52results about How to "Reduce plugging rate" patented technology

A ground reinforce procedure includes the steps of: A. low position vacuum self-loading pre-press; B. vacuum well point precipitation; C. vacuum electroosmosis precipitation and complex stuffing paving simultaneously; D. low power strong tamp; E. vibrate rolling; F. smoothing.

The invention belongs to the technical field of separation membranes and relates to a columnar hollow fiber membrane module manufacturing method and a columnar hollow fiber membrane module manufacturing device. The method includes steps: manufacturing of U-shaped membrane filament bundles, to be more specific, winding hollow fiber membrane filaments to form the U-shaped membrane filament bundles in required length, wherein the head of one end of each U-shaped membrane filament bundle is bent; glue injection, to be more specific, subjecting the U-shaped membrane filament bundles to single-end (the other ends of the bent heads) glue injection to form independent pouring unit bundles; assembly, to be more specific, fixing the pouring unit bundles into membrane shells (pressure type membrane modules) or membrane frames (immersed modules); glue feeding and pouring, to be more specific, directly mounting glue injection end caps at the U-shaped ends of the bent heads of the pouring unit bundles to perform glue feeding and pouring; solidifying and cutting, to be more specific, after glue solidification, cutting glue surfaces to perforate membrane filaments, so that membrane module manufacturing is finished. The columnar hollow fiber membrane module manufacturing method and the columnar hollow fiber membrane module manufacturing device have advantages that hollow fiber membrane filament utilization rate and membrane module pouring and end sealing quality in a columnar hollow fiber membrane module manufacturing process are increased, and membrane filament blockage rate is decreased; work intensity is relieved, and efficiency improvement, cost saving, simplicity and convenience are achieved.

The invention provides a porous membrane and a lithium ion battery. The porous membrane provided by the invention has excellent cohesiveness, and the pore structure of the porous membrane can be wellmaintained after being soaked in an electrolyte, so that the probability of pore blockage of the porous membrane is reduced, the lithium ion battery has high ion conductivity, the dynamic performanceof the lithium ion battery is greatly improved, and the provided lithium ion battery has the excellent rate capability and cycle performance.

The invention discloses a honeycombed catalyst and a preparation method and application thereof. The preparation method includes the step of applying SCR (selective catalytic reduction) catalyst slurry to honeycombed ceramics after electromagnetic shock dispersion. With the method, the honeycombed catalyst with high uploading rate, low expulsion rate and low blocking rate is obtained.

Anti-seepage and reinforcing paste slurry capable of resisting water flow erosion comprises a clay powder, cement and water, and also comprises a thickening agent, a weight-increasing agent and a tackifier, wherein the thickening agent is water-absorbing resin; the weight-increasing agent is a mixture of at least one of barite powder and iron ore powder and steel sand; the tackifier is vegetable gelatin. The paste slurry has low initial consistence and large specific gravity, avoids separation and layering, has high viscosity and high flowing water erosion resistance, is simple and convenientto slurry, low in cost and easy to operate, and has a wide market prospect.

The invention provides a gravel production process capable of suppressing dust and preventing sand flying under a strong wind condition. The gravel production process comprises the following steps of: performing primary crushing, performing primary screening after crushing, enabling small stone materials to enter a mixing bin, and enabling large stone materials to enter secondary crushing; conveying the materials subjected to secondary crushing to a high-frequency screen by using a sealing-tape machine, spraying at an outlet of the sealing-tape machine by using a high-pressure spraying pipe, conveying the stone materials on the screen surface to the mixing bin to be mixed with the small stone materials, and enabling screened slurry to enter a spiral classifier to recover gravel; and enabling the mixed stone materials to enter a sand making crusher to be crushed, washing out stone powder by washing sand after crushing, and finally enabling the crushed stone materials to enter a sand bin. By adopting the gravel production process, the generation of flying dust is effectively prevented, the hole blocking probability is greatly reduced, the screening effect and the gravel quality are guaranteed, and energy is saved. By mixing the stone materials, the water content of the feeding materials of the sand making crusher is lower than 2 percent, the cavity blocking of the crusher is prevented, the production efficiency is guaranteed, and the potential safety hazard is reduced.

