97results about How to "Smooth inflow" patented technology

The invention discloses a specific crystallizer casting powder for sulphur free-cutting steel and production method thereof, mass percents of chemical components thereof are as follows: 29-35% of CaO, 25-30% of Sio2, 2-5% of MgO, 3-5% of Al2O3, 2-6% of Fe2O3, 5-11% of NaO?, 0-2% of Li2O, 5-9% of CaF2?, 0-5% of MnO, 0.5-2.0% of Al grey, 0-2% of B2O3, 5-11% of solid carbon, and allowance is building material adhesive and water. The sulphur free-cutting steel has low high-temperature strength and high crack sensitivity, and the casting powder should have properly high basicity. Basicity of a slag is improved, so that diffusion velocity is accelerated, and absorption of impurities in molten steel is benefited. So, improvement of basicity is an effective means for improving absorption of the impurities and control of surface longitudinal crack.

The invention provides a crystallizer covering slag for continuously casting high-manganese high-aluminum steel and preparation method of the crystallizer covering slag. The covering slag is prepared from the following components in parts by weight: 20-38 parts of CaO, 20-35 parts of Al2O3, 5-18 parts of SiO2, 10-22 parts of BaO, 2-7 parts of Li2O, 5-12 parts of F<->, 1-4 parts of MgO, 2-8 parts of C and Fe2O3 which is less than or equal to 2 parts. According to the preparation method disclosed by the invention, wollastonite, limestone, quartz sand, fluorite, bauxite, barium carbonate, magnesia, soda, lithium carbonate and carbonaceous materials are used as raw materials, and the covering slag is prepared through the following steps of: calculating of consumption, melting, smashing, fine grinding, drying and granulation. The covering slag disclosed by the invention has the characteristics of being low in reactivity and good in property stability, the lubrication and the thermal transmission of casting blanks can be effectively coordinated and controlled, the smooth performing of the continuous casting process of the high-manganese high-aluminum steel can be guaranteed, high-manganese high-aluminum steel continuous casting blanks with excellent surface quality are cast, and multi-heat continuous casting can be realized.

The invention discloses a multi-overlaid-layer gating system and technology for casting. The multi-overlaid-layer gating system is characterized in that the multi-overlaid-layer gating system comprises multiple layers which are overlaid, riser channels and spures are arranged in the gating system, and in each layer of the gating system, the upper end and the lower end of the riser channel and the upper end and the lower end of the spure are provided with risers and pouring gates respectively; a riser cup and a pouring gate cup are fastened to the riser and the pouring gate on the top layer of the gating system respectively; the riser and the pouring gate of the upper end of the next layer of the gating system are tightly sleeved with the riser and the pouring gate of the lower end of each upper layer of the gating system respectively; the riser and the pouring gate of the bottom layer of the gating system are sealed, cross gates are arranged between the riser channels and the spures, inner pouring gates are arranged on one sides inside the riser channels, the cross gates are communicated with the inner pouring gates, and the inner pouring gates are communicated with a product sand mold cavity. By means of the multi-overlaid-layer gating system, a multi-layer product sand mold cavity is cast, casting production efficiency is improved, casting time is shortened, the molten iron content in multi-overlaid-layer casting is guaranteed, temperature balance is guaranteed, and casting product quality is guaranteed.

The invention discloses a feed feeding and mixing device with a function of screening impurities for the pig breeding industry. The feed feeding and mixing device comprises a bottom plate; the top ofthe bottom plate is fixedly connected with a mixing box; the four corners of the bottom of the bottom plate are separately and fixedly connected with a mixing structure. The feed feeding and mixing device is provided with the bottom plate, the mixing box, the moving structures, supporting legs, springs, roller wheels, a first transmission case, a second transmission case, a feed chute, a support pillar, a first motor, a stirring column, stirring blades, a screen box, a sieve plate, blanking pipes, a second motor, a cam, a driving plate, a sliding chute, reset spring, a transmission column, a discharge pipe, a sealing cover, a regulating valve, a guide block, a push rod, an anti-slip sleeve, an open slot, through holes and a material limiting port which are cooperatively used, thus improving the safety and quality of pork and enhancing the practicality; the feed feeding and mixing device with the function of screening impurities for the pig breeding industry has the advantage of screening the impurities of feed, so that the practicality of the mixing device is improved.

