72 results about "Ore sorting" patented technology

The invention relates to the technical field of ore separation, and discloses a multi-stage photoelectric-jigging-magnetic separation synergistic efficient ore separation process which comprises the following steps: A, material pretreatment and particle size regulation and control: raw ore raw materials are treated through crushing and screening equipment; the method comprises the following steps of: adding the raw materials into a magnetic separator to obtain a coarse-fraction product with the particle size range of 5-100mm and a fine-fraction product with the particle size range of 0.5-5mm, and cleaning and drying the products to remove surface dust and pollutants. Sequential and parallel recognition and sorting of multi-dimensional physical attributes such as color (photoelectricity), density (jigging) and magnetism (magnetic separation) of ore particles are achieved, the function limitation of a single sorting method is overcome through the multi-technology coupling mechanism, and a large amount of waste rock is efficiently thrown at the front end through photoelectric pre-sorting; the enriched valuable minerals can be intensively treated by subsequent gravity separation and magnetic separation equipment, and the unit operation efficiency is improved.

The utility model discloses a high frequency vibrating screen device for zirconium titanium ore sorting relates to mineral processing field. A high frequency vibrating screen device for zirconium titanium ore sorting, including screening box, still include: a plurality of oblique settings screening board, from top to bottom equal interval staggered fixed connection in screening box, the both sides of screening box are opened in the symmetry and have the flow through cavity, the utility model discloses through the consistent screen hole design of multilayer screening board and high frequency vibration cooperation, has realized zirconium titanium ore material's efficient continuous screening, and small particle is fast and sieves when first contact screen surface, and large particle is repeatedly refined through multistage screening board, finally through first discharge port and second discharge port accurate separation, effectively improved the screening efficiency, and through continuously to the feed pipe conveying material, and the device can continuous operation, need not stop machine to take and put material, and the continuity of production is greatly improved, reduces manpower cost and equipment loss, especially suitable for the efficient production demand of large -scale zirconium titanium ore processing enterprise.

The utility model relates to an ore sorting device for mining, which comprises a frame body, a screening cylinder is arranged at the top of the frame body, a transmission mechanism is arranged at the top of the frame body, a discharging mechanism is arranged at the top of the frame body, and the transmission mechanism comprises a connecting frame fixedly connected to one side of the screening cylinder. A motor is fixedly connected to one side of the connecting frame, a linkage assembly is fixedly connected to one end of the motor, a connecting rod is fixedly connected to one end of the linkage assembly, the size of the screening drum screen groove is sequentially increased from the inlet end to the outlet end, a feeding hopper is fixedly connected to the interior of the frame body, and a conveying auger is fixedly connected to one end of the linkage assembly. The outlet end of the feeding hopper is located in the screening barrel. According to the ore sorting device for mining, through the screening barrel and the transmission mechanism, automatic screening of ore can be achieved, the screening grooves of the screening barrel are sequentially enlarged from the inlet end to the outlet end, step-by-step separation of the ore is facilitated, and the screening efficiency and precision are improved.

The application discloses a mine ore sorting device for mine exploitation, and relates to the technical field of mine equipment, which comprises a bottom plate, a conveying belt, a connecting cylinder, a screening mechanism, a shaking mechanism and a dust removal mechanism. The screening mechanism is composed of multiple groups of screening cylinders, realizing multi-stage screening of ores; the shaking mechanism provides elastic support through springs, so that the screening cylinders shake during the screening process, preventing ores from blocking the screen holes; the dust removal mechanism is equipped with a pumping assembly, a filter plate, a cleaning mechanism and a knocking assembly, effectively removing dust generated during the screening process, automatically cleaning the filter plate, and further preventing blockage by knocking the screening cylinder through the knocking assembly. The application is equipped with a perfect dust removal mechanism, dust-containing air is pumped into the fixed cylinder through the pumping assembly, clean air is discharged after being filtered by the filter plate, dust pollution is effectively reduced, the working environment is improved, and the health of the operators is ensured.

