel diode is connected with the current limiting output end of a current limiting switch in the interface power supply circuit, and the cathode of the parallel diode is connected with the power supply output end of the interface power supply circuit. And the parallel diodes are used for reducing forward voltage drop to prevent voltage fluctuation caused by sudden load change of the access interface power supply circuit. According to the anti-misplug protection module provided by the embodiment of the invention, the voltage of the power supply output end of the interface power supply circuit can be stabilized only by additionally arranging simple electrical elements in the interface power supply circuit, voltage fluctuation caused by sudden change of a load connected to the interface power supply circuit is prevented, and the interface function is ensured to be stable. And interface misplug prevention protection is realized with low cost.

The invention provides an information processing method and device, electronic equipment and a computer readable storage medium, which can be applied to the technical fields of computers and internet. The information processing method comprises the following steps: in response to a received information processing request, performing attribute verification on a source object in the information processing request according to source object attribute information to obtain a source object verification result; the source object verification result is responded to represent that the source object passes the attribute verification, the source object is processed according to a preset mapping relation, at least one target key value relation is obtained, and the target key value relation comprises target key information and target value information corresponding to the target key information; according to the target object attribute information, processing the at least one piece of target key information and target value information corresponding to the at least one piece of target key information to obtain a target object; the source object attribute information, the predetermined mapping relation and the target object attribute information are determined according to the service identifier.

The present invention relates to the technical field of soil sampling, and in particular to a soil sampling device and sampling method for geological exploration, including a support, a lower support, a pressure plate, an internal threaded sleeve, a drill rod, a sample push rod, etc.; the support is installed with a lower support, the lower support is slidably connected with a pressure plate, the pressure plate is rotatably connected with an internal threaded sleeve, the internal threaded sleeve is threadedly connected with a drill rod, the internal threaded sleeve is slidably connected with a sample push rod, and the sample push rod is used to push out the soil sample in the drill rod. The device can automatically realize the drilling in and out of the drill rod and the pushing out of the soil sample, the operation is simple and labor-saving, and the power of the driving source can be selectively transmitted to different positions to realize different functions.

This invention provides a heat exchange component and an air conditioning system. The heat exchange component includes a heat exchange body, a water inlet chamber, and a fluid drive component, which are disposed within the water inlet chamber. The heat exchange component and air conditioning system provided by this invention directly house the fluid drive component within the water inlet chamber, thereby overcoming the problems of large space occupation and high cost caused by the need for additional design and installation of water pumps in the prior art. Furthermore, placing the drive mechanism outside the water inlet chamber avoids additional waterproofing requirements for the drive mechanism. The first partition separates the inlet and outlet of the fluid drive component, forming a pump body structure and increasing the driving effect of the fluid drive component. Simultaneously, the mounting holes facilitate the disassembly and assembly of the fluid drive component, increasing the efficiency of the heat exchange component's assembly and disassembly. Moreover, the detection mechanism allows for adjustment of the fluid drive component based on flow rate and / or temperature, achieving automatic flow regulation, intelligent control, and energy saving in the air conditioning system.

The invention discloses a normal-temperature and normal-pressure performance testing device for a hydrate in-situ separation desander, and mainly solves the problems of high experiment difficulty and high cost of a heat and pressure preservation performance test in the prior art. The device comprises a substitute sample preparation device, a mixing tank communicated with the substitute sample preparation device, a pump communicated with the mixing tank, a frequency converter connected with the pump, a hydrate in-situ separator communicated with the outlet end of the pump through a conveying pipe, and a plurality of sensor assemblies mounted on the conveying pipe, the sample processing device is used for analyzing samples at each sampling port of the hydrate in-situ separator; and the data acquisition processor is used for displaying information of the sensor assembly and performing data analysis on the sample processing device. Through the scheme, the device and the method for testing the performance of the hydrate in-situ separation desander at normal temperature and normal pressure are realized, the purposes of simplifying the performance testing steps and equipment, reducing the testing difficulty and improving the testing efficiency are achieved, and the device and the method have very high practical value and popularization value.

The utility model provides a micro-fluidic substrate and a micro-fluidic chip, and relates to the technical field of analysis and detection, according to the micro-fluidic substrate, the processing and assembling links of independent parts are eliminated through an integrally formed structure, and the manufacturing cost is reduced; meanwhile, the integrated structure does not deform in the puncturing process, so that the accuracy and reliability of the puncturing action are ensured, and the defects of high cost and poor puncturing effect in a traditional micro-fluidic chip are overcome; the micro-fluidic chip comprises a micro-fluidic substrate, a water box and a sealing film, the water box is arranged in a water box placement area, the sealing film is arranged on the micro-fluidic substrate, and the sealing film serves as a flexible sealing layer covering the micro-fluidic substrate to prevent fluid in a fluid groove in a substrate body from leaking. Compared with a microfluidic cover plate which is in ultrasonic welding with a microfluidic substrate in the prior art, the cover sealing film is lower in manufacturing cost.

