Hydraulic quick connector standard
点击数：7052016-03-22 11:03:40 来源: Hebei Naiwo Fluid Technology Co.,Ltd
Assembly of the card sleeve type pipe joint
(1) the most important aspects of the pre - installed plug-in couplings are directly related to the reliability of the seal. Generally require a dedicated pre. The small diameter can be pre joint in a vise. The specific method is to use a joint as the mother, the nut, the clamp can be compressed to the tube. The utility model is mainly composed of a clamping sleeve type straight through pipe joint, a clamping sleeve type end connecting head, a sleeve type three way pipe joint, etc.. The author found that, even if the same manufacturer of a batch of goods, these joints on the tapered hole depth is often not the same as the result of a leak, and this problem is often overlooked. The correct approach is to connect the end of the pipe with what kind of connector, the corresponding end of the connection with the same type of pre installed, so as to avoid the problem of leakage. The pipe end should be flush. The pipe should be flush in sawing grinding wheel and other tools, and burr cleaning and blowing with high pressure air before use. Pre installed, should try to keep the pipe and the body of the coaxial degree, if the pipe deflection is too large will cause seal failure. The preloaded force should not be too Ambassador card sets inside just embedded into the outer wall of the pipe, the card sets should not have obvious deformation. In the pipeline connection, according to the specified tightening force assembly. Phi 6-1 card sleeve tightening force is 64-1 15N, 16 MMR 259n, Phi Phi 18mm for 450n. If the pre installed when the card sleeve deformation is serious, will lose the sealing effect.
(two) prohibit the addition of sealant and other fillers. Some people in order to achieve a better sealing effect, on the card cover with sealant, the sealant is driven into the hydraulic system, resulting in hydraulic components such as plug hole blockage.
(three) when connecting the pipe, the pipe should be provided with enough deformation allowance to avoid the tensile force of the pipe.
(four) when connecting the pipe, it should be avoided to be subjected to lateral force, and the lateral force will cause the seal to be lax.
(five) the connection of the pipeline, should be good at once, to avoid multiple removal, otherwise it will make the sealing performance worse. Sleeve type pipe joint installation
(1) in accordance with the requirements of the ninth chapter, the pickling pipe shall be treated with acid pickling;
(2) tube machine tools for cutting pipe sawing or special cutting length required, absolutely not allowed by fusing (such as flame cutting) or grinding wheel cutting; remove pipe end burr, cylindrical metal chips and dirt; remove the rust and dirt pipe joint; and also to ensure pipe roundness;
(3) the sleeve nut, successively sheathed in the pipe sleeve front edge (small end) from the pipe mouth at least 3mm, then the pipe is inserted into the connector body bore, until the top;
(4) slowly tighten the nut, while rotating the pipe until it does not move, then tighten the nut 2/3 ~ 4/3;
(5) open the check card sleeve is cut into the pipe, the location is correct. The card sleeve is not allowed to move axially, and can rotate slightly;
(6) inspection after re tighten the nut.
Two, the pipe joint leakage prevention in the hydraulic system, whether it is a metal pipe joint, or hose connector, there are easy to leak problem. The sleeve type pipe joint, mostly because of pipeline by external or large impact force, the card sets loose or tube deformation caused by the leak, you should check whether the card lost round, edge has no defect, the pipe end is intact and sleeve nut pressing degree, but also eliminate the pipeline external force. For flaredfitting, mostly because of excessive flaring, substandard quality or repeated disassembly, resulting in flaring deformation or cracks caused by leakage, the front again flared off. If you use the male and female cone top pressure seal, the leakage is mostly due to the two conical surface is damaged, grinding sand available to grinding cone. In some "C" ring on the end or outside sealing occasions, the leakage of the following reasons: "C" ring deformation caused by aging or leakage; the "C" ring assembly is not in place, the two plane connection or "C" uneven pressure ring is cut from causing leakage; "" ring without compaction, the elastic deformation caused by leakage; "a" ring spigot groove deep caused leakage. In this regard, the need to re select the same diameter and thick section "C" ring, can also be provided with a sealing plane rabbet groove of cutting or grinding, in order to reduce the rabbet groove depth, the "C" ring has enough elastic deformation (compression should be between 0.35-0.65mm). The pipe joint oil sheet, wool, steel board, combined sealing washer or sealant leak, whatever the material, should first check the seal is damaged, and rough conditions such as deformation, aging, and then take corresponding measures.
Three, high pressure hose connector installation notes
(1) the hose shall not be bent or bent at the root, while at least 1.5 times its diameter;
(2) when the hose is moved to the extreme position, it should not be pulled too tight, and should be relaxed;
(3) try to avoid twisting deformation of hose;
(4) hose as far away from the heat radiation components, necessary fashion insulation board;
(5) the external damage of the hose should be avoided, such as the long-term friction on the surface of the component;
(6) if the weight of the rubber hose causes excessive deformation, it shall be supported.
Four, pipeline pre installation
8.1 introduction pipe (1) and double head branch: from lubrication pump until all the oil inlet distributor, the pressure is relatively high. Usually the cold drawn seamless steel tube, the material is 10 or 15