29results about How to "Good cracking effect" patented technology

The utility model relates to the technical field of walnut processing, and discloses a walnut ultrasonic shell breaking and kernel taking device which comprises a rack, and a walnut conveying mechanism, a walnut shell breaking mechanism and a material collecting mechanism which are arranged on the rack, the walnut conveying mechanism is used for driving the falling walnuts to move and conveying the walnuts to the walnut shell breaking mechanism; the walnut shell breaking mechanism drives walnuts to move and extrudes and breaks shells of the walnuts through ultrasonic high-frequency vibration; and the material collecting mechanism is used for screening and collecting the walnut kernels and the walnut shells after shell breaking. Through the walnut conveying mechanism, the walnut shell breaking mechanism and the material collecting mechanism, the process of walnut conveying, extrusion shell breaking and recovery is achieved, ultrasonic waves are applied to the field of walnut shell breaking, Yunnan walnuts are hard in shell and small in shell-kernel gap, the characteristics that high-frequency vibration under the mechanical effect of the ultrasonic waves is suitable for breaking of hard and brittle materials are utilized, walnut shell breaking is assisted, and the walnut shell breaking efficiency is improved. The shell breaking rate and the whole kernel rate are improved.

The invention discloses a liquid nitrogen freezing and carbon dioxide blasting combined anti-reflection device and method. The device comprises a freezing pipe and an anti-reflection assembly. The anti-reflection assembly is mounted on the inner side of the freezing pipe; the anti-reflection assembly comprises a flexible air bag, an excitation device and a sealing positioning ring; the sealing positioning ring sleeves the outer side of the flexible air bag, and the flexible air bag is provided with an extension section; an end socket is mounted outside the sealing positioning ring in a sleeving manner, and the sealing positioning ring fixes the extension section on the end socket; the exterior of the end head is fixedly connected with the freezing pipe; the excitation device is arranged in the flexible air bag; and a firing line is mounted on the excitation device. The mechanical property of the coal body is optimized and improved through liquid nitrogen freezing, so that the mechanical strength of the coal body is enhanced, the brittleness is greatly improved, and then CO2 phase change blasting is performed to crack the coal seam; for a low-permeability soft coal seam, hole collapse caused by soft coal in single blasting is avoided, more cracks can be generated in the coal seam after CO2 blasting, the fracturing and permeability increasing effects are greatly improved, and a good promoting effect is achieved on gas extraction.

The utility model discloses a polyethylene insulated cable, which relates to the technical field of cables, and comprises a cable body, the surface of the cable body is provided with a plurality of annular grooves at intervals, the annular grooves are symmetrically provided with a plurality of reinforcing raised lines, the reinforcing raised lines are respectively arranged on the annular grooves in an annular array, and the reinforcing raised lines are arranged in the annular grooves. The two symmetrical reinforcing protruding strips are arranged in a staggered mode, receding gaps are formed between the opposite ends of the reinforcing protruding strips and the roots of the annular grooves respectively, and a plurality of reinforcing ribs are arranged between every two adjacent annular grooves. According to the utility model, under the action of the annular groove, the stress concentration of the cable during bending is reduced, the cable material is allowed to be more freely deformed during bending, the risks of material damage and performance reduction caused by the stress concentration are reduced, in addition, the reinforcing raised lines improve the compression resistance and the compression resistance capability of the annular groove during deformation, and the service life of the cable is prolonged. The service life is further prolonged; the mechanical property of the surface is further improved.

The present invention adopts a hydrothermal synthesis method to prepare a Beta zeolite molecular sieve with chiral pore crystal form A enrichment in an alkali-fluorine system, the proportion of crystal form A is as high as more than 90%, and it has a single crystal multi-level pore structure. This molecular sieve exhibits excellent catalytic activity, selectivity and stability in the performance of catalytic cracking, and has great potential application value in the fields of petrochemicals, fine chemicals and life sciences.

