31results about How to "Improve slag discharge efficiency" patented technology

The present application relates to complex stratum pile foundation construction technology field, disclose a kind of riprapping stratum full casing rotary and rotary drilling combined hole construction method, comprising the following steps: leveling construction ground;Pile position lofting is carried out, and guiding positioning structure is set;First section casing with grouting passage is installed on full casing rotary drilling machine, grouting passage is used for grouting;Through full casing rotary drilling machine clamping casing, drive casing press into riprapping stratum, while rotary drilling carries out soil taking;Slurry is injected by grouting passage, and riprapping body outside casing is consolidated to form annular consolidated body;The elevation difference between the soil taking surface of rotary drilling and the bottom end of casing is controlled to be within the preset range, and the following protection wall is formed;Lengthen next section casing, and connect adjacent grouting passage;Until casing penetrates riprapping layer and main sand layer and enters lower stable layer.The present application can solve the problems of difficult riprapping stratum hole forming, easy hole collapse, easy grouting leakage and easy drill sticking.

The utility model relates to the technical field of disc type separator, concretely is a disc type separator slagging-off port protection structure, including the drum, the slagging-off port that opens on the lateral wall of drum and installs the protection piece on the slagging-off port, the slagging-off port is evenly distributed along the circumference of drum, the protection piece includes the connecting section and respectively located big bending section and small bending section of the both ends of connecting section, connecting section, big bending section and small bending section integrated, the protection piece sets up between two adjacent slagging-off ports, big bending section is connected in one of the lateral wall of slagging-off port, small bending section is connected in the lateral wall of adjacent slagging-off port, and the connecting section is located in the inside of drum, this scheme can block the solid material impact slagging-off port in disc type separator, reduces the wear and deformation of slagging-off port, prolongs the service life of drum, and the structure is simple, effectively promotes the dismounting convenience, reduces the installation maintenance cost.

The utility model discloses a pump suction type reverse circulation drilling machine for pile foundation construction, which relates to the technical field of circulation drilling machines, and comprises a mounting plate and a plurality of mounting holes, and further comprises a drilling mechanism arranged on the mounting plate and used for drilling; the pump suction mechanism is arranged on the drilling mechanism, and the pump suction mechanism comprises a mounting part arranged on the drilling mechanism; the number of the mounting grooves is multiple, and the multiple mounting grooves are formed in the mounting piece; the slag suction pump is arranged in the mounting groove; the auxiliary pump is arranged in the mounting groove; the double-head connector is arranged on the slag suction pump; the first pipeline is arranged between the double-end connector and the auxiliary pump; and the first connecting pipeline is arranged on the auxiliary pump. According to the device, by arranging the pumping mechanism, when the device is deeply drilled, the deep hole deslagging efficiency can be improved through the combined action of pumping and jet flow through a double-pump linkage circulating system.

This utility model relates to the technical field of slag discharge devices for furnace slag coolers, and discloses a slag discharge speed adjustment device for furnace slag coolers. The device includes a slag discharge cylinder, with an adjustment cylinder fixedly connected to the outer wall near the bottom. A rotating disk is movably connected to the bottom of the inner wall of the adjustment cylinder. The top of the rotating disk has six equidistant, annularly distributed inclined adjustment slots. An adjustment block is inserted into one end of the inner wall of each inclined adjustment slot. The output end of the adjustment block is located on the upper surface of the rotating disk. A limit slide is provided at the bottom of the slag discharge cylinder. The top output end of the adjustment block is slidably connected to the top of the inner wall of the limit slide. Through the cooperation of the above structures, this device achieves precise adjustment of the slag discharge speed of the furnace slag cooler. The rotating disk is driven to rotate by a forward and reverse motor, causing the adjustment block to move within the limit slide, changing the cross-sectional area of ​​the slag discharge channel. Simultaneously, a stirring roller driven by a servo motor prevents slag blockage, improving slag discharge efficiency and production stability, making it more practical.

