46results about How to "Prevent secondary" patented technology

The invention relates to an all-directional code scanning sorter capable of inducing arrival of express items in the express transportation process to put on a lower side transparent plate; a support arm inner motor controls a lead screw to adjust the lower side transparent clamping plate to ascend and displace and an upper side transparent clamping plate to descend and displace so as to realize clamping of the express items; a back transparent clamping plate moves to a code scanning frame; and a steering engine controls the support arm to rotate to help code scanning so as to realize all-directional code scanning, so that the secondary or multiple scanning is prevented, the efficiency and the convenience are achieved, and the manpower is saved.

The invention provides a chelating agent and a preparation method and application thereof. According to the total amount of the prepared chelating agent as 100%, the chelating agent is prepared from the following raw materials in weight percentage: 15% to 30% of ferrous stabilizer, 5% to 12% of dichloroethane, 10% to 20% of solvent, 10% to 20% of sodium hydroxide, 5% to 10% of carbon disulfide, 1.5% to 4.5% of conditioning agent and the balance of water. The raw materials of the chelating agent disclosed by the invention have wide sources and low cost. The chelating agent disclosed by the invention has stable performance and long service life, can be stored and used for a long time and has good compatibility with acidized acid liquor systems.

The invention provides an integrated electroplating cleaning device. The integrated electroplating cleaning device comprises an electric mechanical arm (1), a pressure-resistant storage container (2),a spray head (4), a cleaning brush (5), a movable platform (7) and a controller (8), wherein the pressure-resistant storage container (2) comprises a container body (21), filling joints (22), discharge holes (23) and a mounting boss (25); the spray head (4) comprises a spray head shell (41), a sealing boss (42), a spraying channel (43), a brush mounting part (44) and a spraying hole (45); and thecleaning brush (5) comprises a cleaning brush disc (51), an arc-shaped guide plate (52) and brush heads (53). According to the device, acid pickling, cleaning, brushing, drying and combined compositewashing processes are effectively achieved; moreover, in the cleaning or drying process of the device, the brush heads always sweep the surface of a workpiece, so that dust is effectively prevented from being attached to the surface of the workpiece, the cleaning efficiency is high, and the effect is good; and the integrated electroplating cleaning device is widely suitable for cleaning treatmentof large-plane workpieces before electroplating.

The invention relates to the technical field of welding, in particular to a welding system for aluminum alloy laser welding. The welding system comprises a workbench, a surface machining device, a laser welding device and an electric arc welding device. A hard particle layer on a roller in the surface machining device is used for damaging a surface oxidation film of an aluminum alloy, so that the surface roughness of the aluminum alloy is improved, the reflection effect of the surface of the aluminum alloy on laser is effectively reduced, the welding process of the aluminum alloy is stabilized, and attractive and defect-free welding seams are obtained. Meanwhile, the invention further provides a surface treatment method of a to-be-welded part of the aluminum alloy by using the laser welding system, and a traditional surface treatment method used for laser or laser-arc welding hybrid welding of the aluminum alloy is changed, so that real-time treatment, namely surface treatment and the welding process of the surface of the be-welded part in the aluminum alloy welding process can be conducted synchronously, repeated treatment caused by the fact that the interval between surface pretreatment and the welding process is too long is avoided, the surface treatment method is simple and easy to operate, the welding pretreatment process is reduced, and the welding quality is improved.

The invention relates to a kind of multi-layer kitchen paper with a composite gluing solution. The paper comprises upper-layer raw paper, a hollow layer, a gluing layer, a hollow layer and lower-layerraw paper. The upper-layer raw paper comprises an upper surface layer and a lower surface layer; the lower-layer raw paper comprises an upper surface layer and a lower surface layer. The gluing layeris the composite gluing solution which is prepared from an anion rosin gluing agent, a cation starch gluing agent, cation water-based polyurethane-acrylic ester, a gluing solution reinforcement agentand the balance water; the gluing solution reinforcement agent is a mixture including a pentafluoroethyl-substituted pyridine compound shown in the formula, polysorbate and carboxymethylcellulose; through the composite gluing solution, the face, with oil strains, water strains and other pollutants, of the kitchen paper can keep high oil and water absorption characteristics, transfer and wetting of the pollutants to the handheld face can also be completely separated, the capacity of pollutant storage of the kitchen paper is improved, and the kitchen paper also has a new heat insulation function and helps to inhibit bacterium breeding, delay decomposition and reduce pollution.

The invention provides a terminal box with multiple types of interfaces integrated on one face plate. According to the connection method, due to the fact that the problem that different terminal boxes are installed for the second time or repeatedly installed due to development of the network technology is solved, construction cost is reduced, indoor wiring is standardized, indoor terminal boxes are reduced, cable connection is made to be more reliable, and installation, use and maintenance are all quite convenient to conduct. Dedicated composite cables or split cables enter the multi-purpose terminal box through cable input and output holes, if the dedicated composite cables are adopted, cable bodies in each composite cable are stripped, sleeved with dedicated protective sleeves and fixed with pressing plates, and then the stripped cable bodies are connected with corresponding terminals behind the face plate. If the split cables are adopted, the cable bodies in the split cables are directly connected with the corresponding terminals behind the face plate, and then the face plate covers a base and fixed to the base through screws.