The invention provides a virus-like vector lysis solution and a virus-like vector lysis method. The virus-like vector lysis solution comprises Tris, EDTA (Ethylene Diamine Tetraacetic Acid), NaCl, TritonX-100, sodium deoxycholate, SDS (Sodium Dodecyl Sulfate), Tween 20 and a protease inhibitor mixture. Cas9 protein is wrapped in the viroid vector; the acquisition method of the viroid vector comprises the step of transfecting plasmids containing a structural gene sequence for expressing the viroid vector into virus producing cells to obtain the viroid vector. The cracking method of the viroid vector comprises the following steps: S1, using: carrying out cracking treatment on a viroid vector solution by using the cracking solution; and S2, performing Cas9 protein content detection on substances released after the carrier is cracked. The invention establishes a formula of the special lysate for VLP and a corresponding cracking method, and ensures high cracking efficiency.

This invention discloses a method for increasing shale gas production from multi-stage fracturing shale formations. First, water containing water-absorbing resin is intermittently injected into the shale gas well, impacting the shale layer and creating multiple fractures, forming a primary fracturing process. Next, liquid nitrogen and sodium particles are injected into the shale gas well. The resin, already saturated with water, remains within the fractures. At this point, the liquid nitrogen cools the shale layer below its freezing point, causing the saturated resin to freeze and rapidly expand, forming a secondary fracturing process. Then, as the injected liquid nitrogen continues to vaporize, it further freezes the water and water-absorbing resin adsorbed by the shale, forming a tertiary fracturing process. When the temperature of the shale layer exceeds its freezing point, the expanded ice on the water-absorbing resin melts into water. At this point, the sodium particles react with the water, releasing a large amount of heat, causing the shale layer temperature to rise rapidly, creating a thermal shock to the low-temperature shale layer, forming a quaternary fracturing process. This completes the multi-stage fracturing process of the shale layer, effectively improving the extraction efficiency of shale gas.

The invention discloses a wind power fluctuation stabilizing system based on an energy storage system, and relates to the technical field of data processing. An interactive security control unit is set to deconstruct wind power side data in a binary format through a preset data reconstruction rule, a wind power control terminal receives and restores the wind power side reconstruction data, and a connected circle for assisting in deconstruction is introduced in the process. And a plurality of connected blocks are selected based on the data characteristics of 16 four-bit binary numbers to determine a plurality of connected domains, an external connected component sequence and a derived connected component sequence are obtained, and a plurality of to-be-recombined sequences extracted from the wind power side data are calculated, so that the complexity and the cracking performance of wind power side data processing are remarkably improved, and the reliability of the wind power side data processing is improved. The security of the wind power side data in the transmission process is greatly improved, and the security of the target enterprise in the wind power side data transmission process is further ensured.

According to the static expansion fracturing material for upward drilling and the using method, calcium oxide serves as a main material, magnesium oxide, titanium oxide and citric acid serve as auxiliary materials, the main material and the auxiliary materials are both dry materials, and the main material and the auxiliary materials are evenly stirred, mixed and ground to obtain the static expansion fracturing material. The mass ratios of the calcium oxide, the magnesium oxide, the titanium oxide and the citric acid are 85.5%, 5.5%, 7.5% and 1.5% respectively. The invention has the advantages of scientific principle, easily available ingredients, simple manufacturing process, low cost, good cracking effect, advanced injection or installation, slow expansion cracking after encountering water, and safe and reliable use process.

The invention discloses a Y0. 4Sr0. 6MnO3 perovskite porous loading material as well as a synthesis method and application thereof, and belongs to the field of cracking CO2 fuel synthesis catalyst materials. The invention aims to solve the problems of low stability, low CO yield and low CO2 conversion rate of a catalytic material in a solar thermochemical fuel preparation process (two-step CO2 catalytic cracking). The method comprises the following steps: mixing EDTA (Ethylene Diamine Tetraacetic Acid) with an ammonia water solution, adding deionized water, heating in a water bath, and magnetically stirring; adding Y (NO3) 3.6 H2O, Mn (NO3) 2.4 H2O and Sr (NO3) 2 powder, and then adding citric acid monohydrate; adding ammonia water to adjust the pH value, and keeping heating and stirring; drying, grinding, calcining, then grinding, mixing with deionized water, dropwise attaching turbid liquid to the SiC porous framework, and purging; and drying. According to the preparation method, the Y0. 4Sr0. 6MnO3 powder material is attached to the SiC porous framework, so that the gas-solid reaction contact area of the powder material and CO2 is increased, and the oxidation-reduction reaction rate is increased; the heating rate of the material is accelerated, and the photo-thermal conversion efficiency and the overall efficiency are improved.

