47results about How to "Improve cleanliness level" patented technology

Provided is a reversible tail end assembly applied to a wafer conveying robot. A wrist shell of the robot is connected with one end of a small arm, a servo motor is installed in the wrist shell, a motor belt wheel is installed on an output shaft of the servo motor, a steel strip is connected between the motor belt wheel and a swing mechanism belt wheel, the swing mechanism belt wheel is fixed on a swing mechanism, one end of the swing mechanism is fixed in the wrist shell, the other end of the swing mechanism is connected with a vacuum adsorption tail end, and the left end of the swing mechanism is connected with a vacuum air tube joint. In other embodiments, the servo motor can also be replaced with other motors. When a wafer is adsorbed, vacuums are firstly generated in a fixed bent tube and a fixed outer tube, a vacuum can also be generated in a rotating inner tube while the rotating inner tube rotates, vacuum pressure is generated in a hollow duct of the vacuum adsorption tail end and an inner duct of a vacuum tail end connecting shaft, the wafer is adsorbed by means of a difference between internal pressure and external pressure, and vacuum pressure is generated in an inner duct of the swing mechanism while the swing mechanism rotates. Line winding is prevented, and coaxial design of a reversal action and a vacuum generation action is achieved.

The invention discloses a direct drive type reversible wafer transmission robot. A lifting and dropping and swing mechanism is installed on the inner portion of a base seat, the lifting and dropping and swing mechanism is connected with one end of a big arm, the other end of the big arm is connected with one end of a small arm, the other end of the small arm is connected with one end of a reverse wrist, and the other end of the reverse wrist is connected with a vacuum adsorption tail end. When the wafer transmission robot moves, a three-connection rod which composed of the big arm, the small arm and the reverse wrist fixes a specific speed movement, and a straight line expansion movement in the radial direction is achieved; a motor is used for driving the vacuum adsorption tail end, so that a reverse movement of the reverse wrist is achieved; by the adoption of the direct drive motor to drive directly, an interior structure of the robot is simplified, the number of intermediate links is reduced, and the rotating precision and the rotating efficiency of the robot are improved. Due to fewer part mechanisms, the robot is convenient to assemble and produce. A steel belt is used rotatably, so that the rotating precision is provided, the reliability of the robot is enhanced, the production of contaminant particles is lowered, and the level of cleanliness of the robot is improved. The degree of freedom of reversing of the robot is increased by the reverse wrist, and the range of application of the robot is enlarged.

The invention discloses an air purification system adopting wet dust removal. The air purification system comprises an air return channel, an electric induction device, a spray device, an air inlet filter unit and an electrostatic dust removal device, wherein the electric induction device is arranged on the indoor top, the inlet end of the electric induction device communicates with the air return channel, and a high-voltage negative power supply is arranged in the electric induction device; the inlet end of the spray device communicates with the outlet end of the electric induction device, and an air cleaning agent is arranged in the spray device; the outlet end of the air inlet filter unit is arranged on one side of the outlet end of the spray device, and the inlet end of the air inlet filter unit communicates with an air inlet of an air conditioning system; and the inlet end of the electrostatic dust removal device is arranged on the other side of the outlet end of the spray device, and the outlet end of the electrostatic dust removal device communicates with the indoor top space. According to the air purification system, the technical problems of poor dust removal effect of the air purification system and difficulty in increasing the quality of indoor air are solved.

The invention discloses a secondary charged dust removing air purification system. The secondary charged dust removing air purification system comprises a return air channel, an electric induction device, a charged dust collection device, an inlet air filter unit and an electrostatic dust removing device, wherein the electric induction device is arranged at the top of the interior of a room; the inlet end of the electric induction device communicates with the return air channel; the electric induction device is internally provided with a high-voltage negative power source; the inlet end of the charged dust collection device communicates with the outlet end of the electric induction device; direct current high voltages are connected to the upper side and the lower side of the charged dust collection device; the outlet end of the inlet air filter unit is arranged on one side of the outlet end of the charged dust collection device; the inlet end of the inlet air filter unit communicates with an air supply outlet of an air conditioning system; the inlet end of the electrostatic dust removing device is arranged on the other side of the outlet end of the charged dust collection device; and the outlet end of the electrostatic dust removing device communicates with a space at the top of the interior of the room. According to the secondary charged dust removing air purification system, the technical problem that fine dust in air cannot be effectively filtered is solved.

The invention discloses a smelting method for producing IF steel with low oxygen level in the whole process, and belongs to the technical field of iron and steel smelting. The steps of the present invention are as follows: step 1: slag dumping at the end of converter steel smelting, leaving 10-15 tons of slag in the converter, adding 50-100 kg of coke powder to remove oxygen in the slag, and then performing slag splashing to protect the furnace; step 2: charging the converter ;Step 3: Converter main blowing; Step 4: After the converter main blowing, measure the molten steel temperature and carbon content through the sub-lance, and control the auxiliary blowing oxygen amount according to the measured value; Step 5: After the auxiliary blowing, before tapping Bottom blowing for 30 seconds; Step 6: Converter tapping; Step 7: Molten steel enters the RH process; Step 8: After the ladle is lifted, turn on the vacuum pump to vacuum and decarburize. The invention can reduce the degree of peroxidation of molten steel in converter tapping, reduce the oxidizability of ladle top slag, and reduce deoxidized inclusions Al 2 o 3 The amount of production is increased, the cleanliness level of molten steel is improved, and the cost is reduced, which has significant economic benefits.

