30results about How to "Effectively removed" patented technology

The invention discloses a dry-hole pressure relief valve and a hydraulic fracturing crustal stress testing device, and relates to the technical field of rock mass engineering testing. A valve core of the dry-hole pressure relief valve is inserted in a valve cavity from the insertion end of a valve body, and one end of the valve core extends out of the insertion end; a plurality of pressure relief holes are formed in the end, away from the insertion end, of the valve body, the valve core is provided with a blocking part which can block the valve cavity, and the insertion end of the valve body is provided with a limit nut for limiting the length of the part, extending out of the valve body, of the valve core; the part, located between the blocking part and the limit nut, of the valve core is sleeved with a load-bearing spring; the dry-hole pressure relief valve is simple in structure and convenient to operate, and can effectively relieve pressure in a packer. A high-pressure pump of the hydraulic fracturing crustal stress testing device is communicated with the top end of a drilling hole, the bottom end of the drilling hole is communicated with the dry-hole pressure relief value, the end, extending out of the insertion end, of the valve core is communicated with a switching valve, and the switching valve is communicated with the packer. Through the adoption of the hydraulic fracturing crustal stress testing device, crustal stress tests can be conducted under the conditions of deep drilling holes and dry holes by using a hydraulic fracturing method, and the tests are stable.

The invention relates to a power tool such as a router which is provided to perform an operation on a work piece. The tool includes dust extraction apparatus to allow dust and debris to be removed from the location at which the work is performed and part of the extraction apparatus is movable between storage and in-use positions. When said part is moved to a storage position, an alternative dust extraction passage may be fitted in to the port or aperture. Typically, the part which is movable can be telescopically movable or alternatively, can be provided of a flexible member so as to be moved between extended and retracted positions.

The invention relates to electric automobile tire dismounting detection equipment capable of realizing omnibearing fixing and clamping. The equipment comprises a support bottom plate, two clamping devices, a clamping telescopic push rod and a clamping push rod connecting plate, wherein the two clamping devices are symmetrically distributed at the left side of the support bottom plate; the right end of each clamping device is connected with the top part of the clamping telescopic push rod; the clamping telescopic push rod is arranged on the top part of the left end of the support bottom plate through the clamping push rod connecting plate; the clamping device comprises a clamping support frame, a clamping wheel, two clamping push rods, a clamping support plate, a clamping side claw, a sideclaw electric slide rail, two clamp groove branch chains, a clamping electric slide rail, two clamping mechanisms, a side claw push rod, two clamping support push rods and a clamping telescopic plate.Difficult problems that during the dismounting detection on the electric automobile tire in the prior art, the tire cannot be effectively fixed; during the dismounting of the tire, screw threads on ascrew bolt on an electric automobile can be easily damaged; the tire needs to be manually taken down from the electric automobile and the like can be solved.

The invention discloses a dual-purpose fixing mechanism for cutting an arc-shaped board. The problems that an existing operation tabletop is not suitable for cutting the arc-shaped board and the phenomenon that a cut finished product is unqualified in the cutting process is likely to happen are solved. The dual-purpose fixing mechanism comprises an operation table (1) with an operation platform and is characterized in that the operation platform is provided with two installation openings (2), the direction of a straight line formed between the two installation openings (2) is the same as the cutting moving direction of the arc-shaped board, and each installation opening (2) is internally provided with an angle adjusting component (3); the two angle adjusting components (3) are symmetrically arranged, and each angle adjusting component (3) comprises a push cylinder (31), a fixed rod (32) with the bottom end hinged to the push cylinder (31) and a movable rod (33) with the bottom end hinged to the top end of the fixed rod (32); and the top ends of push-pull shafts of the push cylinders (31) are movably connected with the movable rods (33). The dual-purpose fixing mechanism has the beneficial effects of being simple in structure, easy and convenient to operate and the like.

The invention discloses a process for taking down a rusted broken-stud screw with screw glue. The process comprises the following specific steps: punching a positioning hole for a screw rod of the broken-stud screw by using a leading punch; drilling the screw rod of the broken-stud screw from the position of the positioning hole by using a drill bit; carrying out repeated surfacing welding from inside of the hole to outside of the hole by using a welding rod until a surfacing-welded body formed by surfacing welding is exposed out of a mechanical face by over 5mm; welding a nut on the surfacing-welded body; spraying water to the screw rod of the broken-stud screw; rotating the nut by using a spanner so as to take down the broken-stud screw. The process has the advantages of effectively taking out the broken-stud screw and the like.