The present invention relates to a push-type guide drill bit, a drilling tool and a drilling method for underground coal mines. The present invention introduces flushing fluid into a groove body arranged on the outer surface of the drill bit body, and uses the flushing fluid to drive a push leg arranged in the groove body to extend out of the groove body to adjust the drilling direction. Therefore, the present invention has higher drilling efficiency, higher trajectory control accuracy and higher safety.

The invention relates to a kind of air and water pumping conversion device and its adaptive drilling method, including coaxial nesting device and adaptive control device, one end of coaxial nesting device is equipped with gas extraction hose, high-pressure water supply hose and high-pressure air supply hose, the other end is connected with coaxial nesting drill rod, coaxial nesting drill rod is connected with drill bit, and coaxial nesting device is connected with adaptive control device;Coaxial nesting device includes outer cylinder, three layers of pipes are arranged in outer cylinder, which are water supply channel, air supply channel and extraction pipeline arranged coaxially from outside to inside, the end of water supply channel is connected with high-pressure water supply hose;The end of air supply channel is connected with high-pressure air supply hose;The end of extraction pipeline is connected with gas extraction hose.The invention realizes multi-system integration by coaxial nesting channel design, dynamically switches power mode and gas extraction strategy by combining BP neural network model and real-time sensor data, and solves the problems of low efficiency, poor safety and insufficient adaptability in prior art.

The utility model discloses an anti-vibration and anti-deposition residue collecting device which comprises a box body, and the box body is provided with a residue stirring device. An inclined filter plate is arranged at the bottom in the box body, and a water hammer absorbing device is mounted at the top in the box body; a water hammer absorbing device is arranged at the top of the box body, the water hammer absorbing device comprises an air cylinder, the bottom of the air cylinder is communicated with the box body, a piston is arranged in the air cylinder, and a sealing ring is arranged on the outer side of the piston; the sediment collecting device has the advantages that the sediment can be effectively prevented from being deposited at the bottom, meanwhile, the shock-proof function of the sediment collecting device can effectively reduce the impact force of surge on the sediment groove, the service life of the sediment collecting device is prolonged to the maximum extent, and the cost for treating membrane concentrated liquid is reduced to a certain extent.

The utility model relates to a T-shaped tundish deslagging device, and belongs to the technical field of steelmaking equipment in the metallurgical industry. According to the technical scheme, the slag discharging device comprises a T-shaped tundish (1), slag discharging openings (2), slag sliding grooves (3), slag hoppers (4) and a flow stabilizer (12), the number of the slag discharging openings (2) is two, the two slag discharging openings (2) are formed in the positions, on the two sides of the flow stabilizer (12), of a tundish body of the T-shaped tundish (1) respectively, one slag sliding groove (3) and one slag hopper (4) are arranged below each slag discharging opening (2), the slag sliding grooves (3) are located between the slag discharging openings (2) and the slag hoppers (5), and the slag sliding grooves (3) are obliquely arranged. And a slag blocking wall (11) matched with the flow stabilizer (12) is arranged in the T-shaped tundish (1). The tundish slag removal device has the advantages that the flowing track of molten steel in a tundish can be improved, the retention time of the molten steel in the tundish is prolonged, floating removal of inclusions is promoted, and the slag removal efficiency of the tundish is improved.

The invention belongs to the field of coal mine underground drilling, and particularly discloses a pressure-relief blowout-prevention combined spiral drilling tool for upward hole drilling and a using method thereof.The pressure-relief blowout-prevention combined spiral drilling tool comprises a spiral slag feeding drill bit, a sieve hole spiral drill rod section, a spiral drill rod section, a rotary slag discharging device and a drill tail slag collecting device which are arranged in an inclined upward drill hole; 2-4 continuous spiral blades are arranged on the outer surfaces of the spiral slag feeding drill bit, the screen hole spiral drill rod section and the spiral drill rod section, and a spiral slag discharging channel is formed between every two adjacent spiral blades; a plurality of slag inlets are formed in the spiral slag feeding drill bit, a plurality of radial slag inlets are formed in the spiral slag discharging channel of the screen hole spiral drill rod section, and the slag inlets and the slag inlets are all communicated with the air leakage slag discharging channel. According to the drilling tool, the gas leakage deslagging channel located in the center of the drilling tool is additionally arranged, in the drilling process, on one hand, the deslagging efficiency can be greatly improved, the drilling resistance is reduced, on the other hand, high-pressure gas can be prevented from being accumulated in a drill hole, and the pressure relief and blowout prevention functions are achieved.

