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Rota Cone Vacuum Dryer

The Hywell Machinery Rota Cone Vacuum Dryers are one of the most energy-efficient, gentle, and cost-effective methods for drying solids to very low moisture levels. Because of the reduced vaporization temperatures possible under a vacuum, Rota Cone Vacuum Dryer is ideal for drying heat-sensitive products including food ingredients and pharmaceuticals. The clean double cone shape provides gentle unobstructed tumbling of the solids and complete discharge with minimal hang-up points. Vacuum leakage is minimized because there is only one seal on the vacuum line. The open design of the rota cone vacuum dryer makes both visual inspection and CIP simple. Rota cone vacuum dryers are also rugged enough to blend and dry powdered metals with bulk densities. Horizontal rotary cone vacuum dryers extend the range of drying applications by starting with pastes.

  • SZG
  • HYWELL
  • 8419399090
  • SUS304/SUS316L
  • Food/Pharmaceutical/Chemical
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Rota Cone Vacuum Dryers Introduction

The Rota Cone Vacuum Dryer is a high-efficiency horizontal rotary cone drying equipment that integrates drying, vacuum decompression, and mixed powder. This Rota Cone Vacuum Dryer is often named vacuum double cone dryer,  rotary cone vacuum dryer, double cone vacuum dryer, double cone rotary vacuum dryer, or double conical vacuum dryer.

The Hywell Machinery double cone vacuum dryer has a few advantages that make it suitable. It is a highly gentle dryer/mixer for minimal particle size degradation. The drying phase is by vacuum with a solvent recovery system to allow for the recovery of the solvents that were used to dissolve the active ingredients.  The discharge from the vessel of the rotary cone vacuum dryer is from the bottom of the cone by a complete port valve. It also allows for the entire batch to discharge quickly with minimal residual material left behind.

If some materials tend to agglomerate during drying but are not sticky. This related material can be considered for our company's conical paddle vacuum dryer. 


rotary vacuum dryer

Rotary Cone Vacuum Dryer

double Cone Vacuum Dryers

Rota Cone vacuum drying system


Rotary Cone Vacuum Dryers Description

SZG Series Rotary Cone Vacuum Dryer is a new generation drying device developed by our factory on the basis of combining the technology of similar equipment. It has two connecting ways, i.e. belt or chain. Therefore  Rotary Cone Vacuum Dryers are stable in operation. The special design guarantees two shafts realize good concentricity. The Rotary Cone Vacuum Dryer can carry out speed control and constant temperature control.

As for the working medium, it may be thermal oil or steam, or hot water. For drying the adhesive raw material, Hywell has designed specially a stirring plate buffer for you. The biggest volume of Rotary Cone Vacuum Dryers may be 8000L. Let heat source (for example, low-pressure steam or thermal oil, or hot water) pass through the sealed jacket. The heat will be transmitted to raw material to be dried through the inner shell; Under driving of power, the tank is rotated slowly and the raw material inside it is mixed continuously. The purpose of reinforced drying can be realized; The raw material is under a vacuum. The drop of steam pressure makes the moisture (solvent) at the surface of raw material reach the state of saturation and evaporate. The solvent will be discharged through a vacuum pump and recovered in time. The inner moisture (solvent) of raw material will infiltrate, evaporate and discharge continuously. The three processes of the Rotary Cone Vacuum Dryers are carried out unceasingly and the purpose of drying can be realized within a short time.


Vacuum Double Cone Dryer specifications


Model

Total volume (L)

Operation Volume(L)

Maximum loading (Kg)

Power

(kw)

Weight

(Kg)

SZG-100

100

60

30

1.1

650

SZG-300

300

180

90

1.5

1200

SZG-500

500

300

150

2.2

1450

SZG-1000

1000

600

300

3

2800

SZG-2000

2000

1200

600

5.5

3580

SZG-3000

3000

1800

900

7.5

5900

SZG-4000

4000

2400

1200

11

6450

SZG-5000

5000

3000

1500

15

7300

1.Hywell machinery reserves the right to the design without notice

2.All specifications of the vacuum double cone dryer are as accurate as is reasonably possible, but they are not binding.