The invention discloses a bottom gating system with an ingate in circular cross section, which belongs to the technical field of casting, the existing gating system is not applicable to gating large casts, high in rejection rate and easy to lead the casts to produce stress and porosity so as to cause the high rejection rate of the casts. The bottom gating system comprises a mold cavity and a main sprue, a runner, a sub-sprue and a sub-runner in sequential connection, and is characterized in that the sub-runner is connected to the bottom part of the mold cavity via the ingate in the circular cross section. The bottom gating system can reduce the volume of a sand box, reduce the consumption of molding sand and further greatly reduce the production cost by adopting the ingate in the circular cross section; the bottom gating system can further lead molten metal to flow into the mold cavity smoothly, effectively prevent oxidizing slag which is produced by turbulent flow of the molten metal from being entangled into the mold cavity, prevent the production of slag inclusion in the cast, and further improve the quality of the cast; as molten iron enters into the mold cavity through the ingate in the circular cross section, the bottom gating system is difficult to produce temperature difference, and can reduce the production of the porosity and ensure the quality of the cast; and the operation is convenient.

The invention belongs to the field of semiconductor thin film deposition equipment and in particular relates to a gas mixing and distributing structure of double-chamber or multi-chamber thin film deposition equipment. The gas mixing and distributing structure comprises a gas mixing chamber, gas inlet pipelines, at least two gas outlet pipelines and a gas intake baffle, wherein the bottom surface of the gas mixing chamber is connected with the first gas inlet pipeline and the second gas inlet pipeline, the gas intake baffle which is arranged on the bottom surface of the gas mixing chamber is arranged above the first gas inlet pipeline and the second gas inlet pipeline, and the inlet of the first gas inlet pipeline and the inlet of the second gas inlet pipeline are respectively positioned below the gas intake baffle; and at least two gas outlet pipelines are symmetrically connected to two opposite side surfaces of the gas mixing chamber. According to the gas mixing and distributing structure, various process gases can be sufficiently mixed, gases among chambers are uniformly distributed, and therefore a same process state can be kept among the chambers; and in addition, the gas mixing and distributing structure is simple in structure, low in cost, small in size and convenient to install and maintain.

Overhead-type excitation displacement velocity force value relation curve detection equipment comprises a base (1), a stand column (2), a base plate (3) and a crank mechanism (4) and further comprises a concentric shaft rotation angle difference adjustment mechanism (5) and a gap eliminating mechanism (6), wherein the base plate (3) is connected with a test shaft (7) in a sliding mode, the lower end of the test shaft (7) is connected with a force sensor (8) and an upper clamp (9), the crank mechanism (4), the concentric shaft rotation angle difference adjustment mechanism (5) and the gap eliminating mechanism (6) are all connected to the base plate (3), the gap eliminating mechanism (6) is connected with the crank mechanism (4) which is in transmission connection with the test shaft (7), the crank mechanism (4) comprises an automatic counter weight assembly, and the concentric shaft rotation angle difference adjustment mechanism (5) is connected with the automatic counter weight assembly. Compared with the prior art, the equipment has the advantages that the crank mechanism is in the overhead type, the angle difference can be adjusted in real time, detection efficiency is high, detection precision is good and use flexibility is good.

The invention discloses a civil construction engineering construction waste treating device. A first smashing box is fixedly connected to the left side of the top of a workbench. According to the civil construction engineering construction waste treating device disclosed by the invention, the workbench, the first smashing box, a transmission box, a feeding groove, a first motor, a first rotating column, a first gear, a second rotating column, a second gear, a smashing wheel, a flow limiting block, a blanking pipe, a second smashing box, a sliding block, a sliding groove, a stirring and smashing device, a third motor, a stirring rod, a smashing cutting blade, a second motor, a transmission disk, a first transmission frame, a transmission pin, a transmission column, a spring, a second transmission frame, a sliding pin, a transmission rod, a discharging pipe, a sealing cover, an H-shaped supporting frame, a guiding block and a return spring are matched and used; thus, the problem that anexisting smashing device cannot completely smash waste when smashing the waste is solved. The civil construction engineering construction waste treating device has the advantage of completeness in smashing, the practicability of the smashing device is enhanced, and the smashing efficiency of the smashing device is enhanced.