The invention discloses a stope debris flow treatment method in a caving mining method and a device of the method. In a stope ore discharge opening position of the caving mining method, before the stope ore discharge, an impact device is used for beating a water filtering steel pipe into a caving ore pile with the debris flow harm; water filter holes are uniformly distributed in the insertion front end of the water filtering steel pipe; the tail end of the water filtering steel pipe is connected with the suck-in end of a slurry pump through a rigid flange; the slurry pump is started; the blockage of the water filtering pipeline by debris flow slurry in the ore pile is eliminated through the negative pressure influence and the vibration effect exerted on the water filtering pipeline by the slurry pump; slurry and water in the ore pile is discharged as fast as possible; then, the impact device is continuously used for beating the water filtering steel pipe into a deeper position, with the debris flow damage, of the ore pile; slurry is discharged by the slurry pump; the operation is circulated in such a way until the slurry quantity in the stope ore pile is greatly reduced; the stope debris flow damage is eliminated. The method has the advantages that the operation is simple and convenient; the pipe blockage probability by mud and stones is low; the water discharge and mud discharge speed is high; the stope debris flow treatment effect is good; the water filtering steel pipe can be cyclically used, and the like.

The invention discloses a deep hole blasting filling method. The deep hole blasting filling method includes the steps that the bottom of a blast hole is filled and blocked with cement, and meanwhile the bottom resistance line is reserved; a pre-designed amount of first explosive is loaded to the bottom of the blast hole, and meanwhile a first double-detonator and detonating cord igniting explosive package and a first detonator are loaded into the blast hole along with the first explosive; the position on the top of the first explosive is filled with an appropriate amount of river sand; a pre-designed amount of second explosive is continuously loaded to the top of the river sand, and meanwhile a second double-detonator and detonating cord igniting explosive package and a second detonator are loaded into the blast hole along with the second explosive; after all the explosive is loaded into the blast hole, the top of the second explosive is filled with fine river sand, and then two water bags are hoisted into the blast hole and press on the top of the fine river sand. The deep hole blasting filling method solves the problems that according to an original filling scheme, the number of plug holes is large and a large amount of dust is generated.

The invention discloses an extra-deep downward concrete pumping system which is used for pumping concrete from a high terrace to a lower terrace. The extra-deep downward concrete pumping system comprises a conveying pump, a pylon and a pump pipe, wherein the conveying pump is fixedly arranged on the high terrace; the bottom of the pylon is fixedly supported on a bearing platform positioned at the lower terrace; the top of the pylon is respectively fastened on a pair of concrete piers positioned at the high terrace through a pair of tower crane attached legs; the pump pipe is erected on the pylon; and the input end of the pump pipe is connected with a pump mouth of the conveying pump. Due to the adoption of the extra-deep downward concrete pumping system disclosed by the invention, the system for conveying the concrete downward to an extra-deep area is realized; and the extra-deep downward concrete pumping system has the advantages of high conveying efficiency, stability and safety for conveying, low possibility of blocking the pipe and easy overhaul.

The invention provides a Thermoactinomyces-vulgaris-containing desilting agent which comprises a biocatalyst, a nonionic surfactant, an aloe extracting solution, a purslane extracting solution, a Herba Centellae extracting solution, a bioenzyme activator, borax, shikimic acid, humic acid, a vitamin complex, a substrate, a porous sodium-type activated zeolite powder carrier, halophile, Thermoactinomyces vulgaris and a crosslinking agent. The invention also provides application of the Thermoactinomyces-vulgaris-containing desilting agent in salt drainage concealed pipes. The desilting agent lowers the salt content of water in the salt drainage concealed pipe, and the salt content of water at the outlet of the salt drainage concealed pipe is lowered to 0.49-0.61%. The desilting agent lowers the plugged hole percentage of the salt drainage concealed pipe, and the plugged hole percentage of water in the salt drainage concealed pipe is lowered to 11-12%. The desilting agent enhances the saline-alkali soil silt treatment speed, and the time for treating 8cm-thick saline-alkali soil silt is 6-7.0 days. The desilting agent has favorable desilting effect; and one year after desilting, the water transparency is up to 10-12cm, whereas the transparency of the control group is 5cm.