The invention provides a tool used for replacing a side roll resistance torsion bar bushing block of a bogie and a replacement method. The tool comprises a matrix, wherein the matrix is provided with a mounting hole used to be sheathed to a side roll resistance torsion bar bushing block in a penetrating mode along the horizontal direction; the surface of the matrix is provided with a long trough hole; the length direction of the long through hole is parallel with the center shaft of the mounting hole; the bottom of the long through hole is communicated with the mounting hole; the inside of the long through hole is fixedly provided with two side top blocks; in the long through hole, a main top block is arranged between the two side top blocks; on the matrix, a screw is in spiro union to one side of the main top block, which is opposite to a supporting convex part; and the tail end of the screw is supported on the main top block. According to the tool disclosed by the invention, the surface of the end shaft of the side roll resistance torsion bar of the bogie is free from being damaged when the side roll resistance torsion bar bushing block of the bogie is replaced, the side roll resistance torsion bar of the bogie can be reused after the bushing block is replaced, and the vehicle overhauling cost is lowered.

The invention relates to an anesthetic waste gas extraction device with a filtering structure for an anesthesia department. The anesthetic waste gas extraction device comprises a mounting plate, a hydraulic cylinder and a fixing block; a positioning bolt is arranged at the top end of the mounting plate, a waste gas bottle is arranged on one side of the mounting plate, a bolt disc is arranged at the top end of the waste gas bottle, and an inner bottle is arranged at the bottom end of the interior of the bolt disc; a sealing plate is arranged at the bottom end of the inner bottle, a sealing ringis arranged at the bottom end of the waste gas bottle, an exhaust pipe is arranged at the bottom end of the sealing ring, and clamping groove bolt discs are arranged on the two sides of the exhaust pipe. The anesthetic waste gas extraction device has the beneficial effects that the lifting frames can be pushed by power of the hydraulic cylinder, the piston plate between the lifting frames is driven to do reciprocating lifting motion between the filter bottles, waste gas in the exhaust pipe is effectively adsorbed to pass through the purification filter screens, impurities in the waste gas canbe filtered in the purification filter screens, the flowability of the reciprocating adsorption gas can be improved by power of the hydraulic cylinder, and the waste gas treatment effect is improved.

The invention relates to a graphite double-covering production device. The device comprises an arranging wall body and a graphite arranging rotating cylinder, a first lining paper rotating cylinder, asecond lining paper rotating cylinder, a first compressing rotating cylinder set, a first compressing cutting rotating cylinder set, a first waste collecting rotating cylinder, a second compressing rotating cylinder set, a first adhering rotating cylinder, a second waste collecting rotating cylinder, a third lining paper rotating cylinder, a third compressing rotating cylinder set, a third wastecollecting rotating cylinder, a fourth compressing rotating cylinder set, a glue separating rotating cylinder, a second compressing cutting rotating cylinder set, a copper foil rotating cylinder, a fourth waste collecting rotating cylinder, a fifth compressing rotating cylinder set, a third compressing cutting rotating cylinder set, a mylar rotating cylinder, a fifth waste collecting rotating cylinder, a sixth waste collecting rotating cylinder, a fourth compressing cutting rotating cylinder set, a glue covering rotating cylinder, a seventh waste collecting rotating cylinder, a third waste adhering rotating cylinder, a fourth waste adhering rotating cylinder, a sixth compressing rotating cylinder set, a covering rotating cylinder, a seventh compressing rotating cylinder set and a receivingrotating cylinder which are arranged on the arranging wall body. According to the device, in the machining process of a graphite material belt, the phenomenons that the graphite material belt is broken and the graphite material belt is layered when being cut can be prevented.

The invention belongs to the technical field of cement production, and particularly relates to a circulating bucket lifting discharging device of a roller press. The effective discharging effect is achieved through the mode that a discharging rack, a belt pulley, a conveying belt, a U-shaped frame, an oblique baffle, an electromagnet unit, a mounting beam, a disconnecting conductive unit, a shifting power supply unit and a connecting conductor are arranged at a circulating bucket lifting discharging opening; and the circulating bucket lifting discharging device has the advantages that during belt conveying, a blocking and leakage-proof structure is reasonable and effective, the oblique baffle is rapid and convenient to mount and dismount, the mounting stability is high, in the conveying process, magnetic attraction is fixed, power is disconnected when not conveying, the oblique baffle is convenient to take down, during overall using, the power is saved, and flexibility is achieved.

