56results about How to "Avoid hard collision" patented technology

The utility model discloses a static emulsification integrated device for M-type emulsion explosives. The static emulsification integrated device is formed by connecting and combining a water phase tank (12), an oil phase tank (13), a water phase delivery pump (14), an oil phase delivery pump (15), two mass flowmeters (16), a venturi tube (17) and a multi-stage jet flow static emulsifier (G), the multi-stage jet flow static emulsifier (G) is formed by combining an SK type static mixing pipe (1), an SK type static mixing unit (2), a first jet flow perforated plate (3), a jet flow emulsifying pipe (4), a forward spiral blade (5), a second jet flow perforated plate (6), a diaphragm type pressure gauge (7), a reverse spiral blade (8), an SV type uniform emulsion mixing pipe (9), an SV type uniform emulsion mixing unit (10) and a pressure relief pipe (11). The device disclosed by the utility model integrates SK type static mixing, multi-stage jet emulsification and SV type uniform emulsion mixing, and has the characteristics of good emulsification effect, high productivity, stable product quality, constant working pressure, high production line safety and excellent product performance index.

The invention discloses a polymer melt extrusion device with an intelligent temperature control function, and relates to the technical field of chemical fiber production equipment.The polymer melt extrusion device comprises a mounting frame, an extrusion unit, a detection unit, a spinning unit and an air belt.The mounting frame is used for mounting and fixing the extrusion unit, the extrusion unit is used for melting materials, the detection unit is used for removing melt bubbles, and the spinning unit is used for spinning the melt. The spinning unit is used for spinning and post-heating of the melt, the air bellow is used for cooling and forming of spinning, and when materials are metered through the extrusion unit and melted into the melt, bubbles in the melt are detected and removed through the detection unit, so that the overall uniformity of the melt is improved, and the spinning quality is prevented from being influenced; the spinning unit is used for conducting secondary heating after the melt is subjected to spinning forming, internal stress in fibers is eliminated, the influence on the spinning quality is avoided, and finally cooling forming is conducted through an air bellow.

The invention discloses an acid-making process using hydrogen sulfide waste gas and waste sulfuric acid, and relates to the technical field of acid-making processes, and the acid-making process specifically comprises the following steps: step 1, high-temperature reaction and gas generation, step 2, gas purification and conversion, a demister and a spraying assembly are used for removing dust, impurities and harmful substances in the gas; and step 3, sulfur trioxide absorption and sulfuric acid preparation. According to the acid-making process using the hydrogen sulfide waste gas and the waste sulfuric acid, the absorption slurry is sprayed out through the nozzle to be in countercurrent contact with the gas mixture, physical absorption and chemical reaction are combined, dust, impurities and other harmful substances in the gas mixture are effectively removed, and the gas purification efficiency is improved; the nozzles at the upper end and the lower end are used for spraying and cleaning the corrugated plate, it is ensured that the corrugated plate is always kept clean, system efficiency reduction caused by blockage or pollution of the corrugated plate is reduced, and the operation efficiency and stability of the whole system are improved.

The invention relates to the technical field of water conservancy project pipeline cleaning, in particular to a water conservancy project pipeline cleaning device which comprises a cleaning pipe head assembly, and one end of the cleaning pipe head assembly is connected with a high-pressure water supply mechanism. The end, away from the high-pressure water supply mechanism, of the cleaning pipe head assembly is detachably connected with a conical pipe fitting. High-pressure water can be supplied into the through hole through the high-pressure water supply mechanism, and the cleaning pipe head assembly rotates under the action of the high-pressure water, so that the high-pressure water can effectively impact and clean the inner wall of the pipe body; meanwhile, power of the high-pressure water body is converted into rotating force under the action of the high-pressure water body, the crushing cone continuously reciprocates through cooperation of corresponding components, impurities on the pipe wall can be rapidly collided and crushed, subsequent treatment is facilitated through the high-pressure water, meanwhile, the impurities on the pipe wall can be loosened through high-pressure water flow in advance, and the impurities are prevented from being damaged. And subsequent cleaning is facilitated.