The invention provides a deslagging system of a vertical shaft heading machine under tuff geological conditions, which is used for solving the problem that when the vertical shaft heading machine in the prior art is used for deslagging in a scraping plate manner, muddy rock slag adhered to a scraping plate of the vertical shaft heading machine cannot be removed or the muddy rock slag solidified into solid rock slag cannot be removed to block a channel. In order to achieve the purpose and other related purposes, the invention provides a deslagging system of a vertical shaft heading machine under the tuff geological condition. The deslagging system comprises a cutterhead body, a lifting unit of a deslagging channel located in the center of the cutterhead, a deslagging unit comprising a conveying subunit and a scraper, a topsoil cleaning subunit and a solidified tuff cleaning subunit, and the deslagging system capable of timely cleaning the scraper in the deslagging unit underground is obtained. Therefore, the problem that in the prior art, when the vertical shaft heading machine discharges slag in a scraping plate mode, muddy rock slag adhering to a scraping plate of the vertical shaft heading machine cannot be discharged or the muddy rock slag cannot be discharged after being solidified into solid rock slag, and a channel cannot be blocked is solved.

The present application relates to the technical field of tunnel construction, in particular to a medium-wind-pressure slag discharge construction process under the geological conditions of super-large buried depth and high stress soft coal seam, comprising the following steps: S1, establishing a slag discharge system, the slag discharge system comprising a medium-wind-pressure conveying system and a ground slag discharge system, the ground slag discharge system being communicated with a coal uncovering hole through a slag discharge channel, the slag discharge channel and the coal uncovering hole axis intersecting at an included angle, the included angle M satisfying 30°≤M<90°; S2, drilling construction; S3, installation of an extraction pipe; S4, regular extraction and checking of extraction concentration. The gas can be diluted by air pressure, the gas concentration is reduced, and the construction safety is ensured. Meanwhile, the slag is conveyed to the ground slag discharge system through the slag discharge channel which is separately established and intersects with the coal uncovering hole at an acute angle, the slag can smoothly enter the slag discharge channel along the drilling axis direction, the slag conveying distance between the drill pipe and the ground slag discharge system is extended, which is conducive to avoiding the situation of hole spouting caused by slag blockage at the hole position, the slag discharge efficiency is improved, and the hole spouting risk is reduced.

The invention relates to the technical field of aluminum alloy conductors, and discloses a novel aluminum alloy conductor preparation device and a preparation method thereof.The novel aluminum alloy conductor preparation device comprises a bottom supporting table, the top of the bottom supporting table is fixedly connected with a bottom heating machine, one side of the bottom supporting table is fixedly connected with a supporting side frame, and the top of the bottom supporting table is fixedly connected with a bottom electric push rod; the output end of the bottom electric push rod is fixedly connected with a connecting table; internal liquid is driven to be rapidly mixed through the rapidly rotating refining cylinder, so that the mixing efficiency of a refining agent is improved, meanwhile, the mixing effect of alloy and molten aluminum is improved, and the preparation effect of an aluminum alloy conductor is improved; different transmission parts can be conveniently driven to work through the portable adjusting top connecting disc, the portability of molten aluminum preparation is improved, and manual repeated operation is not needed; and the bottom filter screen which is automatically moved out can bring out particulate matters such as scum in the molten aluminum, so that an operator does not need to repeatedly use tools, the workload of the operator is reduced, and the deslagging efficiency is improved.

