34results about How to "Improve jet quality" patented technology

The invention relates to a mining method for jetting concrete in a wet type; a method comprises the following steps: preparing cement slurry; stirring gravel mixing material; starting air source to input high pressure air to a gravel mixing material transport pipeline in a jetting procedure; and inputting the cement slurry to a cement slurry transport pipeline through transport equipment; after jetting the cement slurry by a nozzle, adding the gravel mixing material to a jetting machine; under the action of the high pressure air, mixing and stirring the cement slurry and the gravel mixing material; finally, jetting the concrete from the nozzle. According to the invention, the method depends on current jetting equipment; a transport distance (larger than or equal to 60m) of jet concrete is can be increased greatly on a condition of ensuring invariable wet-type concrete jetting advantages; simultaneously, the method effectively avoids problems that large-scale stirring is used hardly and concrete transport equipment is limited under a coal well; production efficiency and jetting quality are improved greatly; in addition, powder dust concentration near the jetting machine is less than or equal to 10mg/m<3>.

The invention provides a head for injecting a liquid under pressure from a borehole to break up the soil, said head being mounted at the end of a drill string including liquid feed means for feeding a liquid under pressure. The head comprises a body and an outside wall, the body having at least one injection nozzle mounted therein, the nozzle having an inlet diameter equal to d and presenting an axis x,x', the body also having duct-forming means. The duct-forming means present a mean line having a first end connected to the bottom end of the liquid feed means and having a second end connected to the nozzle tangentially to the axis x,x'. The mean line is defined by at least one curved portion presenting a radius of curvature that varies continuously. The right section of the duct-forming means decreases regularly over at least half of its length from its first end to its second end.

The present invention provides a head for injecting a fluid under pressure for breaking up the ground from a borehole and mounted at the end of a string of rods. The body of the drilling head has a bottom wall for mounting a mechanical drilling tool having a feed pipe, at least one injection nozzle, and duct-forming means for connecting the feed pipe with liquid at the inlet of said nozzle, the duct-forming means presenting a mean line having a radius of curvature that varies continuously, the right section of said duct-forming means decreasing regularly over at least half its length from its first end towards its second end. The injection head further comprises at least one pipe for feeding said mechanical tool, said pipe being connected at a first end to said duct-forming means and at a second end to a chamber disposed at the bottom end of said injection head and fitted with a controllable shutter member interposed between said chamber and the pipe for feeding said mechanical tool.

The invention provides a pulsed jet fire-fighting lance, which comprises a connecting piece, a rectifying device, a conical nozzle and a pulse nozzle hermetically and fixedly connected and communicated with one another in sequence, wherein the inlet of the rectifying device is hermetically and fixedly connected with the connecting piece; and other parts are in threaded connection and communication with one another through a sealing pipe. In the invention, the inlet end of the lance is provided with the rectifying device, so that the turbulence of jet is reduced, and the range is increased by 10-25 percent compared with the conventional lance; a continuous fluid flowing through an oscillation cavity is transformed into pulsed jet by using the special structure of the oscillation cavity without other additional auxiliary equipment; and the amplitude of outflow pressure is increased by 15-30 percent, so that the hitting dynamics and fire-fighting effect of the lance are enhanced under the condition of the same water flow, energy consumption is saved, and the performance of the fire-fighting lance is improved effectively. The pulsed jet fire-fighting lance can be widely applied to fire-fighting and cleaning systems of a fire-fighting system.

The invention provides a remote dust-free concrete sprayer and belongs to the technical field of concrete spraying devices used in underground coal mines. The remote dust-free concrete sprayer aims at solving the problems of short spraying distances and high springback rate of an existing sprayer. A feeding portion of the existing sprayer is improved, a conical feeder is adopted, at least two rotor material cups are annularly arranged on the surface of a feeding rotor of a cylindrical structure or a circular truncated cone shaped structure at intervals, the feeding rotor is in sealed connection with a feeding shell, the rotor material cups sequentially pass through a feeding port, a discharging port and a residual air port of the feeding shell along with the feeding rotor, when the rotor material cups gradually rotate to the discharging port of the feeding shell, an air supplementing port is communicated with the rotor material cups to enable materials in the rotor material cups to quickly enter a spraying portion, the rotor material cups continue to rotate along with the rotor and later pass through the residual air port of the feeding shell to discharge out residual air and materials in the rotor material cups so as to facilitate that the rotor material cups receive materials from a hopper portion again when continuing to rotate to the position of the feeding port.

The invention discloses a mining rotor type variable shotcrete machine. The mining rotor type variable shotcrete machine comprises a frame, a rotor block, a drive motor, a gun head injection pipe and a hopper, wherein a plurality of U-shaped cavities penetrating through the rotor block and having fan-shaped sections are distributed in the rotor block in the circumferential direction; the gun head injection pipe comprises a conical spiral feeding pipe and a conical discharging pipe, one end, with smaller diameter, of the conical spiral feeding pipe is connected with an injection pipe base, and the other end is connected with one end, with larger diameter, of the conical discharging pipe; with the adoption of the U-shaped cavity structures, the fan-shaped cavities replace cylindrical cavities, so that the volume efficiency of the cavities realizes maximum, the section utilization rate of the rotor block is increased, air feeding and material discharging are more continuous and more uniform, the pulse phenomenon of material discharging is greatly reduced, and resilience and dust are reduced. Meanwhile, the gun head injection pipe is spliced by two sections of conical pipes, so that an injection material and water are mixed sufficiently and uniformly, the injection quality is improved, the injection layer is more compact, and homogeneity and strength are improved.

The present invention provides one kind of micro fluid jet unit and the method of improving micro fluid jetting quality. One resistor sensing unit is used in the resistance detection of the heater in the micro fluid jet unit, and one signal control unit is used for regulating the driving signal based on the detection result, so as to improve micro fluid jetting quality and raise the use performance of the micro fluid jet unit.

The embodiment of the invention discloses a fluid trace injection device. The fluid trace injection device comprises a base body, a lever, an actuator, a fluid seat, a nozzle, a guide seat and a movable element, wherein an execution mechanism mounting cavity is defined in the base body, and a positioning hole is formed in the base body; the lever is arranged in the execution mechanism mounting cavity, and the two ends of the lever are movable; the actuator is telescopically arranged in the execution mechanism mounting cavity and connected with one end of the lever; the base body is arranged onthe fluid seat; the nozzle is arranged on the fluid seat; a guide hole penetrating in the axial direction of the guide seat is defined in the guide seat, the lower end of the guide seat extends intothe mounting cavity and is in threaded connection with the fluid seat, and the upper end of the guide seat can extend into the positioning hole when the base body and the fluid seat are assembled; andthe movable element is arranged in the guide hole and can move in the axial direction of the guide seat, and the upper end of the movable element is connected with the other end of the lever in a clamped mode when the base body and the fluid seat are assembled and driven by the lever to move in the axial direction of the positioning hole. According to the fluid trace injection device, the servicelife is long, and the fluid injection quality stability is high.

The invention relates to a jacket cooling disassembling type flame spraying device, which comprises an outer shell body, an inner shower nozzle arranged in the outer shell body, and a bushing, whereinthe outer shell body comprises a circular tube shaped connecting tube and a tapered tube shaped heat dissipation tube; the inner spray nozzle comprises a cylinder body of which the outer side wall isof a cylindrical structure; the central shaft of the cylinder body is provided with a circular truncated cone shaped first through hole; the center of the first end of the cylinder body is provided with a cylindrical boss; and the bushing comprises a tapered tube shaped first tube body and a circular tube shaped second tube body, wherein a clapboard is arranged in the second tube body. The outershell body, the inner shower nozzle and the bushing in the jacket cooling disassembling type flame spraying device adopt a detachable structure, so that an installation and replacement operation is simple and convenient. A jacket cooling way is adopted for the bushing so as to be favorable for controlling an injection temperature and improving subsequent injection quality; the inner surface of thebushing is subjected to surface treatment so as to be convenient to remove coking objects on the surface, and a situation that the bushing is frequently replaced is avoided.

An ink unit comprising an ink for use in an ink jet recording apparatus; and a liquid-contacting member that contacts with the ink, wherein the ink comprises a phthalocyanine dye of a specific structure which has an oxidation potential of 1.0 V (vs SCE) or more, and wherein the major component of the ink-contacting member is a polyolefin containing [1] a specific hydrotalcite-like compound, [2] a fatty acid and/or fatty acid derivative, [3] a phenolic antioxidant having an isocyanurate skeleton or [4] an alkyl-substituted benzylidenesorbitol.

The invention relates to the technical field of wet spraying machines, in particular to an atomizable wet spraying machine for soil environment treatment engineering of a waste mining area. The atomizable wet spraying machine comprises a compartment; a crushing device is arranged on the upper side of a mounting frame; the crushing device comprises a discharging box, a crushing box, a crushing shaft mounting seat, a crushing shaft, a crushing cutter, a motor mounting seat and a crushing motor; a conveying discharging and scattering device comprises a conveying and discharging box, a conveying and discharging spiral shaft, a scattering and discharging box, a scattering shaft, a scattering rod, a driving gear, a driven gear and a scattering motor; and a nozzle is arranged at the position, away from the lower side of the scattering and discharging box, of a spraying pipe. Grass seeds, fertilizer and soil can be crushed and mixed through the crushing device; the discharging speed can be effectively controlled through the discharging spiral shaft; meanwhile, the scattering shaft in the scattering and discharging box is matched with the discharging speed to operate; and the materials arescattered and mixed again through the scattering rod, so that the grass seeds, the fertilizer and the soil are mixed more sufficiently and thoroughly, and the spraying quality and efficiency of the wet spraying machine are improved.

The invention belongs to a shaftless spiral material mixing, stirring and feeding machine. The shaftless spiral material mixing, stirring and feeding machine comprises a base, a main stirring shell, amain shaftless spiral and a power assembly. The main stirring shell is arranged on the base in a supporting manner. Multiple feeding bins are arranged on the main stirring shell. The feeding bins include the first feeding bin and the second feeding bin. A discharge port is formed in the end portion of the main stirring shell. The main shaftless spiral is arranged in the main stirring shell in a matched manner. The main shaftless spiral is of a sectional type structure. The main shaftless spiral at least comprises a first main spiral section and a second main spiral section. The first main spiral section and the second main spiral section correspond to the first feeding bin and the second feeding bin correspondingly. The formed shaftless spiral material mixing, stirring and feeding machineis compact in structure, convenient to move and free of bonding and does not need to be cleaned, the guniting work efficiency is improved, the guniting work labor intensity is lowered, and the spraying quality is improved.

The invention discloses a closed-type washing machine top cover plate dedusting method and belongs to the field of dedusting equipment. The dedusting method removes dust through a dedusting system. The dedusting system comprises a supporting mechanism and a cleaning mechanism, wherein the supporting mechanism comprises a support, cylinders and a working stage; the vertically downward cylinders are installed on a top plate of the support; pressure plates are connected to piston rods of the cylinders and used for compressing workpieces; lifting mechanisms are used for controlling jet mechanisms to move up and down; and the side wall or the top of the support is connected with a dedusting device. According to the dedusting method, all faces are subjected to jet processing one by one, dedusting treatment can be conducted while cleaning is conducted, cleaning treatment is conducted through vertical movement of jet pipes, the cleaning efficiency and quality are remarkably improved, the workshop environment is improved, and injuries to workers is reduced.

The invention discloses a nozzle-replaceable spraying device convenient to clean, which comprises a device main body structure, one side of the device main body structure is connected with a coating collector structure for ensuring a working environment, the bottom of the device main body structure is connected with a damping seat structure capable of buffering, and the bottom of a conveying device is connected with a fixing block structure with a pressurizing effect. According to the coating spraying device, drifting coating is collected through the protective door and the coating collector structure, the working environment is improved, the surface of the spraying device is comprehensively cleaned through the spring brush, the coating in air is prevented from being adhered, and the coating spraying device is convenient to use. And a cleaning brush is driven by a hydrodynamic plate to clean the interior of the flow guide pipe structure, blockage caused by coating adhesion is prevented, and the nozzle structure is convenient to replace through separation of a fixing bolt and a fixing groove.

The invention provides a rotary speed-limiting floating jet tool. The rotary speed-limiting floating jet tool comprises an outer cylinder and a rotating shaft, wherein the rotating shaft is installed in the outer cylinder in a rotatable and axial reciprocating movement mode, a liquid passing channel is formed in the rotating shaft, the front end of the rotating shaft is provided with a spraying hole used for centrifugal spraying, the rear end of the rotating shaft communicates with the outer cylinder, the spraying hole communicates with the liquid passing channel, and a speed limiting structure is arranged between the outer cylinder and the rotating shaft; the rotating shaft is arranged to be driven by liquid conveyed into the liquid passing channel from the outer cylinder, so that rotation and axial reciprocating movement are achieved; the speed limiting structure is used for limiting the rotating speed of the rotating shaft, and the spraying hole is used for centrifugally spraying the liquid outwards. The rotary speed-limiting floating jet tool is used in cooperation with a coiled pipe, key jet treatment can be carried out on a certain specific area without the need for the coiled pipe to take up and down, and the fatigue life of the coiled pipe is effectively guaranteed.

The invention provides a nozzle for a wet-spraying trolley. The nozzle comprises a tapered cavity, an inlet part configured to be in a cylinder shape and arranged at the large diameter end of the cavity, a spraying port configured to be in a cylinder shape and arranged at the small-diameter end of the cavity, a plurality of first air inlets and a plurality of second air inlets; and the first air inlets and the second air inlets are circumferentially and evenly formed in the side wall of the inlet part at intervals, and the first air inlets and the second air inlets are arranged at intervals inthe axial direction. A plurality of first rifle line grooves are formed in the inner wall of the cavity, a plurality of second rifle line grooves are formed in the inner wall of the spraying port, the second rifle line grooves are smoothly connected with the first rifle line grooves, and the first rifle line grooves and the second rifle line grooves are configured to enable the compressed gas from the air inlets and the second air inlets to accelerate concrete from the inlet part, axial rotation is generated, and the concrete is evenly sprayed from the nozzle.