The invention relates to the technical field of preparation of Beta molecular sieves, and discloses a method for rapidly preparing a nano Beta molecular sieve by using a microwave synthesis method, which comprises the following steps: selecting proper silicon sources (such as silicon dioxide, white carbon black and the like) and aluminum sources (such as sodium metaaluminate, aluminum sulfate and the like), adding a template agent (such as tetraethylammonium hydroxide), an alkali source (such as sodium hydroxide) and deionized water, and carrying out microwave synthesis to obtain the nano Beta molecular sieve. Uniformly mixing and stirring according to a specific molar ratio to obtain initial gel; and crystallizing the gel, wherein a conventional hydrothermal method or a microwave heating method can be adopted. And after crystallization is completed, carrying out post-treatment such as filtration, washing, drying and high-temperature calcination on the product to finally obtain the Beta molecular sieve product. According to the method for rapidly preparing the nano Beta molecular sieve by utilizing the microwave synthesis method, provided by the invention, the synthesis steps are simplified, the crystallization time is remarkably shortened, the production efficiency is improved, the particle size of the nano Beta molecular sieve is effectively controlled, and a nano-scale product with smaller particle size and more uniform distribution is obtained.

The invention discloses a passive anti-impact parallel platform which comprises a movable platform, a variable damper, a variable stiffness impact isolator, a static platform, a lower ball seat, an overshoot protector and an upper ball seat, the movable platform is connected with inertial navigation equipment, the static platform is connected with a ship body, the movable platform and the static platform are connected through the variable damper and the variable stiffness impact isolator, and the upper ball seat is connected with the overshoot protector. The lower ball seat is arranged on the surface of the static platform, and the upper ball seat is arranged on the surface of the movable platform. Through the synergistic effect of the variable dampers and the variable-stiffness impact isolators, the platform can efficiently absorb and consume impact energy, the damping force of the variable dampers is increased along with the increase of displacement of the offset balance position, the response of the movable platform is effectively weakened, the movable platform is rapidly helped to recover to the balance position, and due to the multi-stage anti-vibration design of the variable-stiffness impact isolators, the damping force of the variable dampers is reduced. Therefore, when the platform is impacted, initial impact energy can be absorbed with low rigidity, then generation of large displacement is limited with higher rigidity, and the impact resistance is further improved.

The utility model discloses a gas-liquid mixing feeding device and an alkaline wastewater treatment system, which belong to the field of wastewater treatment, and comprise a Venturi tube, a first one-way valve, a cylinder body, a piston, a connecting rod, a first oscillating rod, a second oscillating rod, a motor, a first rotating shaft, a first feeding tube, a second feeding tube, a second one-way valve and a third one-way valve, the venturi tube comprises a contraction section, a throat tube section and a diffusion section which are sequentially arranged from left to right, the diffusion section of the venturi tube is fixedly communicated with a cylinder body, and the diffusion section is provided with a first one-way valve. According to the device, carbon dioxide can be well dissolved in alkaline wastewater through premixing and pressurizing treatment, the reaction efficiency and effect are good, and the carbon dioxide is recycled through decompression treatment after treatment is finished.

This invention relates to the field of wastewater treatment, specifically a wastewater treatment device, including an electrolytic cell with an electrolysis assembly installed on it; it also includes a centrifugal sedimentation mechanism and a reciprocating stirring mechanism, which cooperate with each other; the centrifugal sedimentation mechanism includes a centrifuge cylinder with a turbine installed on it, and a rotation drive assembly installed on the bottom outer wall of the electrolytic cell; the reciprocating stirring mechanism includes a connecting frame with several rotating tubes connected to it, the bottom of which is connected to a stirring rod via a mounting base; a drive gear placed on the rotating tubes; and a rack and pinion reciprocating frame meshing with the drive gear. This invention utilizes the centrifugal sedimentation mechanism and the reciprocating stirring mechanism to achieve rapid sedimentation of impurities in wastewater, and the precipitated wastewater solution is discharged into the electrolytic cell through the top opening of the centrifuge cylinder for electrolytic sedimentation, thus facilitating rapid sedimentation of wastewater.

