38results about How to "Increase insertion depth" patented technology

The invention discloses a seamless solid metal calcium cored wire for steelmaking and deoxidation and a preparation method thereof. The seamless solid metal calcium cored wire consists of an outer-layer steel tube, a middle coating layer and an inner core, wherein the inner core is a solid metal calcium (pure calcium) wire. The seamless solid metal calcium cored wire disclosed by the utility model has the beneficial effects that vapor pressure and the gasification rate of metal calcium can be reduced, the depth of the seamless solid metal calcium cored wire inserted in molten steel is increased, the boiling of the molten steel is reduced, the time that the metal calcium is adsorbed by metal is reduced, the boiling phenomenon of the existing seamed solid calcium cored wire inserted in the molten steel is overcome, the phenomenon that the wire feeding is affected due to hollow powder calcium cored wire and non-uniform core powder weigh is reduced, and the bring-in of harmful elements (S, P, C and Si) in the powder calcium cored wire is avoided, so that the yield and the stability of metal calcium are greatly improved.

The invention discloses a smelting method for complete-flow low-oxygen-level producing of IF steel, and belongs to the technical field of steel smelting. The method comprises the steps that firstly, after converter steel smelting is finished, deslagging is carried out, 10 to 15 tons of slag is left in a converter, 50 to 100 kg of coke powder is added for removing oxygen in the slag, and the slag-splashing furnace protection operation is carried out; secondly, converter charging is carried out; thirdly, converter main blowing is carried out; fourthly, after converter main blowing is finished, through an auxiliary gun, the molten steel temperature and the carton content are measured, and according to the measuring value, auxiliary oxygen blowing amount is controlled; fifthly, after auxiliaryblowing is finished, before tapping, strong bottom blowing is carried out for 30 seconds; sixthly, converter tapping is carried out; seventhly, molten steel enters in the RH procedure; and eighthly,after a steel ladle is jacked, a vacuum pump is started for vacuum pumping decarburization. The converter tapping molten steel peroxidation degree is reduced, the steel ladle slag oxidation is reduced, the generation amount of deoxidation type inclusions Al2O3 can be reduced, the molten steel cleanliness level is improved, the cost is reduced, and the obvious economic benefits are achieved.

A catalyst sampler is prepared as erecting propeller at top end of sampling tube, setting conical head at bottom end, arranging a sampling hole at bottom portion of sampling tube, setting a ring tube being able to move up and down in said bottom portion, setting bottom end of sample guide tube to be near to top of sampling hole, connecting top end of sample guide tube to flexible tube then connecting top end of sample guide tube to collector of sample vacuum system.

The invention discloses a mechanical agitation desulphurization method for molten iron desulphurization pretreatment. The desulphurization method includes five steps including prior sample taking for temperature measurement, prior slag scrabbling, desulfurizing agent adding and agitation, later slag scrabbling and later sample taking for temperature measurement. In the steps of desulfurizing agent adding and agitation, an agitation device is inserted into a molten iron tank containing molten iron, and is composed of an agitator and a guide plate, and the guide plate and the agitator are both vertically instead into the molten iron; and the vertical distance between the bottom of the guide plate and the top of a blade of the agitator is H. Compared with the rotating speed of a conversional KR method, the rotating speed of the agitator is decreased by 10% to 20%; and the insertion depth of the agitator is increased by 10% to 30% compared with the insertion depth of the conversional KR method.

An extension for a catheter assembly may include a distal end and a proximal end. The distal end may include one or more cantilever arms and an insertion feature spaced apart from the cantilever arms. The insertion feature may be configured to insert into a lumen of a catheter adapter to provide a fluid connection between the catheter adapter and the extension. The one or more cantilever arms may be configured to engage in a snap-fit with the catheter adapter. The proximal end of the extension may include a female luer fitting.

The present invention relates to an inner cone type temperature equalizing target heat pipe blackbody and belongs to the radiation temperature measurement technical field. According to the device, a blackbody cavity (7) and a heat pipe (5) are designed integrally, so that heat conduction loss between the heat pipe and the blackbody cavity can be decreased, and therefore, heating efficiency and a temperature rise rate can be improved; an inner cone type temperature equalizing target (4) is arranged at the bottom of the blackbody cavity (7), and a distance between a standard thermocouple and the surface of the target is made as small as possible, so that the accuracy of the temperature of the surface of the target can be ensured; the inner cone type temperature equalizing target can assist in increasing the insertion depth of the standard thermocouple or a platinum resistor, so that heat conduction error can be decreased; and the heat pipe (5) adopts three-section heating, and the temperature sensor (1) of each section of the heat pipe (5) is installed on the external wall surface of the heat pipe, and two sections of the heat pipe wrap the exterior of the cylinder of the heat pipe, and the third section is a heating disc and is arranged at the bottom of the heat pipe, and the temperature of the three sections is adjusted respectively, so that the uniformity of the axial temperature field of the blackbody cavity can be guaranteed. Compared with the prior art, the inner cone type temperature equalizing target heat pipe blackbody of the invention has the advantages of high temperature uniformity and high accuracy.

The invention discloses deep-layer fertilization equipment. The deep-layer fertilization equipment comprises a fertilizer storage barrel, a roller and a manipulation handle, wherein a fertilizer inlet is formed in the fertilizer storage barrel; the fertilizer storage barrel is fixedly connected with the manipulation handle; the fertilizer storage barrel and the roller are transversely arranged; the fertilizer storage barrel is arranged in a filling cavity of the roller; the fertilizer storage barrel is tightly fitted with the roller; a rotary central shaft of the roller is the fertilizer storage barrel; a first through hole is formed in the lower part of the fertilizer storage barrel; a fertilization inserting column is arranged on a rotary surface of the roller; a third through hole is formed in the fertilization inserting column; one end of the third through hole is communicated with a second through hole in the rotary surface of the roller; the other end of the third through hole is located at the tail end of the fertilization inserting column; the second through hole is discontinuously communicated with the first through hole when the roller rotates. The deep-layer fertilization equipment provided by the invention is convenient to operate and time and labor are saved; the deep-layer fertilization equipment can be effectively used for applying fertilizers into a deep part of soil, so that wastes of the fertilizers can be reduced; crops can sufficiently absorb and utilize the fertilizers, and root systems of the crops are accelerated to grow toward deep layers, so that the root systems are enhanced and lodging is prevented from occurring.

The invention discloses a rice transplanter assisted straw turnover device which comprises a bracket, a straw pressing track and a plurality of straw pressing fluted discs, wherein the straw pressing track is arranged on two rollers in a sleeving manner; a plurality of rake teeth are distributed on the straw pressing track; the rollers are fixed on a roller shaft; two ends of the roller shaft are respectively fixed on the bracket through bearings; the straw pressing fluted discs are arranged on a connecting shaft in a sleeving manner; two ends of the connecting shaft are respectively fixed on the bracket; a gear shaft is fixed on the bracket and meshed with the straw pressing fluted discs; and two power mechanisms are fixed on the bracket, wherein one power mechanism is used for driving the straw pressing track to work, pressing straws or weeds on the ground into a shallow underground layer and carding the straws or weeds into a transverse direction, and the other power mechanism is used for driving the straw pressing fluted discs to rotate and further pressing the straws or weeds in the shallow underground layer into a deeper underground position. The device disclosed by the invention is matched with a rice transplanter, so that the straw turnover operation can be completed during rice transplanting. Moreover, soil between two adjacent straw pressing fluted discs is extruded and arched into ridges, rice seedlings can be inserted into the ridges by the rice transplanter, and the condition that rice seedling floating and lodging occur can be avoided.

The invention discloses a low-cotton-droppings processing technology for a cotton spinning combing machine. The technology comprises the steps: on a pre-drawing frame of a combing preparation procedure, increasing the number of cotton slivers fed, and increasing total draft multiple and rear area draft multiple; on a ribbon lap machine of the combing preparation procedure, increasing the number of cotton slivers combined, and increasing the total draft multiple; on the combing machine of a combing procedure, determining the cotton roll fixed quantity and cotton feeding length of the combing machine; adopting a forward cotton feeding manner, and forwards moving a cotton feeding roller; improving a clamping plate transmission system of the combing machine; reducing cotton droppings spacing; reducing the total tooth number of a cylinder and increasing carding spacing; reducing the carding strength and insertion depth of a top comb. According to the technology, the probability that fibers are grabbed by pin teeth of the cylinder during carding is lowered, and the aim of low cotton droppings during combing is realized, so that the cotton droppings ratio of combing is lowered to 4-8%, the requirements of semi-combed yarn, of which the combed yarn is relatively thick and the quality requirements are relatively low, on low cotton droppings are met, and the aims of reducing cotton consumption cost and increasing spinning economic benefit are achieved.

