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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.

The fine stone concrete pump is a special concrete pump, which is welcomed by the majority of construction parties because it is widely used in floor heating projects and floor construction. So at the construction site, what are the pumping requirements for the fine stone concrete pump? Now let's take a closer look.

The service life of concrete pumps has always been a concern of the majority of construction parties. If you want to extend the service life of concrete pumps, you must pay attention to the maintenance of concrete pumps. Many customers only know to pay attention to daily maintenance, but how to maintain and check?

In the construction of concrete pumping, the cleaning of concrete is an essential and important step after pumping. A good cleaning method can not only clean the pipeline, but also transport all the concrete in the pipeline to the pouring site, not only does not waste concrete, And economical and environmentally friendly. There are three main types of water washing methods commonly used in S-tube valve concrete pumps, which are described as follows

Shotcrete machine is the core equipment in shotcrete construction, and is widely used in related shotcrete support projects such as construction, municipal administration, railway and highway tunnels, foundation pits, mines, and slopes. With the rapid development of underground spaces such as highway and railway tunnels, urban subway tunnels, and mining resources, the demand for concrete shotcrete is increasing

The concrete placing boom is a concrete equipment for conveying and distributing, which is connected with the outlet of the concrete drag pump.
As an auxiliary equipment of the concrete pump, it is connected by a standard conveying pipe, just like a manipulator, which can quickly and accurately deliver the concrete to any pouring part of the working surface for continuous pouring, expand the concrete pumping range, and effectively

Concrete wet concrete spraying shotcrete truck is a special shotcrete support equipment that sprays ready-mixed concrete to the sprayed surface at high speed, and forms a concrete support layer through rapid setting.

The concrete placing boom adopts a 360-degree full-rotation boom-type placing structure. The whole machine is easy to operate, flexible to rotate, and has the characteristics of high efficiency, energy saving, economy and practicality. Concrete placing machine is to expand the scope of concrete pouring.

Mobile Concrete Placing Boom Features:
1. There is a dragging structure, which can be quickly and easily moved to the required position in the construction site;
2. The short-distance construction site can be pulled by the tractor to transfer the equipment, and the equipment transfer can be completed in a short time;
3. It can be applied to construction sites restricted by tower cranes or lifting equipment, and is very efficient;

Mixing pumps are often used in the current construction of new rural areas. They can not only perform on-site mixing, but also transport concrete. It is suitable for reservoir construction, residential building construction, tunnel engineering, and water conservancy engineering construction projects. Many people are very concerned about the operating conditions of concrete pumps when they are in use, but few people pay attention to the correct way

QZHP-3016E concrete wet spraying trolley is suitable for large-scale highway, railway tunnel construction, slope support construction, large-scale water conservancy and hydropower project tunnel, culvert construction, and subway, various civil and military construction projects, etc., to meet the construction requirements of shotcrete .

Concrete delivery pump, also known as concrete pump, consists of pump body and delivery pipe. It is a machine that uses pressure to continuously transport concrete along the pipeline. It is mainly used in house construction, bridge and road construction. Concrete pump is a construction equipment that relies on pressure to transport concrete through pipelines. It is equipped with special pipelines,

Advantages of installing an air compressor: Saintyol DAWIN 3016B concrete wet spray trolley is equipped with a 75kw air compressor. There is no need to connect additional air sources on the construction site. It is fast and convenient to transfer and move vehicles. Greening, slope protection and other projects provide a strong guarantee, high efficiency, good stability, fast movement and other advantages, is a good helper for tunnel construction.

Saintyol DAWIN small wet spraying machine has high construction efficiency, low dust concentration in shotcrete operation, low rebound rate, accurate water-cement ratio control, fully hydrated cement, high strength of shotcrete, great cost savings, no dust generation, In turn, the impact on workers and the environment is not large, and it is suitable for various working environments.

Most of the fine stone concrete pumps use a hydraulic system. The piston rod in the main oil cylinder generates mechanical pressure under the power. When the piston retracts, it generates self-priming in the conveying cylinder. The concrete in the hopper is under the action of atmospheric pressure and the boost of the stirring blade. Under the action, it is sucked into the conveying cylinder through the suction port of the slide valve.

The operator of the concrete mixing pump should check whether the thickness of the brake pads of the braking system is too thin. If they are worn to a certain extent, they must be replaced. It should be noted that if the brake drum wears too much, even if the thickness of the brake pads is full, it may cause The brake camshaft travel is too long, causing the brake shoes to die. Also check to see if the brake camshaft grease passages are not blocked.

The general concrete spraying process is divided into dry spraying and wet spraying. For dry sprayers and small wet sprayers used for manual manual operation, the amount of rebound and drop of the spray is still very easy to control. If there is a large amount of falling, it is the problem of the ratio of sprayed concrete and the accelerator. For large wet spraying machines (manipulators), there are many reasons for falling sprayed concrete.

With the construction of various 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 sprayer is the main equipment for this operation. There are three major problems with dry sprayers: ① large dust, ② more rebound, and ③ poor quality. The country is now vigorously promoting wet wet spraying, which has the advantages of low dust,

Precautions for pump operation:
1. The place where the pump truck is in place is flat and solid, and there are no obstacles around. Pump trucks must not be parked on slopes. The parking position meets the needs of pouring, and does not obstruct each other with other on-site machinery, which affects the construction progress and the safety of construction workers.

As a kind of concrete conveying equipment developed for the characteristics of floor heating construction, the fine stone concrete pump is widely expected by construction units because of its large-area and high-efficiency construction in the filling layer or mortar filling layer of the floor heating project. So why does the fine stone concrete pump work so well? Now we introduce the characteristics of the major components of the fine stone concrete pump as follows.

The fine stone concrete pump adopts a hydraulic system. The concrete pump has the characteristics of long concrete cylinder stroke, high vertical distance for conveying concrete, and long distance for horizontal conveying concrete. The fine stone concrete delivery pump, ground pump and drag pump all adopt a continuous lubrication system, which solves the damage to the fine stone concrete pump due to lack of lubrication during the process of conveying concrete.

Concrete pump is mainly composed of truck chassis and power take-off device of pump truck, concrete pump, distribution device, outrigger device, hydraulic system and cleaning system. Since there are so many devices, which device plays the key role? Qingke Heavy Industry has summarized the following points through years of experience: