Summary

Vertical single-conical ribbon Mixer dryeris a multi-function fully enclosed vertical vacuum drying equipment integrating drying, crushing and powder mixing. Its drying efficiency is 3-5 times that of the "double cone rotary vacuum dryer" of the same specification. It is mainly used in the drying of powders in the pharmaceutical, chemical, pesticide, food and other industries. It can realize the closed and continuous operation of the whole process. It is the preferred equipment for drying in the above industries.

Product Details About Vertical single-conical ribbon Mixer dryer

Vertical single-conical spiral ribbon vacuum dryer  consists of the conical shape vessel body, drive unit on the top, helical blades on the central shaft and a discharge valve at the bottom.

The spiral stirrer moves solids upwards along the vessel wall, where it then (due to the force of gravity) falls down to the conus bottom. In addition are during this process solid particles thoroughly heated, which leads to a homogeneous product.

Vertical single-conical ribbon Mixer dryer is a multi-function fully enclosed vertical vacuum drying

Process characteristics   

Drying and mixing of powder is an important link in the production of APIs, so the selected dry mixing equipment is the guarantee of the quality of its final product, and it is also the key to determine the production and operation costs. The single cone spiral vacuum dryer newly developed by our company leads the drying technology of the domestic chemical and pharmaceutical industry with its unique structure and absolute advantages.

1. The raw materials of raw materials processed in the production are mostly heat-sensitive, so agglomeration of materials often occurs during the drying process, which requires shortening the drying time and drying efficiency as much as possible.

2. In the production of materials, the purity of the circulating gas used in the drying process will have a great impact on the quality of the materials. The equipment uses a unique gas supply technology to reduce the impact of the gas on the drying process to a low level. From the point of view of operating economy, the desired process pipeline can be fixedly installed, thereby saving the rotation space similar to the double cone dryer.

3. In order to make the whole process continuous and reduce the leakage of materials at the same time, the solid discharge flow of the dryer is controllable. This can reduce the workload of manual operation and loading and unloading in the cleaning area, and prevent the phenomenon of external flushing of materials.

 Structure and characteristics

1. The working process of the cone vacuum screw belt dryer is intermittent batch operation. After the wet material enters the silo, heat is supplied through the inner jacket of the cylinder wall and the propeller, so that the heating area reaches 140% of the entire container area, and the material is heated and dried. . And choose the corresponding cone type dry mixer model (working volume) to achieve the ideal drying effect. The mixing dryer adopting the upper drive structure has the characteristics of drying and mixing, as well as sufficient space, which is more convenient for users to carry out maintenance and repair.

2. Smooth operation and protection of crystal form:

Vertical single-conical ribbon Mixer dryer does not use any auxiliary tools during the drying and mixing process. It only uses the revolution and rotation of the cone-shaped stirring screw, which makes the material in addition to the lifting from the stirring screw and is continuously sheared and dispersed, ensuring the inside of the silo The material can get movement, and it can make the material not squeezed by any other external force except the lifting from the propeller, which avoids the ineffective friction between the powder and the equipment and the powder grain, which is often It is the main factor leading to the destruction of the crystal form of the material. This is the fundamental reason why LDG series Vertical single-conical spiral ribbon vacuum dryer  can keep the crystal form of the material intact during the operation.

3. The top drive eliminates the possibility of pollution caused by the shaft seal to the product:

Using top drive, relative to the bottom drive, the device can avoid the following disadvantages:

The stirring paddle must be disassembled with special equipment for cleaning and maintenance

Mixing paddle shaft seals are difficult to achieve true sealing without pollution, lack of quality assurance.

Low operating energy cost and high mixing efficiency:

Vertical single-conical ribbon Mixer dryer is driven by a motor. The design is unique. The spiral driven by the motor is used to lift the material, and there is no separate energy consumption for cutting. It is particularly worth mentioning that, in the mixing and drying process, the traditional mixing and drying equipment provides a belt-type stirring paddle. Its working principle is that during the stirring movement, the moving material is like a whole, and a large amount of energy consumption is used for the circular movement of the whole material, so the drying efficiency provided by this stirring is low. The LDG series of Vertical single-conical spiral ribbon vacuum dryer provides a conical spiral stirring. The entire stirring paddle moves circularly around the axis of the conical silo to ensure that the materials in different parts of the entire container can be stirred. To proceed, gradually lift the material at the bottom of the silo to the upper part of the container, and then let it fall naturally, so circulating. This stirring mode makes the materials in the container uniformly mixed, which eliminates the possibility of agglomeration of the materials during the drying process, and greatly improves the mixing and drying efficiency of the materials. And it has the advantages of wide processing range and low energy consumption per unit mass.

Simple operation and convenient maintenance:

The structure of the Vertical single-conical spiral ribbon vacuum dryer  is simple and effective, easy for the operator to understand, and the simple button control makes the operation process simple. Some repairs and maintenance work can be completed smoothly and quickly even without a professional. The manholes can be easily adjusted and maintained for the moving screw, which can be completed without complicated disassembly. The equipment has few wearing parts, and the driving unit such as bearing box is set on the top of the silo. The user can easily detach the entire unit during maintenance, and the space of the driving unit on the top is relatively abundant.

working principle

The machine is equipped with a heating jacket with a heating cone, and the heat source is hot water, thermal oil or low-pressure steam, so that the inner wall of the cone maintains a certain temperature. The variable-frequency speed-regulating motor drives the single-spiral belt agitator to rotate through a parallel helical gear reducer, and the animal material rotates along the cone-shaped barrel and is lifted from bottom to top. After the material reaches the high point, it will automatically flow to the center of the vortex and return to the center of the vortex. At the bottom of the cone-shaped barrel, the whole process forces the material to be heated in the cone-shaped barrel, relative convection and mixing, and the heat diffuses in the material, so that the material makes an all-round irregular reciprocating motion, and the material is the same as the single spiral belt and the barrel High frequency heat transfer is performed on the wall surface to achieve the effect of heating and drying in a short time. As a result, the water inside the material continuously evaporates. Under the action of the vacuum pump, the water vapor is led out by the vacuum pump. If you need to recover the liquid, you can add a condenser and a recovery liquid storage tank for recovery. After drying, open the lower discharge valve to discharge.

Technical Parameters

1.Rotating Joint

2.Reducer

3. Bearing Frame          

4.Trap 

5.Vessel head

6.spiral ribbon

7.Single-cone body  

8.Sampler

9.Material Discharge valve

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  LDG Series Vertical single-conical ribbon mixer dryer
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  LDG Series Vertical single-conical ribbon mixer dryer
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  LDG Series Vertical single-conical ribbon mixer dryer
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  LDG Series Vertical single-conical ribbon mixer dryer
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  LDG Series Vertical single-conical ribbon mixer dryer

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