61 results about "High Gravity" patented technology

The invention discloses a device for continuously preparing adiponitrile from adipic acid by supergravity, which is characterized in that a specially designed gas-in-liquid mixed feeding mode is firstly adopted, so that liquid of a falling film assembly is uniformly dispersed as far as possible, and meanwhile, by accurately controlling the reaction temperature in the falling film assembly, side reactions are reduced; secondly, the contact mode of gas and liquid of the falling film assembly is changed, the gas-liquid countercurrent contact mode is changed into gas-liquid parallel flow, and the liquid is prevented from being stopped in a pipeline through the gas-liquid parallel flow; and finally, mixing and mass and heat transfer effects of adipic acid and ammonia molecules in the reaction process are enhanced by using a supergravity assembly, so that adipic acid decomposition and coking in a bubbling section of a traditional reactor are effectively slowed down, the reaction efficiency and the product yield are improved, and side reactions are reduced.

The invention relates to a desulfurization and carbon removal method for a supergravity coupling impinging stream reactor, which is characterized in that a supergravity impinging stream device is driven by a motor to rotate, under the action of centrifugal force, an absorption liquid flows through a main pipeline and a sleeve outside the main pipeline to reach an impinging zone, and four groups of impinging streams are arranged in the impinging zone; the circle centers of the circular nozzles are distributed on the same circle, four groups of impinging streams are arranged in a surrounding manner to generate multiple impinging to form four primary impinging surfaces, every two radial jet flows collide with each other to form four secondary impinging surfaces, absorption liquid forms an atomized radial diffusion area under a non-immersion condition, and large-area atomized absorption liquid is generated. And the supergravity impinging stream device further stirs the flue gas and the atomized absorption liquid in the rotating process, so that the atomized absorption liquid in the shell is fully mixed and contacted with the gas, the gas-liquid absorption process is completed, and efficient desulfurization and carbon removal are realized.

The application belongs to the field of fine chemical industry and environmental protection, and particularly relates to a method for preparing metal triflate by using high gravity reaction. The method comprises the following steps: 1, using trifluoromethylsulfonyl chloride and anhydrous HF gas as raw materials to generate trifluoromethylsulfonyl fluoride gas; 2, performing gas-liquid contact reaction of the trifluoromethylsulfonyl fluoride gas with an alkali metal solution to obtain a mixed solution; 3, performing solid-liquid separation on the mixed solution by using a filter press, and the liquid phase is a triflate salt solution; 4, drying the triflate salt solution by using a spray dryer to obtain a solid-phase product triflate salt. The method uses trifluoromethylsulfonyl chloride and anhydrous HF as raw materials to replace triflic acid in the traditional method, and utilizes high gravity reaction, so that the production cost is greatly reduced. The process is simple, the obtained product triflate metal salt has low impurity content, is superior to the industry standard, the process is zero emission, and has good economic value and social value.

The invention discloses a supergravity device capable of promoting foaming and devolatilization of a high-viscosity polymer and an application method. The supergravity device comprises a shell, a motor, a distribution disc, a rotor, an ultrasonic generation device, a liquid feeding hole, a gas outlet, a liquid discharging hole and a gas inlet, a rotating shaft of the motor penetrates through the lower surface of the shell and extends into the shell; the upper end of the rotating shaft is fixedly connected with the rotor; a packing ring is fixed on the circumference of the upper surface of the rotor, and a cavity structure in the middle of the packing ring forms a liquid inlet cavity; a distribution disc fixedly connected with the upper surface of the rotor is horizontally arranged in the liquid inlet cavity; the motor is connected with the rotor through a rotating shaft; according to the method, ultrasonic energy is introduced into a super-gravity field, liquid film updating is enhanced through the sound field cavitation and fluid disturbance effect, and multi-scale coupling of the sound field and the gravity field is achieved in combination with interface structure and wettability regulation and control, so that the gas-liquid mass transfer rate and devolatilization efficiency are remarkably improved, and the TDI removal rate is larger than or equal to 90%.

