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Concrete mixer pumps are used frequently in the construction process of construction projects and play an important role in construction. From the content of concrete equipment construction operation, the level of its operation is directly related to the quality and safety of construction projects.

Concrete pumps are relatively commonly used mechanical equipment nowadays. When purchasing concrete pumps, not only the scale of the manufacturer and product quality must be considered, but also some professional knowledge of the products must be considered.

The mixer pump is a small concrete delivery pump that adopts a fully automated construction operating system and integrates feeding, mixing and high-pressure pumping. The pump is easy to operate, stable in performance and easy to move.

What are the pumping principles of the truck mounted shotcrete machine? How does the concrete delivery pump carry out the pumping of concrete? Based on long-term repeated tests and customer research, Saintyol DAWIN Machinery believes that there are many factors that affect the material absorption of the agitator pump pumping system, which are independent of each other and affect each other,

With the construction of mine roadways, railway and highway tunnels, water conservancy culverts, and various underground projects in the country, the internationally advanced support method of shotcrete support is widely used. Concrete shotcrete is the main equipment for this operation, but due to There are three major problems in dry spraying machines: ① large dust, ② high rebound, and ③ poor quality.

The layout of the concrete pump pipe must pay attention to the following points: 1. In order to reduce the pumping resistance, try not to place a 90-degree elbow immediately at the outlet of the concrete pump. The correct pipe layout method is to place a short pipe of 1 to 2 meters at the outlet of the concrete pump, then connect a 3-meter straight pipe, and then consider the problem of connecting a 90-degree elbow to the ground. This has two purposes.

Things to pay attention to when choosing a concrete pump truck construction:

During operation, the pumping displacement of the concrete pump truck depends on constantly adjusting the pumping speed to change the size. The adjustment of the pumping displacement is also very important. Do you know if it changes? Today I will teach you how to change the pumping displacement. Common ways to measure:

When the concrete pump is carrying out short-distance pumping construction with low head and short distance, it only needs to erect the first boom hinged with the boom turret, and then unfold the fourth and fifth booms at the end. The jib combination for short-distance pumping is composed of the first, fourth, and fifth-section booms to meet the needs of short-distance pumping construction. At this time, the second and third section booms lean against the head boom.

The section end boom is crimped and at the end of the extended section boom the concrete is pumped out of the attached discharge hose using the pipe switch. This solution can effectively reduce the height and length of the boom during pumping, so as to achieve the purpose of saving. However, the pipe switching device and unloading hose added to the curled part of the end boom have a great influence

Purpose: To guide the pressure adjustment of the pumping, reversing, stirring, and washing hydraulic systems of the sky pump. Adjustment steps: Loosen all the adjustment screws of the main relief valve on the main valve block and all the relief valves on the auxiliary valve block.

1. Pump pipe: a set of good quality wear-resistant pipe, the service life is generally about 30,000 cubic meters of concrete, that is to say, it must be replaced after 30,000 cubic meters of concrete is hit. Therefore, according to the annual pumping of 100,000 cubic meters of concrete machinery, at least 3 sets of pump pipes must be replaced a year.

The outriggers of the sky pump play a very important role in the whole car. If the chassis is not stable enough, it will fall easily. Therefore, the stability of a car has a crucial relationship with the outriggers. Whether the outriggers can be stably attached to the ground is also a very important link in the safety inspection of sky pumps.

Working principle of concrete pump Concrete pump (support pump) is composed of hopper, pump body, hydraulic cylinder for driving slide valve, slide valve, conveying cylinder, main hydraulic cylinder and pilot valve. When the main hydraulic pump drives the concrete piston to retract, under the push of the mixing blade, the concrete poured into the hopper is sucked into the delivery cylinder through the suction port of the slide valve. When the main hydraulic cylinder moves forward,

Anyone who has used a pump truck knows that the pump truck is particularly expensive for lithium-based grease, commonly known as butter, because of the special structure of the hopper. In order to ensure that the shaft is not intruded and worn by concrete, the butter is continuously overflowed from the sealed cavity, and the concrete Push it outwards to protect the inner shaft and bearings by consuming grease.

The number of hydraulic cylinders used in the concrete industry is very high, and different numbers of cylinders are used according to the number of different arms. A balance valve is used on each cylinder, which shows the importance of the balance valve, so today we will analyze it and possible problems.

If the pump truck touches the wires, the measures that should be taken are:

. Before moving the boom and extending the outriggers, check whether there are obstacles around. Prevent the jib or outriggers from touching buildings or other obstacles. When the operator cannot observe the entire work area or cannot accurately determine the distance between the outstretched part of the pump truck and adjacent objects, a guide should be assigned to command.

Since the piston of the concrete pump truck is a very important part, it needs to be in direct contact with the concrete, so the requirements for it are also very high, and there are very strict requirements for sealing and wear resistance, so sometimes if Something happened, and we should also think about whether it is a problem with the piston.

During the construction process, the pump truck must be poured according to the regulations. Today, I will introduce to you the pouring sequence of the pump truck.

As a popular pumping equipment at present, concrete pump truck can greatly improve construction efficiency and is very popular with construction parties. However, in order to prolong the service life of the concrete pump, it is necessary to carry out the necessary maintenance, which can be carried out from the following aspects.

The sealing of the gate valve is limited by the structure, and the sealing pressure is low. It is inevitable to use a Y-shaped pipe to connect the double cylinder of the concrete pump and the delivery pipe during construction, and the Y-shaped pipe will cause a large pressure loss. In addition, when the gate valve is used for conveying, it is also required to install a horizontal conveying pipe section in front of the vertical conveying pipeline,

1. Control workability and slump of concrete
The pumped concrete shall be designed in strict accordance with the regulations, the slump shall be strictly controlled, and the following principles shall be followed. (1) The ratio of the maximum particle size of coarse aggregate to the diameter of the conveying pipe should be: when the pumping height is below 50 m, it is not suitable for gravel

As the terminal equipment for pumping concrete, the mobile hydraulic concrete placing boom is used to send the pumped concrete through the pipeline to the formwork of the component to be poured. The hydraulic concrete placing boom does not need to be fixed when used, and the position and conveying direction can be flexibly changed according to the needs of the construction site.

HGY24 concrete hydraulic concrete placing boom is a terminal equipment used in conjunction with concrete pumps. It is suitable for the construction of high-rise buildings and large-area concrete pouring projects. Reduce construction cost, improve concrete pouring quality and construction progress.

For the safety of construction personnel, the safety operation process of wet concrete spraying manipulator is specially made:
1. It is strictly forbidden to use the manipulator as a crane or lifting platform.

The operator of the delivery pump should concentrate on the pumping construction and pay attention to the reading of the pumping pressure gauge at all times. Once the reading of the pressure gauge suddenly increases, the pump should be reversed for 2 to 3 strokes immediately, and then the pump should be corrected. The blocked pipe can be eliminated . If the blocked pipe has not been eliminated after reverse pumping (forward pumping for several operating cycles),

At present, the concrete wet concrete spraying truck shotcrete truck, as a kind of concrete machinery and equipment favored by the majority of construction parties, has greatly improved the efficiency of construction.