Emulsified explosive filling equipment of double cumulative energy channel pipe

The invention discloses an emulsified explosive filling equipment of a double cumulative energy channel pipe, comprising a stand; the stand is provided with a supporting frame which is provided with an explosive tank pressurizing system; one side of the supporting frame is provided with an electric control system; the central position of the inner side of the supporting frame is provided with an explosive storing room; the upper end of the explosive storing room is connected with the explosive tank pressurizing system, and the lower end thereof is connected with an explosive feeding system; the front part of the explosive feeding system is provided with an explosive outlet system; the front end of the explosive outlet system is provided with an explosive outlet pipe; the explosive feeding system is internally provided with a screw propulsion shaft; the explosive tank pressurizing system comprises a turbine scroll bar lifting machine and a screw rod; the lower end of the screw rod is connected ...

Construction method of energy cumulative presplitting and smoothsurface blasting and special device thereof

Method for induding andrographolide by cyclodextrin and medicinal preparation

The present invention discloses a method for including andrographolide by using cyclodextrin and its medicinal preparation. The andrographolide is an importent active extract of medicinal plant andrographis. Its inclusion method includes: adding 10-60g of cyclodextrin or its derivative into distilled water and dissolving it; adding 6g of andrographolide extract into 5-10 ml of medicinal methyl alcohol, heating and dissolving it; pouring the cyclodextrin aqueous solution into andrographolide ethyl alcohol solution; ultrasonic vibrating mixed solution in ultrasonic generator for 20-30 min., adopting thin-layer chromatography to identify the cyclodextrin-andrographolide inclusion quality. It does not change chemical property and effective activity of the andrographolide, can be prepared intovarious dosage forms.

Permanent magnetic composite uniphase step motor

The step motor includes stator, rotor, back-run preventing ratchet mechanism, front end cap, back end cap and other parts. The stator permanent magnet pole has winding and the rotor salient pole has a raise hawk nosed structure. The step motor may be driven by a monopolar pulse power supply to provide large output moment, and has excellent high frequency and low frequency performance, that is, the ability of maintaining stable unidirectional rotation even being driven by high frequency or low frequency pulse signal.

Method of energy cumulative presplitting and smoothsurface blasting and special device therof

It is a special-purpose device used for two-directional energy-focusing and smooth blasting, post standard knot of multisection energy-gathering pipe which is in the double ''V'' shaped energy-accumulating groove which is set on the pipewall full of detonator, each post standard knot is linked with connection casing on which there is energy-accumulating groove, centering ring in the hole is noosed on the standard joint of the binding energy tube so that the center lines of the upper and the lower energy-gathering groove like V shape are in the same surface in the blasthole. Orifice centering rings of the two V- shaped central whose orientation is the same with V- shaped energy-gathering groove are set on the noose annulus wall at the ground end of energy -gathering pipe at orifice of blasthole, which makes the center line of each energy-gathering groove like a V shape forms a surface of centering and coinciding with blasting surface in each blasthole and among. After detonating explosive ...

Electromechanical single-phase stepped motor

The stepped motor includes one stator in through hole structure; one rotor inside the throug hole and with iron core casing the shaft; cam fixed onto the shaft; and one lifting lever spring mechanism. The cam is connected to the roller end of the lifting lever spring, and the latter has the other end fixed on the stator. The present invention has the advantages of simple structure, convenient control, small volume, great output moment, high step length accuracy, strong environment suitability, etc.

Electromechanical sighle-phase stepped motor

Permanent magnetic composite uniphase step motor