The invention relates to the technical field of hydrogen fluoride purification, in particular to a device and a method for purifying hydrogen fluoride based on supergravity. The device comprises: a hydrogen fluoride raw material introduction pipe; the supergravity rectification part comprises a rotating motor, and a rotating inner cylinder, a first outer cylinder and a second outer cylinder which are sequentially arranged at intervals; a plurality of penetrating holes are formed in the first outer cylinder; the second outer cylinder is provided with a first gas phase inlet, a second gas phase inlet, a gas phase outlet, a liquid phase inlet and a liquid phase outlet, the first gas phase inlet is communicated with the hydrogen fluoride raw material ingress pipe, the first gas phase inlet and the second gas phase inlet are formed in the bottom of the second outer cylinder, and the liquid phase inlet is formed in the top of the second outer cylinder, penetrates through the first outer cylinder and is communicated with the liquid phase layer; the liquid phase outlet is formed in the bottom of the second outer cylinder; the reboiling unit is communicated with the liquid phase outlet and the second gas phase inlet; the heat exchange unit is communicated with the gas phase outlet and the liquid phase inlet; and the product storage tank is arranged between the heat exchange unit and the liquid phase inlet. The device achieves the dual purposes of equipment miniaturization and stable operation.

The invention discloses a method for preparing an MOR type titanium silicalite molecular sieve through supergravity and application, and the method comprises the following steps: 1) mixing a silicon source and water to form a mixture A, mixing an inorganic base, an aluminum source and organic amine R to form an initial mixture B, and simultaneously introducing the initial mixture A and the initial mixture B into a supergravity machine; (2) transferring the mixture C in the step (1) into a stirring kettle, and crystallizing; 3) filtering, separating, washing, drying and calcining the solid product to obtain a mordenite MOR molecular sieve; 4) mixing the MOR molecular sieve with an NH4Cl solution, stirring, filtering, washing, drying, and calcining to obtain an H-MOR molecular sieve; 5) mixing the H-MOR molecular sieve with a nitric acid solution, stirring, filtering, washing, drying and calcining to obtain a dealuminated MOR molecular sieve; and 6) supplementing titanium to the dealuminated MOR molecular sieve, and calcining to obtain the Ti-MOR molecular sieve. According to the method, the dealumination efficiency and the titanium content in the titanium silicalite molecular sieve can be remarkably improved.

The application relates to a high gravity-microwave assisted concentration device for water solution element analysis, which comprises an inner cavity, an outer cavity, a heat exchanger and a condensed liquid storage tank; a microwave generator is arranged in the inner cavity, an air inlet is arranged on the side wall, a flow guide plate is fixed on the inner side wall and can be rotated around the fixed shaft as the center, the microwave generator is arranged on the upper wall of the inner cavity and is close to the upper wall, a concentrated liquid discharge port is arranged at the bottom of the inner cavity, the outer cavity is fixed on the outer side of the inner cavity and completely wraps the inner cavity to form a sealed environment, a gap of 4cm-15cm is arranged between the outer cavity and the inner cavity, an inert gas pipeline connected with inert gas is fixed on the top of the outer cavity, and the bottom is connected with the concentrated liquid storage tank; one end of the heat exchanger is connected with the feeding port, the other end is connected with high-temperature steam of volatile liquid separated from the mixed fluid, and the bottom is connected with the condensed liquid storage tank. The device can shorten the concentration time and improve the concentration efficiency.