The invention relates to the technical field of optical communication, in particular to a vehicle-mounted optical module fiber coiling structure and a use method thereof, and the structure comprises a PCB, a fiber coiling assembly and a housing. The fiber coiling assembly is fixedly arranged above the PCB, and the PCB and the fiber coiling assembly are placed in the shell; the fiber coiling assembly comprises a fiber coiling frame and a mounting panel, the fiber coiling frame is fixedly connected with the PCB, a plurality of photoelectric hybrid connectors are inserted into the mounting panel, and tail fibers of the photoelectric hybrid connectors are coiled into the fiber coiling frame; a plurality of optical devices are arranged on the PCB, the fiber coiling frame comprises an upper platform, a lower platform and a connecting surface, the two ends of the connecting surface are fixedly connected with the upper platform and the lower platform respectively, and the upper platform is located above the optical devices. According to the invention, the fiber coiling structure and the PCB are stacked, so that the occupation of the fiber coiling structure and the PCB on the space in the vehicle is reduced, and the signal transmission path is optimized, thereby overcoming the problems of signal transmission and integrity and the problems of cost and space in the existing separated arrangement.

This utility model relates to the field of textile technology, and in particular to a fabric unwinding and winding device, comprising an unwinding device and a winding device respectively arranged on both sides of a drying equipment. Loading and unloading at both the unwinding and winding devices are manually operated. Both the unwinding and winding devices are equipped with tension-adjusting rollers. This combination of manual loading and unloading with automatic adjustment of key system components significantly reduces manufacturing and operating costs while fully meeting the requirements of the ceramic fiber felt roll drying process, and makes operation simpler and easier. The winding device utilizes a correction system composed of a correction sensor, a movable support, and guide rails to detect and automatically correct positional deviations during fabric movement, effectively avoiding problems such as uneven winding and misalignment common in traditional semi-automatic equipment, thus improving product quality consistency. The independent collection grid and its movable support design facilitate operator roll replacement and improve production efficiency.

The invention discloses a breaking capacity evaluation method and device of a high-pressure gas circuit breaker, terminal equipment and a storage medium, and the method comprises the steps: building an initial black box model of the high-pressure gas circuit breaker according to structure parameters and design parameters, and obtaining a first black box model of the high-pressure gas circuit breaker based on a first experiment result of the high-pressure gas circuit breaker in a symmetric short-circuit current breaking test; and optimizing model parameters in the initial black box model, generating a black box model, overcoming the defect of inaccurate evaluation result caused by insufficient parameter precision at present, then performing asymmetric short-circuit current on-off tests of different test conditions on the black box model by adopting a simulation loop, and according to a second test result, calculating the evaluation result of the black box model. And the breaking performance of the high-pressure gas circuit breaker is determined, so that the defects of high economic and time cost of the current test evaluation method are overcome. Therefore, the test evaluation method and the simulation method in the circuit breaker breaking capacity performance evaluation method are combined, the reliability of the evaluation result is effectively improved, and meanwhile test resources and time cost are saved.

The application relates to a high-strength weather-resistant gas shielded welding wire and a preparation method and application thereof, and belongs to the technical field of welding materials. The chemical composition of the welding wire comprises, in mass fraction, C: 0.06%-0.10%, Mn: 1.65%-2.00%, Si: 0.65%-0.80%, P: 0.03%-0.10%, S: <=0.015%, Cr: 0.55%-1.00%, Ni: 0.30%-0.80%, Cu: 0.30%-0.45%, Mo: 0.10%-0.25%, Ti: 0.03%-0.10% and base element Fe. The Si-Mn-P-Ni-Cr alloy system is adopted, the contents of alloy elements such as Cr and Ni are reasonably designed, the mechanical properties of deposited metal are ensured, the corrosion-resistant element P is added, and the component range of P is optimized and adjusted, so that the corrosion resistance of the deposited metal is obviously improved on the basis of maintaining good mechanical properties.

The invention relates to the technical field of fruit cyst foreign matter detection, and particularly discloses a citrus cyst vacuum sorting assembly, device and method. The citrus cyst vacuum sorting assembly comprises a support, and a visual camera is arranged on the support; a conveying device is arranged on the bracket; a vacuum sorting assembly is rotationally arranged on the support. The vacuum sorting assembly comprises a rotary vacuum shell, and a vacuum generator is arranged at one end of a rotary vacuum cavity. A plurality of suction holes are formed in the rotary vacuum shell, vacuum control valves are arranged at the suction holes, and magnetic opening and closing mechanisms are connected to the vacuum control valves; an upper magnetic device and a magnetic eraser are arranged on the bracket; comprising an industrial personal computer, and the industrial personal computer is electrically connected with a visual camera, a conveying device, a rotating power source of a vacuum sorting assembly, a magnetic feeding device and a magnetic eraser. The device has the advantages of being high in removing efficiency, low in removing cost and good in removing stability.