The invention relates to the field of chemical reaction kettles, and particularly provides a chemical reaction kettle capable of rapidly cooling in chemical production. The device comprises a reaction kettle, the reaction kettle comprises a kettle body, a reaction bin is formed in the kettle body, a cooling mechanism and a transmission mechanism are arranged, a cooling ring is arranged on the inner wall of the reaction kettle, a spiral coil is embedded in the reaction kettle, and the reaction kettle is connected with an external cooling source such as liquid nitrogen through a liquid inlet hose and a liquid outlet hose at the top; the inner side of the cooling ring is also provided with a conduction sheet made of a copper-aluminum alloy material, and the material is good in heat conductivity and low-temperature resistant, so that cold energy in the spiral coil pipe can be efficiently transferred to materials in the reaction bin, and the materials are ensured to be kept in a stable low-temperature state in the reaction process; and the magnetic rings in the transmission mechanism are matched, so that the cooling position is flexibly adjusted, and the cooling effect is optimized.

The utility model relates to the field of integrated stove accessories, and particularly discloses a volute filter screen of an integrated stove, which is fixed at an air inlet of a fan volute of the integrated stove and comprises an oil guide cover protruding from the periphery to the middle, the oil guide cover protrudes towards the outside of the fan volute of the integrated stove, and a plurality of long air guide holes are distributed in the oil guide cover along the circumferential direction. The air guide hole is bent into an arc shape in the rotating direction of the integrated cooker fan, and the air inlet face of the air guide cover is located on the edge of one side of the air guide hole and provided with a guide edge inclining in the air inlet direction. The oil fume can be guided into the fan volute of the integrated cooker in a spiral shape, noise is reduced, wind power is increased, and meanwhile collision, fusion and sedimentation of oil dirt particles are facilitated.

The utility model relates to the technical field of liquid oxygen storage, in particular to a high-pressure sealed gas storage bottle for liquid oxygen storage, which is characterized in that a fixing block is arranged on the outer surface of a tank body, and a sealing gasket and a plurality of connecting rods are arranged on the upper surface of the tank body; a notch is formed in the side surface of the valve body; the device has the beneficial effects that the sealing gasket is clamped into the hole in the upper surface of the tank body, the mounting groove in the lower surface of the valve body is aligned with the sealing gasket and clamped into the sealing gasket, then the valve body and the tank body are fixedly connected through bolts, the buffering gasket is aligned with the positioning groove formed in the fixing block and clamped into the positioning groove, and the buffering gasket can buffer collision between the tank body and other objects; when the gas storage bottle falls off, the rubber handle is matched with the connecting rod, so that the situation that the valve body directly collides with other objects, the sealing performance of the gas storage bottle is reduced, and gas leakage of the gas storage bottle is caused can be effectively avoided; and the safety is improved.

This invention relates to the field of wastewater treatment technology, and in particular to a circulating water treatment system and method for a high-density sedimentation tank. The system includes a tank body with a top plate fixedly installed on its upper surface. A mixing zone and an inclined tube sedimentation zone are respectively arranged at the front and rear of the inner side of the tank body. A guide tube is fixedly installed between the mixing zone and the inclined tube sedimentation zone. A drive shaft is installed on the inner side of the guide tube via a drive mechanism. A guide vane is fixedly installed at the lower end of the drive shaft. A defoaming disc is fixedly sleeved on the outer surface of the drive shaft, near the top of the guide tube. This invention achieves efficient defoaming and flow stabilization through rotating defoaming ribs and a lower arched surface, preventing sludge from floating. Simultaneously, it automatically switches the rotation state of the defoaming ribs based on changes in liquid level, performing synchronous defoaming during normal operation and automatic relative rotation for self-cleaning during maintenance. This significantly improves sedimentation efficiency and reduces maintenance difficulty.

The utility model provides a transmission assembly, relates to the field of couplings, and adopts the technical scheme that the transmission assembly comprises an output shaft and an input shaft, the end part of the output shaft is provided with a half coupling I, the end part of the input shaft is provided with a half coupling II, and the half coupling I can be combined with and separated from the half coupling II; the pull rod mechanism is connected with the half coupling I and can drive the half coupling I to move along the output shaft; the supporting plate is arranged on one side of the first half coupling, and the output shaft rotatably penetrates through the supporting plate; the reset spring is arranged between the supporting plate and the first half coupler, and the output shaft is sleeved with the reset spring. The power transmission device is convenient to operate, and transmission and disconnection of power can be conveniently controlled.