The invention discloses a method for preparing an M (at) molecular sieve catalyst through supergravity in-situ confinement and application thereof, and the method comprises the following steps: adding an active metal M into water, or mixing an active metal M salt with a ligand compound in water to form a first solution; mixing an aluminum source, a silicon source and a template guiding agent in water to form a second solution; dropwise adding the first solution into the second solution, and stirring at room temperature; preparing an M (at) molecular sieve silica-alumina sol precursor solution; introducing the obtained M (at) molecular sieve silica-alumina sol precursor solution into a supergravity reactor, and carrying out cyclic mixing and stepped heating crystallization; after crystallization is completed, cooling, washing and drying; and roasting the dried sample to obtain the M-coated molecular sieve catalyst.

The application provides a method and a high gravity separation nanomaterial machine, and belongs to the technical field of nanomaterial preparation, and comprises the following steps: 1) starting the high gravity separation machine to reach a set rotating speed; 2) feeding liquid into the feeding port of the machine, and entering the separation zone from the outer spiral flow channel entrance; 3) most of the feeding liquid flows along the outer spiral flow channel in a tangential direction, the particles in the feeding liquid are deposited on the inclined surface of the flow channel and slide outward, a small part of the feeding liquid gradually passes through the slits between the outer spiral flow channel and the top plate to produce shearing mixing effect on the sliding particles, and high-concentration suspension is formed and enters the collecting tank; 4) the feeding liquid leaves the separation zone, enters the backflow zone along the inner spiral flow channel entrance, and is sprayed out from the discharging port; and 5) the high-concentration suspension is rapidly deposited in the collecting tank, and the clear liquid enters the backflow zone from the backflow channel. The application significantly improves the separation efficiency, and can simply, rapidly, efficiently, at low cost and with high quality separate various nanomaterials.

Provided in the present application is a method for screening stress-resistant yeast suitable for very high gravity brewing. In the method, the stress-resistant yeast suitable for very high gravity brewing is obtained by performing screening on the basis of the trehalose content in the yeast and the residual sugar concentration under stress conditions after yeast activation.

The application discloses a preparation method of hydroxyapatite microspheres, which comprises the following steps: 1) mixing hydroxyapatite raw materials with water to prepare hydroxyapatite slurry; 2) feeding the hydroxyapatite slurry obtained in the step 1) into a high gravity reactor, and mixing and modifying in situ by adding a surfactant in the high gravity reactor; 3) spray drying the modified slurry to obtain hydroxyapatite microspheres; and 4) sintering the microspheres to obtain the hydroxyapatite microspheres. The hydroxyapatite microspheres prepared by the method have a density of 3.10-3.20 g / cm 3 , a compactness of greater than or equal to 95%, a crystallinity of greater than or equal to 95%, a particle size of 20-60 mu m, a degradation rate of less than 2% after being soaked in a simulated body fluid for 30 days, a single crystal phase, complete crystallization, stable structure, and difficulty in degradation, and the obtained microspheres have high sphericity, good dispersity, excellent compactness and crystallinity.

The invention provides a hydraulic power station for an oil delivery supergravity desulfurization line, which is used for supplying power to the oil delivery supergravity desulfurization line and comprises a plurality of groups of power generation units which are sequentially arranged at intervals in rows or columns. Each group of power generation unit comprises a closed hydraulic circulating pipeline formed by a left vertical pipeline, a right vertical pipeline, an upper transverse pipeline and a lower transverse pipeline, a magnetic lifting device is arranged at the upper part of the left vertical pipeline, a turbine is arranged at the lower part of the right vertical pipeline, and a generator is arranged outside the turbine; the hydraulic medium in the circulating pipeline is a conductive hydraulic medium, the hydraulic medium is lifted by the magnetic lifting device and impacts a rotor of the turbine to rotate after being accelerated by the magnetic fluid accelerator, and the rotor of the turbine drives the generator to operate through the magnetic coupler. Through a single machine arbitrary combination mode, the influence of the geographical environment is small, the combination is convenient, each unit works independently, and the maintenance is convenient.