The invention provides a microwave ore separation device and method capable of being adjusted and controlled in a self-adaptive mode, and belongs to the technical field of ore separation. The ore sorting device comprises a conveying assembly and a self-adaptive temperature adjusting microwave heating mechanism. The self-adaptive temperature-adjusting microwave heating mechanism comprises a microwave cavity and a microwave generating assembly, the microwave generating assembly is arranged on the conveying assembly and connected with the microwave cavity, and the microwave cavity is arranged on the conveying assembly so that a conveying belt of the conveying assembly can penetrate through the microwave cavity along a preset path. The microwave generation assembly is used for dynamically adjusting microwave power so as to conduct self-adaptive heating on ore particles with different particle sizes. Dynamic adjustment of microwave power is achieved through the microwave generation assembly according to different particle sizes of ore particles, so that the ore particles with different particle sizes are heated through the microwave cavity, the accurate basis is provided for the subsequent sorting procedure by adopting the fact that the heat absorption capacities of the ore and the waste rock are different, and then the sorting precision is improved.

The application provides a phosphate ore sorting method, an electronic device and a medium. In a preprocessing stage, a high-energy image obtained from raw ore is registered with a low-energy image as a reference, a difference image representing a gray difference is obtained from the registered high-energy image and the low-energy image, and the low-energy image, the registered high-energy image and the difference image are fused in three channels to obtain a pseudo-color image. In an intelligent identification stage, the pseudo-color image is taken as input, and a target detection model based on deep learning is used for processing, so that accurate and efficient identification of phosphate ore in the raw ore is realized.

The invention relates to an ore grade real-time identification and separation system and method, and belongs to the technical field of ore processing, the ore grade real-time identification and separation system comprises an image acquisition module used for acquiring ore surface images in real time and transmitting the images to an image processing module; the image processing module is used for preprocessing the ore surface image and transmitting the preprocessed ore surface image to the image recognition module; the image recognition module is used for recognizing the preprocessed ore surface image based on an image recognition model and outputting the ore grade to the ore sorting module, and the image recognition model is obtained by training a residual network added with a space attention mechanism based on an ore surface image sample set with an ore grade label; and the ore sorting module is used for carrying out ore sorting by adopting a pneumatic sorting valve and a mechanical arm based on the ore grade. While the ore sorting efficiency and precision are guaranteed, the sorting cost is reduced.

The application discloses a kind of based on particle size analysis calculation ore intelligent sorting system processing capacity method. Through the statistics of the number of ore particles when the maximum processing capacity of intelligent sorting machine, the quantitative particle size-processing capacity relationship model is constructed, and the processing capacity when the same equipment processes different particle size ores is calculated. The application establishes the quantitative relationship model of ore particle size and intelligent sorting machine processing capacity, breaks through the limitation of traditional empirical formula sorting, realizes the accurate prediction and optimization of processing capacity. The method takes the number of particles as the core control parameter, converts the equipment processing capacity from the quality dimension to the quantity dimension, effectively eliminates the processing capacity fluctuation caused by the density difference of different particle size ores, and provides a scientific basis for the process parameter optimization of intelligent sorting machine.

The invention relates to the technical field of ore sorting, and discloses an ore sorting method, device and equipment based on multi-source data fusion, and the method comprises the steps: for each imaging source, employing a corresponding image engine to carry out the preprocessing of an imaging picture, and obtaining a stone information set; determining a main image engine and an auxiliary image engine; for a target stone of the main image engine, determining a matched stone based on the stone information sets of all the auxiliary image engines; transmitting the imaging picture of the matched stone and the stone information to a main image engine, and controlling the main image engine to carry out picture fusion and recognition to obtain a mine waste type; and a blowing control signal is generated based on the ore waste type for ore separation. Through a main-auxiliary engine cooperation mechanism, relevance among different imaging sources is reserved, information splitting and loss caused by independent processing are effectively avoided, the recognition accuracy is improved, and accurate ore sorting is achieved.

This invention relates to the field of mineral processing equipment technology, and discloses a flotation column for mineral processing. The flotation column includes a frame, a crossbeam fixedly mounted on the top of the frame, a fixed mounting base fixedly mounted in the middle of the crossbeam, and a flotation column fixedly mounted in the middle of the fixed mounting base. A rotating shaft is movably mounted inside the flotation column via a bearing mounting base. The bottom end of the rotating shaft extends to the inner bottom of the frame and is fixedly mounted with an impeller. An annular movable frame is movably mounted at the bottom end of the flotation column via a bearing mounting base. A perforated air inlet hood is fixedly mounted at the bottom end of the annular movable frame. A sleeve is also movably mounted inside the flotation column via a bearing mounting base. This invention improves the capture capacity and separation accuracy of fine-grained minerals, reduces impurities, ensures stable and controllable operation, low energy consumption, extends equipment life, and guarantees efficient and continuous mineral processing through uniform aeration, bubble refinement, composite flow field, and vibration synergistic design.

