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Since the 1960s, western developed countries have begun to implement wet spray technology, and various wet spray machines have been developed and put into use one after another. At present, in some western countries, wet spraying machine has become the main equipment for shotcrete operation, and the application rate in many countries reaches more than 80%. In China, wet spraying technology started late, and the market was still blank until the early 1990s.

When installing the concrete delivery pump, the user needs to consider the source of the concrete. If it is commercial concrete, the mixer truck supplies the material, and the delivery pump can be installed on the spot, as long as it is convenient to feed and take over. If concrete is mixed on site, the location of the mixer needs to be determined according to the feeding method and site of the mixer.

Small concrete pump is a kind of industrial equipment commonly used by many construction units today, which can improve the efficiency of engineering construction. At the construction site, after the concrete pump truck is used for a period of time, the piston life of the concrete pump truck will be too short. So, how to solve the problem that the piston life of concrete pump truck is too short? In general, the factors that cause the piston life of small concrete pumps

Concrete boomr pump is a construction equipment that relies on pressure to transport concrete through pipelines. It combines the production of ready-mixed concrete with pumping construction, and uses a concrete mixer truck for intermediate operation, which can realize continuous pumping and pouring of concrete. It is equipped with special Concrete can be continuously transported horizontally and vertically along the pipeline. Concrete boom pumps are divided into various models,

Concrete construction engineering has received extensive attention in today's social development. The use of concrete delivery pumps provides support and assistance for concrete construction. This is an equipment project developed and produced by our company for many years. The following is the cleaning work of the concrete pump for your reference.

Concrete line pump is a kind of construction machinery. Because its working environment is relatively poor, it is more necessary to do daily maintenance and maintenance work. Among them, lubrication is a very important work. Concrete floor pumps are divided into manual lubrication and automatic lubrication. part, the specific analysis is as follows:

At present, a kind of mechanical equipment that many construction parties use a lot - a small concrete pump, which greatly improves the construction efficiency. If the pump driver does not operate properly in the project, it is easy to cause the pump to roll over, which is a problem that many construction parties are very concerned about. So, how can the small concrete pump truck prevent rollover?

1 Improper operation can easily lead to blockage of the pipe
1.1 The operator is inattentive
The operator of the transfer pump should concentrate on the pumping construction and always pay attention to the reading of the pumping pressure gauge. Once the reading of the pressure gauge suddenly increases, they should immediately reverse the pump for 2 to 3 strokes. . If the reverse pump has been carried out and the pump is being pumped for several operation cycles,

In the construction site, all kinds of machinery and equipment are overwhelmed, and the safe use of concrete placing boom machine machinery and equipment is particularly important.

In the construction site, all kinds of machinery and equipment are overwhelmed, and the safe use of concrete placing boom machine machinery and equipment is particularly important.

Concrete pumps play the role of transporters in large-scale concrete projects such as high-rise buildings, highways, and overpasses, so they are very important. For concrete pumps, the correct and safe use is equally important. In the daily operation process, how should we use the concrete pump correctly?

The concrete pump cutting ring mainly cooperates with the rubber spring, and the gap is automatically compensated by the rubber spring and the pressure self-balance, so that the floating cutting ring has a self-sealing effect, thereby increasing the conveying pressure of the S-pipe valve. However, when the concrete pump is used for a long time, the cutting ring of the concrete pump is prone to wear.

Concrete pump has now become an indispensable member of engineering construction. In addition to the promotion of urban and rural construction, its own advantages are also very obvious, reducing labor force, shortening construction period, and improving project progress efficiency. The correct use of the concrete pump can not only improve the work efficiency, but also avoid the blockage of the concrete pump. Common concrete pump easily blocked positions and elimination methods are as follows:

How to maintain and repair the wet concrete spray machine manipulator? Proper repair and maintenance of the wet sprayer can greatly increase its service life.

The wet spraying manipulator should be properly repaired and maintained to increase its service life. How to maintain and repair the wet spraying manipulator?

The wet spraying manipulator should be properly repaired and maintained to increase its service life. How to maintain and repair the wet spraying manipulator?

Requirements for concrete slump in fine stone concrete pumping
When the concrete with a slump of 10-15 cm is dumped into the hopper, its surface is easily broken; when the slump is less than 10 cm, the concrete is completely broken after tilting, and has a serrated edge, which breaks vertically. into thick blocks;

To improve the pumpability of concrete, it is necessary to increase the amount of cement, use a larger water-cement ratio and sand ratio, and use a stricter aggregate gradation, which means an increase in cost or a decrease in quality. A more economical and effective way is to use admixtures to improve the pumpability of concrete. There are many types of additives, among which the admixtures that can improve the pumpability of concrete include air-entraining agents,

How to maintain and repair the wet spray manipulator? Proper repair and maintenance of the wet sprayer can greatly increase its service life.

The maintenance before and after use of the wet spraying machine requires frequent maintenance, so as to maintain its high performance, as smooth as new, reduce the number of failures, and bring greater benefits to the company. The same goes for wet sprayers. As the most advanced shotcrete support equipment in China, the concrete wet shotcrete machine has a wide range of uses, and the construction environment is also extremely complex,

The maintenance before and after use of the wet spraying machine requires frequent maintenance, so as to maintain its high performance, as smooth as new, reduce the number of failures, and bring greater benefits to the company. The same goes for wet sprayers. As the most advanced shotcrete support equipment in China, the concrete wet spraying machine has a wide range of uses and the construction environment is also very complicated

Requirements for Cement Conveyed by Fine Stone Concrete Pump
1. Reduce the frictional resistance of the mechanical part of the concrete with the pump, the conveying pipeline and the interior of the concrete and have good fluidity.

Fine aggregates can be divided into river sand, sea sand, mountain sand and artificial crushed sand according to their sources. The concrete using the former has better pumpability; the artificial sand has a rough surface and poor sand shape, so it is necessary to add some natural sand to improve its proportioning properties, but the artificial sand has better water retention, which can reduce the bleeding and segregation of concrete.

Requirements for Concrete Aggregate Conveying by Fine Stone Concrete Pump

2. Coarse aggregate

Pumped concrete can be made of pebbles, crushed stone or a combination of pebbles and crushed stone.

The laying of the delivery pipe of the pumping wet spray trolley First, whether the laying of the pipeline reasonably affects the construction efficiency and quality of the pumped concrete. The pumping pipeline generally follows the "principle of short straight line between two points", and reduces pipe bends to a great extent. And the utilization rate of the hose, when using the elbow, try to avoid the bending of the elbow is too large.

If the pressure of the concrete pump is too high and unstable, and the oil temperature rises. When the conveying pipe vibrates obviously and the pumping is difficult, it is not allowed to pump forcibly, and the cause should be immediately identified and eliminated. The delivery pipe can be bent first by hitting it with a mallet. Conical pipes, etc., and pump at a slow speed or reverse pump to prevent clogging.

. Concrete pump is a very commonly used concrete pump at present, and has been widely used by major construction units. In the construction process, according to the different engineering conditions and construction environment, users usually use different forms of small concrete delivery pumps.

This scheme has the advantages of simple construction and low construction cost, but the pumping pressure of this scheme is too high, which is easy to cause leakage, leading to many problems such as concrete segregation and pipe blockage. The requirements are extremely high; at the same time, once the project is completed, the pump is not economical for other general projects.