Heating Method of Vacuum Double Cone Dryer

  For the heating method of the vacuum double cone dryer, it can use steam or hot water or heat transfer oil as a heat source. However, the above heat sources cannot be provided by the end user. Hywell machine can provide electric heating heat transfer oil furnace or electric heating hot water tank for the vacuum double cone dryers. The specific heating method of the vacuum double cone dryers can be designed according to customers.


Condensation Recovery Unit of Rota Cone Vacuum Drying Machine

If the material being dried contains a large amount of solvent or relatively expensive solvent. This Rota Cone Vacuum Drying Machine can be equipped with a condensation recovery device. The condenser of Rota cone vacuum drying machines is used to cool the solvent into liquid through the condenser and recover it to reduce losses. Or the material being dried contains a lot of toxic solvents. In order to avoid the impact of toxic solvents on the environment, The Rota Cone Vacuum Drying Machines can also be equipped with a condensation recovery device to recover the toxic volume to reduce environmental pollution.


Tube model condenser of vacuum double cone dryer

Hywell machinery has two types of vacuum drying condensers. The tube condenser of the vacuum double cone dryer is a relatively traditional condenser. The condenser is made from a plurality of seamless steel tubes arranged within the condenser shell. The seamless steel pipe is equipped with radiating fins to increase the condensation heat exchange area and thus increase the heat exchange efficiency. When the condenser is working, the cooling medium is input from the inlet of the condenser shell, and then the entire shell is filled with the cooling medium. The gas with the solvent is pumped out from the inside of the drying barrel of a vacuum double cone dryer by the vacuum pump, and then quickly condenses and becomes liquid through the seamless steel pipe soaked in the refrigerant, and then the condensed solvent liquid solvent is stored in the solvent storage tank. Other water vapors and a small amount of uncondensed solvent are discharged through the vacuum pump of the vacuum double cone dryers.


Hose wound tube condenser of double cone vacuum dryer

The other is a metal hose condenser. The condenser of the double cone vacuum dryer is undoubtedly the seamless metal hose that wraps around the inside of the condenser. Therefore, for the same heat exchange area, the outer side of the hose winding condenser is smaller than that of the tube condenser, and the cost is also cheaper. Now Hywell company almost all use this kind of hose around the tube condenser for the double cone vacuum dryers. When the condenser is working, the cooling medium is input from the inlet of the condenser shell, and then the entire shell is filled with the cooling medium. The gas with solvent is pumped out from the inside of the host by the vacuum pump of the double cone vacuum dryer, and then quickly condenses and becomes liquid through the seamless metal hose soaked in the refrigerant, and then the condensed solvent liquid solvent is stored in the solvent storage tank. Other water vapors and a small amount of uncondensed solvent are discharged through the vacuum pump of double cone vacuum dryers.



mixing vacuum dryer

Tube model condenser 

Hose condenser

Hose wound tube condenser



Double Cone Rotary Vacuum Dryer Construction Material 

Hywell Machinery is able to offer our SZG Series Double Cone Rotary Vacuum Dryer with contact parts to be built in SS304, SS316L, Titanium, Duplex stainless steel, etc. Electrical parts of the control system of the double cone rotary vacuum dryer can be adapted to the customer’s needs.

If some materials are highly corrosive need to be dried, such as materials with strong acid and strong alkali (PH <4 and >10). Hywell machinery's double cone rotary vacuum dryers can be lined with enamel for the contact material parts to increase the corrosion resistance of equipment (inorganic vitreous materials are melted and condensed on the base metal and a composite material that bonds firmly to metal).  The drying equipment industry is usually named lined with enamel dryers as enamel double cone rotary vacuum dryers or lined enamel double cone rotary vacuum drying machines.


Line enamel rotary vacuum dryer

Line Enamel Rotary Cone Vacuum Dryer

Lined enamel double cone vacuum dryer

Lined Enamel Double Cone Vacuum Dryer


How do the Rotary Conical Vacuum Dryer works

    The rotary conical vacuum dryer is a double-cone rotary tank. When the tank is in a vacuum state, steam or hot water is passed into the jacket for heating, and the heat is in contact with the wet material through the inner wall of the tank. The vapor that evaporates after the wet material absorbs heat is evacuated by a vacuum pump through a vacuum exhaust pipe. Since the tank body is in a vacuum state, and the rotation of the tank body causes the materials to continuously turn up and down, inside and outside, the drying speed of the materials is accelerated, and the drying efficiency of the rotary conical vacuum dryer is improved, and the purpose of uniform drying is achieved.