The utility model relates to a multistage tungsten ore sorting device in the technical field of ore sorting equipment, which comprises a support, and a plurality of sorting boxes are sequentially arranged on the support. Screens are arranged in the sorting boxes respectively, filtering holes of the multiple screens are sequentially decreased, and a discharging opening of each sorting box communicates with a feeding opening of the adjacent sorting box. Wherein a magnetic separation assembly is arranged at the feeding port of one separation box and comprises a rotating shaft and a stepping motor, the two ends of the rotating shaft are rotationally connected with the inner walls of the separation boxes through bearings correspondingly, one end of the rotating shaft penetrates through the separation boxes and then is connected with the stepping motor, and a plurality of magnetic separation pieces are evenly fixed to the rotating shaft in the circumferential direction. The tungsten ore multi-stage separation device is reasonable in structure, easy to use, capable of conducting multi-stage separation on tungsten ore and removing magnetic impurities, capable of improving the separation effect, high in separation efficiency and good in separation effect.

The invention relates to the technical field of image processing, and discloses an ore sorting image processing method, device and equipment, a medium and a product, the method comprises the steps that an X-ray image of to-be-sorted ore is acquired, and the to-be-sorted ore comprises a plurality of ore particles; determining a target pixel region of at least one target ore particle in the X-ray image, wherein the target ore particle is an ore particle with a particle size value greater than a preset particle size threshold value in the plurality of ore particles; and performing logarithmic transformation on the pixel value of each pixel point in the target pixel region to obtain a target image of the target ore particles. According to the method, target ore particles with the particle size exceeding a preset threshold value in a plurality of ore particles are focused in a targeted manner, the pixel difference of an ore spot area originally covered by an overall deep shadow can be effectively amplified by means of the characteristic of compressing the dynamic range of a bright part and expanding the dynamic range of a dark part of logarithmic transformation, so that the pixel difference can be clearly highlighted from the overall shadow; and the distinguishing degree of the concentrate area is greatly improved.

The invention discloses continuous solid-state microwave intelligent ore sorting equipment which comprises a conveying device, a feeding device, an associated regulation and control device, a material homogenizing device, a microwave radiation device, a recognition device and a sorting device. Wherein the conveying device is used for continuously conveying ores through a plurality of conveying channels; the feeding device and the conveying device are dynamically linked through the associated regulation and control device, so that continuous and uniform feeding is ensured; the material uniformizing device performs two-stage material distribution through the material spacing assembly and the material correcting assembly, so that the ores pass through the recognition area in a spaced arrangement manner; the microwave radiation device is used for selectively heating the ores in the channels with different particle sizes; the recognition device recognizes the grade through infrared thermal imaging and an intelligent algorithm. And the sorting device quickly sorts according to the recognition result. The full-process automation from feeding to sorting is realized, the problems of particle size interference, non-uniform material distribution, insufficient irradiation time and the like are effectively solved, the sorting precision, the processing efficiency and the stability are remarkably improved, and the subsequent mineral separation energy consumption is greatly reduced.

This invention belongs to the field of mineral processing, and particularly relates to a magnetic ore separation device based on a Hall sensor. A high-efficiency, low-energy-consumption, low-pollution, and high-accuracy magnetic ore separation device based on a Hall sensor includes a workbench; a conveying mechanism is installed on the top of the workbench, and the conveying mechanism has multiple conveying channels; an identification mechanism is installed inside the conveying mechanism and connected to the workbench, and the identification mechanism identifies the ore through the Hall effect; a material distribution mechanism is installed at one end of the workbench. This invention utilizes the fact that magnetite in the ore changes its magnetic induction intensity when passing through a constant magnetic field. This change is detected by the identification mechanism, and the control box automatically controls the material distribution mechanism to complete the pre-selection of magnetite by analyzing the information contained in the sensor signals within the identification mechanism in real time, achieving a high-efficiency, low-energy-consumption, low-pollution, and high-accuracy mineral processing effect.