The present invention discloses a method for simultaneously determining the contents of 6 components in Jinlian Qingre Granules. 3 substances are selected as internal reference substances respectively, and the correction factor under each internal reference substance is calculated. The contents of the other 5 substances can be simultaneously calculated according to the correction factor and the HPLC chromatographic elution peak area of ​​the substance to be measured. The present invention establishes a one-measurement-multiple-evaluations (QAMS) method using any one of the three components of Jinlian Qingre Granule, orientin-2”-O-β-galactoside, orientin, and vitexin, which have clear pharmacological effects and high contents in Jinlian Qingre Granules as an internal reference substance, and can simultaneously determine the contents of 6 components in Jinlian Qingre Granules, and compare and confirm with the determination results of the external standard method. The method disclosed in the present invention uses fewer reference substances, can simplify the detection process, improve detection efficiency, and reduce detection costs, and provides support for the comprehensive evaluation of the quality of the preparation and the improvement of quality standards.

The present invention discloses a biomedical coating and its preparation method and application. The coating comprises a polymer of formula I, the coating preparation method is simple, the coating is not easy to fall off and has excellent blood compatibility, and can be applied to the surface of a large number of substrate materials, so that the surface of the medical catheter has anticoagulant, antibacterial and bactericidal properties at the same time, avoiding the occurrence of thrombosis, blood vessel blockage and bacterial infection after implantation in the body.

The present invention relates to a concentration method for improving the concentration and activity of methanogens in anaerobic digestion inoculum. The concentration method of the present invention comprises the following steps: providing a flocculant; adding an inoculant to a reactor, adding a flocculant, aerating with an inactive gas, and sealing the reactor; allowing the obtained sealed reactor to stand for stratification, removing the supernatant, and obtaining a bottom microbial flocculent precipitate; inoculating the microbial flocculent precipitate into an anaerobic bottle, adding an anaerobic culture medium and an organic carbon source, and aerating with an inactive gas; adding an oxidant and a complex vitamin to the anaerobic bottle, and culturing with an intermittent stirring method; adding an organic carbon source to the anaerobic bottle at intervals of 7-10 days, maintaining the culture temperature and stirring speed unchanged, stimulating the rapid proliferation of the restored active microorganisms, and obtaining a high-activity and high-concentration methanogen group. The present invention can improve the absolute number and methanogenic activity of subsequent methanogens by regulating and controlling some technical parameters during the concentration process.

This invention relates to the field of chemical materials, particularly to metal protection in the metal pickling industry, specifically a method for preparing an imidazole-based ionic liquid corrosion inhibitor and its application. The chemical structural formula of the imidazole-based ionic liquid corrosion inhibitor, 1-(4'-biphenylmethyl)-3-(2-ethoxy-2-oxoethyl)-1H-imidazolium-3-onium bromide, is as follows: The imidazole-based ionic liquid corrosion inhibitor of this invention can be used for the protection against acid pickling corrosion of metal materials, and can withstand various changes in cleaning conditions well. In particular, the pickling corrosion inhibitor of this invention has the technical characteristics of low preparation cost, good solubility, good environmental compatibility, low inhibitor dosage, high corrosion inhibition efficiency, stable performance of the corrosion inhibitor, and long continuous action time. Its application range is wide and it is worthy of large-scale promotion and application.

This invention discloses a triphenylamine-mediated photocatalytic isomerization method for olefins from E to Z, belonging to the field of organic synthesis technology. This invention uses triphenylamine and 4-nitrotriphenylamine, triphenylamine compounds, as photocatalysts to catalyze the E-Z isomerization of olefins. Their molecular structures have a propeller configuration, which can drive olefin configuration inversion through triplet energy transfer without the need for metal participation, achieving low-cost, highly stable, and mild E-Z isomerization of olefins. This invention is carried out at room temperature, without the need for high temperature and pressure, resulting in low energy consumption and environmental friendliness. It has a wide substrate applicability, exhibiting good catalytic activity for olefins with different substituents such as methyl, halogen, cyano, and hydroxyl groups, with product yields reaching up to 92%. The operation is simple, the reaction process is straightforward, and it is suitable for large-scale production applications.

