64results about How to "Jet speed" patented technology

The invention relates to a gear burr removing technology. The technology comprises the following specific steps that 1, a burr removing device is constructed; 2, a gear is placed; 3, conducting and discharging are carried out; 4, an electrolyte is sprayed; 5, the gear is washed ultrasonically; 6, antirust treatment is carried out; and 7, the gear is naturally dried in air and delivered from storage. The technology has the following advantages that an anode terminal and a cathode terminal are utilized for conducting and discharging, the electrolyte is sprayed to the gear fast from bottom to top, the spraying speed is high, the electrolyte is sprayed in a centralized manner, and the burr removing effect is achieved; meanwhile, the burr removing effect is remarkable, the risk that the gear isbroken down is avoided, time for burr removing is short, and efficiency is high; the concentration of sodium nitrate is low, harm to the human body is avoided, corrosion to the surface of the gear isavoided, and meanwhile, the good burr removing effect can be ensured; and as the electrolyte spraying speed is high and the flow amount is large, the complex washing step in the later period is omitted, the gear only needs to be washed with clear water, the gear is washed ultrasonically, and thus greasy dirt on the surface of the gear can be decomposed and emulsified.

A dynamic pressure plasma synthesis jet generator relates to a jet generating device. The device uses the dynamic pressure of the forward incoming flow to introduce a high-speed incoming flow into a plasma generator cavity through an air bleed pipeline and a one-way valve, the pressure inside the cavity is increased, and meanwhile, a high-temperature plasma is generated in the cavity through high-voltage discharge, so that the air in the cavity is subjected to thermal expansion, and a high-speed jet is generated at a jet outlet. The device is provided with a plasma generator, the air bleed pipeline, the one-way valve and a high-voltage pulse power supply, wherein the plasma generator is composed of a negative electrode, a positive electrode and a generator cavity, and the generator cavityis provided with an incoming flow inlet, the jet outlet and electrode insertion holes. The device has the advantages of simple structure, light weight, low cost, almost no influence on the aerodynamicshape of an aircraft while generating the high-speed jet, and the like. In addition, the device can also control the jet velocity within a certain range by changing the loaded electrical parameters.

A coating device used for special coating glass fiber cloth preparation comprises bottom frames, a shell, an exhaust pipe, column feet, a conveying roller, a transmission motor, a conveyor belt, a paint filling device, a spraying tool and a blade coating tool. The bottom frames are symmetrically arranged. The shell is arranged on the top faces of the bottom frames. Each column foot is arranged onthe lower surface of the bottom frame on the corresponding side. The conveying roller is arranged between the bottom frames on the two sides. The conveyor belt is arranged outside the conveying rollerin a wrapping manner. The paint filling device is arranged on one side of the bottom frames. The spraying tool is arranged above the bottom frames. The blade coating tool is arranged above the conveyor belt. The paint filling device is flexible to use and can clean the inner portion of a liquid storage cavity; and the device is stable in system operation, uniform in blade coating and high in coating efficiency.

The invention discloses a directional ultrahigh-velocity spraying method and device based on a laser induced shock wave technology, belonging to the technical field of part processing and remanufacturing. According to the spraying method, a high-temperature electric arc generated by an electrode is firstly used for heating and melting spray wires of a coating material to form molten drops and the molten drops fall off and are atomized into a microdrop stream; then a laser pulse beam is used for irradiating the surface of the microdrop stream; a part of microdrops on the surface absorb laser energy and are instantly gasified and ionized into high-pressure plasma; the high-pressure plasma further absorbs laser energy and expands and blows up to form high-pressure shock waves at GPa grade; the high-pressure shock waves drive the corpuscular stream to jet onto the surface of a workpiece at a high velocity to form a coating. The spraying device comprises a laser generator, a beam guiding and splitting system, an electric arc liquid making system, a workpiece clamp system, a recycling system and a control system. The spraying device can be used for realizing high-velocity high-efficiency spraying; the combination strength of the coating and a substrate is good; the coating has high density and low void content and also has relatively high thermal fatigue resistance and mechanical fatigue resistance.