The application provides a neutron-photon fusion ore sorting method and system, comprising: generating target photon rays and target neutron rays through a ray conversion target; irradiating an ore with the target photon rays and the target neutron rays to obtain transmitted target photon rays and transmitted target neutron rays transmitted through the ore; determining the grade of the ore according to the transmitted target photon rays and the transmitted target neutron rays transmitted through the ore received by a detector, and the target photon rays and the target neutron rays; and determining the ore as a target ore for sorting when the grade of the ore meets a set condition. The application aims to efficiently and at low cost sort lithium ores according to grade.

The utility model discloses an X-ray intelligent sensing sorting machine, which relates to the field of ore sorting machines and comprises a conveyor, a door-shaped frame is arranged in the middle of the conveyor, a mounting shell is fixedly connected to the top surface of the inner wall of the door-shaped frame, an X-ray mechanism body is fixedly connected to the bottom end of the mounting shell, and heat dissipation holes are formed in one side of the mounting shell. A filter screen is fixedly connected into the heat dissipation hole, a cleaning brush is slidably arranged on one side of the filter screen, and the cleaning brush is in movable contact with the filter screen; fixing plates are fixedly connected to the two sides of the top face of a machine frame of the conveyor, and a discharging plate is arranged in the two fixing plates in a sliding mode and arranged in an inclined mode. According to the ore discharging device, the discharging plate can directionally guide ore to fall, splashing or accumulation of the ore due to impact is avoided, the discharging plate, the through groove, the second sliding block and the damping spring are matched with components, energy generated when the ore falls is absorbed through elastic deformation, the impact force of the ore to the discharging plate is reduced, and the ore discharging effect is improved. And ore fragmentation or equipment damage caused by rigid collision is avoided.

This disclosure relates to the field of sorting equipment technology, specifically to an ore sorting method, classification system, and sorting machine. The ore sorting method includes: acquiring a surface image of the ore to be sorted; determining a primary classification result of the ore to be sorted based on the surface image using a primary classifier; responding to the primary classification result being a textured ore, determining a secondary classification result of the ore to be sorted based on the texture features of the surface image using a secondary classifier; determining a tertiary classifier from multiple tertiary classifiers as the final classifier based on the primary and secondary classification results; and determining the final classification result of the ore to be sorted based on the surface image using the final classifier. According to this disclosure, the ore to be sorted can be finely grouped by texture based on the surface image, and the corresponding tertiary classifier can be used to accurately determine the final classification result based on the fine texture grouping, thereby achieving accurate classification of the ore to be sorted.

This invention belongs to the field of ore sorting technology. It discloses a control system and method for ore target tracking and precise rejection in high-speed sorting. By acquiring multi-view imaging data and surface texture features of the ore, an edge scattering intensity distribution map is constructed. This map is then spatially decomposed to extract high and low frequency components. The radial distance deviation function between the true boundary and the scattering halo boundary is calculated. An edge scattering compensation model is constructed to perform edge shrinkage processing, obtaining the true contour data of the ore. A ore trajectory prediction model is established based on the conveyor belt motion parameters to accurately calculate the spatiotemporal coordinates of the ore arriving at the rejection area. A precise control signal sequence is generated based on the response delay characteristics of the rejection actuator. This invention effectively improves the accuracy of volume estimation and enhances the accuracy and efficiency of ore sorting in high-speed environments.

This invention discloses a jetting compensation method for ore sorting machines based on AI video image dynamic capture, belonging to the field of intelligent ore sorting technology. The method includes the following steps: a feature extraction step: acquiring real-time video images recording moving target ore, and extracting two independent feature sets for each target ore in the real-time video image, the feature sets including a basic kinematic feature set and a secondary motion risk feature set; a parallel prediction step; a decision fusion step: fusing the baseline predicted landing point and the trajectory compensation vector to generate the final predicted landing point of the target ore; and an instruction generation step. This invention, by establishing a secondary motion compensation model, can accurately predict and quantify trajectory deviations caused by non-ideal factors such as material surface slippage and rotation. By fusing this compensation vector with the prediction results of the basic physical model, the accuracy of the final landing point prediction is significantly improved.

The application discloses a kind of parameter optimization method and system of XRT ore sorting machine imaging structure, including obtaining the structure parameter information of target XRT ore sorting machine;In simulation software, the simulation model of target XRT ore sorting machine is constructed;The influence of each element in X-ray imaging structure on image signal-to-noise ratio is studied and the final influencing factor is determined;With signal-to-noise ratio maximum and X-ray source power minimum as optimization goal, with actual working condition and process condition as constraint, the parameter optimization model of XRT ore sorting machine imaging structure is constructed and solved, and the parameter optimization of target XRT ore sorting machine imaging structure is completed.The application is accurately modeled and simulated to target XRT ore sorting machine, and the construction and solution of targeted parameter optimization model are carried out after determining the influencing factor of parameter, not only realize the parameter optimization of target XRT ore sorting machine imaging structure, but also the scheme of the application is relatively simple, more accurate, and better effect.