This invention discloses a method for activating metal-organic framework (MOF) materials using a high-gravity rotating packed bed, comprising the following steps: 1) adding the MOF material to a solvent to obtain a MOF material suspension; 2) controlling the temperature and sealing the high-gravity rotating packed bed, and introducing the MOF material suspension into the high-gravity rotating packed bed through the inlet; setting the rotation speed of the high-gravity rotating bed, starting the motor, and continuously activating for 0.05-6 hours, then removing the material to complete the activation; 3) centrifuging, filtering, and drying the activated MOF material suspension to obtain the activated MOF material. This method can accelerate the dissolution / diffusion process of unreacted metal salts, organic ligands, and solvent molecules used in synthesis within the pores of MOF materials in the activation solvent, achieving highly efficient activation of MOF materials and significantly shortening the activation time.

The invention discloses a supergravity reactor based on microcell in-situ displacement heat and a system device thereof. The supergravity reactor based on micro-area in-situ heat displacement comprises a shell, a motor, a rotor filler, a stator, a first liquid inlet pipe, a second liquid inlet pipe and a refrigerant radial graded spraying system, the system device comprises a refrigerant input pipe, a main reaction material input pipe, a main reaction refrigerant input pipe, a supergravity reactor based on micro-area in-situ displacement heat, a product separation device and a refrigerant circulating device, the supergravity reactor overcomes the defect that radial mixing and heat transfer are not uniform due to an existing single-point feeding mode, and an enhanced reaction environment which is uniform in radial mixing and temperature field height and can be precisely regulated and controlled is provided for rapid exothermic reactions such as alkylation and sulfonation through an innovative micro-area compensation type structural design.

The present application relates to the technical field of high gravity reactor scale-up design, and particularly relates to a high gravity reactor industrial scale-up prediction method. The method comprises: obtaining an industrial scale high gravity reactor HGR3 according to the geometric similarity principle, carrying out fluid dynamics simulation, and constructing a fluid dynamics-mixing mass transfer two-dimensional evaluation system comprising multiple evaluation indexes; calculating the corresponding index weight of each evaluation index in the two-dimensional evaluation system by entropy weight method, and determining the weight priority according to the descending order of the index weight; screening the top three optimal structure parameters and rotational speed parameters in HGR3; determining the core iteration variable by sensitivity processing; obtaining the optimal structure parameters and rotational speed parameters in HGR3 by multi-objective optimization processing, and completing the high gravity reactor industrial scale-up prediction. The HGR3 predicted by the present application can stably prepare nano calcium carbonate, and the product has small particle size fluctuation and high qualified rate.

The invention relates to a method for separating and purifying an antioxidant 1010 by using supergravity, which belongs to a chemical separation and purification technology and adopts the links of raw material pretreatment, solvent preparation, supergravity core process, slurry post-treatment and the like. The method aims at molecular characteristics and purification requirements of the antioxidant 1010 by means of strengthening microscopic mass transfer and instantaneous mixing, constructing a uniform supersaturation field, triggering synchronous explosion nucleation and uniform growth, forming high-purity narrow-granularity crystals, inhibiting an amplification effect through continuous operation, and efficiently recycling a solvent to reduce energy consumption. The technical breakthrough of high purity, high efficiency and no amplification effect is effectively realized.

The application provides a supergravity microwave coupling reaction system and method, which can overcome the defects of the prior art, solve the problem that current supergravity equipment is difficult to process high-melting-point and high-viscosity materials, and cause the materials to be prone to caking, blocking and difficult to flow, and keep the material temperature from falling by the way of microwave device coupling supergravity device for heat compensation. The supergravity device designed in the application can complete the mass transfer process under the condition of timely heat compensation in a strong centrifugal force environment, and the molecular diffusion and interphase mass transfer process is much faster than that under a conventional gravity field, the huge shear force can tear the liquid into micron or even nanometer liquid film, liquid line and liquid drop, generate a huge and rapidly updated phase interface, strengthen the mass transfer process, and can make the separation efficiency of the product increased by more than 50%.