The invention relates to a laser ink-jetting printing head. The main parts of the laser ink-jetting printing head comprise a laser generator, a laser deflecting part, an ink-jetting part, and the like. Laser is sequentially projected in all small ink chambers of the ink-jetting part after being deflected by the laser deflecting part and generates thermal pressure or dynamic pressure, and ink is jetted out by pressure. Compared with a thermal bubble type and piezoelectric type ink-jetting head, laser ink-jetting printing head has low technical requirement for the manufacture process, simple circuit, high jetting speed and lower cost, can be easily manufactured into the ink-jetting head with page width and is easy to realize high-precision printing.

The invention relates to an oil granule counter which comprises an oil sample bottle, a liquid inlet tube, a sample pond, a liquid back tube, a plunger pump and a waste liquid collecting bottle, wherein one end of the liquid inlet tube is inserted into the oil sample bottle; the other end of the liquid inlet tube is connected with one end of the sample pond; the other end of the sample pond is connected with one end of the liquid back tube; the other end of the liquid back tube is inserted into the waste liquid collecting bottle; the plunger pump is arranged between the liquid back tube and the sample pond; a laser emitting device is arranged above the sample pond; a laser shaper is arranged between the laser emitting device and the sample pond; a light sensitive receiver is arranged below the sample pond; the light sensitive receiver is connected with a processor; a corrugated transverse tube is arranged between the liquid inlet tube and the sample pond; the corrugated transverse tube is of a hollow tube structure; wave-shaped bulges are arranged on both the upper surface and the lower surface of the corrugated transverse tube; and the bulges on the upper surface and the bulges on the lower surface are arranged in a staggered manner. The oil granule counter has the beneficial effects of being wide in application range, high in detection precision, simple in structure and convenient to operate, and the problem that a tube is blocked as the tube diameter is reduced to improve the precision is reduced.

The invention relates to an industrial coal powder boiler which is characterized by comprising a transversely arranged cylindrical boiler casing, wherein a front end plate and a back end plate are respectively arranged at the front part and the rear part in the boiler casing; two precombustion chambers abreast and axially penetrate the middle part of the front end plate, the outlet ends of the two precombustion chambers are respectively communicated with ends of two horizontal boiler flues abreast and transversely arranged in the boiler casing and other ends of the two boiler flues are respectively communicated with the back end plate; a front smokebox is formed between the front end of the boiler casing and the front end plate, the rear end of the boiler casing and the back end plate are divided into an upper part and a lower part through a partition board and a rear smokebox and a smoke collection chamber are respectively formed at the lower part and the upper part; a water wall circuit is vertically arranged in the rear smokebox and a chimney is communicated at the top of the smoke collection chamber; and a group of two-pass smoke pipes communicated with the front smokebox and the rear smokebox is axially arranged at the lower parts in the middles of the two boiler flues and a group of three-pass smoke pipes communicated with the front smokebox and the smoke collection chamber is axially arranged at the upper parts of the two boiler flues. The invention can be widely used in any situation where the small and medium-sized industrial coal powder boilers are required.

The invention relates to the field of automobile part machining and particularly discloses machining equipment for an automobile part mold. The machining equipment for the automobile part mold comprises a machine frame, a mold machining fixing base, a mold clamping device arranged on one side of the mold machining fixing base, a mold cleaning device and a mold polishing device adjacent to the moldclamping device. The mold machining fixing base comprises a machining base and a lateral stop block connected to one side of the machining base. Through the integral linkage arrangement, chippings generated after grinding can be directly removed while grinding is completed, and the problems that manual cleaning is low in efficiency and not thorough are solved.

The invention discloses a work method of a navigation system capable of preventing pileup. The navigation system comprises a navigation device and a plurality of camera devices arranged on the periphery of a vehicle, where the navigation device is installed. The navigation device comprises a processor module, which is connected to the vehicle controller of the vehicle. When the processor module finds out that brake lamp of a vehicle (A), which is in front of the vehicle (B) in the same lane, lights; the processor module sends a brake lamp control signal to the vehicle controller; the vehicle controller controls the brake lamp of the vehicle (B) to light so as to indicate a vehicle (C) behind the vehicle (B) to carry out effective action in time so as to keep a safe distance, thus the vehicle rear-end collision is avoided, so the pileup will not happen, and the traveling safety is guaranteed.

