34results about How to "Easy to observe usage" patented technology

The invention discloses an experiment system and an experiment method for tangential filtration of a high pressure resistant flat reverse osmosis (RO) membrane. The experiment system comprises a material feeding pot, a pressure pump, a flat RO membrane filtration device, a storage pot, a pressure gauge, an adjustment valve and a safety valve. The experiment method comprises the following steps of: (1) arranging an RO membrane between a top plate and a base plate, and fastening the top plate and the base plate together through bolts; (2) connecting equipment; (3) keeping the safety valve closed and the adjustment valve opened, and starting the high-pressure pump; (4) gradually turning down the opening degree of the adjustment valve, so that the liquid feeding pressure of the flat RO membrane filtration device is raised until material liquid flowing through the membrane flows out; and (5) finishing collecting the filtered material liquid, stopping the pump, and opening the adjustment valve and the safety valve to release pressure. The experiment system is feasible in a laboratory and can bear high pressure required by tangential filtration of the flat RO membrane so as to finish an RO filtration experiment; and according to the experiment method, the pollution situation of the membrane in each filtration stage can be observed conveniently, and researches on a pollution control technology is facilitated.

The invention provides a stirring machine capable of efficiently completing concrete stirring. The machine capable of efficiently completing concrete stirring comprises a base frame, a material storing mechanism, a preliminary mixing auxiliary mechanism and a stirring mechanism; the material storing mechanism comprises a material storing cylinder, a positioning pillar, a plurality of partition plates and an insulation plate, the material storing cylinder is installed on the base frame, the positioning pillar is located in the material storing cylinder and coaxially arranged with the material storing cylinder, the partition plates are located in the material storing cylinder and connected with the positioning pillar and the material storing cylinder, and the insulation plate is detachably installed on the lower portion of the material storing cylinder; the preliminary mixing auxiliary mechanism comprises a material guiding frame, a material gathering frame and a material splitting block, a material guiding through hole is formed in the material guiding frame, and a material gather through hole is formed in the material gathering frame; and the stirring mechanism comprises a first gear, an arc-shaped plate, an installing fame, a stirring barrel and a second gear, and a transmission ring is installed on the stirring barrel. The stirring machine capable of efficiently completing concrete stirring is convenient to use, stirring efficiency of concrete is effectively improved, and the using quantities of various materials are convenient to observe.

The invention discloses a thread residue collector. The thread residue collector comprises a first roll shaft and a second roll shaft, which are located on one side of the exterior of a pipeline; at least one third roll shaft is arranged on the other side of the pipeline corresponding to the first roll shaft or / and the second roll shaft; and a thread residue adsorption belt is wound around the first roll shaft, penetrates through the pipeline from the first roll shaft, passes through the third roll shaft and then is collected by the second roll shaft, and the thread residue adsorption belt is a net-like adsorption belt with adhesive on the surface. The thread residue collector has a good thread residue recovery effect and is convenient to clean.

The invention discloses a condensation-type dryer. The condensation-type dryer comprises an outer barrel, an inner barrel and a gas circulation pipeline arranged between the outer barrel and the inner barrel; a drying chamber containing clothes is formed in the inner barrel, and the inner barrel is rotatably connected to the outer barrel; a first condenser and a second condenser are connected to the gas circulation pipeline, the portion, between the first condenser and the second condenser, in the gas circulation pipeline is provided with a thread chip collection device, and the thread crumb collection device comprises a thread crumb adsorption band which intersects with the gas circulation pipeline and is a net-shaped adsorption band with viscose on the surface. The dryer is good in condensation effect and thorough in thread crumb removing.

The invention relates to lubricating oil and a preparation method thereof. The lubricating oil comprises the following components in parts by weight: 65 to 95 parts of base oil; 1.5 to 3 parts of an antiwear functional agent; 2 to 8 parts of a reinforcing agent; 4 to 15 parts of a viscosity index agent; 0.2 to 1 part of a pour point depressant; 1.5 to 3 parts of an antioxidant and 0.1 to 0.5 partof an anti-foaming agent; the reinforcing agent is formed by mixing the following raw materials in parts by weight: 68 to 75 parts of polymethyl methacrylate; 28 to 35 parts of ester oil; 5 to 10 parts of a diphenylamine antioxidant containing butyl and octyl; 5 to 10 parts of beta-(3,5-di-tert-butyl-4-hydroxy phenyl)propionic acid isooctyl alcohol ester. The lubricating oil prepared through the method has the characteristics of good low-temperature property, appropriate viscosity and good antiwear effect.

The invention provides a two-section independent temperature-control biological 3D printing spray nozzle. The two-section independent temperature-control biological 3D printing spray nozzle comprisesa main shell, a material barrel, a spraying nozzle extruding device and a spraying nozzle needle, a first temperature-control device is arranged in the main shell, the material barrel is inserted intothe first temperature-control device, and the bottom end of the material barrel is connected with the spraying nozzle extruding device through a feeding pipe. A discharging pipe is arranged at the bottom end of the spraying nozzle extruding device, the spraying nozzle needle is connected with the discharging pipe and penetrates out to the outer side of the bottom of the main shell, a second temperature-control device is arranged between the tail end of the spraying nozzle needle and the top end of the discharging pipe, and a heat isolating device for preventing mutual interference of the temperatures is arranged between the first temperature-control device and the second temperature-control device. According to the two-section independent temperature-control biological 3D printing spray nozzle, independent temperature control over the spraying nozzle material barrel section and the spraying nozzle needle section is achieved, gradient temperature control of the spraying nozzle can be achieved, all gradient values are mutually independent, and temperature control is not affected by one another.

The invention discloses a roller belt conveyor. The roller belt conveyor comprises a middle frame, supporting legs, a transmission drum, a transmission drum driving device, a conveyor belt, a ball screw transmission device, an upper roller assembly, a return roller assembly and a turnabout drum. The conveyor belt is wound around the transmission drum, the upper roller assembly, the turnabout drum and the return roller assembly sequentially and then is sewn end to end. The upper roller assembly comprises a horizontal roller and an adjustable roller groove angle device, wherein the horizontal roller is provided with a roller bearing explosion prevention device; the adjustable roller groove angle device is installed adjacent to the horizontal roller and adjusts the wrap angle of the conveyor belt through the ball screw transmission device. The conveyor achieves adjustable conversion of conveying of bagged materials and bulk materials; in addition, when conveying the bulk materials, as the conveyor belt is folded towards the middle, the materials will not be scattered, and the burden of working staff is relieved. The usage conditions of roller bearings can be conveniently observed, observation, maintenance and replacement are facilitated, and safety performance is greatly improved.