A spile device of a spile machine relates to the technical field of spile machines. A transmission operating mechanism transmits power to a lifting mechanism under hydraulic control, the lifting mechanism drives the spile device to rotate, and a drain board is disposed in a steel casing which is disposed inside the spile device and driven by a winch. A left verticality adjusting mechanism, a right verticality adjusting mechanism, a pay-off and take-up type line puller and a detachable support device. The spile device has the advantages that movement is fast, action is flexible, driving depth is large, ground adaptability is high, operation is convenient, power is high and driving speed is high.

The invention discloses a soft-soil consolidation drainage device. The device comprises a vertically arranged screw pile, and a rotary shaft coaxial with the screw pile is installed in the screw pileand driven by a motor; the rotary shaft is of a hollow structure, a main hydraulic pipe and a main drainage pipe penetrate through the inside of a hollow structure of the rotary shaft, the main drainage pipe is connected with a vacuum pump, and the main hydraulic pipe is connected with a hydraulic pump; a plurality of vacuum preloading drainage pipes wind the outer side of the rotary shaft; the vacuum preloading drainage pipes horizontally penetrate out of the screw pile, the tops of the vacuum preloading drainage pipes penetrate out of the side wall of the rotary shaft, and a center hydraulicpipe is connected with the main hydraulic pipe; a drainage sleeve is connected with the main drainage pipe, and the bottom ends of the vacuum preloading drainage pipes are free ends. The device has the advantages that the installing period is short, the adaptability is high, the covering area is large, and the surrounding pressure difference of the vacuum preloading drainage pipes is small; deformation cannot be easily caused, the drainage consolidation effect is good, the consolidation drainage efficiency is good, the drainage effect is good, and the device can be recycled.

The invention provides a column leveling device and a column leveling method. The device comprises: a support beam, the support beam being provided with a connecting structure; a leveling wedge, the leveling wedge having relatively wide and narrow sides, the wide side being disposed toward the support beam, the leveling wedge being formed with two opposite chutes, and the chutes being formed fromthe wide side to the narrow side; and a regulating assembly comprising two connecting rods and a distance adjusting rod for pushing and pulling the wide side of the leveling wedge, the connecting rodsbeing connected to the support beam and disposed in the chutes in a sliding manner, and the distance adjusting rod being mounted to the support beam. The device and the method solve the problem of low conventional leveling efficiency of supporting columns in municipal road construction projects.

The invention discloses a cement clinker-magnesium particle cored wire and its application and production process of steel for large heat input welding. The cored wire includes an outer layer and a cored core; the outer layer is low-carbon steel with a thickness of 0.5-1.0 mm; The core is slow-release passivated magnesium particles, the core includes slow-release agent and passivated magnesium particles, the slow-release agent is cement clinker, the slow-release agent accounts for 5-90% of the content of the core, and the passivated magnesium particles account for the content of the core 10-95% of that. Application of the cored wire of the present invention in preparing steel for high heat input welding. The invention feeds the slow-release passivated magnesium grain cored wire with cement clinker as the slow-release agent to the molten steel, the absorption rate of Mg is stable, the effect and utilization rate of Mg are high, the inclusions are dispersed and abundant, and the inclusions containing Mg up to 80% or more. Adopting the present invention has the advantages of simple control, low production cost, and industrialized large-scale production of steel for welding with large heat input.

The invention discloses a prying-off type bottle cap and a prying-off type bottle. The bottle cap comprises an outer cap, an inner sleeve, an outer sleeve, an inner cap assembly and an inner plug assembly, wherein the inner sleeve is detachably connected with the outer cap, the outer cap is sleeved at the top end of the inner cap, and a prying hole is formed in the side wall of the top end of theinner sleeve; the inner cap assembly comprises an upper cap body, a lower connecting sleeve and a limiting structure; the upper cap body and the lower connecting sleeve are fixedly connected and are arranged in the outer cap together; the lower connecting sleeve is inserted into the inner sleeve and is coaxial with the inner sleeve; the limiting structure is fixed on the bottom surface of the upper cap body and is positioned in the lower connecting sleeve; a plurality of fixing structures fixed to the bottle opening are arranged on the inner wall of the lower connecting sleeve; the inner plugassembly comprises an upper inner plug and a lower inner plug; and the top end of the upper inner plug is clamped in the limiting structure, and the lower inner plug is plugged in a bottle neck and forms a sealing structure of the bottle neck with the upper inner plug. The whole bottle is damaged in the prying process, lawbreakers cannot use the bottle again, fake wine is avoided from the source,and therefore the anti-counterfeiting effect of the bottle cap is improved.