The invention relates to the technical field of furfuryl alcohol processing, in particular to a device and a method for producing furfuryl alcohol by using a supergravity reactor. Comprising a supergravity reactor body, and a transfer tank, a condenser and a purification tank are arranged on the left side of the supergravity reactor body. According to the device, a movable rod can rotate through a motor, the movable rod rotates to enable a plurality of air outlet holes to move up and down through a reciprocating threaded guide sleeve, a movable column and a hollow rod, meanwhile, the movable rod rotates to enable the movable column to rotate, and the movable column rotates to enable the air outlet holes to do circular motion through the hollow rod; the hollow rod rotates while performing circular motion, and the hollow rod rotates to enable the air outlet holes to rotate, so that steam is in contact with furfural solutions at different heights, different horizontal positions and different vertical positions, the heat transfer area is enlarged, the purification efficiency is improved, and meanwhile, furfural residues caused by furfural decomposition or dead angle generation due to local overheating are avoided.

The present invention discloses a high gravity centrifuge, which comprises a base and a frame fixed on the base. A cylindrical centrifugal housing is installed on the frame. An air inlet pipe joint communicating with its inner cavity is arranged on the side ring wall of the centrifugal housing. The air outlet ends of the air inlet pipe joint are arranged along the tangent direction of the side ring wall of the centrifugal housing. A liquid inlet pipe is arranged on the side wall of the centrifugal housing. One end of the liquid inlet pipe extends into the inner cavity of the centrifugal housing and is close to the air outlet end of the air inlet pipe joint, and at least one atomizing nozzle is installed on the extending end of the liquid inlet pipe. A liquid discharge pipe is arranged at the bottom of the centrifugal housing, and an exhaust pipe joint communicating with its inner cavity is connected to one side end face of the centrifugal housing. A cutting rotor mechanism is arranged in the centrifugal housing. The present invention is not only reasonable in design, but also has a high degree of liquid dispersion, and will not form a water film, resulting in the phenomenon of gas dilution or insufficient dissolution.

The application discloses a method for preparing 4-hexen-3-one by using an aluminum chloride ionic liquid combined with a high gravity reactor, and belongs to the technical field of compound preparation. The method comprises the following steps: adding dichloromethane and an aluminum chloride ionic liquid into a storage tank, stirring and cooling; pumping propionyl chloride into a high gravity reactor, introducing propylene gas, and controlling the reaction temperature; after the reaction is completed, the reaction liquid is separated into layers, and the ionic liquid layer is separated out and recycled; the dichloromethane layer is washed by a sodium carbonate aqueous solution, and then is transferred to a rectifying column; dichloromethane is recovered by normal pressure distillation, and 4-hexen-3-one products are collected by reduced pressure distillation. Compared with the prior art, the application significantly improves the yield of 4-hexen-3-one by optimizing the catalyst system and the reaction conditions, and the catalyst system of the application shows a relatively low activity decline rate in multiple cycles, thereby reducing the production cost and environmental pollution, and having a good industrial application prospect.

The utility model relates to a supergravity rectifying machine with improved moving coils, which comprises a machine body, and a rotating shaft, a moving plate, a static plate, moving coils and static coils which are arranged in the machine body, the rotating shaft is rotationally arranged and drives the moving plate to rotate, the moving plate is opposite to the static plate, a plurality of static coils are arranged on the static plate, and a plurality of moving coils are arranged on the moving plate and are in one-to-one correspondence with the static coils. A plurality of flowing through holes are formed in the movable ring, the movable ring comprises a prototype part, a parallel part and a connecting part, the prototype part is arranged on the movable plate and is parallel to the static ring, the parallel part is located on the other side, opposite to the prototype part, of the static ring, the lowest end of the parallel part is connected with the highest end of the connecting part through the connecting part, and the connecting part is parallel to the movable plate; the flowing through holes are annularly formed in the prototype part and the parallel part, the lowest end of the parallel part extends downwards to be provided with an extending part, and a flow guide pipe is arranged at the top of the machine body and is opposite to the prototype part and the parallel part.