The invention relates to a plastering method of a concrete base capable of preventing the generation of empty drums. The plastering method comprises the following steps: construction preparation: preparing plastering as well as tools and a reagent for plastering; surface treatment of concrete: wetting a concrete surface with water, and washing powder and other impurities on the concrete surface; mixing an adhesion agent to paste with water, and fully and uniformly mixing, wherein the adhesion agent is thick after the pasty adhesion agent is placed for 5-10 min; adding water into the adhesion agent, and uniformly mixing for further use, wherein the mixed adhesion agent must be used out during 5-6 hours; adhering the uniformly mixed adhesion agent on the concrete base through a smearing method or a spraying and texturing method; plastering after the adhesion agent is condensed. According to the plastering method provided by the invention, the plastering is carried out after a layer of adhesion agent is adhered to the concrete base through the smearing method or the spraying and texturing method, therefore the empty drums generated by directly plastering on the concrete base can be prevented.

The invention relates to a silicon nitride coating of a crucible for a polycrystalline silicon ingot and a preparation method thereof, and belongs to the technical field of silicon nitride coating preparation. The silicon nitride coating is prepared from the following components in percentage by mass: 35 to 50 percent of silicon nitride powder, 20 to 30 percent of microcrystalline cellulose, 5 to10 percent of silica sol, 0.5 to 1 percent of aceramic bonding agent and 20 to 40 percent of water. The preparation method comprises the following steps: (1) wet material preparation: mixing the silicon nitride powder, water, microcrystalline cellulose, silica sol and theceramic bonding agent according to a certain proportion, and stirring the mixture with a stirrer to obtain a material A; (2) granulation: extruding the material A with an extruder to form a cylindrical stripped extrudate, then rounding the extrudate with a rounder to form spherical particles serving as a material B, and storing the material B in a particle storage tank; (3) high-pressure cold spraying: flattening silicon nitride particles on the surface of the crucible by using a high-pressure cold spraying technology without heating the crucible in order that the silicon nitride particles are subjected to plastic deformation and adhere firmly. The silicon nitride coating has the advantages of low porosity, high density and high product yield, and the production cost is lowered.

The invention provides a spray gun with a one-way valve cooperating with air supply, which comprises a shell, a base frame, a piston, a wrench and a thread and further comprises a valve body, a valve element and a sealing gasket, a valve element body of the valve element is matched with a valve element base, and a circular base plate supports a circular base plate; an air outlet connector is inserted into a cylindrical sleeve core to form a liquid outlet valve, an inserting sleeve is inserted into an annular inserting groove, a liquid outlet cavity is inserted into a connecting base, the valve element penetrates through a through hole on the thread, the circular base plate on the radial outer side of the connecting base is attached to a top plate of the thread, and the connecting base is connected with the base frame; and the valve element cavity is sleeved with the sealing gasket, the sealing gasket is attached to the circular base plate, and a center hole of the sealing gasket is communicated with an air guide hole. Due to the adoption of the structure, air supply and liquid outlet are coordinated, the sealing performance is good, and the spraying speed is high.

The invention discloses a cement clinker crushing roller surface heating repair device comprising a base. Supporting frames are fixedly connected to the two sides of the top of the base; and a top plate is fixedly connected to the tops of the two supporting frames. The cement clinker crushing roller surface heating repair device relates to the technical field of cement processing. According to thecement clinker crushing roller surface heating repair device, when a damaged crushing roller is repaired, the two ends of the crushing roller are inserted into a first rotating cylinder and a secondrotating cylinder correspondingly and fixed through a first locking bolt and a second locking bolt correspondingly, a driving motor is started to drive the first rotating cylinder to rotate and drivethe crushing roller to rotate, and a driving shaft rotates and drives a threaded rod to rotate at the same time, so that when the crushing roller rotates and is heated, a surfacing welding gun and a surfacing welding powder spraying pipe on a fixed plate move rightwards slowly to perform surfacing operation on the surface of the crushing roller, surfacing is performed while heating is performed, the surfacing quality is good, excessive convex points are not generated, and the surface of the crushing roller can be subjected to uniform surfacing.