The application discloses an automatic slag discharging device and numerical control machine tool equipment. The automatic slag discharging device comprises a straight-out slag discharging structure and a confluence slag discharging structure, and the straight-out slag discharging structure and the confluence slag discharging structure are arranged on different sides of a machining platform respectively. The straight-out slag discharging structure comprises a straight-out screw rod and a straight-out groove, and the extension direction of the straight-out groove is parallel to the axial direction of the straight-out screw rod. In the cross section perpendicular to the axial direction of the straight-out screw rod, at least part of the straight-out screw rod is located in the straight-out groove. The straight-out screw rod is used for rotating around the axial direction to move the slag in the straight-out groove along the extension direction of the straight-out groove. The confluence slag discharging structure comprises a confluence screw rod and a confluence groove, and the extension direction of the confluence groove is parallel to the axial direction of the confluence screw rod. In the cross section perpendicular to the axial direction of the confluence screw rod, at least part of the confluence screw rod is located in the confluence groove. The confluence screw rod is used for rotating around the axial direction to move the slag in the confluence groove along the extension direction of the confluence groove. The straight-out groove is connected with the confluence groove. The slag discharging efficiency is high.

The invention belongs to the technical field of filter pressing equipment, and discloses a filter pressing device for electrolytic zinc production and a filtering method.The filter pressing device comprises a filter pressing cylinder, a driving assembly, a filtering assembly, a push ring, a contraction assembly and a push rod sliding in the filter pressing cylinder, the filter pressing cylinder is fixedly installed on a machine body support, the driving assembly is fixedly installed on the machine body support, and the push ring is fixedly installed on the machine body support; the driving assembly is used for driving the push rod to move in the axial direction, the filtering assembly is connected into the filter pressing cylinder in a sliding mode and arranged on the push rod in a sleeving mode, the filtering assembly comprises an installation sleeve, at least two sliding grooves are formed in the outer wall of the installation sleeve, and locking assemblies are installed on the inner walls of the sliding grooves. When the filter screen moves towards the outside of the filter pressing cylinder, the circumferential edge of filter residues compressed into a disc shape is gradually separated from the inner wall of the filter pressing cylinder, so that the contact area between the structures is reduced, meanwhile, when the filter screen moves, the filter residues attached to the filter screen are loosened, the filter screen can push the filter residues out of the filter pressing cylinder, and therefore rapid residue discharging is achieved.

The invention relates to the technical field of shield tunneling machine automatic control, in particular to an automatic control system and method for a shield tunneling machine muddy water conveying system, and the method comprises the following steps: when a shield tunneling machine starts tunneling or stops tunneling, executing a bypass mode, and transiting from the bypass mode to a tunneling mode or transiting from the bypass mode to a stop mode. According to the automatic control system and method, the tunneling mode, the stop mode and the bypass mode are set, the muddy water conveying system is automatically controlled to enter the bypass mode according to whether the shield tunneling machine conducts tunneling or not, then the muddy water conveying system enters the tunneling mode or the stop mode from the bypass mode, and through transition of the bypass mode, the muddy water conveying system is automatically controlled to enter the tunneling mode or the stop mode. And the stability of muddy water circulation and pressure adjustment can be ensured.

The utility model discloses a kind of primary liquid purification slag discharge devices, it is related to primary liquid purification technical field, including support frame, the side of the support frame is equipped with outer shell, the bottom of the outer shell is equipped with slag discharge cylinder, in the utility model, with the rotary motion of adjusting plate, high-pressure water flow is sprayed from connecting pipe, the inside of slag discharge cylinder and outer shell can be washed, simultaneously drive motor works and drives connecting rod rotation, cleaning is carried out to the sediment adhered in the inside of slag discharge cylinder by scraper movement, sediment adhered in equipment inner wall, pipeline and slag discharge port etc. part is washed away quickly by the way of cooperation of high-pressure water washing and mechanical scraping, so that sediment is discharged smoothly with water flow, improve the slagging efficiency.

The utility model discloses a kind of high-temperature pyrolysis incineration slag pool rapid deslagging equipment, including support, storage tank, suction pump unit and auxiliary components, support is frame type structure, bottom with locking function's universal caster realizes flexible movement and positioning, storage tank is fixed on the top of support, suction hose that is sealed by flange connection is in-depth in each place of slag pool, tank bottom deslagging and sewage outlet facilitate deslagging, top manhole facilitates maintenance, motor in suction pump unit drives vacuum pump to generate greater than 0.09MPa negative pressure via coupling, the damping tank of outlet pipeline maintains vacuum stability, contact medium component is coated with silicone anticorrosive layer and is corrosion resistant, support side control device can adjust vacuum pump start-stop and rate, equipment forms "adsorption-temporarily stores-sewage" circulation, can quickly clean slag material, shorten dredging and fault maintenance time, reduce labor intensity, applicable to medical waste and hazardous waste incineration industry, guarantee production safety.