The utility model discloses a full -automatic dish washer relates to cleaning equipment technical field, it includes conveyer belt one, and one side of conveyer belt one is provided with conveyer belt two, one side of conveyer belt two is provided with conveyer belt three, and a plurality of blocking rods are fixedly arranged on conveyer belt three, electric push rod is arranged on conveyer belt two, and electric push rod is pushed to conveyer belt three by conveyer belt one and is sent to the dinner plate or bowl on conveyer belt two, the lower portion of conveyer belt three is provided with inclined slide, and the edge of inclined slide is provided with the interface tooth, one side of inclined slide is provided with conveyer belt four, a plurality of plug teeth are fixedly arranged on conveyer belt four, and a plurality of plug teeth are used for conveying dinner plate or bowl with the interface tooth cooperation. This full -automatic dish washer prevents overlapping through physical isolation, single line partition cleaning and intelligent control into groove, solves the problem of uneven water flow coverage, high sorting cost and equipment jam in tableware cleaning, realizes full -automatic high -efficient cleaning.

The invention discloses a wireless HART (Highway Addressable Remote Transducer) equipment security access method based on radio frequency fingerprints, which comprises the following steps of: S1, extracting a plurality of wireless radio frequency fingerprints from each legal equipment, and establishing a legal equipment fingerprint database; training the constructed double-branch convolutional neural network model by using a legal equipment fingerprint database; s2, the network access point extracts wireless radio frequency fingerprint information of the network access point according to a network access request signal sent by the equipment to be accessed to the network; s3, the network access point forwards the obtained radio frequency fingerprint information to a Wireless HART (Highway Addressable Remote Transducer) network manager through a route; s4, the Wireless HART network manager performs identity recognition on the received radio frequency fingerprint by using a double-branch convolutional neural network model; and S5, determining whether to allow the equipment to access the network according to the identity recognition result, and returning a network access response to the equipment to access the network. According to the invention, the complementarity of I / Q signals can be fully utilized, and the accuracy of fingerprint identification is improved.

This invention discloses a method for preparing type III collagen peptides and their applications. The method for preparing type III collagen peptides effectively avoids the problem of easy degradation of small molecule peptides in microorganisms by expressing sequence monomers in tandem as highly stable macromolecular precursor proteins. Combined with cloning into expression vectors, high-yield expression is achieved. By combining specific enzymatic digestion methods with ultrafiltration and specific enzymatic digestion technology, the high uniformity of the final product sequence and a purity of over 95% are ensured. This method not only completely solves the pathogenic risks and batch instability of animal-derived extraction methods, but also overcomes the high cost and environmental pollution problems of chemical synthesis methods, realizing efficient, safe and controllable production of small molecule type III collagen peptides.

The present invention provides a compressor and a refrigeration unit with the effect of reducing the pressure drop of supplementary air. The compressor includes a shell, a compression chamber is formed inside the shell, and a supplementary air chamber is also provided on the shell. The compressor and refrigeration unit with the effect of reducing the pressure drop of supplementary air provided by the present invention directly provide the supplementary air chamber on the shell, which overcomes the problem in the prior art that an additional buffer tank is provided on the supplementary air pipeline to reduce the vibration caused by the supplementary air pipeline and increase the cost and size of the unit, effectively simplifies the unit structure, reduces the cost of the unit, and at the same time reduces the diameter of the connecting hole, reduces the connection time and the connecting area between adjacent tooth grooves, thereby reducing the problem of gas leakage between adjacent tooth grooves, thereby achieving the purpose of reducing pressure pulsation and reducing pressure drop, and improving the volumetric efficiency of the compressor during compression, thereby improving the efficiency of the compressor and the refrigeration unit.

The invention discloses an internal heating method vacuum magnesium smelting device and method, and belongs to the technical field of non-ferrous metal smelting. Comprising a vacuum electric heating horizontal reduction furnace, a trolley mechanism for conveying square materials into and out of the horizontal reduction furnace, and a crystallization chamber connected to one side of the horizontal reduction furnace. A reduction chamber is arranged on a plane steel plate in the horizontal reduction furnace, a plurality of electric heating elements are arranged on the surfaces of the inner walls of the two sides of the reduction chamber, a plurality of layers of material trays on the trolley mechanism are used for loading square materials, and the crystallization chamber is composed of a main pipeline and a plurality of crystallizers connected to the two sides of the main pipeline. The trolley mechanism loaded with the square materials enters the horizontal reduction furnace and can be combined with the reduction chamber to form a closed space, the square materials are subjected to reduction reaction in the closed space to continuously generate magnesium steam, and the magnesium steam is captured by the crystallizer and condensed into solid metal magnesium. Compared with the existing Pidgeon process magnesium smelting technology, the method has the advantages of energy conservation, environmental protection, high production efficiency, flexible equipment design and low equipment manufacturing cost.