What are the characteristics of batch mixing tank?

Drum mixer, also known as self-falling mixer, is to put the mixture in a rotating mixing drum, with the rotation of the mixing drum, the blades in the drum lift the mixture to a certain height, and then rely on its own weight to scatter it freely. This is done again and again until well mixed. This type of mixer generally mixes plastic and semi-plastic concrete.

The compulsory mixer is a stirring drum that does not move, but is forced by the blades evenly placed on the rotating shaft in the drum. This kind of mixer mixes ***, with high production efficiency; However, the power consumption is large, and the blades wear out quickly. It is generally suitable for mixing dry hard concrete.

Generally speaking: self-falling, cylinder turning; Forced, shaft rotation. Concrete mixer is divided into two kinds of self-falling drum type and compulsory mixer, the former does not have a mixing fan blade, only relies on the rotation of the whole pot to make the concrete achieve the mixing effect, suitable for materials with a small slump, and the latter is an independent motor, with fan blades in the pot, and the concrete is mixed by the rotation of the fan blades.

The batch mixer first puts the raw materials into the mixer hopper in proportion, and then mixes; The continuous mixer is to put different materials into the designated hopper, and the aggregate is sent to the mixer for mixing according to the set bar mix ratio by computer digital control. Because the mixture mixed by the continuous mixer has the characteristics of good uniformity, stable work, large output, low failure rate, and little influence by human factors, it is more conducive to the control of the construction quality of high-grade roads, so it is required in the construction specification. From the point of view of the state of the stirring medium, the agitator is divided into solid stirring and liquid stirring.

In terms of purpose, there are reactions, mixing, separation, heat transfer, and so on. So the scope of the question you're asking is too big. You have to first determine which aspect you want to know about the agitator used, as for the characteristics you say, it should refer to the characteristics of different agitator paddle forms, according to the paddle form of the type of the paddle is too many types.

It has the advantages of stirring, fast stirring speed, high production efficiency, easy operation and safety. However, the parts are seriously worn, and high-strength alloy steel or other wear-resistant materials are generally used as the lining, which is mostly used in centralized mixing plants. If you need to mix a large amount of concrete, it is best to use a compulsory mixer.

At present, many construction units mostly use compulsory mixers, because this kind of mixer mixes quickly, and the concrete that comes out is ***! It can also be used to work with electricity when it is convenient to use electricity, and the concrete mixer can be started by using electricity to ignite, which is more convenient to use. The above several are mainly to eliminate collapsibility and increase the composite bearing capacity, all of which belong to composite foundations; The single pile is mainly carried by the concrete cast-in-place pile drilled into a hole by rotary drilling.

The above is the classification of the process, the specific suitable for how many floors of the building is not clearly defined, mainly depending on the geological conditions and the superstructure, who can give you a clear explanation here are Mengren. <>

Self-falling mixers: The mixing drum of this mixer is placed vertically. With the rotation of the drum, the concrete mixture is flipped and mixed in free fall in the drum, so as to achieve the purpose of mixing. Self-falling mixers are mostly used to mix plastic concrete and low fluidity concrete.

The barrel and blades are less worn and easy to clean, but the power consumption is large and the efficiency is low. The mixing time is generally 90 120s tray. There are several sets of blades in the drum drum of the compulsory mixer, and the blades rotate around the vertical or horizontal shaft during stirring, and the material is forcibly stirred until it is evenly stirred.

This mixer has a strong mixing effect, which is suitable for mixing dry hard concrete and light aggregate concrete, and can also mix fluidity concrete. <>

1. The batch mixing equipment is a device for feeding, stirring, and discharging repeatedly, rather than constantly stirring.

2. The specifications of batch concrete batching plant are named according to its theoretical production per hour, and the commonly used specifications in China are: HZS25, HZS35, HZS50, HZS60, HZS75, HZS90, HZS120, HZS150, HZS180, HZS240, etc. Such as:

HZS25 refers to the mixing plant with a production capacity of 25 cubic meters per hour, and the main machine is a twin-shaft compulsory mixer. If the main engine is used for a single horizontal shaft, the model is HZD25.

3. The mixing plant can be divided into a single machine station and a double machine station, as the name suggests, a single machine station is a mixing host for each mixing station, and the double machine station has two mixing hosts, and each mixing host corresponds to a discharge port, so the double machine mixing plant is 2 times the production capacity of the single machine mixing plant, and the naming method of the double machine mixing station is 2hzs, such as 2hzs25 refers to the double machine mixing plant with a mixing capacity of 2 * 25 = 50 cubic meters per hour.

1. The batch mixer first puts the raw materials into the mixer hopper in proportion, and then mixes. The batch mixer makes the whole mixture carry out a three-dimensional vortex movement. In addition, at the junction of the two stirring cycles, the materials flow strongly to each other.

The energy introduced is optimally converted into the vigorous relative movement of the entire mixture. Thanks to a perfectly designed agitator and a three-dimensional motion profile that matches the requirements, the mixer can achieve better mixing results at lower speeds than comparable single-shaft or power mixers. In this way, the particle structure of the sensitive components in the formulation is preserved.

If unwanted agglomerates need to be decomposed, a vortex can be added to the batch mixer along the longitudinal direction of the mixing tank.

2. Diagram of batch mixer:

As the name suggests, feeding, stirring, and discharging are carried out repeatedly, not constantly stirring.