This application provides a novel ship control hull mold casting system, relating to the field of metal casting molds. It includes a gating structure on one side of the cavity and an venting structure on the remaining sides of the cavity. The gating structure is stepped, positioned at the top of the cavity and higher than the cavity itself. The gating structure includes a riser, a main channel, two branch channels, and multiple sub-channels connected sequentially along the pouring direction. The two branch channels extend obliquely to both sides from the ends of the main channel, with their widths gradually decreasing. Each branch channel branches out two spaced sub-channels on its side facing the cavity. The height of the sub-channels gradually decreases, and their width gradually increases at their ends. The height of the sub-channels is lower than the height of the branch channels, and the height of the branch channels is lower than the height of the main channel. The venting structure includes multiple venting slag bags spaced apart and connected to the bottom of the outer side of the cavity. This application effectively solves the technical problems of turbulence and slag inclusions easily generated by traditional flow channels.

The utility model relates to a cutter head structure optimizing device of a rock tube push bench. The cutter head structure optimizing device comprises a crushing cutter head and a secondary crushing device, the secondary crushing device comprises a crushing arm and a conical crushing bin, the crushing arm is fixed to the back face of the crushing cutter head, crushing strips are annularly arranged on the side, facing the crushing arm, of the conical crushing bin, a muddy water bin is arranged on the back face of the conical crushing bin, and screening holes are formed between the two crushing strips at the bottommost portion of the conical crushing bin and used for allowing gravel muck to enter the muddy water bin. The rock crushing device has the advantages that the crushing arms are arranged on the back face of the crushing cutterhead, the crushing strips are correspondingly arranged on the surface of the conical crushing bin, and when the crushing cutterhead rotates, the crushing arms and the crushing strips squeeze rock fragments to further crush the rock fragments, so that the rock crushing efficiency is improved, and follow-up discharging is facilitated.

The utility model relates to the technical field of coal mills, and discloses a slag discharge device of a coal mill, which comprises a discharge barrel, a feed port is arranged at the top of the discharge barrel, two discharge ports are arranged at the bottom of the discharge barrel, and a guide mechanism is arranged in the discharge barrel. The two discharging ports are formed in the bottom of the discharging barrel, waste residue discharging has multiple choices due to the two discharging ports, meanwhile, the guiding mechanism is additionally arranged in the discharging barrel and can seal any discharging port, when a collecting box of one discharging port is full, the discharging port on the side of the discharging port can be sealed through the guiding mechanism, and therefore waste residues can be discharged conveniently. The waste residue is discharged from the other discharge port, so that the downtime for cleaning the collecting box is saved, the residue discharge efficiency is improved, and meanwhile, the cloth bag cylinder is arranged on the discharge port, so that the flying dust amount during residue discharge of the discharge port can be greatly reduced.

The utility model discloses a high-concentration waste water recovery device which comprises a recovery tank body, a stirring mechanism is rotatably arranged on the upper portion in the recovery tank body, a water inlet filter tank is arranged on one side of the upper end of the recovery tank body, a filter screen is arranged in a water inlet between the water inlet filter tank and the tank body, and an ash scraping plate is arranged at the bottom in the water inlet filter tank through an air cylinder. A filter screen is arranged on the inner side of the water inlet between the water inlet filter tank and the tank body, a dust plate cleaning mechanism is arranged on one side of the upper end of the water inlet filter tank, an acid liquor inlet pipe and an alkali liquor inlet pipe are further arranged on the upper portion of the recycling tank body, and a PH sensor is arranged at the bottom in the recycling tank body. And then the concentration of the wastewater is detected through the pH sensor, and when the acid-base concentration is unqualified, acid-base liquid is added through the acid liquid inlet pipe or the alkali liquid inlet pipe to prepare a water body with qualified concentration, so that the acidic or alkaline high-concentration wastewater is conveniently recycled, and the recycling efficiency is relatively high.

