55results about How to "Improve recovery speed" patented technology

Provided are a functional porous film having a plurality of functions, a method of manufacturing the same, and a sensor using the same. In the functional porous film, a functional portion having a different function from a porous body is disposed on the inner wall of a pore of the porous body. The functional porous film is formed through forming a precursor film including a pore-forming powder such as an organic powder on which a material powder of the functional portion is deposited and a material powder of the porous body, and then heating the precursor film to remove the pore-forming powder and sinter the material powder of the porous body.

The invention discloses a fuzzy image integrated processing method and system. The fuzzy image integrated processing method includes the steps: S10, according to the extension degree of a fuzzy imagespectrogram, identifying the fuzzy type of a fuzzy image, wherein the fuzzy type includes defocus fuzzy and motion fuzzy; S20, if the fuzzy image is defocus fuzzy, estimating the fuzzy kernel througha knife-edge method, and if the fuzzy image is motion fuzzy, adaptively presetting an algorithm to estimate the fuzzy kernel; and S30, based on the fuzzy kernel, by means of a hyper-Laplace prior deconvolution algorithm to obtain a clear image. The fuzzy image integrated processing method and system can distinguish according to difference of the fuzzy type of the fuzzy image, according to the degradation mechanism of different fuzzy type, can set a corresponding fuzzy kernel estimation algorithm so as to estimate a fuzzy kernel which is more realistic, and can perform accurate fuzzy kernel estimation based on a Gaussian model, specifically in allusion to the defocus fuzzy image. The fuzzy image integrated processing method and system have the advantages of being suitable for restoration ofmore real fuzzy images, being simple in the restoration method, being high in pertinency, being accurate and quick in restoration, and being high in quality of restoration.

The invention provides a gas control method for a large-mining-height working face of a high gas coal seam, and belongs to the technical field of safety of mines. The gas control method comprises the steps of arranging a first bed extraction tunnel during excavating at the working face; upwards arranging a crossing hole through the first bed extraction tunnel to pre-extract gas; arranging and cutting holes in the bed extraction tunnel to pre-extract gas; arranging an inclined connection roadway to form a ventilation circuit; arranging a second bed extraction tunnel and a connection roadway; pre-extracting gas through the crossing hole which is upwards arranged through the first bed extraction tunnel; arranging a high extraction tunnel to reach a gob caving slit band; arranging the crossing hole in the high extraction tunnel; pumping gas at the high extraction tunnel. According to the gas control method for the large-mining-height working face of the high gas coal seam, gas pumping drilling holes are arranged in each tunnel, a gas treatment scheme under the combination of the bed extraction tunnel, the high extraction tunnel and the current coal seam extraction is created, and therefore, the gas emission rate in the excavating and recovery periods at the working face can be effectively reduced, the continuing speed of recovery at the working face is raised, the gas accumulated at the working face and upper corners and ultralimit of gas can be effectively avoided, and as a result, the safety in production at the working face can be ensured.

The invention discloses a gas control method of an outburst coal seam. Three low-level gas suction tunnels, three coal roads and one mining face upper corner high suction tunnel are distributed on an outburst dangerous working surface to form a one-face and multi-tunnel region gas comprehensive control layout. Rapid tunneling of the coal roads is shielded by the pre-pumped coal road strip coal body gas of the crossing holes of the low-level gas suction tunnels and the coal seam gas of a backstoping region is pre-pumped back by drilled boreholes down the seam of the current coal seams of the three coal roads; coal seam stress is released and the gas of an upper corner and a goaf is pumped by the mining face upper corner high suction tunnel, so that the safe and efficient production of a mine shaft is realized. With the adoption of a management method, a partial outburst prevention measure is cancelled and a tensioned takeover layout is alleviated; the tunneling speed of the coal roads and the backstoping speed of a working surface are improved and the safe foundations of coal and gas outburst mine shafts are enhanced; powerful technical guarantees are provided for the safe and efficient production of the mine shafts.

