Concrete Pump Repair & Maintenance

Concrete Pump Repair & Maintenance Concrete pump at work, if used improperly, can easily lead to premature pump some parts damage, not only increased equipment maintenance costs, but also seriously affect production. How to improve the life of the concrete pump wearing parts: 1. cutting ring and glasses, plates and glasses plate cutting ring is a tight fit for having a relatively moving parts, the contact surface between the two are welded with a layer of wear resistant material, by S splined shaft end tube shaped nut, both adjustable clearance (0.1 ~ 0.2) mm. Rubber spring between automatic easy mix plastic concrete stainless steel cement mixer the S-shaped pipe fitting and cutting ring, the cutting ring and glasses plate relative motion can be flexible and comfortable. With the use of time, the rubber spring loses its elasticity, and glasses plate cutting ring joints wear will occur, resulting in a gap between them increases. When the gap> 0.7mm, the need to immediately adjust, otherwise pumping mortar will take the "gap" into the room. Once the mortar into the friction surface, and glasses plate cutting ring wear rate will be greatly accelerated. When pumping concrete, cutting ring with the S-tube swing and swing, plays a role in cutting concrete, thus cutting ring wear faster, the higher the pressure at the outlet of concrete, cutting ring wear more serious. Typically, the first cutting ring wear occurs at the edge, and in the upper portion into two symmetrical parts 90 ° angle. Therefore, when these parts cutting ring wear, it may be an angle of rotation of the cutting ring and continue to use, which is equivalent to extend the life of the cutting ring doubled. Wear glasses plate nose at the middle of its first occurs, the greater the gap between the glasses, plates and cutting ring, wear faster. Therefore you must always pay attention to the gap between the glasses, plates and cutting rings, once found the gap increases, the need to immediately tighten the nut or replace worn parts shaped to prevent mortar into the friction surface. When the rubber spring loses its elasticity, to be replaced immediately. For the cutting ring can be repaired and glasses, plates, available D507 welding rod after continued use. 2. The piston and cylinder piston transport material generally composed of polyurethane, elastic than the wear and delivery cylinder walls are coated with a wear-resistant material. Lubrication between the piston and the delivery cylinder there are two: one is the automatic lubrication, pumped once every refueling system will automatically add a lubricant; the other is a manual refueling system, js500 cement mixer mixing equipment concrete mixer made in china need artificial periodic refueling. For automated refueling system, whether the need to regularly check the oil flow, or if the oil is blocked, and the delivery cylinder piston will rapidly wear; for manual refueling system, the operator should be based on different work environment, regular replenishment of lubricating oil, usually 1 times / h. Remember: When refueling, be sure to move the piston to the lower vertical refueling point so that the lubricating oil sump just entering middle piston. Pumping process, the operator also often a "hold-cylinder" operation, that is, when the master cylinder piston movement to the end, the operation to move the button, keep 5 ~ 8s, to supplement the master cylinder oil chamber closed hydraulic oil (for rely proximity switches commutation of pumps, but also the proximity switch as close to the master cylinder side) to take advantage of the delivery cylinder stroke, avoid partial delivery cylinder wear. The operator should also pay close attention to the water tank, the water is cloudy or if it is found there is sand in water, show piston may be worn, the need for timely replacement of the piston, otherwise it will aggravate the wear of the piston and the delivery cylinder. If after replacement pistons, water quickly becomes cloudy, it means that the delivery cylinder is worn, replace the delivery cylinder. Able to do so, it may determine whether the delivery cylinder wear, under normal circumstances, chrome plated cylinder wall thickness only (0.2 ~ 0.25) mm, when the bore is increased (0.45 ~ 0.55) mm, to be replaced by measuring bore delivery methods a cylinder. In addition, the tank cooling water temperature is also very important, the water temperature is too high, also increased wear of the piston, need frequent replacement of cooling water in the tank. 3. pipeline takeover, we must do pick up at the outlet of the pump, that is connected from front to back, must first pick two, followed by the middle. Incorrect connection will lead to mutual existence pipeline "internal force", pumping easily lead to pipeline rupture from the joints. Pipeline connected, pump exit, bends, pipe vacant at every fixed firmly to prevent towable mini cement mixer jzr500 mobile concrete mixer in stock the pipeline from being damaged by the pipeline ran. Since the pump from the closer, the higher the pressure pipe in the concrete, so the pump at the outlet to use the new pipeline wall thickness, the thin wall of the old pipe is used in more distant from the pump, which can improve the use of the pipeline life, while reducing the possibility of burst pipes. For pipe, wear the most serious side away from the pump, should often bend turn use to extend its service life. 4. spout, conical tubes, dispensing valve for the discharge port, tapered tube, dispensing valve and other wearing parts, if found to be worn wear layer, timely D507 surfacing electrode, can still be used for some time. Because of different site conditions, such as the level of concrete pumping distance, height, etc., so that the life of a different site, the cutting ring and glasses, plates and other consumables vary widely, but as long as the proper use and handling, pump service life of wearing parts can be greatly extended.