The utility model discloses an anaerobic cracking kiln, particularly relates to anaerobic cracking kiln technical field, including the kiln body, the bottom end of kiln body is fixedly equipped with the heater, the inside of kiln body is equipped with the filter assembly, the filter assembly includes horizontal plate, filter screen, four support plate and four lead screw, filter screen is fixed in horizontal plate, four support plate is located the horizontal plate bottom, four lead screw is located in the horizontal plate bottom, four lead screw is located in the horizontal plate bottom, four lead screw is located in the horizontal plate bottom. The four supporting plates are fixedly connected with the front side and the rear side in the kiln body correspondingly, and the bottom ends of the four lead screws are fixedly connected with the four supporting plates correspondingly. The two hydraulic cylinders extend to drive the transverse plate to move upwards, so that garbage is driven to move upwards, in the same way, when the two hydraulic cylinders contract, the garbage moves downwards, the process is repeated, the garbage is vibrated, the garbage can be fully heated, meanwhile, liquid penetrates through the filter screen, and the four supporting plates support the transverse plate, so that the garbage can be fully heated. The four lead screws prevent the transverse plate from deflecting during vertical movement, the structure is simple, garbage is evenly heated, and the cracking effect is good.

The invention relates to the technical field of sewage treatment and resource utilization, in particular to a method for synergistically enhancing phosphorus release of excess sludge by potassium persulfate and EDTA (Ethylene Diamine Tetraacetic Acid). According to the method for synergistically enhancing phosphorus release of the excess sludge through potassium persulfate and EDTA, potassium persulfate and EDTA are mixed, added into the excess sludge, stirred and filtered, and phosphorus-containing supernate is obtained. According to the method, potassium persulfate and EDTA are used for treating sludge under the normal temperature condition, the release efficiency of phosphorus in excess sludge is further improved with relatively low energy consumption, meanwhile, along with rupture of cell walls of the sludge, a large amount of water in the sludge is released, the water content of the sludge is greatly reduced, and the treatment cost of the sludge is reduced.

The invention relates to the field of coal seam gas extraction, in particular to a carbon dioxide fracturing, displacement and gas extraction integrated device and an application method thereof. The device comprises a controller, a fracturing and extraction device body, a gas source tank, a gas booster pump and a gas collecting tank. The fracturing and extraction device body comprises an inner pipe and an outer pipe, the inner pipe is a fracturing pipe, the outer pipe is an extraction pipe, the outer pipe surrounds the circumference of the outer side of the inner pipe, and a carbon dioxide fracturing device is installed at the front end of the inner pipe. And the inner pipe and the outer pipe are respectively connected with a gas source tank and a gas collecting tank through high-pressure hoses. The supercritical carbon dioxide is temporarily prepared in the inner pipe, it is guaranteed that the carbon dioxide is in a supercritical state all the time when cracking a coal seam, and a good cracking effect is achieved; normal-temperature and normal-pressure carbon dioxide is used for displacing gas, the outer pipe is used for gas extraction, the problems of resource waste, gas leakage and the like caused by re-insertion of an extraction device are avoided, the amount of carbon dioxide discharged into air is reduced, and the device is safe, economical, environment-friendly and low in cost.

The application provides a kind of preparation of red radish protoplast enzymatic hydrolysate and the preparation method and application of red radish protoplast, belong to the technical field of plant cytology.The enzymatic hydrolysate includes:1.0~1.5w / v% cellulase, 0.3~0.5w / v% dissociation enzyme and 0.3~0.5w / v% hemicellulase.The cellulase has the effect of degrading cellulose in plant cell wall, dissociation enzyme is used with cellulase, which is beneficial to separate plant tissue into single cell, and the main effect of hemicellulase is to degrade hemicellulose in plant cell wall.The enzymatic hydrolysate can synergistically promote the effect of red radish tissue cell wall lysis through the comprehensive effect of three enzymes, can better and faster destroy cell wall skeleton, is more conducive to the preparation of red radish protoplast and further maximally release protoplast, is conducive to improving the yield of protoplast, and can also keep the protoplast with high activity.

