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

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 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 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.