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Time of issue:2021-03-05 15:21:05

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Concrete Mixer

A concrete mixer is a machine that mixes and mixes cement, sand and gravel aggregate, and water into a concrete mixture It is mainly composed of a mixing drum, a feeding and unloading mechanism, a water supply system, a prime mover, a transmission mechanism, a rack, and a supporting device According to the nature of the work, it is divided into intermittent type (batch type) and continuous type; According to the mixing principle, it is divided into self falling type and forced type; According to the installation method, it is divided into fixed type and mobile type; According to the discharge method, there are tilting and non tilting types; According to the mixing drum structure, it is divided into pear type, drum type, double cone type, disk vertical shaft type, and circular groove horizontal shaft type

Description

brief introduction
The concrete mixer comprises a power mechanism connected to a transmission mechanism through a shaft and a drum driven by the transmission mechanism. A gear ring arranged around the drum body is installed on the drum body, and a gear meshing with the gear ring is arranged on the transmission shaft. The utility model has a simple and reasonable structure, and can effectively overcome the sliding phenomenon between the carrier wheel and the mixer drum in rainy and foggy weather after the engagement of gears and gear rings; The adopted transmission mechanism can further ensure the elimination of slipping between the carrier wheel and the mixer drum.
Classification:
According to the nature of the work, it is divided into intermittent type (batch type) and continuous type; According to the mixing principle, it is divided into self falling type and forced type; According to the installation method, it is divided into fixed type and mobile type; According to the discharge method, there are tilting and non tilting types; According to the mixing drum structure, it is divided into pear type, drum type, double cone type, disk vertical shaft type, and circular groove horizontal shaft type.
1. By job nature:
(1) Periodic work mixer;
(2) Continuous working mixer.
2. According to the mixing principle:
(1) Self falling mixer;
(2) Forced mixer.
3. According to the shape of the mixing drum:
(1) Drum type;
(2) Cone type;
(3) Disc type.
4. According to the working transmission
(1) Friction drive commonly known as friction mixer
(2) Gear transmission commonly known as ring gear mixer
In addition, mixers are also divided into split cylinder type and circular groove type (i.e. horizontal shaft type) mixers.
describe
The inner wall of the mixing drum of the self falling concrete mixer is provided with mixing blades arranged radially. During operation, the mixing drum rotates around its horizontal axis, adding materials to the mixing drum, being lifted to a certain height by the blades, and then falling by its own weight. This cycle of motion achieves a uniform mixing effect. The structure of the self falling concrete mixer is simple, and generally it mainly mixes plastic concrete.
Forced mixer This type of mixer is divided into two types: vortex paddle type and planetary type. After the 1870s, with the application of lightweight aggregate, a circular groove horizontal shaft type forced mixer appeared, which is divided into single horizontal shaft type and double horizontal shaft type, and has the characteristics of both self falling and forced mixing. Its stirring blades have low linear speed, good wear resistance, and low energy consumption, and have developed rapidly. The rotary arm frame in the mixing drum of a forced concrete mixer is equipped with mixing blades, which add materials to the mixing drum and form a cross flow under the strong stirring of the mixing blades. This mixing method is far more powerful than the self falling mixing method and is mainly suitable for mixing dry and hard concrete.
The continuous concrete mixer is equipped with spiral mixing blades, and various materials are continuously weighed according to the mix ratio before being fed into the mixer. The mixed concrete is continuously discharged outward from the discharge end. This type of mixer has a short mixing time, high productivity, and remarkable development.
With the development of concrete materials and construction techniques, many new types of concrete mixers have emerged, such as steam heated mixers, supercritical speed mixers, acoustic wave mixers, swing disk mixers without mixing blades, and secondary mixing concrete mixers.