The invention relates to the technical field of kitchen waste dehydration, in particular to an automatic dehydration device for kitchen waste. Comprising a storage box and a dehydration treatment cabinet, and a feeding assembly is arranged on the outer side wall of the dehydration treatment cabinet; an extrusion mechanism and a filtering and separating assembly are arranged in the dehydration treatment cabinet; the extrusion mechanism comprises a transmission box, the side wall of the transmission box is fixedly connected with two sets of mounting plates, and a worm gear is rotationally connected between the two sets of mounting plates; two groups of crank connecting rods synchronously rotate, one group of linkage shafts drive the extrusion plate to move downwards, the other group of linkage shafts drive the extrusion plate to move upwards, and automatic switching of the rotating directions of spiral blades is matched, so that uninterrupted alternate switching feeding operation of two groups of filter cartridges is realized, and feeding and filter pressing of kitchen garbage are simultaneously performed; and energy is saved while the dehydration efficiency of the kitchen garbage is improved.

The utility model discloses a down -the -hole drill anti -circulation flush system, including the flush valve body between being arranged in the rotary head part and the deslagging pipe, the flush valve body cooperation of using is installed between the rotary head part and the rotary head adapter pipe. The utility model discloses the cooperation of using of flush valve body and pipe, need not stop the machine to start dynamic flush function, and high -pressure air carries out real -time deslagging and cooling to double -walled drill rod, and the deslagging efficiency is promoted, and the operation continuity is improved, realizes efficient on -line maintenance, the cylinder of outer square inner circle cooperates with copper sleeve, makes the valve core unit wear rate reduce, prolongs the service life of valve core unit, and the cooperation of mechanical structure and fluid control realizes the switching of the system in " flush mode " and " anti -circulation mode " provides technical support for the mine automation construction.

The present invention provides a small-opening panel-type tunnel boring machine cutterhead and a tunnel boring machine including the same, belonging to the technical field of tunnel engineering construction; including a panel, a cutter and an adjustable sealing plate assembly; a plurality of slag discharge holes are provided on the panel, and the aperture size of a single slag discharge hole is smaller than the particle size through which a slurry pump can pass; and the cross section of a single slag discharge hole is set to be a square, and the vertical section of a single slag discharge hole is set to be a conical trumpet-shaped structure with a small front and a large rear; a cutter is installed on the side end face of the panel close to the tunneling direction; and the adjustable sealing plate assembly is arranged on the end of the panel away from the cutter. By arranging an opening adjustable sealing plate assembly, when the cutterhead of the small-opening panel-type tunnel boring machine is tunneling in a formation with poor stability such as sand, the outer opening is blocked by the sealing plate, and the cutterhead opening rate is reduced to improve the balancing ability of the cutterhead to the face; when the cutterhead is tunneling in a formation with good stability such as clay, the sealing plate is adjusted to increase the cutterhead opening rate to prevent the cutterhead from sticking and improve the cutterhead slag discharge efficiency.

The utility model belongs to the technical field of extraction tank, concretely is a kind of spice extraction tank, including tank body, extraction mechanism and deslagging mechanism, the extraction mechanism is arranged in the inside of the tank body, the deslagging mechanism is arranged in the inside of the tank body and is connected with the extraction mechanism;The extraction mechanism includes the separation cylinder fixedly connected in the inside of the tank body, the inside of the separation cylinder is equipped with filter cylinder, the top of the tank body is fixedly connected with first motor, the output of first motor is connected with the rotating shaft extending to the inside of the tank body, the outside of the rotating shaft is fixedly connected with several groups of stirring piece.This spice extraction tank, by first helical shaft vertical transfer slag to second helical shaft, realize efficient deslagging, first helical shaft is connected with rotating shaft by magnetic coupling, rely on electromagnetic control to realize flexible start-stop, when deslagging, magnetic coupling drives first helical shaft to rotate by the driving force of first motor, and slag material is smoothly discharged from tank body.