Provided are a linear damper capable of reducing great collision sound or impact even when a great load rapidly acts and a steering device including the linear damper. A steering device 100 includes a linear damper 120 between a rack bar 103 and a rack end 106. In the linear damper 120, a relative displacement body 140 is provided to be reciprocatably displaceable in an inner chamber forming body 121 formed in a cylindrical shape. In the inner chamber forming body 121, a first inner chamber 125a and a second inner chamber 125b are formed on both sides of a valve support portion 123 supporting first flow control valves 127 and a second flow control valve 128. An end portion of the inner chamber forming body 121 facing a rack housing 104 is provided with a bumper portion 131. The bumper portion 131 is produced in such a manner that an elastically-deformable elastic body is formed into a circular ring shape.

The utility model discloses a compound fertilizer anti-blocking device which comprises a connecting plate, a cylinder is fixedly embedded in the upper surface of the connecting plate, a bushing is fixedly connected to the inner wall of the cylinder, two groups of supporting rods are fixedly connected to the bottom surface of the connecting plate, and the bottom ends of the two groups of supporting rods are fixedly connected with a bottom plate together. According to the device, a motor, a driving gear, a secondary gear, a crushing plate and a rotating plate are arranged, through cooperation of the motor and the driving gear, the secondary gear drives a connecting rod to rotate in a bearing while rotating along with the driving gear, and then through rotation of the connecting rod, the crushing plate and the rotating plate can stir a compound fertilizer conveniently; and meanwhile, the crushed compound fertilizer can conveniently fall into the collecting box through the leakage plate, the crushing mode is easy to operate, blockage can be prevented in the later conveying process, meanwhile, the processing speed of the compound fertilizer can be increased, and current use is facilitated.

The utility model relates to the technical field of mold closing, in particular to a mold closing limiting structure which comprises a base body, first springs are arranged at the four corners of the top of the base body respectively, buffering circular ring plates are arranged at the tops of the four first springs respectively, and sliding columns are fixed to the positions, close to the two sides, of the top of the base body respectively. The device has the beneficial effects that a first spring is used for supporting a buffering circular ring plate, the buffering circular ring plate can buffer falling impact of a lifting base, a second spring can support a lower die base and can also conveniently buffer impact of the falling upper and lower die bases, and a buffering assembly is used for buffering upper and lower mechanical stamping again; abrasion and aging of the lower die holder can be prevented as much as possible, and the production quality of products can be guaranteed not to be affected.

This application discloses a high-precision floating reset measuring device end, relating to the field of measuring device technology. It includes an elastic component, a tool holder, a measuring head, and a measuring rod. The tool holder has an inner cavity for mounting the measuring rod, with a horizontal sliding gap between the measuring rod and the cavity. The measuring head integrates a conical depth measuring component and an inner hole measuring component. A ball-and-socket positioning structure is provided between the bottom of the first elastic structure and the top of the second elastic structure. The ball-and-socket positioning structure includes a ball-and-socket groove and a ball-head pin for coaxial reset of the measuring head. The technical advantage of this application is that by setting the measuring head with the measuring rod to a horizontally floating state relative to the tool holder, even when the cylindrical workpiece and the tool holder are not coaxially aligned, the measuring head can complete data acquisition while avoiding hard collisions through horizontal displacement during the inspection of cylindrical workpieces. The ball-and-socket positioning structure, with the help of the elastic structure, completes the coaxial reset of the measuring head after floating detection when the measurement ends.

The utility model discloses an automatic gunpowder discharging device which comprises a transfer trolley, a discharging barrel and a lifting mechanism, the discharging barrel comprises a barrel body, a linear bearing, a cone valve rod and a cone valve, and a discharging hole is formed in a bottom plate of the transfer trolley; a feeding hole is formed in the top of the barrel body; a discharging hole is formed in the bottom of the barrel body; the barrel body is placed and installed in the transfer trolley, and the discharging hole corresponds to the discharging hole in position. The linear bearing is vertically mounted at the top of the barrel body; the cone valve rod is arranged in the linear bearing in a penetrating mode. The cone valve is installed at the bottom end of the cone valve rod and corresponds to the discharging hole in position. And the lifting mechanism is clamped with the top end part of the cone valve rod. The device is simple in structure, convenient to operate and maintain and flexible to use, improves the automation level of a production line, improves the safety level of the production line, and is suitable for the field of civil explosive production.

This invention discloses a plasma cleaning machine, specifically relating to the technical field of plasma cleaning machines. It includes a base and a static voltage detection and adjustment device. The static voltage detection and adjustment device includes a support ring, with a limiting rib ring at the top and several static voltage sensors sleeved on the outer side of the limiting rib ring. This invention uses a positive and negative voltage adjustment mesh plate to neutralize a portion of the positive ions, resulting in a greater quantity of negative ions than positive ions. The excess negative ions neutralize the positive charge on the product surface, and vice versa. This automatic adjustment ensures that the static voltage on the product surface remains zero, preventing damage to electronic components from accumulated voltage and guaranteeing product quality. It also has the function of cleaning different areas of the workpiece. The positive and negative voltage adjustment mesh plate and plasma generator can be placed close to the workpiece, facilitating plasma collision with the object surface and dislodging contaminants, ensuring effective cleaning.

The invention discloses a high-precision automatic feeding splitting machine, and belongs to the technical field of in-vitro detection kit reagent strip processing. The high-precision automatic feeding splitting machine comprises an electric control cabinet, and the top of the electric control cabinet is fixedly connected with a top plate of the electric control cabinet; a top plate of the electric control cabinet is provided with a first servo motor, a cutter assembly, an electric cylinder, a clamping jaw assembly, a stock bin assembly, a limiting guide mechanism, a clamping strip, a to-be-cut area and a waste discharge port, it can be guaranteed that the strip cutting form and position precision is high, the angle deviation of the vertical face of a notch of the clamping strip is smaller than 0.05 degree, and a finished product without a parallelogram in the section is obtained; in the cutting process of the reagent strip, the cutting edge completely cuts off the adhesive sticker layer, excessive glue caused by stretching the adhesive layer does not exist, the problem that the excessive glue falls off and adheres to the cutter face, and the glue needs to be removed frequently is solved, the cutter is free of maintenance, has the self-cutting edge function, and can be used for cutting the reagent strip in a long card cutting working period, so that the service life of the cutter is prolonged, and the service life of the cutter is prolonged. And a new knife is not needed.

The invention discloses a camellia seed crushing device for camellia seed oil production, and relates to the field of crushing or crushing, the camellia seed crushing device comprises an upper supporting plate, the upper supporting plate and a supporting plate are fixed together through a stand column, and a supporting ring is installed between the upper supporting plate and the supporting plate; the driven shaft is installed in the supporting ring, a cam groove is formed in the side face of the driven shaft, an outer shaft is fixedly installed at the bottom of the driven shaft, an inner shaft distributed in the axial direction is rotatably installed at the axis position of the driven shaft and the outer shaft, and the bottoms of the inner shaft and the outer shaft are both inserted into the smashing box; the first blade is fixed at the bottom of the outer shaft; the second blade is fixed at the bottom of the inner shaft, when the inner shaft rotates, the second blade can drive the driven shaft, the outer shaft and the inner shaft to rotate together, the outer shaft and the inner shaft respectively drive the first blade and the second blade to rotate to cut materials, and the outer shaft can move up and down in the crushing box and can drive the materials to move up and down while cutting and crushing the materials. The material rolling is realized, the material crushing effect is improved, and the longitudinal cutting of the material is realized.

The invention relates to the technical field of aircraft assembly, and particularly discloses a transfer robot which comprises a movable platform, a position adjusting mechanism, an angle adjusting mechanism and a moving mechanism, the movable platform is connected with a position adjusting assembly, the position adjusting assembly can drive the movable platform to translate on a mounting seat, and the angle adjusting mechanism is connected with the mounting seat. The angle adjusting mechanism is used for adjusting the inclination angle of the mounting base, and trundles are arranged at the bottom of a shell of the moving mechanism. The carrying robot is small in size and high in integration degree, objects to be installed can be conveniently carried in a narrow aircraft cabin, time and labor are saved, sound insulation cotton, circuits, skin and the like in the aircraft cabin cannot be collided, and the quality and safety of an aircraft are prevented from being affected. And the position and the posture of the to-be-mounted article can be finely adjusted through the position adjusting mechanism and the angle adjusting mechanism of the carrying robot, so that the to-be-mounted article is accurately butted with a mounting positioning hole in an aircraft cabin.