The embodiment of the invention relates to a novel acinetobacter baumannii bacteriophage and application thereof, and belongs to the technical field of microorganisms. The name of the novel acinetobacter baumannii phage provided by the embodiment of the invention is phage HD01, the novel acinetobacter baumannii phage is preserved in Guangdong Microbiological Culture Collection Center on September 23, 2024, the preservation number is GDMCC No: 65174-B1, and the novel acinetobacter baumannii phage is named as Acinetobacter baumannii phage by taxonomy. The bacteriophage HD01 provided by the embodiment of the invention not only can enrich a germplasm resource library of the acinetobacter baumannii bacteriophage, but also can provide a selectable basic material for biological prevention and control of the acinetobacter baumannii; the bacteriophage HD01 has good temperature tolerance and acid and alkali tolerance; in a medical environment in which drug-resistant bacteria generally exist and a common disinfectant is poor in effect, the bacteriophage HD01 is high in safety coefficient and wide in application range when being used for preparing bacteriophage disinfectants or bacteriophage preparations applied to the surfaces of medical apparatuses and instruments, the hospital environment and other environments, and has a good application prospect.

This invention discloses a method for disrupting the cell walls of structurally heterogeneous microorganisms based on the synergistic vibration of multi-size media and its application. The method includes the following steps: (1) constructing a composite cell-dispersing media system with multi-size characteristics and filling it into a cell-dispersing tube; (2) injecting the microbial sample to be disrupted into the cell-dispersing tube and oscillating it at a linear velocity of 6-7 m / s for 30-90 seconds at 4-25 ℃; (3) after cell disruption, separating the mixed composite cell-dispersing media system and the solution to obtain a cell-dispersed solution containing intracellular products. The beneficial effects of this invention are: through the synergistic effect of multi-scale shear forces, it significantly improves the lysis efficiency of difficult-to-disrupt pathogens such as Mycobacterium tuberculosis, Cryptococcus, and Aspergillus, effectively protects the nucleic acid integrity of RNA viruses, has high cell disruption uniformity, good RNA protection, can be standardized and adapted to automated platforms, and is suitable for the pretreatment of complex clinical samples.

The application relates to the walnut processing technical field and discloses a walnut ultrasonic shell breaking and kernel taking device, which comprises a rack, a walnut conveying mechanism arranged on the rack, a walnut shell breaking mechanism and a material collecting mechanism. The walnut conveying mechanism is used for driving the fallen walnuts to move and is conveyed to the walnut shell breaking mechanism. The walnut shell breaking mechanism drives the walnuts to move and extrudes the walnuts to break the shells through ultrasonic high-frequency vibration. The material collecting mechanism is used for screening and collecting the walnut kernels and the walnut shells after the shells are broken. The walnut conveying mechanism, the walnut shell breaking mechanism and the material collecting mechanism realize the processes of walnut conveying, extrusion shell breaking and recovery. The ultrasonic wave is applied to the walnut shell breaking field. The walnut shells in Yunnan are hard and have small kernel-shell gaps. The high-frequency vibration under the mechanical effect of the ultrasonic wave is suitable for the characteristics of hard and brittle material breaking, assists the walnut shell breaking, and improves the shell breaking rate and the whole kernel rate.

The invention provides a mass spectrum sampling method and a mass spectrum sampling device for trace cell lysis, atomization and ionization. Comprising a surface acoustic wave device which comprises a surface acoustic wave chip, a chip clamp, a power amplifier and a signal generator; the surface acoustic wave chip comprises a piezoelectric substrate and an interdigital electrode; the surface acoustic wave chip is clamped on the chip clamp; the signal generator is used for generating a sinusoidal signal of the center frequency of the surface acoustic wave device, the sinusoidal signal is amplified by the power amplifier, and an electric signal amplified by the power amplifier is applied to the interdigital electrode to drive the surface acoustic wave chip to vibrate so as to realize cracking and atomization of trace cells; the nanoliter electric spraying device comprises an electric spraying head, a two-way connecting piece, an adjustable direct-current power supply and a solvent conveying device, the adjustable direct-current power supply applies high voltage to the electric spray head through the two-way connecting piece to generate electric spray; the front of the mass spectrometer and the mass spectrum sample inlet corresponds to the tip of the electric spray head, and the working area of the surface acoustic wave chip is located under the tip of the electric spray head.

