What is a mortar assembly is known to every specialist in the field of construction. For consumers, it is an opportunity to get a fresh solution near the construction site. For entrepreneurs, this is a profitable business where demand is high enough.
Description of different types of mortar nodes
To date, two varieties of mortar nodes are known:
The first is the technological chain, which is organized in close proximity to large-scale production of reinforced concrete products. They are focused on the production of certain brands of mixtures.
As for the mobile options, they are used at the construction site, they can be rented. There are also semi-stationary nodes that can be partially disassembled and moved within the site.
Description of mortar units based on the principle of operation
The solution unit can also be classified according to the features of the mixture preparation technology. According to her, such mini-factories are divided into cyclic installations and those that provide continuous operation. In the first case, we are talking about aggregates that prepare concrete in separate batches. This indicates that reloading of the components may be carried out after the mixer is released.
Installations of continuous operation allow you to get a larger volume of solution in a certain time. This is due to the fact that the supply, subsequent mixing and unloading of the solution are carried out in parallel. The disadvantage of such installations is the lack of the ability to quickly switch the device to the manufacture of mixtures of different brands. In addition, the solution is not always stable at the outlet.
The solution node can also be classified according to the seasonality of use. Some mini-factories can be operated only in the summer, others - all year round. For year-round production of the solution, winter modifications are used. They have heat-insulating sheathing and have heating systems. However, even such structures are characterized by a almost two-fold decrease in productivity in cold time, this is due to the fact that a huge amount of time is spent on heating the mixture components.
Specifications
The solution unit consists of several modules, among them:
- mixer hopper;
- tanks with strain gauges and dispensers;
- tank with filtration system and water;
- Control block.
To ensure full operation, the node must have transport modules, namely:
- clamshell lifts;
- conveyors;
- skip hoists.
Without reservoirs for loading and storing dry components, as well as a vibrating machine, auxiliary mechanisms and services, the mortar assembly remains an ordinary concrete mixing plant. When choosing a mortar-concrete unit, it is necessary to pay attention to the main technical characteristics, including power and performance.
Mini-plants are capable of producing approximately 10-25 m 3 of concrete per hour. If we are talking about standard installations, then they will give out 400 m 3 / h. The characteristics of the working elements can be different, so when ordering it is important to pay attention to the following parameters:
- number of containers;
- tank volume;
- the presence of metering units;
- type of mixing hopper.
As for the number of containers, placeholders of different fractions will be located in them.
Description of the salt-salt node
The solution-salt unit is intended for the preparation of solutions with different specific gravities. The composition should be free from insoluble impurities of suspended particles that would be harmful to the oil reservoir. These facilities are used to obtain fluids that are used for killing wells.
The nodes operate in a semi-automatic mode, and operability is ensured by the presence of maintenance personnel. The equipment is equipped with flow meters and instrumentation, which allow you to control the cooking process visually and remotely.
Solution preparation
The preparation of solutions on concrete-mortar units is carried out according to a certain technology. It may involve the use of a continuous or volumetric dosing principle. Dosing accuracy for cement is 2%, for water - 1%, for milk of lime - 0.5%. As for sand, the accuracy in this case can vary depending on its moisture content in the range from 1 to 3.5%.
A tape dispenser is used for dosing sand, and auger is used for cement. The fluid is supplied at a constant pressure, which is provided by the tank. A horizontal mortar mixer ensures mixing of the components. The finished solution passes through a vibrating screen and is fed to the place of consumption using a mortar pump. Mortar units are economical, and their use reduces the cost of preparing the mixture in the range from 30 to 50%.
Equipment for greenhouses
The solution nodes of greenhouses are used for preparing a nutrient solution, conducting and planning drip irrigation in greenhouse production. Such devices allow you to organize the flow of the solution for individual zones according to the time of irrigation and the flow rate of the solution.
Using a specific program, you can plan watering during the day. Depending on the capabilities of the system, the program allows you to start watering, taking into account several types of influences. Among them are the following:
- time;
- amount of solar radiation;
- substrate moisture level;
- temperature.
Conclusion
A mixing hopper must be present in the mortar units. It may involve a spare drum that works with low power consumption. The preparation of hard mixtures is impossible, because the gravitational tank will not cope with plastic solutions.
A special movable container is used for forced mixing, where the blades are involved. In this case, the wear of the working elements is faster, and energy consumption increases.