The present disclosure relates generally to packing materials for high gravity devices and, more particularly, to reticulated, non-metal foam packing materials for use in rotating packed bed apparatus.

The application discloses a method for preparing fluorine-containing aromatic hydrocarbon by using a high gravity reactor and belongs to the technical field of organic fluorine chemical industry. The method comprises the following steps: dissolving aryl halide in a polar aprotic solvent to obtain an aryl halide solution; dispersing alkali metal fluoride in the polar aprotic solvent to obtain an alkali metal fluoride suspension; feeding the prepared aryl halide solution as one feed and the prepared alkali metal fluoride suspension as another feed into a high gravity reactor continuously, fully mixing the two feeds in a high gravity field at a reaction temperature and making the two feeds undergo halogen exchange fluorination, and after the reaction liquid flows out of the high gravity reactor, the target fluorine-containing aromatic hydrocarbon product is obtained through separation and purification. The method has the advantages of high mass transfer efficiency, short reaction time, few by-products, low energy consumption and high intrinsic safety.

The present application relates to the technical field of aquaculture equipment, and proposes a lobster breeding net cage feeding integrated device, which comprises a floating frame assembly, the floating frame assembly comprises a buoyancy frame, the outer wall of the buoyancy frame is fixed with a buoy, the corner position is fixed with a movable support, and the top frame is fixed between the top ends of the movable supports; the feeding system comprises a storage assembly and a feeding assembly, the storage assembly is installed in the top frame through an elastic support mechanism, and the feeding assembly is installed at the bottom end of the storage assembly; the breeding unit comprises a net cage assembly and a slag removal mechanism, and the net cage assembly is fixed at the bottom of the buoyancy frame. Through the above technical scheme, the problems of the existing lobster net cage breeding device are solved, such as the increase of the lobster escape risk caused by the increase of the sinking amount of the floating frame after feeding, the influence of the high gravity center of the feeding system on the stability of the floating state of the device, and the blockage of the slag removal pipeline at the bottom of the net cage during the pumping process due to the accumulation of waste slag, thereby reducing the slag removal efficiency.

The invention relates to the technical field of dust removal devices, in particular to a high gravity field coupling chemical agglomeration reinforced dust removal device. The top of the frame is communicated with an impurity discharge pipe and an air inlet pipe internally provided with an agglomeration agent injection pipe, an outer valve cylinder is fixedly installed in the middle of the frame, the inner wall of the outer valve cylinder is rotationally connected with an inner valve ring, a reversing frame and an upper valve ring are rotationally installed on the frame, four dust removal mechanisms are arranged on the reversing frame in the circumferential direction, and each dust removal mechanism comprises a shell and a support which are fixedly installed on the reversing frame. Two branch pipes are communicated between the shell and the inner valve ring, a dust removal vibration frame is connected to the support in a sliding mode, a sleeve shaft and a transmission shaft are rotationally connected to the support, and a mandrel is rotationally connected to the sleeve shaft. The device has the beneficial effects that through the design of the rotary frame and the four-station annular layout, the four dust removal mechanisms are arrayed on the rotary frame along the circumference and synchronously enter the four stations of air inlet, agglomeration, dust removal and self-cleaning under the driving of the transposition motor.

The application discloses a kind of supergravity high-efficiency foaming foam separation device and method, belong to chemical separation equipment field.The device includes supergravity rotating packing bed, foam rectifying tower and foam stripping tower;Foam rectifying tower is connected with the top of supergravity rotating packing bed;Foam stripping tower is connected with the bottom of supergravity rotating packing bed;The gas inlet of foam stripping tower bottom and supergravity rotating packing bed is connected with gas conveying pipeline, and gas conveying pipeline is composed of fan, gas buffer tank, gas valve, gas flow meter connected in sequence;Supergravity rotating packing bed connects liquid conveying pipeline, and liquid conveying pipeline includes raw material liquid tank, pump, liquid valve and liquid flow meter connected in sequence.The application solves the problems of traditional foam separation equipment, such as large and uneven bubbling, slow mass transfer efficiency and low separation efficiency, increases the effective area of gas-liquid contact by using supergravity technology, greatly improves the separation effect, and realizes the efficient separation of target substance.