The invention relates to a vibrating medicine storage unit for a dry powder inhalation dosing device and belongs to the field of inhalation type dosing instruments. A turning cover, a spring, a vibration gear, a turntable and an external medicine drum arranged on a flow channel lower component form the vibrating medicine storage unit for the dry powder inhalation dosing device. While impact vibration is performed on a medicine powder storage container of the medicine storage unit, a second vibrating component, namely an internal medicine drum, which can synchronously freely vibrate, is also arranged in the medicine powder storage container, so as to perform compound vibration on medicine powder in the medicine powder storage container, so that the metering accuracy of the medicine powder dose provided by the medicine storage unit in the process of medicine dosing by the whole dry powder inhalation dosing device each time is guaranteed better, the mechanical structure design change workload needed for the variation of varieties of filling medicine powder can also be reduced, and the good adaptability of the dry powder inhalation dosing device for the powder medicine varieties in a large range is improved. The vibrating medicine storage unit can be widely suitable for the fields of design and manufacture of dry powder inhalation dosing devices of various specifications.

The invention provides a preparation method of a metal lithium negative electrode, the metal lithium negative electrode, a battery and an application, wherein the preparation method of the metal lithium negative electrode comprises the steps of depositing a carbon fluoride film layer on the surface of a metal lithium sheet by utilizing a direct-current pulse plasma vapor deposition method, etc. According to the preparation method of the metal lithium negative electrode, the protective layer is formed on the surface of the metal lithium sheet to form the stable metal lithium negative electrode,the lithium negative electrode does not easily generate dendrites in the charging and discharging process, the potential safety hazards are avoided, and the metal lithium negative electrode has the excellent cycle performance.

The invention provides a tube with grooves formed in an inner surface thereof, a method of producing the tube and a grooved plug. The tube having grooves formed in its inner surface. The grooves are formed in a reverse trapezoidal cross section, and the corners at the root of each groove have a circular arc shape and the ratio (R/delta) of the radius R (mm) of each corner to the width delta (mm) of the groove is not less than 0.10 and not more than 0.25. A grooved plug having ridges and grooves formed on the outer peripheral surface of the plug is inserted into a blank tube, and the outer peripheral surface of the blank tube is pressed. This causes a blank tube material to flow into the grooves of the plug to form grooves in the inner surface of the blank tube. In this process, the blank tube material can easily flow into the grooves of the plug, so that cracks of the grooves and fins can be prevented.

The invention discloses a universal centrifugal pump wear ring test bed comprising a wear ring test unit, a fluid medium supply unit, a leaking liquid collection unit and a test table. The fluid medium supply unit, the wear ring test unit and the leaking liquid collection unit are installed on the test table. The fluid medium supply unit communicates with an inlet of a seal cavity of the wear ring test unit. An outlet of the seal cavity of the wear ring test unit communicates with the leaking liquid collection unit through a pipeline. The universal centrifugal pump wear ring test bed has the beneficial effects that the universal centrifugal pump wear ring test bed can be suitable for measuring leaking amounts of wear rings of different wear ring gaps, different wear ring lengths and different wear ring types; and operation is quite convenient, only the test wear rings need to be replaced when experiments are done on different samples, and most structures do not need to be detached. Measurement results are accurate, the medium leakage amounts are accurately measured through complete sealing of a rotor part and the difference method, the experiment precision is greatly improved, and reliability of the results is ensured.

The invention discloses a treatment method of desulfurization solid waste. The treatment method comprises the following steps that a, sulfur paste or sulfur mud is taken to be mixed with mixed doublesalt to obtain a sulfur salt mixture; b, a sulfur-fixing agent is added into the sulfur salt mixture obtained in the step a, water is added, uniform stirring is carried out to obtain a sulfur salt mixed slurry; c, drying treatment is carried out on the sulfur salt mixed slurry obtained in the step b to obtain sulfur-containing powder; and d, storing or combustion treatment are carried out on the sulfur-containing powder obtained in the step c. According to the treatment method, thte sulfur paste or sulfur mud difficult to treat in a coking plant and mixed double salt can be mixed together to be treated at the same time, the solid waste problem of the coking plant is solved, the obtained sulfur-containing powder is loose, not prone to caking and free of caking after being stored for more than half a year, the sulfur-containing powder can be completely incinerated in the subsequent sulfuric acid or sulfite production process, energy conservation and emission reduction are achieved, meanwhile, the effect that resources are recycled is realized, and better economic benefits are brought to enterprises.

