Assembly and adjustment of compressors in clean room workshops
Assembly and adjustment of compressors in clean room workshops
The assembly and adjustment of the refrigeration compressor is the last stage of the maintenance process. After the parts are disassembled, inspected and repaired, they can be reassembled. The assembly procedure is to assemble the parts into components first, and then carry out final assembly; all spare parts And the repaired parts are...
Text label: Dust-free pharmaceutical cleanroom plant assembly, compressor assembly and adjustment
Assembly and adjustment of compressor in clean room pharmaceutical cleanroom
The assembly and adjustment of the refrigeration compressor is the last stage of the maintenance process. After the parts are disassembled, inspected and repaired, they can be reassembled. The assembly procedure is to assemble the parts into components first, and then carry out final assembly; all spare parts All parts and repaired parts should be inspected to see if there is any damage and rust on the surface. At the same time, they must be cleaned before assembly; when the piston pin is assembled, the piston can be immersed in hot oil at 80-100 ℃ to heat, and then the piston The pin is inserted into the piston pin hole at one end and the small end bushing hole of the connecting rod. It can be tapped lightly with a wooden stick, and finally the steel wire retaining ring is inserted into the piston pin seat hole; if the ambient temperature is low, the piston pin should also be slightly heated. In order to avoid that the piston and the piston pin have different expansion coefficients due to different metal materials, if the pin is too cold, the local heat transfer in the insertion hole will be fast. Before the piston pin is installed, the piston pin seat hole shrinks sharply and cannot be installed; The small end of the connecting rod is a needle roller bearing. Before assembly, first put the clamping ring and needle roller into the bearing housing, and then push the guide sleeve in. When assembling, use a spring retaining ring for one hole and use needle nose pliers to install it. In the groove of the small head hole, by heating the small head, put the bearing retaining ring and the needle bearing into the small supporting hole, then put the bearing retaining ring, and then install the elastic retaining ring for the other hole.
When assembling the exhaust valve group, there should be no burrs on the matching cover, and the valve spring should not be installed biased. To prevent the deformation of the steam valve spring; wipe the sealing surface clean before assembly, and install the valve plate flat. When assembling the valve cover and the outer valve seat, fit the sealing surface of the outer valve seat and the sealing surface of the valve plate to make the outer valve seat boss Enter into the groove of the bonnet, and then tighten it symmetrically with two screws to check whether the valve plate can be activated flexibly, and then install the remaining screws; Fit the sealing surface, put the air valve bolt into the center of the inner valve seat and the valve cover, and tighten it with the crown nut. At the same time, pay attention to the bottom plane of the screwed bolt, which cannot be higher than the lower plane of the inner valve seat to prevent it from hitting the piston; After the air valve is assembled, measure the opening degree of the valve plate. For its technical requirements, please refer to the inspection of the suction and exhaust valves. If it does not meet the requirements, it should be adjusted and then tested for leakage; when assembling the oil three-way valve, the valve core should have holes. Align with the outlet, then install the elastic ring, ring and valve cover, and then flatten the screws on the plate surface to prevent the valve stem from rotating inflexibly; when assembling the handle, pay attention to the arrow on the handle to match the position on the plate. Finally tighten with screws. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean rooms and clean workshops.
The valve core and spring should be flat when placed in the valve body, and cannot be biased; when testing the pressure, pay attention to the adjustment screw. If the pressure is too high, it can jump up, and it can be adjusted to loosen a little. Tighten it a little, until the pressure is adjusted, and then seal it with lead; when assembling the globe valve, put the half-ring gasket and the valve stem into the valve cover, and then put the plastic mesh into the stuffing box, and use the pressure Tighten the nut and screw it on; put the sealing ring into the valve groove, install the compression cover, tighten it with screws, put the valve into the valve stem, put it into the valve body together, and then tighten the surrounding screws symmetrically ;Fix the valve stem and the lower float rod with a split pin, then install the valve core on the sealing surface of the valve seat, and then put the upper float rod into the hole of the float foot, and use the screw to connect the float foot and the valve cover. The connection is one, and attention should be paid to the verticality of the float ball and the valve core. In the final assembly, carefully check the relative position and relationship of each component for correct
At the same time, check whether there is any bruise. If there is any bruise, it should be repaired in time. During the assembly process, the surfaces of all parts that move with each other should be coated with lubricating oil, which is anti-corrosion and easy to assemble. Oil-resistant asbestos rubber paper pads should be added to the joint surfaces of the parts in contact to ensure tightness; the thickness of the paper pads should be selected according to the requirements for the joint surfaces with gaps in the body, and the thickness of the paper pads should not be changed arbitrarily. evenly.
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