The invention relates to a kind of multi-layer kitchen paper with a composite gluing solution. The paper comprises upper-layer raw paper, a hollow layer, a gluing layer, a hollow layer and lower-layerraw paper. The upper-layer raw paper comprises an upper surface layer and a lower surface layer; the lower-layer raw paper comprises an upper surface layer and a lower surface layer. The gluing layeris the composite gluing solution which is prepared from an anion rosin gluing agent, a cation starch gluing agent, cation water-based polyurethane-acrylic ester, a gluing solution reinforcement agentand the balance water; the gluing solution reinforcement agent is a mixture including a pentafluoroethyl-substituted pyridine compound shown in the formula, polysorbate and carboxymethylcellulose; through the composite gluing solution, the face, with oil strains, water strains and other pollutants, of the kitchen paper can keep high oil and water absorption characteristics, transfer and wetting of the pollutants to the handheld face can also be completely separated, the capacity of pollutant storage of the kitchen paper is improved, and the kitchen paper also has a new heat insulation function and helps to inhibit bacterium breeding, delay decomposition and reduce pollution.

The invention relates to the technical field of medical instruments, in particular to a stent graft used for treating peripheral arterial diseases and provided with a branch stent. The stent graft comprises a main stent and the branch stent, the main stent and the branch stent are each provided with a near end, a far end and an inner cavity arranged between the near end and the far end, an opening is formed in the main stent, the main stent and the branch stent are connected through a connector, the connector is provided with a bottom connected with the opening, a top capable of movably entering and exiting the opening and a connection inner cavity arranged between the bottom and the top, and the near end of the branch stent is connected with the top of the connector. The stent graft has the advantages that the stent graft is used for treating vascular diseases, is wide in adaptability, does not need to be customized, can be used for recovering multiple branch arteries when the peripheral arterial diseases are treated, prevents vascular stents from being implanted twice or many times and simplifies operation difficulty.

The invention provides an acidizing solution for dissolution of a clay mineral and a preparation method thereof. The acidizing solution comprises hydrochloric acid, fluoboric acid, acetic acid, trifluoroacetic acid, hydrogen peroxide, ammonium chloride, dimethylamino-methylbenzotriazole, alkyl ammonium chloride, and polymethylacrylic acid. The acidizing solution provided by the invention can effectively dissolve organic matter, such as clay minerals and cements, in a high-temperature oil-gas reservoir over 160° C., inhibit swelling and migration of clay particles in the presence of water in the acidizing process, avoid secondary deposition of the reservoir, and improve the permeability of the reservoir. The acidizing solution can be prepared and used on the field conveniently and is safe and reliable.

The invention discloses a blast furnace cooling-wall cooling water pipe repairing method and a structure thereof and a pressure leakage detection device, belonging to the technical field of iron making blast furnace production. The repairing method disclosed by the invention comprises the steps of pressure leakage detection, disconnection of a damaged cooling water pipe, leakage point bypass, threading of the damaged cooling water pipe, silk threading of the damaged cooling water pipe, pipe threading of the damaged cooling water pipe, external connection of a water source, grouting and the like. The repairing structure of the blast furnace cooling-wall cooling water pipe disclosed by the invention comprises the damaged cooling water pipe, a cooling water-in end at the upper part of the damaged cooling water pipe and a cooling water-out end at the lower part, wherein the cooling water-in end and the cooling water-out end are folded outward and communicated through an external cooling pipe, and a metal hose penetrates inside; a gap formed between the metal hose and the damaged cooling water pipe is filled with a high-heat conduction grouting layer; and a bypass pipe is arranged at the upper part of the external cooling pipe. In the invention, the problems that the service life of the blast furnace cooling wall is influenced and the repairing cost is high due to the imbalance between the local cooling effect and peripheral cooling effect in water leakage repairing of the blast furnace cooling wall are effectively solved.

The invention discloses a vertical impact tester which comprises a base frame module, an impact body module, a quick clamp module and at least one inertia triggering module .The base frame module forms a base framework of the vertical impact tester, and at least two guide shafts are longitudinally and vertically arranged in the base frame module .The impact body module comprises a movable carrier plate and a punch installed at the lower end of the movable carrier plate, and the movable carrier plate is connected with the guide shafts through linear bearings .The quick clamp module is installed on a bottom plate on the lower portion of the base frame module, opposite to the punch and used for holding an elastic workpiece to be subjected to impact testing .The inertia triggering modules are installed on the movable carrier plate .The impact body module impacts the elastic workpiece, rebounds and then triggers a locking action, and the impact body module is locked to the base frame module so as to prevent the impact body module from repeatedly colliding with the elastic workpiece .According to the technical scheme, modular design is adopted, the impacting action can be automatically locked after impact testing so as to prevent the elastic workpiece from being impacted twice or many times, and accuracy of testing is guaranteed.