The invention mainly provides a ratchet wheel of a wheel hub of a bicycle. The ratchet wheel is arranged between a first wheel hub base and a sleeve base and comprises a blocking ring which is arranged inside the wheel bub base fixedly, a driven base, a conical surface, a blocking portion and a magnetic group; wherein an inclined cone inner hole and a blocking edge are arranged on the blocking ring, a driving base is arranged between the wheel hub base and the sleeve base, and a plurality of first ratchet teeth are arranged on a one side end face of the driving base, which faces towards an axial ring inside the wheel hub base; the driven base is arranged inside the inclined cone inner hole and corresponds to a driving group, the external diameter of the conical surface can be matched with the inclined cone inner hole, the blocking portion can be blocked by the blocking edge in one direction, a driven base ring is provided with a plurality of second ratchet teeth which can be meshed with the first ratchet teeth, and the magnetic group is arranged between the driven base and the wheel hub base and provided with a first magnetic part and a second magnetic part, which are respectively arranged inside the wheel hub base and on the driven base and are in a mutual exclusion state. Thus, the inclined cone inner hole which is in an inclined cone shape and the conical surface design are adopted, the friction force is reduced, the restoring speed of the driven base is increased, and the sensitivity of a ratchet wheel group is improved further.

The embodiment of the invention discloses an annular arrangement route mining method which is suitable for medium-thick ore bodies and above. The construction steps are as follows: three stope main connecting roadways are constructed in a delineated ore body, a first-step route is constructed to a left stope connecting roadway and a right stope connecting roadway along the position of the stope main connecting roadways parallel to the trend of the ore body, and a second-step route is constructed to the stope main connecting roadways along the boundaries of a left stope and a right stope; the first-step route is provided with a special cemented filling drainage well, the second-step route is provided with a reserved special ventilation well, and a graded tailings filling process is adopted;the route mining sequence, filling, ventilation and other processes of an upper section and a lower section are exchanged, the workload of stope preparation is reduced until stope coal extraction isfinished, alternate roof-contact filling upward mining of the first-step route and the second-step route of the stope is carried out, and the undercutting work quantity is reduced; and graded tailingsfilling and cemented filling are constructed alternately, and the advantages that the filling cost is reduced, the labor efficiency is high, the stope preparation work amount is relatively small, thestrength of a filling body is high, and the ventilation effect is good are achieved.

The invention discloses a preparation method of a mesoporous SnO2 material. The preparation method comprises the following steps of dissolving 3.1g of CTAB (Cetyl Trimethyl Ammonium Bromide) into 40mL of water to obtain a surfactant solution; adding 0.11g of dodecylamine into the surfactant solution; adding a prepared ammonia water solution into a mixed solution to obtain a template agent solution; dissolving 10.5g of SnCl4.5H2O into 80mL of water and adding the prepared solution into the template agent solution to obtain a white slurry-like solution; performing reaction on the white slurry-like solution at the temperature of 160 DEG C for 12h, roasting the treated white slurry-like solution in air atmosphere, and preserving heat for 1h to prepare the mesoporous SnO2 material. The invention further discloses a high-sensitivity alcohol-sensitive gas sensor and a preparation method thereof. Impurities and structural defects caused by after-treatment such as high-temperature calcination or ball milling can be avoided, high-temperature roasting crystallization is not needed, and hard powder agglomeration which is difficult to avoid in the high-temperature roasting process is reduced.

The invention discloses a relay unit improvement of an electrostatic pull-in device power supply, which is characterized by adopting IC base inserting mode at the welding position of the original relay (K1); substituting the original relay (K1) to a modular designed single PCB plate with relay function, wherein, the PCB plate is welded with row-shaped needle seats, RC filter circuit and a relay (K3) with strong current capacity, the input and output pins of the original relay (K1) and the input and output pins of the relay (K3) are mapped to the probes on the row-shaped needle seats for corresponding welding. Adoption of the inventive relay unit improvement method can effectively eliminate the arc discharge phenomenon and filter the vast majority of high-frequency signals to resolve the return coupling voltage problem of the machine after the ESC, and to extend the life of the relay; and increase the rotating restoration velocity of the machine; simultaneously reduce the integral condemnation factor of the ESC supply unit.