The manganese-silicon alloy smelting slag flushing pool comprises a pool body, a sliding top cover, a push plate, a drainage pipe and a drawing plate, two sliding grooves are formed in the edges of the top ends of the two sides of the pool body, bottom protrusions of the sliding top cover are slidably connected with the inner sides of the sliding grooves, and a slag inlet is formed in the right side wall of the sliding top cover; a limiting groove is fixedly formed between the inner side walls of the sliding top cover, a lead screw is movably installed at the bottom of the limiting groove, a cooling box is fixedly installed at the top end of the sliding top cover, a heat absorption iron plate is fixedly installed on the inner side of the cooling box, and a cooling fan is fixedly installed on the outer side wall of the cooling box; a partition plate is fixedly mounted on the inner side wall of the tank body above the separation tank, and a plurality of permeable holes are uniformly formed in the surface of the partition plate; according to the device, the sliding top cover is arranged to continuously absorb water vapor from the slag, and the push plate is arranged to push the slag, so that filter residue accumulation caused by accumulation is avoided, and the practicability is high.

The application discloses a kind of super-large-caliber super-deep cyclone shaft double-reverse suspension body solid wall rock mass excavation methods, belong to shaft excavation technical field.This method is based on the construction of pilot hole of rotary drilling rig, constructs annular blasting free face, uses top blasting+bottom guide well slag discharge double-reverse construction mode, simultaneously combines system anchor rod+spraying concrete suspension body solid wall technology, through cyclic development excavation-reinforcement operation, realize the safe, efficient excavation of super-large-caliber super-deep cyclone shaft.The application effectively solves the technical problems, such as the difficulty in constructing free face, poor blasting effect, poor surrounding rock stability and low slag discharge efficiency, during the excavation of super-large-caliber super-deep shaft, significantly improves the safety, economy and construction efficiency of excavation operation, reduces the influence of blasting vibration on the surrounding environment and surrounding rock, ensures that the shaft excavation quality meets the design requirements, and is suitable for super-large-caliber super-deep cyclone shaft excavation engineering under various surrounding rock conditions.

The invention discloses a drilling, punching and protecting integrated pressure relief and blowout prevention hole construction process which comprises the following steps: firstly, moving a drilling machine to a drilling position, fixing the drilling machine, and mounting a pressure relief and blowout prevention spiral drilling tool on the drilling machine; then, the construction angle of the drilling machine is adjusted, and the drilling machine is started to drive the pressure-relief blowout-prevention spiral drilling tool to drill; after drilling to a designated position, high-pressure water flow is supplied into the drilling tool for punching operation; and after punching is completed, the hole protection device is conveyed to the bottom of the drill hole through the center of the drilling tool, and the hole protection device is clamped on the wall of the drill hole to achieve hole protection. When the pressure-relief blowout-prevention spiral drilling tool is used for conducting upward hole drilling in an underground coal mine, one part of drilling slag outside the drilling tool is discharged outwards through the spiral conveying effect of blades on the outer surface of the pressure-relief blowout-prevention drilling tool, and the other part of the drilling slag is discharged outwards through the first pressure-relief slag discharging channel, the second pressure-relief slag discharging channel and the third pressure-relief slag discharging channel. The method is convenient to operate, high-pressure gas can be prevented from being accumulated in the drill hole, the drill hole deslagging efficiency is greatly improved, and the rotating resistance of the drill rod is reduced.

This invention provides a dual-drive power system for an internal slag discharge dual-channel drilling rig, comprising: an external drive unit, an internal drive unit, and a slag collection device. The internal drive unit drives the inner drill rod of the dual-channel drill rod to rotate, and the external drive unit drives the outer drill rod of the dual-channel drill rod to rotate. The structural design of this invention allows the dual-drive power system to drive the inner and outer drill rods of the dual-channel drill rod to rotate in different directions and at different speeds. Therefore, the working state of the dual-channel drill rod can be adjusted in real time according to the actual drilling conditions. It also has the advantages of facilitating smooth slag discharge and reducing clogging; easy assembly and connection; stable connection; high sealing performance; and simple manufacturing process.