The invention relates to the technical field of ore washing, and discloses a mine ore classification mechanical washing system which comprises a material stacking unit, the material stacking unit is used for soaking to-be-washed ore, a vibration unit is arranged on the lower side face of the material stacking unit and can vibrate the material stacking unit, and a cleaning unit is connected to the side face of the material stacking unit. A door opening and closing unit is arranged on the side face of the material stacking unit and communicates with the material stacking unit and the cleaning unit, a material rolling unit communicating with the door opening and closing unit is arranged on the inner side wall of the cleaning unit, and a cleaning component is arranged in the cleaning unit. According to the ore cleaning device, the material stacking unit is arranged and used for temporarily storing uncleaned ore, a water source is arranged in the material stacking unit, the uncleaned ore is soaked, viscous substances on the surface of the ore are diluted and softened, and the ore cleaning effect of the cleaning component is improved; and the ore cleaning effect is improved.

The utility model discloses a novel electric separator of heating plate, including the cabinet, the inside of cabinet includes drum cylinder, the upper portion of cabinet is installed with the feeding inlet, the inside installation of feeding inlet has rear arc plate and front arc plate, rear arc plate and front arc plate are symmetry installation, the rear end of rear arc plate is installed with ceramic plate, the inside installation of ceramic plate has heating coil, the rear portion of feeding inlet is installed with power module, and power module and heating coil are electric connection, and rear arc plate is metal material. The utility model discloses through being equipped with the front arc plate and rear arc plate of arc structure, based on heating coil combination inside's rotating plate, let the ore particle of entering the feeding inlet can with the rotating rate of rotating plate rapidly preheats in the inside, and the output direction of adjusting ore particle and dispersing the ore particle of gathering, more suitable bottom's drum cylinder work flow, has increased electric separator's work efficiency and ore separation quality.

The utility model belongs to the field of ore crushing, and discloses a raw material crushing device for ore separation, which comprises a support, the support is arranged above the ground, a first crushing box and a crushing structure are fixedly arranged in the middle of the support, the crushing structure is arranged in the first crushing box, and the crushing structure comprises a hammer, an inclined plate and a second crushing roller. Two inclined plates capable of adjusting the gradient are arranged in the first crushing box, two second crushing rollers capable of crushing stones are arranged below the inclined plates, when a spiral block rotates to a cylinder, a transmission rod is driven to ascend, a smashing rod and three hammers are driven to ascend, when the spiral block is far away from the cylinder, the smashing rod drives the three hammers to quickly descend, and the stones are crushed. The cone bodies below the three hammers rapidly hit stones, the stones are hit into small blocks to fall onto the upper portions of the two second crushing rollers to be further crushed, the two second crushing rollers and the three hammers are matched with each other, the large-size stones are synchronously treated, and the crushing efficiency of the large-size stones is high.

The application provides a mineral separation method and system. The method comprises the following steps: a raw ore processing step, processing raw ore, screening out ore with a first particle size range, ore with a second particle size range and ore with a third particle size range, and outputting the ore with the first particle size range; a rough separation step, processing the ore with the third particle size range to obtain ore smaller than the third particle size range; and a concentration step, processing the ore smaller than the third particle size range and the ore with the second particle size range, and outputting the processed ore. The application can improve the grade of products, ensure higher grade concentrates, provide higher quality raw materials for ore dressing plants, effectively ensure the separation effect, realize the reuse of low-grade raw ore, improve the utilization rate of raw ore, improve the operation yield and running efficiency of ore separation, increase the available resource amount for enterprises, and bring greater economic and social benefits.