Double cone vacuum dryer Advantages

Hywell machinery SZG series Double cone vacuum dryer had the following advantages over conventional solutions. A double conical vacuum dryer offers many benefits including:

1. Double conical vacuum dryer can dry temperature-sensitive products

   Because all liquids vaporize at a lower temperature at reduced pressures, it is possible to vaporize the liquids at very low temperatures.

 2. Double conical vacuum dryers have reduced energy

   Since the evaporation of the liquid under vacuum occurs at a much reduce temperature, the temperature differential is increased without raising the temperature.

3.  Double cone vacuum dryer have safe for friable products

The low speed at which double cone vacuum drying machines operate, just a few revolutions per minute, makes Rota-Cone Dryers ideal for delicate and friable solids such as crystals, macromolecules, or agglomerated solids.

4.  Double cone vacuum drying machine have more complete materials discharge

Unlike agitated dryers, Rota-Cone Dryers have the very little surface area and no agitator to trap product. The simple unobstructed 45-degree cone allows all products to freely discharge.

5.  Rota cone drying machine has Low Cross Contamination

Because there is only one moving part, the tumble dryer is an inherently simple and clean design, which improves yield and reduces cross-contamination.

6.   Rota cone drying machine has easily inspected the interior

All surfaces of the Rota Cone Drying machine can be inspected from one vantage point – the loading hatch.

7.  Rota cone drying machine has the single enclosed environment

Active pharmaceutical ingredients, drugs, and toxic chemicals are easily isolated in a vacuum dryer. Loading and discharging connections can be automated, sealed, and purged for worker protection. The closed system of the Rota cone drying equipment also assures the maximum collection of solvents is achieved, protecting operators and the environment.

8.  Rota cone vacuum drying equipment is avoid oxidation

The Rota Cone Vacuum Drying equipment is ideal for avoiding oxidation of chemicals and with the addition of an inert gas purge, an oxygen-free environment can be maintained.


Rotary cone vacuum dryer options

1.  Construction Material & Sanitary Finishes of rotary cone vacuum dryer:

We are able to offer our rotary cone vacuum dryers with contact parts to be built in Carbon steel, SS304, SS316/316L, Titanium, Duplex stainless steel, etc. Standard of internal and external finish can be adapted to the customer’s needs.

2.  Feeding & Discharge Options of Double Conical Vacuum Dryer :

A double conical vacuum dryer can have a variety of feeding & discharging methods that match the demands of the filling & production line.

3.  Drive Systems of Double Conical Vacuum Dryer:

Rotating cone vacuum dryers have a drive system by geared motor, belt or chain transmission, etc.

4.  Heating & Cooling Jackets of Double Conical Vacuum Dryer:

Double conical vacuum dryers are available with jackets for heating/cooling operation.

5.  Custom Engineered Dimensions of Double Conical Vacuum Dryer:

Dimensions of our double conical vacuum dryers can be defined according to the customer’s requirements.

6.   Rota Cone Vacuum Drying Machine Sizes:

Rota Cone Drying Machine from 100 to 5000 lit. total volume with bigger size as per request &. more.




fast clamp gauge of dryer

Fast clamp gauge

drive system of cone dryer

Driving system


Double Cone Vacuum Dryer Application:

The double cone vacuum dryer is suitable for vacuum mixing and drying of powder and granule raw materials of the pharmaceutical industry, chemical industry, foodstuff industry, etc. Particularly it is suitable for raw materials that have the following requirements:

1. The double cone vacuum dryer can use for thermal-sensitive raw materials that cannot be dried at high temperatures.

2. The double cone vacuum dryers can use for raw materials that are easy to oxidize and dangerous.

3. The double cone rotary vacuum dryer can use for raw materials that solvent and toxic gases are needed to recover.

4. The double cone rotary vacuum dryers can use for raw materials that have special requirements for crystal shape.

5. The rotary conical vacuum dryer can use for raw materials that have special requirements for the content of residual volatile.


blending vacuum dryer
rotary vacuum drying machine



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