The invention relates to the technical field of mining of metal and non-metal ores, in particular to a flat bottom structure sublevel rock drilling stage ore removal subsequent cut-and-filling stopingmethod. The method is suitable for stoping sharply inclined and inclined ore bodies. According to the method, the mining method is suitable for mining thick ore bodies, extremely thick ore bodies, and the sharply inclined and inclined metal and non-metal ore bodies, wherein the sharply inclined and inclined metal and non-metal ore bodies are characterized in that the friction forces of the contact surfaces between the footwall boundaries of the ore bodies and bottom plate surrounding rocks are small, the ore fluidity is good, and the movement angles of ore footwalls are 30 degrees or above; sublevel open stope mining and mined-out area subsequently-filling are achieved, the mining high efficiency of a caving method is achieved, and the safety of a filling method is achieved; and the mining environment is safe, the mined-out area is treated through utilizing the filling method, the ore recovery rate is improved, and the ore dilution rate is reduced.

The invention discloses a method for intercropping high-fall-dormancy-grade medicago sativa in hybrid pennisetum urpureum in south regions, and relates to the technical field of pasture cultivation and utilization. The method comprises the following steps: performing deep ploughing on an intercropping land, applying a sufficient base fertilizer, performing vegetative propagation on seed stems of 'Guimu No.1' hybrid pennisetum urpureum, and performing hole sowing; performing strip cropping on a variety of medicago sativa of which the fall-dormancy grade is higher than 6; applying a nitrogenous fertilizer for three times a year at the beginning of March, the beginning of June and the end of August after the grass is cut; performing intertillage weeding once from the beginning of July to the beginning of September while the medicago sativa grows slowly. The intercropping grass can be cut for 7-9 times a year, so that the content of protein in the mixed feed grass can be relatively high, the total amount of digestible nutrients in the mixed feed grass can be increased, and the method is suitable for providing green feed which is relatively high in nutrient value to middle/small-scale livestock farms in the south regions. The method can both meet manual harvesting operation in a small-scale livestock farm, and is applicable to small-size mechanical operation of southern slope croplands.

The invention discloses an oblique ore body upward incision trough broaching detonation method. During upward incision construction, upward incision is conducted two times; a shallow hole drill jambo is used for utilizing the oblique cut for conducting drilling and blasting tunneling on the accurate mining high upper, the compensation space and the free face of secondary blasting are increased, and the oblique length of the upward incision is reduced; and then a medium-deep hole drill jambo is used for utilizing the cylinder cut to conduct one-time throughout detonation on cutting. By means of the oblique ore body upward incision trough broaching detonation method, the oblique ore body upward incision can form the upward incision through one-time shallow hole drilling and blasting and one-time medium-deep hole drilling and blasting, safety risks in the multi-time shallow hole trough broaching operation process of a traditional method are effectively reduced, the problem that in the oblique ore body trough broaching process, a trolley, an excavator and other devices cannot directly work on net anchoring, rock drilling and scraping operation without bottom rising due to the large ore body gradient is solved, and the purposes of increasing the mining speed, improving the ore quality and reducing the safety risks are achieved.

