Inspection of concrete pump after use
The concrete pump is mainly driven by the piston rod of the cylinder to push the concrete into the conveying pipeline. Through the sequential action between the concrete distribution valve and the main cylinder, the concrete is continuously sucked from the concrete hopper into the concrete cylinder and transported to the pouring place through the conveying pipeline. This completes the entire concrete conveying process. Let's take a look at the inspection work after the concrete pump is used.
1. Firstly use compressed air to purge or high-pressure water to wash the concrete pump. If the pumping operation is not carried out within two days after washing, the pipe fittings can be removed step by step, and then the inside and outside of the pipe fittings, clamps and sealing rings can be washed out with water.
2. After the delivery is completed, all the pipe fittings are inspected once and then stored according to the specifications and the degree of integrity.
3. Flush the hopper, valve box, concrete cylinder and pump to ensure clean.
4. Dry the cover and the water on the electrical box, check the water in the electrical box, and handle it accordingly.
5. Cut off the power supply, remove the cable, remote control line, etc., and check each component to see if there is any damage.
6. Handle problems found during operation, use random tools for cleaning and maintenance, and then cover with concrete cover.
The concrete pump's delivery cylinder is an important part of the concrete pump, which can easily cause damage to the delivery cylinder if it is not used. So what should we pay attention to when using it? Let's get to know it with Xiaobian.
Piston and delivery cylinder, the piston is generally made of polyurethane material, which is elastic and wear-resistant. The inner wall of the conveying cylinder is also coated with wear-resistant material. There are two kinds of lubrication methods between the piston and the conveying cylinder: one is automatic lubrication, one for each pumping, the fueling system automatically adds one lubricating oil; the other is a manual refueling system, which requires manual refueling. For the automatic refueling system, it is necessary to regularly check whether the oil passage is unblocked. Once the oil passage is blocked, the piston and the conveying cylinder will be sharply worn. For the manual refueling system, the operator should replenish the lubricating oil regularly according to the working environment, usually once. /h. Remember: When refueling, be sure to jog the piston to the lower part of the vertical refueling point so that the lubricant just enters the oil groove in the middle of the piston.
During the pumping process, the operator should also perform the “cylinder” operation frequently, that is, when the main cylinder piston runs to the end point, operate the jog button for 5-8s to supplement the hydraulic oil of the main cylinder to close the oil chamber ( For pumps that rely on proximity switch reversing, the proximity switch should be placed as close as possible to the side of the main cylinder to make full use of the stroke of the delivery cylinder to avoid local wear of the delivery cylinder.
In addition, the water temperature of the cooling water in the water tank is also very important. The water temperature is too high, which will aggravate the wear of the piston, and the cooling water in the water tank needs to be replaced frequently. When the pipeline is connected, it must be picked up from the outlet of the pump, that is, from front to back. Do not connect the two ends first, then connect the middle. Incorrect connection will cause "internal forces" between the pipes, and the concrete pump will easily cause the pipe to break from the joint. After the pipeline is connected, the outlet of the pump, the elbow, and the suspended space of the pipeline must be fixed firmly to prevent the pipeline from damaging and damaging the pipeline.