The tool car with the anti-collision function comprises a car body, universal wheels, a storage cavity and a handle frame, the universal wheels are fixedly installed at the four corners of the bottom of the car body respectively, the handle frame is fixedly installed on one side of the upper portion of the car body, the storage cavity is formed in the upper surface of the car body, installation cavities are formed in the periphery of the car body, and the handle frame is fixedly installed in the installation cavities. A plurality of supporting shafts are uniformly and fixedly mounted in the mounting cavity, an anti-collision barrel is detachably and rotationally mounted on each supporting shaft, one half of each anti-collision barrel is located in the mounting cavity, and the other half of each anti-collision barrel is located outside the vehicle body; by means of the overall arrangement, hard collision and hard friction between the periphery of a vehicle body and external objects can be prevented in the using process, so that the vehicle body and the external objects are effectively protected, and unnecessary damage is prevented; and meanwhile, the anti-collision barrel can be independently replaced in the later period, and more convenience and flexibility are achieved.

The utility model discloses an M-type emulsion explosive jet emulsification device which is formed by combining an SK-type static mixing pipe (1), an SK-type static mixing unit (2), a first jet porous plate (3), a jet emulsification pipe (4), a forward helical blade (5), a second jet porous plate (6), a diaphragm type pressure gauge (7), a reverse helical blade (8), an SV-type uniform emulsion mixing pipe (9), an SV-type uniform emulsion mixing unit (10) and a pressure relief pipe (11). The jet flow emulsification pipe (4) is divided into two sections, the first jet flow perforated plate (3) and the second jet flow perforated plate (6) are respectively positioned at inlets of all the sections of the jet flow emulsification pipe (4), and the forward spiral blade (5) and the reverse spiral blade (8) are respectively arranged in outlets of all the sections of the jet flow emulsification pipe (4). The device integrates forward mixing, reverse mixing, jet flow shearing and impact collision, and has the characteristics of constant working pressure, stable emulsifying quality, high production line safety, good emulsifying effect and excellent product performance index.

The invention relates to an online grinding machine, which solves the problems of poor grinding precision, long grinding time efficiency, low grinding efficiency, high grinding work intensity and the like in the prior art, and adopts the technical scheme that the online grinding machine comprises a first motor and a grinding wheel arranged at the output end of the first motor, and is characterized by further comprising a base and a three-dimensional adjusting mechanism arranged on the base, the first motor is arranged on the three-dimensional adjusting mechanism, the three-dimensional adjusting mechanism is used for adjusting the three-dimensional position of the first motor to adjust the grinding surface of the grinding wheel, the three-dimensional adjusting mechanism comprises an X-direction adjusting mechanism, a Y-direction adjusting mechanism and a Z-direction adjusting mechanism, and the grinding surface of the grinding wheel can be adjusted by adjusting at least one of the X-direction adjusting mechanism, the Y-direction adjusting mechanism and the Z-direction adjusting mechanism. The position of the grinding surface of the grinding wheel is adjusted. The grinding machine has the advantages that the position of the grinding face of the grinding wheel is accurate through the three-dimensional adjusting mechanism, the purpose of accurate grinding is achieved, the three-dimensional adjusting mechanism is high in adjusting precision and convenient to adjust, the grinding efficiency can be greatly improved, and the grinding strength is reduced.

The invention relates to a high-thermal-conductivity metal-based diamond composite grinding disc, and belongs to the technical field of diamond grinding discs, the high-thermal-conductivity metal-based diamond composite grinding disc comprises a grinding disc assembly and a diamond grinding block arranged on the bottom side of the grinding disc assembly, and the diamond grinding block comprises a grinding block body and a cavity formed in the grinding block body; a blowing structure which extends to the outside of the grinding block main body and is used for rapidly guiding out heat is arranged in the grinding block main body, and an abrasion monitoring structure and a lubricating structure which are in linkage operation with the blowing structure are arranged on one side of the outside of the grinding block main body. The high-thermal-conductivity metal-based diamond composite grinding disc has the advantages that heat conduction and cleaning are efficiently linked, abrasion is accurately monitored and alarmed, the abrasion state is accurately fed back, lubrication monitoring is synchronously linked, and self-adaptive buffering and noise reduction are achieved; the effects of improving the grinding precision, relieving thermal deformation of parts, prolonging the service life of core parts, reducing the maintenance cost and enhancing the running reliability and stability of equipment are achieved.