The invention provides a vibrating screen sieve plate and a cleaning device of the vibrating screen sieve plate. The cleaning device comprises a rapper bar which is of a columnar hollow structure, a plurality of protruding bosses for striking a grating of the sieve plate, a plurality of blowholes and an installing component are arranged on the surface of the rapper bar, wherein the installing component is used for making the rapper bar installed below the grating of the sieve plate. Due to the fact that the rapper bar is arranged below the grating of a vibrating screen and continuously raps the grating, high-pressure gas continuously blows the grating, the vibration amplitude of the grating can be increased, materials easily stuck to the grating can be vibrated and scattered or blown away, and it can be guaranteed that holes are not blocked. Thus, the vibrating screen sieve plate and the cleaning device can reduce the hole blockage probability of materials and improve screening efficiency.

The invention belongs to the technical field of separation membranes and relates to a columnar hollow fiber membrane module manufacturing method and a columnar hollow fiber membrane module manufacturing device. The method includes steps: manufacturing of U-shaped membrane filament bundles, to be more specific, winding hollow fiber membrane filaments to form the U-shaped membrane filament bundles in required length, wherein the head of one end of each U-shaped membrane filament bundle is bent; glue injection, to be more specific, subjecting the U-shaped membrane filament bundles to single-end (the other ends of the bent heads) glue injection to form independent pouring unit bundles; assembly, to be more specific, fixing the pouring unit bundles into membrane shells (pressure type membrane modules) or membrane frames (immersed modules); glue feeding and pouring, to be more specific, directly mounting glue injection end caps at the U-shaped ends of the bent heads of the pouring unit bundles to perform glue feeding and pouring; solidifying and cutting, to be more specific, after glue solidification, cutting glue surfaces to perforate membrane filaments, so that membrane module manufacturing is finished. The columnar hollow fiber membrane module manufacturing method and the columnar hollow fiber membrane module manufacturing device have advantages that hollow fiber membrane filament utilization rate and membrane module pouring and end sealing quality in a columnar hollow fiber membrane module manufacturing process are increased, and membrane filament blockage rate is decreased; work intensity is relieved, and efficiency improvement, cost saving, simplicity and convenience are achieved.

The invention relates to a biomedical material in the fields of medicine and medical instruments, in particular relates to an anticoagulation implant material, and in particular relates to a polyvinylalcohol-heparin polymer as well as a preparation method and application thereof. The polyvinyl alcohol-heparin polymer is formed by connecting polyvinyl alcohol and heparin through ionic bonds formedbetween the polyvinyl alcohol and the heparin, the polyvinyl alcohol is quaternary ammonium salt-modified cationic polyvinyl alcohol, and the modification conditions of the cationic polyvinyl alcoholare as follows: pH is 11.0-12.5, temperature is 50-55 DEG C, and reaction time is 4 h. The polyvinyl alcohol-heparin polymer provided by the present application can be used to process a soft and elastic indwelling hose, and the indwelling hose has excellent mechanical properties, anticoagulation properties and biocompatibility, and can effectively reduce the probability of blocking the hose and blood vessels and effectively reduce damage to human bodies, thereby effectively reducing suffering of patients.

The invention discloses a classification auger for impurity removal of construction wastes and complete construction waste processing equipment. The classification auger comprises a screen drum, a spiral feed mechanism mounted in the screen drum, and a rinsing bath for rinsing construction wastes to be processed before the construction wastes are fed to the screen drum, wherein the screen drum includes an inlet end at one end and a discharge end at the other end; the inlet end is positioned in the rinsing bath; a motor drive mechanism for driving the spiral feed mechanism to rotate continuously is arranged on the outer side of the discharge end; the spiral feed mechanism and the screen drum are arranged coaxially. The complete construction waste processing equipment comprises a rotary screen with an inlet on the front side, a vibrating screen below the rotary screen, and the classification auger for rinsing an oversize material on the vibrating screen to remove impurities, wherein the screen drum is arranged slantwise; the rinsing bath is positioned below the vibrating screen. The classification auger and the complete construction waste processing equipment provided by the invention have the advantages of simple structure, reasonable design, convenience in installation and arrangement, simplicity in use and operation, and good use effect, and can solve the problems, such as single function, high mechanical failure rate and poor use effect, of the conventional construction waste processing equipment.