The application discloses a super gravity solvent purification bed, which comprises a heat preservation shell and multiple layers of cylinder bodies. Flanges are arranged at the upper and lower ends of each cylinder body. The cylinder bodies of adjacent layers are detachably connected through the opposite flanges. A first limiting groove is arranged at the outer periphery of the uppermost flange, and a second limiting groove is arranged at the outer periphery of the lowermost flange. The heat preservation shell is sleeved outside the cylinder bodies, and the upper end of the heat preservation shell is connected with the first limiting groove, and the lower end of the heat preservation shell is connected with the second limiting groove. The super gravity solvent purification bed has the advantages of convenient disassembly and assembly, simple manufacturing, and beautiful appearance.

In order to solve the problems of long time consumption and high cost in the existing production of iron oxide red, the invention provides a method for preparing iron oxide red by using a by-product ferrous sulfate obtained by producing titanium dioxide in combination with a supergravity machine, which comprises the following steps of: dissolving the titanium dioxide by-product ferrous sulfate with the weight of A in water with the weight of B under the stirring action at normal temperature; adjusting the pH value of the ferrous sulfate solution to 4-5 through an alkaline liquid; putting the obtained solution into a supergravity machine, stirring and oxidizing, and sequentially carrying out solid-liquid separation, washing and drying on the oxidized ferrous acid solution to obtain solid ferric oxide; and finally drying in a drying oven to obtain the iron oxide red. According to the iron oxide red prepared by the method, the content of impurity sulfur is remarkably reduced while high specific surface and high activity of the iron oxide red are reserved; and the oxidation time is greatly saved, and the production efficiency is improved.

The application discloses a supergravity separation equipment under negative pressure and belongs to the technical field of waste gas treatment devices. The supergravity separation equipment comprises a shell, an L-shaped support is fixedly installed at the rear side of the shell close to the bottom, a driving motor is fixedly installed at the top of the L-shaped support close to the front side, a transmission rod is fixedly installed at the power output shaft shaft end of the driving motor, a through hole is formed in the middle position of the inner cavity bottom of the shell, a connecting shell A is fixedly installed in the inner cavity of the through hole, a connecting shell B is fixedly sleeved on the outer periphery of the transmission rod close to the middle position, and ball bearings are arranged on the sides, close to the middle positions, of the connecting shell A and the connecting shell B. When the inflation air bag is heated and inflated, the deformation of the inflation air bag can make the insulating ring move to the outer periphery, so that the conductive block can be in contact with the electrode sheet, power can be provided for the fixed motor, the subsequent cooling work can be conveniently carried out, manual control is not needed, the ball bearings can be cooled in time, and the use effect of the device is improved.

The application relates to the field of soil materials, and aims to provide a high-density high-strength improved soil based on barite powder and a preparation method thereof.A high-density high-strength improved soil based on barite powder comprises undisturbed soil material, barite powder, cement and additional water, the weight ratio of the undisturbed soil material, the barite powder and the cement is 1:(0.2-0.8):(0.1-0.2), the weight ratio of the cement and the additional water is 1:(0.4-0.6), wherein the particle density of the barite powder is 3.0 g / cm 3 -4.0 g / cm 3 , and the particle size of the barite powder is 0.075 mm-0.15 mm.The undisturbed soil body is improved by the waste barite powder, the mechanical properties of the undisturbed soil body are effectively improved, and good economic benefits are achieved.