The cracking tank provided by the present invention comprises a tank body and a stirring paddle. The tank body is a spherical tank body. At least three supports are connected to the lower part of the tank body. The supports are distributed in a ring shape with a material discharge port as the center, so that the tank body can be stably placed on a supporting surface through the supports. The stirring paddle comprises a stirring shaft and a paddle blade. The stirring shaft comprises a main shaft and a plurality of support shafts arranged on the main shaft at intervals. The support shaft extends in a direction perpendicular to the axis of the main shaft. The paddle blade is arranged at the end of the support shaft. The main shaft penetrates the tank body in a horizontal direction and passes through the spherical center of the tank body. When the stirring paddle rotates, the material is driven by the stirring paddle to move from bottom to top. The material located at the upper part of the tank body moves downward again under the action of gravity, and convectively collides with each other. At the same time, the support shaft also stirs the material. The paddle blade scrapes the material adhered to the inner wall of the tank body, thereby improving the stirring efficiency and achieving a better cracking effect. By arranging a sealing mechanism matching the main shaft on the tank body, the material can be prevented from leaking along the axis of the main shaft.

The utility model provides a circulating heat exchange system for bacterial thermal cracking. The circulating heat exchange system comprises a buffer solution stirring tank, a heat transfer copper coil pipe, a cooling copper coil pipe and a bacterial cracking solution collecting tank which are sequentially communicated through fluid, the heat transfer copper coil pipe is contained in the hot water tank and immersed in hot water, and the hot water tank is connected with a circulating hot water constant temperature system. The cooling copper coil pipe is contained in the cold water tank and immersed in cold water, and the cold water tank is connected with a circulating cold water constant temperature system. Through circulating heat exchange of the hot water tank and the cold water tank, the temperature variation of the hot water tank and the cold water tank can be conveniently reduced, and the cracking effect of resuspended bacterial liquid can be conveniently improved.

The utility model relates to the technical field of automobile brake discs, in particular to an automobile brake disc with central array punching and scribing, which is used for solving the problems that the existing brake disc cannot flow in multiple directions to take away heat, is poor in stress dispersion capability and is easy to deform and damage due to huge friction force and heat when being frequently used, and comprises a brake disc body, the brake disc body is composed of an outer single disc and an inner single disc, a plurality of groups of ribs are arranged between the outer single disc and the inner single disc, a brake center disc is arranged on the outer side wall of the outer single disc, and the brake center disc and the outer single disc are integrally formed in a pouring mode. The air circulation direction is increased, heat can be taken away more quickly, the surface temperature of the brake disc is reduced, meanwhile, a large number of arc-shaped ventilation grooves are formed, the heat dissipation effect can be improved, and meanwhile the stress dispersion capacity of the brake disc is enhanced.

This application discloses a natural gas extraction well pressurization and production enhancement device, belonging to the field of natural gas extraction, comprising: a natural gas pipeline; an electric telescopic rod, the electric telescopic rod being assembled inside the natural gas pipeline; a connecting plate, the connecting plate being assembled at the output end of the electric telescopic rod; an air pump, the air pump being assembled inside the natural gas pipeline; an exhaust pipe, the exhaust pipe being assembled on the side of the air pump; an intake pipe, the intake pipe being assembled on the side of the air pump; and a natural gas extraction pipe, the natural gas extraction pipe being assembled on the top of the air pump. A first sleeve is slidably connected to the side of the natural gas pipeline, and a second sleeve is slidably connected to the inner wall of the first sleeve. By opening the dispersion claw, the coal seam fractures are further expanded, and by starting the air pump, gas can enter the coal seam through the expanded fractures. The returned coal gas is drawn in and discharged through the natural gas extraction pipe, solving the problems of insufficient fracture expansion and low production capacity in traditional pressurized mining.