Intermittent stool mixing, that is, intermittent mixing equipment, is a device for feeding, stirring, and discharging repeatedly, rather than constantly stirring. At present, the commonly used specifications in China are: HZS25, HZS35, HZS50, HZS60, HZS75, HZS90, Hail HZS120, HZS150, HZS180, HZS240, etc.

For example, HZS25 refers to a mixing plant with a production capacity of 25 cubic meters per hour, and the main engine is a twin-shaft compulsory mixer.

Characteristics of batch mixing:

1) The main machine works smoothly: the raw materials enter the mixer evenly over a relatively long period of time. No intermittent burst feeding process.

2) Stable feeding of finished products: concrete is evenly fed into the car for a long period of time, and there is no intermittent sudden unloading process.

3) Less space occupation: It reduces the storage hopper of large finished products and aggregates, with low height and small footprint.

4) Low wear of wear-resistant parts: smooth stirring without impact, and less stirring amount at the same time.

5) Low energy consumption: the installed power is small, the amount of mixing space is small, and a small amount of raw materials enters the mixer evenly and is easy to mix evenly.

6) Low use and maintenance costs: less structural links, short belts, and stable work.

Sand and gravel system: includes three feeding sand and gravel hoppers (two or four according to different requirements), which are used for metering and feeding of sand and gravel. Each sand and gravel bucket is composed of a collection hopper, a load cell, a reducer, a feeding belt and ancillary equipment.

Powder system: It is composed of storage bin, storage bin butterfly valve, lifting screw, metering bin, disc feeder and other parts. The powder storage bin includes the main bin and the auxiliary silo, with a single volume of 100t-300t.

The main bin and auxiliary bin are equipped with automatic arch breaking device and material level signal indication device. The powder storage bin is also equipped with a dust removal system. Water & Admixture System:

It consists of an admixture tank, a basin (or tank), a pumping station, a water and admixture weighing hopper and a pipeline. Transfer-Mix-Storage System: It consists of a belt conveyor, a mixer, and a mixer rack.

The sand and gravel are loaded onto the belt by the batching machine and enter the mixer. Fly ash and cement are fed directly into the mixer through the pan feeder and aggregate auger on the metering bin. Low-voltage electrical appliances and automatic control systems:

It includes three parts: power cabinet, sensor and control center. Several advantages of multi-dimensional continuous compulsory cement concrete batching plant Large output and high efficiency: continuous and stable work, the single machine output of continuous batching plant is high.

Stirring evenly: The mixture entering the mixer is a homogeneous material, and the mixing process of the mixture in the mixer is a mixing and hydration process, so the mixing time can be shortened. No slurry leakage, little wear:

The feed end of the continuous mixer is dry material mixing and both shaft ends are equipped with counter-spirals. Therefore, there is no leakage problem. The mixer also does not have high requirements for wear-resistant materials.

Low fault: The number of starts and stops of all equipment in the continuous mixing plant is only 1 7-1 3 of that of the gap mixing plant, so the equipment has a long service life and a low failure probability.

1.performance marking of construction concrete; This is how to choose what kind of agitator to use. For example, the water conservancy project must use the compulsory mixing host. In addition, the batching station and storage bin should also be selected according to the type of concrete material that can be mixed.

2.the amount of tasks to construct concrete and its duration; Use these two parameters to select the size of the plant. Let the total task volume of concrete be m; The number of concrete pouring days is t; The number of hours worked per day is h; If the utilization coefficient is k, the specification of the mixing plant should be selected x=m (t*h*k), where k is.

In the selection, the transportation status of the finished concrete should also be considered. For example, whether it is direct pumping or vehicle transportation.

The volume of the conveying vehicle is also an important basis for determining the model of the mixing plant.

3.construction environment and construction objects; When choosing to purchase a concrete batching plant, the impact of the construction object and the construction environment should be fully considered, so as to ensure the smooth construction and construction quality. We recommend that you be prepared in the following situations.

a.When the construction site needs to pour a large amount of one-time pouring, the quality requirements are high, and there is no nearby mixing plant that can be reinforced, it is best to choose two smaller mixing plants, or choose a main and one pair of twin machine preparation. b.

When the construction site is inaccessible and it takes a lot of time for maintenance personnel to enter and exit the construction site, it is best to choose to use two machine stations of the same smaller specification, or prepare enough spare parts to ensure the smooth progress of construction. c.When the construction site is scattered, but the distance between the construction sites is not too far, the conveying radius of the concrete mixer truck does not exceed half an hour's drive, and the dump truck conveys no more than 10 minutes' drive.

It is best to use multi-station centralized mixing to improve the utilization rate of the mixing plant and the economic benefits of construction.

4.quality of operators; Generally speaking, the structure of the small batching plant is simpler, and the control system is also simpler, so the requirements for operation and maintenance personnel are low. The larger station has a complex structure and a high degree of automation, so the requirements for operators are also high.

Therefore, in addition to the previous factors, you should also consider this factor when purchasing a mixing plant.

5.formulation options; In general, manufacturers have mature product formulations, such as specifications, quantities, varieties, etc. You may make your special request when ordering the product.

We will do our best to accommodate your request. However, when purchasing products, do not be greedy, which will cause unnecessary waste of economy. In addition, in addition to referring to the ** of different manufacturers when purchasing products, special attention should be paid to the preparation list of different manufacturers.

In addition to the above specifications, varieties and quantities, the most important thing is the manufacturer of accessories. With all of the above, you can always choose the most suitable model for you. When choosing a model, do not go for the best, but for the most suitable and meet your needs, because this choice is the most economical and effective.