The utility model provides a niobium ore separation washing water series connection swirler which comprises a first-stage swirler and a second-stage swirler connected with the first-stage swirler in series, the first-stage swirler comprises a first-stage swirler overflow pipe, a first-stage swirler feeding body and a first-stage swirler flat bottom column section which are sequentially connected through connecting bolts, the second-stage cyclone comprises a second-stage cyclone overflow pipe, a second-stage cyclone feeding body and a second-stage cyclone flushing cone section which are sequentially connected through connecting bolts. The second-stage cyclone is tangentially flushed to the second-stage cyclone through the flushing conical section of the second-stage cyclone, fine-particle niobium minerals in underflow are flushed into inner rotational flow to be discharged from the second-stage overflow pipe, the separation effect and separation efficiency of the niobium minerals are improved, the niobium mineral grade of a second-stage overflow product is improved, and the next-step process treatment of the niobium minerals is facilitated.

The invention relates to the technical field of ore sorting, in particular to an intelligent image recognition and classification method and system for refractory ores, and the recognition method comprises the following steps: S1, obtaining an original multi-dimensional data set; s2, constructing a frequency domain feature data set through frequency domain feature extraction; s3, constructing a double-domain constraint reconstruction model taking the three-dimensional dielectric constant matrix as an optimization variable; s4, outputting a mineral type or defect type label of each candidate region; according to the method, a double-domain constraint reconstruction model is constructed, spatial projection data and frequency-domain spectral features are introduced as physical constraints in the reconstruction process, artifacts generated by strong scattering and diffraction of terahertz waves in an ore microstructure are effectively inhibited, and therefore the artifact-removed three-dimensional image is output; the accuracy of distinguishing the real defect and the structure is obviously improved; and the refractory ores are intelligently classified, so that the detection reliability and the recognition precision of the refractory ores are remarkably improved.

This disclosure relates to the field of ore sorting technology, specifically to image recognition methods, material sorting methods, recognition devices, and sorting equipment. The image recognition method includes: acquiring a ray image of the material using a ray device and a color-sorted image of the material using a color-sorting camera; determining the ray contour of the material based on the ray image and the color-sorted contour of the material based on the color-sorted image; determining the motion state of the material relative to the conveying device based on the ray contour and the color-sorted contour; if the motion state is motion, then: determining a candidate contour in the color-sorted image corresponding to the ray contour based on the ray contour; and adjusting the candidate contour based on its position in the color-sorted image to obtain a first target contour of the material in the color-sorted image. This method can effectively improve the accuracy of contour matching between the ray image and the color-sorted image, thereby improving the accuracy of image recognition. In the material identification and sorting process, it improves the accuracy of material identification, thus improving the accuracy of sorting.

The utility model discloses an ore sorter X-ray source mounting structure, which relates to the technical field of ore sorters, and comprises an X-ray source body and a sorter shell, the top surface of the X-ray source body is fixedly connected with four mounting racks, the mounting racks are 7-shaped, two adjacent mounting racks are symmetrically arranged, the top surfaces of the mounting racks are fixedly connected with connecting rods, and the connecting rods are fixedly connected with the X-ray source body. A transverse plate is fixedly connected to the top end of the connecting rod, a limiting plate is slidably arranged between the inner walls of every two adjacent mounting frames, two first springs are fixedly connected to the bottom face of each limiting plate, and the bottom ends of the first springs are fixedly connected with the top face of the X-ray source body; two fixing blocks are fixedly connected to the bottom face of the sorting machine shell. According to the utility model, the symmetrical mounting frames form a door frame type constraint, the X-ray source deflection caused by eccentric vibration in the use process of the X-ray source body is prevented, and the first spring can provide dynamic shock absorption reserve, so that the X-ray source body is far away from the main vibration source frequency of the sorting machine, and the resonance risk is avoided.

The utility model provides a shell heat dissipation device for a manganese ore sorting machine, which comprises a shell, a plurality of fan mounting seats are arranged in the shell, centrifugal fans are arranged on the fan mounting seats, a plurality of vent holes are arranged on the fan mounting seats, the vent holes are communicated with different vent pipes, air valve adapters are arranged on the vent pipes, and vent valves are arranged on the air valve adapters. And the ventilation valve is arranged on the shell. The centrifugal fan is arranged in the shell and can disturb air in the cavity of the whole shell, so that heat is not gathered. The shell can introduce external air into the cavity of the shell through the ventilation valve and the ventilation pipe, and the purpose of cooling the interior of the cavity of the shell is achieved. The left side and the right side of the shell cavity are each provided with the two second ventilation valves, the second ventilation valves are directly communicated with the shell cavity, a certain pressure difference can be formed between the high temperature in the shell cavity and the external environment temperature, and heat in the cavity can be discharged through the two second ventilation valves.