This invention discloses a method for improving the top coal caving performance and coordinating the control of strong mine pressure in fully mechanized longwall mining faces. The method includes the following steps: determining the treatment stratum, designing the borehole layout, drilling, electrically controlled fracturing, and outputting equipment from the borehole. The electrically controlled fracturing involves installing multiple fracturing devices into at least one fracturing device roller. Each fracturing device roller has an activation chamber. The drilling rig sends the fracturing device roller to a designated position in the borehole. A voltage is then supplied to the activation chamber under the action of a voltage activation device. When the voltage exceeds the rated voltage, the activation chamber operates, activating the fracturing devices. This achieves instantaneous activation of the fracturing devices under controllable voltage conditions. The electrically controlled fracturing method creates a three-dimensional weakened structure in the treatment stratum, disrupting the overall structure of the overlying roof and top coal on the working face, reducing the strength of the rock and coal mass, and integrating the fracturing effect of the top coal itself. This achieves coordinated forced caving of mine pressure and top coal weakening modification.

The present invention provides a Pseudomonas aeruginosa phage and its application. The name of the Pseudomonas aeruginosa phage is phage J3, which has been deposited in the Guangdong Provincial Microbiological Culture Collection Center on May 16, 2024, with a deposit number of GDMCC No: 64627-B1, and a taxonomic name: Pseudomonas aeruginosa phage. Phage J3 can not only enrich the germplasm resource library of Pseudomonas aeruginosa phage, but also provide an optional basic material for the biological control of Pseudomonas aeruginosa. In a medical environment where drug-resistant bacteria are prevalent and common disinfectants are ineffective, phage J3 has a high safety factor and a wide range of applications in the preparation of phage disinfectants or phage preparations for medical device surfaces, hospital environments and other environments, and has good application prospects.

This invention belongs to the field of biological sample detection technology, specifically relating to a lysis cell. This invention provides a lysis cell designed to solve the problem in existing lysis cells where the liquid and reagent cannot be mixed effectively, resulting in poor lysis performance. A lysis cell includes a first flexible wall and a second flexible wall, forming a sealed lysis chamber between the first and second flexible walls. The lysis cell also includes an inlet and an outlet, both of which communicate with the lysis chamber. By using the first and second flexible walls, this invention ensures that the liquid entering the lysis chamber through the inlet mixes evenly with the pre-stored reagents within the lysis chamber. Furthermore, the liquid has a longer flow path within the lysis chamber, resulting in more uniform mixing of the liquid and reagents, thereby optimizing the lysis effect of the lysis cell.

The invention belongs to the technical field of biology, and discloses a nucleic acid treatment reagent, a detection reagent, a detection kit, a microfluidic system, a detection method and application thereof. According to the nucleic acid treatment reagent disclosed by the invention, the hydrolase, the surfactant, the guanidine compound, the surfactin, the phenol red, the oligosaccharide, the sugar alcohol and the magnesium sulfate in a specific mass ratio have a synergistic effect, and genome nucleic acid is fully released; and the kit has a good inhibition effect on PCR inhibitors existing in respiratory tract samples, sputum samples and other samples, and provides an inhibition-resistant buffer system for subsequent qPCR amplification reaction. In actual detection, a mixed solution obtained by mixing the nucleic acid treatment reagent with common samples such as a respiratory tract sample and a sputum sample can be directly subjected to qPCR amplification reaction, so that a complicated sample pretreatment step can be omitted, sample pretreatment and qPCR amplification can be completed within 5 minutes, rapid nucleic acid detection of the samples can be realized, and the detection sensitivity is high. Therefore, the method can be well applied to on-site rapid detection and has a huge application prospect.