The application discloses a ladle splash-proof slag device, which is arranged on a ladle car used for placing a ladle, the bottom of the ladle is provided with a sliding plate mechanism, and an oil cylinder bracket is arranged on the sliding plate mechanism; the device comprises a first protection mechanism and a second protection mechanism; the first protection mechanism comprises a fixed protection plate which is fixed to the upper surface of the ladle car; the second protection mechanism comprises a side protection plate and a fixed seat; the fixed seat is fixedly arranged on the oil cylinder bracket, the side protection plate is arranged on the fixed seat through a rotating shaft and can rotate relative to the fixed seat, and the axis direction of the rotating shaft is perpendicular to the loading direction of the oil cylinder; the side protection plate is located at the front of the oil cylinder bracket and is used for blocking molten steel rebounding from the ground of the ladle car. The device can save manpower while blocking the steel slag and the molten steel, and can also meet the use requirements of a robot system.

The utility model discloses a bridge drainage cleaning device which comprises a water spraying sleeve, a water supply pipe and a connecting rod assembly, the water spraying sleeve is arranged at the bottom of the water supply pipe, the connecting rod assembly is rotationally connected with the water spraying sleeve, and the connecting rod assembly is connected with the water supply pipe in a sliding mode. The utility model belongs to the technical field of bridge drainage cleaning. The working state of the water spraying sleeve is controlled through the connecting rod assembly, when the small support ring is arranged at the position of a clamping baffle of the water supply pipe, a side wall hole of the water supply pipe is sealed by a positioning inclined table of the water spraying sleeve, the straight spraying head is communicated with a bottom inclined opening of the water supply pipe, and direct water flow is sprayed out to flush a plug; when the small support ring moves to the support ring check ring, the inner wall of the pipeline extrudes a long rod of the connecting rod assembly, so that the water spraying sleeve is driven to move upwards, the sealing piece is rotated to seal a bottom bevel opening of the water supply pipe, a side wall hole of the water supply pipe is communicated with a side spraying chamber of the water spraying sleeve, and a side spraying water outlet sprays water flow and drives the water spraying sleeve to rotate to clean the inner wall of the bridge drainage pipeline.

The present application relates to a kind of preparation method of metallocene polyethylene of wide molecular weight distribution, belong to olefin polymerization catalysis technical field.The preparation method of metallocene polyethylene of wide molecular weight distribution provided by the present application includes the following steps: (1) mixed metallocene catalyst, organic aluminum compound and mixed solvent, heating, and into ethylene is carried out polymerization reaction;The mixed solvent includes organic solvent A and organic solvent B, the organic solvent A is inert alkane or aromatic hydrocarbon, and the organic solvent B is the organic solvent containing polar functional group;(2) after reaction, quenching agent is added to terminate the reaction, washing, filtration, drying, it is finished.The present application uses mixed solvent system, and the use amount and the ratio of two components of mixed solvent are adjusted to realize the adjustment of metallocene polyethylene molecular weight distribution, greatly reduce the requirement of complex bifunctional catalyst, catalyst cost is low, polymerization process is simple, product performance is flexible, and application prospect is wide.

The invention discloses a soil grinding device, and relates to the technical field of grinding equipment, the soil grinding device comprises a ball mill main body of a cylindrical cavity structure, and one side of the ball mill main body is fixedly connected with a grinding cylinder used for loading a grinding medium and a material; the outer wall of the side, close to the milling cylinder, of the ball mill body is fixedly connected with a transmission device used for driving a cylinder body of the ball mill body to rotate, and the outer walls of the two ends of the milling cylinder are provided with feeding devices used for evenly feeding materials into the ball mill body; the inner wall of the grinding cylinder is fixedly connected with an inner lining plate used for protecting the grinding cylinder from being abraded by grinding media and materials, a circulating oscillation mechanism is arranged in the side, close to the transmission device, of the grinding cylinder, and a track turning mechanism is arranged on the outer wall of the side, close to the grinding cylinder, of the inner lining plate. The circulating oscillation mechanism enables materials to flow and be distributed periodically in the cylinder body through periodic oscillation movement, so that the materials are ground more uniformly.