The invention discloses an energy recovery gas-liquid two-phase circulating cooling system which comprises a first compressor, a gas flow controller, an atomizing pump, a cooling area, a temperature sensor, a fin tube heat exchanger, a second expansion machine, an electric generator, a storage battery, a gas-liquid separator, an air pump, a liquid delivery pump and a controller. A micropore in thesurface of the impeller outlet of the atomizing pump atomizes low temperature gas-liquid two-phase flow into a low temperature high-pressure gas-liquid mixture, and the low temperature high-pressuregas-liquid mixture can be in direct contact with the cooling area for heat dissipation; the fin tube heat exchanger absorbs the heat of high-temperature high-pressure gas-steam mixture for power generation, and the generated electric energy is stored in storage battery to be used by power generation equipment in the cooling system; after heat dissipation and pressure drop of the high-temperature high-pressure gas-steam mixture in the fin tube heat exchanger, the high-temperature high-pressure gas-steam mixture enters the gas-liquid separator; after gas-liquid separation, deionized water entersthe liquid delivery pump, the air flows into the external environment, and the operation condition of the entire system is adjusted by the controller.

The invention relates to an automatic blanking manger for feeding domestic fowls. The automatic blanking manger is characterized in that the manger comprises a strip manger body formed by an inner baffle, a soleplate connected with the inner baffle, and an outer baffle which is arranged opposite to the inner baffle and is connected with soleplate; a tilted segment slanting inward is arranged at the joint of the lower part of the outer baffle and the soleplate; a clapboard is vertically arranged along the length direction of the manger body between the inner baffle above the tilted segment and the outer baffle; a gap is left between the bottom of the clapboard and the tilted segment; and a plurality of support plates connected with the manger body are arranged on the clapboard at intervals. The automatic blanking manger can be widely used in the feeding process of raised domestic fowls.

The invention relates to an elevator traction sheave mould. A traction sheave comprises a tabular body and a continuous wheel rim arranged around an edge of the body, wherein the wheel rim is vertical to a plane of the body; an axial concentric wheel cylinder is arranged in the center of the body; and the mould comprises an upper steel mould and a lower steel mould for molding an outer surface of the traction sheave, and a concave sand mould for molding an upper end face and a lower end face of the traction sheave. The elevator traction sheave mould is characterized in that a columnar inner bore sand mould for forming an inner cavity of the wheel cylinder is arranged between the upper steel mould and the lower steel mould; the upper steel mould, the lower steel mould, the concave sand mould and the inner bore sand mould enclose to form a traction sheave molding cavity; a casting liquor pouring channel is arranged in the lower steel mould; and the channel is communicated with the molding cavity and a mould outer casting liquor storage tank. The elevator traction sheave mould is provided with a bottom pouring channel structure so as to facilitate casting liquor to flow into the mould molding cavity smoothly and uniformly, and the casting quality is improved. A fixed nut in threaded connection is arranged on the upper end of the inner bore sand mould, so that an axial position of the inner bore sand mould is favored to be fixed, and the fixed nut can also be unscrewed conveniently so as to beneficial to demoulding.

The invention relates to a profile porous self-bending extrusion die, and belongs to the technical field of dies. The technical problem that the cross section is prone to deforming due to large stressborn by the outer side surface of a profile existing in the prior art is solved. According to the profile porous self-bending extrusion die, because the two ends of a first semicircular cavity wall are connected to the first end of a first straight cavity wall and the first end of a first curved surface cavity wall correspondingly, the metal flow can be adjusted so as to enable metal to flow intoa material inlet opening more steadily and enable the metal to flow unevenly, so that a bent part is directly extruded, the profile is not subject to transverse moment force, and the outer side of the profile is reduced or the cross-sectional deformation is prevented.