The invention discloses a hydraulic tensioner resetting device capable of preventing jamming deformation and an implementation method thereof. The hydraulic tensioner resetting device comprises a fixing seat, a connecting seat is fixed to one side of the outer wall of the top of the fixing seat, a rectangular groove is formed in the outer wall of one side of the connecting seat, and a threaded rod is rotationally connected between the inner walls of the two opposite sides of the rectangular groove through a bearing; and the outer wall of the threaded rod is in threaded connection with a threaded block, the threaded block is in sliding connection with the rectangular groove, a reset plate is fixed to the outer wall of one side of the threaded block, a supporting seat is fixed to one side of the outer wall of the top of the fixing seat, a supporting groove is formed in the outer wall of the top of the supporting seat, and a clamping mechanism is arranged in the supporting groove. According to the hydraulic tensioner resetting device, the situation that a hydraulic tensioner falls down due to the fact that the pressurizing force is large when the hydraulic tensioner is reset, and accordingly resetting of the hydraulic tensioner is affected is prevented, the situation that due to jamming, the hydraulic tensioner is damaged due to the fact that the pressurizing force is large when the hydraulic tensioner is pressurized is prevented, and the resetting speed of the hydraulic tensioner is increased conveniently.

The invention relates to a coal seam outburst elimination method, in particular to an outburst elimination method for an outburst coal seam based on controllable shock wave permeability improvement. The outburst elimination method for the outburst coal seam based on controllable shock wave permeability improvement aims at solving the technical problems that in an existing outburst elimination technology for underground bedding drilling of the outburst coal seam, the use cost is high, the suction effect is poor, and hole collapse is prone to happening. The method comprises the following steps of 1), drilling an permeability improvement drill hole for shield tunneling; 2), performing shock wave anti-reflection operation and gas extraction on the permeability improvement drill hole for shield tunneling; 3), tunneling a roadway; 4), drilling, permeability increasing and tunneling. specifically, 411), drilling a plurality of permeability improvement drill holes for outburst elimination in a plurality of areas, and performing shock wave permeability improvement operation and gas extraction; 421), drilling the permeability improvement drill hole for shield tunneling; and 431), tunneling the roadway again; 5), repeating until tunneling to a preset open-off cut position; and 6), tunneling the preset open-off cut and the preset roadway on the other side, and stoping the coal face.

The invention relates to the technical field of coal mine gas extraction, and discloses a method for extracting top coal gas during a fully-mechanized top coal caving period of an extra-thick coal seam. The method comprises the following steps of (1) designing bedding directional long drilling parameters: designing the bedding directional long drilling parameters according to coal seam occurrence conditions and firmness coefficients; (2) conducting directional drilling construction, specifically, conducting bedding directional long drilling on the coal seam before working face stoping, connecting a pipeline to a hole opening, and the pipeline is connected with negative pressure extraction equipment; (3) crushing the top coal: repeatedly supporting and extruding the top coal by a bracket of a stope face to generate cracks in the coal seam, and continuously desorbing the gas in the coal seam; and (4) conducting top coal caving: during the top coal caving period, a large amount of gas rushes to the top of the working face and is continuously pumped out through a drill hole. The method solves the problem that a large amount of desorbable gas generated in the coal caving period cannot be effectively extracted in time through a coal seam roof high-position drilling hole or a high drainage roadway, the desorbable gas instantly flows into the working face, so that the gas of an upper corner or a return airway exceeds the limit.

The invention relates to network equipment, in particular to emergency connection equipment for standby parts and wiring terminals of a network converter. The technical problem of the invention is to provide the emergency connection equipment for the standby part and the wiring terminal of the network converter, which can quickly replace a network switch, synchronously plug and unplug a network cable and a power line of the network wiring terminal and has high automation degree. According to the technical scheme, the emergency connection equipment for the standby part and the wiring terminal of the network converter comprises a panel layer, wherein the panel layer is of a structure with openings formed in the two sides, a supporting frame is arranged on one side of the panel layer, and two sets of movable plate doors are arranged on one side of the panel layer. According to the invention, the pushing device is adopted to drive the clamping frame on the wiring device to move, so that the network wiring terminals and the power lines can be synchronously plugged and unplugged, all connected network wiring terminals and power lines can be quickly connected and unplugged at a time, and thereby, the network re-connection speed is improved.