This invention discloses a microwave plasma CO2 pyrolysis device and method with product recycling and separation, comprising four parts: a microwave plasma power supply unit, a gas supply and reactor unit, a post-processing and circulation unit, and a signal acquisition and control unit. A solid-state power supply generates microwaves via a magnetron, which, through a waveguide, form microwave plasma within the reactor, pyrolyzing CO2 into CO and O2. A contraction-expansion nozzle creates eddies and a more optimized temperature distribution within the microwave reactor, achieving a higher CO2 conversion rate. A constant-temperature chamber and a carbon bed remove O2 from the products to increase the CO concentration. A pressure swing adsorption device separates and collects the CO, and a vacuum pump circulates the unreacted raw material gas, thus achieving complete CO2 pyrolysis. This invention features novel functional integration, enabling highly efficient CO2 pyrolysis and conversion. It can also be extended to other microwave plasma-based gaseous product conversion processes, facilitating industrial application.

The invention discloses a dual-channel multi-station universal walnut shell breaking machine which comprises a machine frame, an air injection cleaning device, a material storing and feeding device, a dual-channel electric extrusion shell breaking device, a material collecting assembly and a shell breaking machine cover. The double-channel electric extrusion shell breaking device is arranged on the front portion of the upper end face of the rack, the storing and feeding device is arranged in the rear end of the rack and located behind the double-channel electric extrusion shell breaking device, and the air injection cleaning device is arranged at the upper end of the rack and located in front of the double-channel electric extrusion shell breaking device. The material collecting assembly is arranged in the front end of the rack and located under the double-channel electric extrusion shell breaking device, and the shell breaking machine cover is arranged on the front portion of the upper end of the rack and hinged to the middle of the rack through a hinge. Continuous operation of material conveying, feeding clamping, extrusion shell breaking and discharging is achieved, walnuts do not need to be graded before shell breaking, the shell breaking rate is high, reliability is high, faults caused by the fact that shell breaking chippings splash to block a motion structure are avoided, shell and kernel separation after walnut extrusion is accelerated, and machine tool cleanliness, material conveying smoothness and shell breaking reliability are improved.

The invention discloses a static expansion fracturing device and method for hard rocks on a coal mining working face, and the device is characterized in that a pressing and plugging pipe and a fracturing pipe are distributed at an interval and are inserted into a plugging bag in the height direction in a penetrating manner, and a plurality of liquid outlet holes are formed in the part, in an inner cavity of the plugging bag, of the pressing and plugging pipe; the positioning mechanism is fixedly connected to the outer side of the lower portion of the pressing and plugging pipe and acts synchronously with the plugging bag. The buffering protection unit comprises a damping supporting body and a telescopic liquid injection pipe. The damping supporting body has axial telescopic deformation capacity, the fixed end of the damping supporting body is connected with the lower end of the pressing-plugging pipe, and the telescopic end of the damping supporting body is fixedly connected with a baffle. The upper end of the telescopic liquid injection pipe is connected with the lower end of the fracturing pipe, and the lower end of the telescopic liquid injection pipe is fixedly inserted into the mounting hole in the baffle. The method comprises the following steps: constructing a drill hole and filling the fracturing capsule; a fracturing device is installed, high-pressure gas or high-pressure liquid is injected through a pressing and plugging pipe, and opening of sealing, positioning and protection states is achieved; and high-pressure water is injected through the fracturing pipe for static fracturing operation. The fracturing effect and the fracturing efficiency can be remarkably improved.

The invention relates to the field of tunnel construction, in particular to a tunnel impact milling excavator. The excavator comprises an excavator body, an excavating arm mechanism, a turnover device, an impact milling and excavating device and an excavator bucket arranged at the tail end of the excavating arm mechanism. The turnover device comprises a turnover seat arranged on the excavator main body, a rotating shaft which is rotationally arranged on the turnover seat and is connected with the digging arm mechanism, and a rotary driving device which is arranged on the turnover seat and is in driving connection with the rotating shaft; the impact milling and digging device comprises an impact milling and digging mechanism, a telescopic rotating arm of which the two ends are rotationally connected with the impact milling and digging mechanism and the digging arm mechanism respectively, a rotating power device a which is arranged at one end of the telescopic rotating arm and is in transmission connection with the digging arm mechanism, and a rotating power device b which is arranged at the other end of the telescopic rotating arm and is in transmission connection with the impact milling and digging mechanism; and an oil cylinder for adjusting the length is arranged in the telescopic rotating arm. Rock can be drilled firstly, then impacted and fractured, and finally shoveled out through the excavator bucket.