Concrete Pump Truck Working Principle Pump concrete pump hydraulic system, A, B ports are connected to the two pumping cylinder inlet and outlet chamber, the main pump alternately from the A, B port for the delivery of 2 pumping cylinder High pressure oil. As shown in Figure 1. Right pump cylinder rod chamber into the high-pressure oil to drive the piston rod retracts, the right pump cylinder rod chamber pressure oil through the high-pressure tubing into the left pump cylinder rod chamber, the left drive cylinder piston rod drive Out When the proximity switch senses right piston cylinder piston rod in place, the control system sends a commutation signal. After the main pump receives the commutation signal, it will turn on the left pump cylinder with pressure oil in the rod chamber to retract the left pump cylinder piston rod. Left pump cylinder chamber pressure oil, through the high-pressure tubing into the right pump cylinder rodless cavity, driving the right cylinder cylinder piston rod out. 2 pumping cylinder so alternately action, you can complete the concrete pumping work. When the pumping cylinder has a rod cavity into the pressure oil and the piston rod will be moved to the end of the rodless chamber, because the rod cavity oil pressure is higher than the rodless cavity, the rod cavity pressure oil passes through the small hole in the pumping cylinder, Check valve, damping hole to rodless cavity oil, piston rod can stop moving as soon as possible. On the contrary, when the main pump is connected with two pump cylinder without rod chamber, two pump cylinder with rod chamber A, B port communication. At this moment, the oil pressure in the rodless chamber is lower than that in the rod chamber, and the pressure oil in the rodless chamber can not make oil to the rod chamber through the small hole in the pumping cylinder. Concrete pump truck to pump concrete, concrete pump truck to change the impact force is too large, can produce the following five kinds of hazards: First, causing jib crane jitter, affecting its service life; second is to make the end of the boom soft Tube swing increases, easy to bruise the operator; Third, it is easy to cause the main hydraulic pump suction empty, affecting its service life; fourth is to make the power loss increases, fuel consumption increases; five is to make the noise increase, to the environmental zone To adversely affect.
Metal Chelating Affinity Chromatography is widely used in purification of His-tagged recombinant protein. The immobilized metal affinity chromatography resin provides exceptional binding capacity and performance for recombinant His-tagged Protein Purification. UniNi affinity resin consisting of chelating resins charged with nickel ions is specifically designed to capture and purify histidine containing proteins.
UniNi affinity chromatography resin is based on monodisperse rigid porous polymer beads coating with a highly hydrophilic intermediate layer, following by attached with an optimized density of chelating ligands. The resulting metal affinity resins have low non-specific bindings and high capacity for histidine containing proteins.
Metal-chelate Affinity Chromatography Media
Metal-Chelate Affinity Chromatography Media,Metal Chelating Affinity Chromatography
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