The invention relates to a cooking machine, an executing device and an actuator replacing mechanism, wherein the cooking machine comprises the executing device and an actuator; the executing device comprises the actuator replacing mechanism and a mechanical arm mechanism; and the actuator replacing mechanism comprises a mounting assembly and a retainer assembly, and one or more actuators are arranged to be fixed on the fixing pieces of different mounting assemblies according to use requirements. Meanwhile, at least two placing grooves which are arranged at intervals are arranged on the retainer assembly, and the fixing pieces are correspondingly arranged in the placing grooves, so that supporting pieces are positioned on the retainer assembly, and the actuators are effectively retained onthe retainer assembly. In the use process, the actuator corresponding to the mounting assembly on the placing groove can be selected according to the cooking requirement, the mechanical arm mechanismmoves to the mounting assembly corresponding to the selected actuator, and the mechanical arm mechanism is matched with the mounting assembly, so that the mounting assembly can be effectively taken down from the retainer assembly, the use of the actuator is facilitated, and the cooking efficiency is effectively improved.

The invention provides a block movement and construction method used for an inclined building berth and a movement device thereof. The block movement device comprises a support mechanism, a rolling mechanism, pulley assemblies and a traction mechanism. The traction mechanism is connected with the pulley assemblies through a steel wire rope. The block movement and construction method used for the inclined building berth comprises following steps: arranging the support mechanism and a movement mechanism between supports below the block; arranging the traction mechanism at the slope crest of the inclined building berth and using the steel wire rope to connect the traction mechanism with the pulley assemblies; starting a windlass to tighten the steel wire rope; starting a jacking mechanism to jack up the block and detaching the supports below the block; starting the windlass to loosen the steel wire rope such that the block can downwardly slide along the inclined building berth through self weight till the block is in place; and subsequently erecting a whole hull. The block movement and construction method used for the inclined building berth and the movement device thereof have following beneficial effects: the block movement device is capable of effectively moving the block from the berth; and the block movement and construction method for the inclined building berth helps effectively shorten the occupation period for the berth and increases production efficiency of the berth.

The invention discloses an extraction agent for preparing potassium nitrate with a nitric acid-potassium chloride extraction method. The extraction agent is prepared from isoamyl alcohol, n-butyl alcohol, tri-n-octylaminetri-octyl tertiary amine, n-caprylic alcohol according to a volume ratio of 1 to (0.1 to 0.5) to (3 to 10) to (1.3 to 3). The extractant provided by the invention has a good extraction effect and high selectivity for hydrochloric acid in a nitric acid-potassium chloride reaction system, the hydrochloric acid can be extracted without while not extracting nitric acid, the nitricacid serving as a raw material is saved, the purity of the nitric acid serving as a by-product is improved; the nitric acid prepared by back extraction can be directly taken as a product for selling.

An oil pressure control device controls the supply pressure of oil supplied to an oil pressure chamber of a friction element having a first engagement board 6a and a second engagement board 6b engaged with or disengaged from each other between a non-engagement state and a non-sliding engagement state via a sliding engagement state. The oil pressure control device includes: an electromagnetic valve that controls the supply pressure using a spool 44 which reciprocates according to an energizing amount; and a control part 52 that defines a first oscillatory wave part in which the energizing amount is controlled by making a first waveform with a first frequency to superimpose on a second waveform with a second frequency higher than the first frequency during a first period while the sliding engagement state and an instruction value of the supply pressure are kept constant.

The invention belongs to the technical field of chemical engineering, and particularly relates to a carbon monoxide conversion process. The process comprises the steps: (1) purification of feed gas; (2) water vaporization; (3) gas-steam mixing; (4) shift reaction; and (5) gas-liquid separation. According to the carbon monoxide conversion process disclosed by the invention, a desulfurization, dechlorination and purification process matched with the conversion process is adopted, so that the source range of feed gas is widened; an isothermal shift reaction furnace can rapidly and effectively remove reaction heat, and compared with a traditional reaction furnace, the isothermal shift reaction furnace has a good protection effect on a copper-based shift catalyst used in the furnace, widens theuse conditions of the catalyst, and has the inlet temperature of 180-280 DEG C, is suitable for synthesis gas, coke-oven gas, blast furnace gas, self-matched gas and laboratory coal gasification product gas with the CO volume content of 1%-30%, and has the carbon monoxide conversion rate reaching 90% or above.