The invention provides a composite material silencing and noise-reducing acoustic liner and a preparation method thereof, belongs to the technical field of structural / functional integrated composite material molding, and mainly relates to a composite material microporous panel honeycomb sandwich structure silencing and noise-reducing acoustic liner assembly, a molding process method and applications thereof, specifically to layer spreading of aramid fiber and glass fiber reinforced epoxy resin-based composite prepreg, application of a polymer acoustic separation membrane material, and hot press tank curing molding. According to the present invention, a large number of micro-pores are processed on the composite material layer plate through the laser processing method; and the Nomex aramid paper honeycomb core, the composite material panel and the back plate are adhered and cured by the film-like adhesive to form the micro perforated plate composite material silencing and noise-reducingacoustic liner, wherein the silencing and noise-reducing acoustic liner can be the single-freedom-degree acoustic liner structure and the multi-freedom-degree acoustic liner structure, and can achievethe acoustic noise reduction function of aero engines.

The invention discloses a cerebrospinal fluid quantitative shunt system and a shunt method. The system comprises a cerebrospinal fluid shunt valve, a liquid inlet pipe from the brain ventricle or the lumbar cistern to the cerebrospinal fluid shunt valve, a liquid outlet pipe from the cerebrospinal fluid shunt valve to the abdominal cavity, and a body surface control The device; the cerebrospinal fluid shunt valve includes a cavity and a magnetic induction valve, the cavity is divided into two chambers by a piston, and the two sides of the cavity are connected with the liquid inlet pipe and the liquid outlet pipe through the magnetic induction valve; the piston moves horizontally in the cavity under the hydraulic pressure difference ; The electromagnetic field controls the rotation angle of the magnetic induction valve in different phases, and then switches the connection between the liquid inlet pipe and the liquid outlet pipe. The external induction control card obtains the time from the opening time point to the filling time point of the chamber connected to the liquid inlet pipe, calculates the time required for a quantitative shunt, and obtains the shunt speed, thereby calibrating the upstream and downstream hydraulic pressure difference of the chamber. The invention judges whether the pressure of the ventricular system of the patient is in the normal range by calculating the pressure value of the patient's ventricular system, and avoids the occurrence of siphon, excessive shunt and cerebrospinal fluid backflow.

The invention discloses a control method and device for stope mud-rock flow in caving mining method. At the position of the ore outlet of the caving stope, before the stope is out of the mine, the impactor is used to drive the water filter steel pipe into the caving ore heap that is endangered by debris flow to be out of the mine, and the front end of the water filter steel pipe is evenly distributed with filter holes. The tail end of the water filter steel pipe is connected with the suction end of the mud pump through a rigid flange, the mud pump is started, and the vibration and negative pressure applied to the water filter pipe by the mud pump are used to eliminate the blockage of the debris flow slurry in the mine heap to the water filter pipe , discharge the mud and water in the ore heap as soon as possible, and then continue to use the impactor to drive the water filter steel pipe into the deeper position of the ore heap with debris flow hazards, and use the mud pump to discharge the muddy water, and so on, until the amount of muddy water in the stope ore heap It is greatly reduced, and the hazard of debris flow in the stope is eliminated. The invention has the advantages of simple operation, low probability of mud-rock blockage, fast drainage and mud-discharging speed, good control effect of stope mud-rock flow, recyclable water filter steel pipe, and the like.

The invention discloses attapulgite clay slurry for lithium ion batteries. The slurry is applied to coating of ceramic diaphragms of the lithium ion batteries. The attapulgite clay slurry consists of 40-60wt% of attapulgite clay, 0.1-5wt% of a water-based adhesive, 0.1-2wt% of a water-based dispersant and the balance being water. The slurry disclosed by the invention is stable in viscosity and not easy to settle; the attapulgite clay slurry is infiltrative for polymer diaphragms of the lithium ion batteries prepared by adopting a dry process and a wet process, and is significant in cost advantage compared with universal aluminum oxide, zirconium oxide or colloid ceramic diaphragm slurry.