The invention discloses a downward pressing structure special for a building steel bar cutter. The downward pressing structure comprises a supporting column, an ejector rod, a fixing plate, a protecting piece, a hydraulic cylinder, a pressing plate, a guide rod and a lubricating device; the lubricating device is installed at the top of the ejector rod, an oil bin is installed inside the lubricating device and can store lubricating oil, the lubricating oil is discharged through a branch pipe at the bottom and then enters a fixing sleeve through an oil pipe, namely, the position of the guide rodcan be lubricated, the effect is good, and the lubricating efficiency is high. A reciprocating mechanism is installed in the lubricating device and controlled by an independent driving motor, so thata fixing plug at the bottom is moved out of a bottom outlet of the oil bin, the lubricating oil can stably flow into the branch pipe at the bottom, excessive manual operation is not needed, and the automation effect is good; the oil absorption cotton is installed in the fixing sleeve and absorbs the lubricating oil discharged from the oil pipe, and then the lubricating oil seeps out through a permeation ring on the inner side of the fixing sleeve, so that the contact position of the guide rod and the fixing plate is continuously and stably lubricated.

The invention relates to a vacuum gel casting device. The vacuum gel casting device comprises a vacuum stirring bucket, a vacuum pump and a casting tank. A stirring motor is arranged on the upper portion of the vacuum stirring bucket. The casting tank comprises a tank body. A lifting platform is arranged in the tank body. An end cover is arranged at the top of the tank body. Lifting air cylindersare arranged on the upper portion of the end cover and are connected with the lifting platform through guide columns arranged in the tank body. The vacuum stirring bucket and the casting tank are connected with the vacuum pump through vacuumizing pipes. The vacuum stirring bucket is connected with the end cover through a flow guide pipe, and a discharging control valve is arranged at the joint ofthe vacuum stirring bucket and the flow guide pipe. The height of the bottom of the vacuum stirring bucket is larger than the height of the end cover. The vacuum gel casting device is simple in structure, small in occupied space, convenient to operate, high in grouting efficiency and high in casting quality, a manufactured blank is full in mold filling, uniform and free of bubbles, and the requirement for close-size prefabricated members in the precision machine production process can be met.

The embodiment of the invention discloses a flash tank and a refrigeration system with the same. The flash tank comprises a leading-in pipeline, a first flow regulation part and a floatable component. The leading-in pipeline is used for leading a medium into a cavity and provided with a medium inlet located in the cavity. The first flow regulation part can seal at least one part of the medium inlet of the leading-in pipeline to adjust the flow area of the medium inlet of the leading-in pipeline. The floatable component is connected with the lower end of the first flow regulation part, so that the first flow regulation part moves up and down according to the liquid level of the liquid medium in the cavity. When the liquid level is raised to make the first flow regulation part move upwards, the flow area of the medium inlet of the leading-in pipeline is decreased. While when the liquid level is lowered to make the first flow regulation part move downwards, the flow area of the medium inlet of the leading-in pipeline is increased. Through the flash tank, the inflow state of a refrigerant can be controlled more stably, and automatic regulation of the liquid level can be achieved without the aid of an electric control mode.

The invention relates to submersible type portable aqua-plant fishing equipment. The equipment comprises an aqua-plant collecting and cutting device, a delivery pipeline and an aqua-plant separation device, wherein the aqua-plant collecting and cutting device has a vertical structure and is totally divided into three layers by using upper and lower two supporting plates as boundaries; a solar cellpanel, a cylindrical buoy and an impurity filter screen are arranged on the upper layer of the aqua-plant collecting and cutting device; a water absorption horn, an aqua-plant cutter and a delivery pump are arranged on the middle layer of the aqua-plant collecting and cutting device; a motor matched with the delivery pump is arranged on the lower layer of the aqua-plant collecting and cutting device; and one end of the delivery pipeline is connected with the water outlet of the delivery pump, and the other end of the delivery pipeline is connected with the water inlet of the aqua-plant separation device. The submersible type portable aqua-plant fishing equipment with the submersible type design is simple and reasonable in structure and convenient to use and operate, has high fishing efficiency and relatively high automatic degree, can overcome the defect that floating equipment has a large size and needs on-board manual work, and is used for cleaning fine aqua-plants which cannot be fished by a traditional aqua-plant fisher.