The invention discloses an air purification system for circulating cyclone dust removal, comprising: an air inlet filter unit, the lower end of which is provided with a top passage; The upper end of the top passage is connected, and the outlet end of the cyclone mixing device is connected with the top passage; the air washing device, the indoor return air processed by the cyclone mixing device is sent into the air washing device; the first round A wind filter, which is arranged in the center of the bottom of the room, and the first return air filter communicates with the air inlet of the air conditioning system; and a second return air filter, which is arranged on both sides of the indoor bottom, and the second return air Filters deliver conditioned room air directly to the cyclonic mixing unit. The invention solves the technical problems of large net occupation space and low processing efficiency of the air purification system.

The invention discloses an air purification system with high blast capacity. The system comprises an air inlet filter tank provided with a top channel at the lower end, an electric induction device arranged on the bottom of an air return channel in a transverse covering mode, an electrical charge dust collection device arranged in the air return channel at the upper end of the electric induction device, an electrostatic dust removal device transversely arranged at one end of the top channel, a first returned air filter and a second returned air filter, wherein the outlet end of the electrical charge dust collection device is communicated with the inlet end of the electrostatic dust removal device, and the outlet end of the electrostatic dust removal device is communicated with the outlet end of the air inlet filter tank. The technical problem of poor purified air blast capacity is solved.

The invention relates to a method for producing silicon deoxygenation low-sulfur high-carbon steel through an LF refining double slag method. An electric furnace-LF-VD continuous casting technology isadopted. The method includes the steps that in the electric furnace tapping process, carbon powder is mixed firstly, then a silicon alloy and a manganese alloy are added for conducting deoxygenationalloying treatment, and lime, calcium carbide and aluminum-free refining slag are added for conducting modification treatment; secondly, after an LF enters a station, lime, calcium carbide, silicon iron and aluminum-free refining slag are added into the furnace for making high-alkalinity reducing refining slag; thirdly, low-alkalinity reducing slag is made, and the content of components in moltensteel is adjusted; and fourthly, the LF withdraws from the station after refining, VD and continuous casting processes are conducted in sequence, and the silicon deoxygenation low-sulfur high-carbon steel is obtained. The method is simple, reliable, high in operability and easy to achieve, the production cost of the whole process is reduced, the sulfur removing efficiency is high, the cleanlinesslevel of molten steel is high, the problem that when a non-molten-steel pretreatment sulfur removing process is adopted for producing high-quality silicon deoxygenation low-sulfur high-carbon steel, sulfur removing is difficult is solved well, and therefore the product quality is improved, and the economic benefits of a steel enterprise are increased.

The invention discloses a low-energy air purification system. The low-energy air purification system comprises an intake filtering unit, an air return channel, a first blade wheel, an air return filtering unit and electrostatic dust collection devices, wherein a first flow equalization device is transversely arranged at the lower end of the intake filtering unit; the air return channel is arranged in the indoor side wall; the first blade wheel is transversely arranged between the intake filtering unit and the first flow equalization device, a center rotary shaft of the first blade wheel penetrates an indoor ceiling upwards and is connected with a drive mechanism, and a bottom channel is transversely arranged at the indoor bottom; an intake opening of the air return filtering unit communicates with the indoor bottom space, and an air outlet of the air return filtering unit communicates with the bottom channel; and the electrostatic dust collection devices are arranged in the portion, on the two sides of the air return filtering unit, of the bottom channel, an inlet of each electrostatic dust collection device communicates with the bottom channel, and an outlet of each electrostatic dust collection device communicates with the bottom of the air return channel. The low-energy air purification system solves the technical problem that energy consumption is too high by means of an existing air purification system.

The invention relates to a production method for silicon deoxidation low-sulfur high-carbon steel. An electric furnace-LF-VD-continuous casting process is adopted. The production method comprises thesteps that 1, in the steel tapping process of an electric furnace, carbon powder is added firstly, then a silicon alloy and a manganese alloy are added for deoxidation alloying treatment, and then lime, calcium carbide, aluminum-free refining slag are added to conduct modification treatment on slag; 2, after an LF enters a station, reductive refining slag is made; 3, after it is determined that the sulfur content in molten steel is controlled to be under a target value, the content of all components in the molten steel is adjusted to be within the required high-carbon steel component range; and 4, the LF leaves the station after refining, VD and continuous casting processes are sequentially conducted, and the silicon deoxidation low-sulfur high-carbon steel is obtained. The production method is provided under the overall background of the molten-iron-free pretreatment desulfurization process in traditional smelting production of the silicon deoxidation low-sulfur high-carbon steel, thelimit of production of the silicon deoxidation low-sulfur high-carbon steel through the molten-iron-free pretreatment desulfurization process on equipment is overcome, in the LF refining process, therefining slag with the specific components and properties is smelted, and the dual purposes of efficient desulfurization of the molten steel and plastification control over inclusions are realized.