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Shandong Bozhong Vacuum Equipment Co., Ltd.

Add:No.37 Bozhong Road,Ma Shang Town,Zhang Dian District,Zibo City,Shandong Province

Tel:+86-533-2530388
         +86-533-2530311
      +86-533-2802841

Fax:+86-0533-2530399

Internet fax:400-8266163-04400

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ZGP series harrow type vacuum driers

Download the brochure of ZGP series (pdf)

 

  ZGP harrow vacuum drier is improved and produced by our company on the basis of the technology of the domestic harrow vacuum drier. According to the various materials, such as, plasm, grease, granule, powder, fibre, the transmitted part is used the column gear box which works steadily and wears well, the active shaft is used the solid shaft of the over-striking stainless steel, and the harrow teeth are made of the high strength foundry stainless steel. By these measures, it can ensure that the harrow vacuum drier works steadily in various rigorous conditions. And there are two or four knocking sticks are set in the drier for benefiting the dryness and smash of the materials. The heating media may be used the steam, conducted heat oil and hot water.

  Application range

 ZGP series harrow vacuum driers are especially suitable to dry the materials which are sensitive to heat, easy to oxygenate in the high temperature and to harden in the dryness process, and when the discharge steam is required to be reclaimed in the dryness process. After the dryness finished, the materials become into the powder. So it is not necessary to smash them again and the dried materials can be packed directly. If the finished product is required being powder, to use the ZGP harrow vacuum drier is more proper. The rate of the contained water in the inlet material can reach 90%. As the dried materials, such as, plasm, grease, granule, powder and fibre, the final rate of the contained water can reach 1% and even 0.5%. So the ZGP harrow vacuum drier is used extensively in the process which produces the solid methylate natrium.

 

  Features:

 . The applicability is strong and dryness speed is quick. Because the harrow vacuum drier is designed with double casings that the heating media circulates in it. It has high discharge pressure. So almost materials with different character or status are proper to be dried by the ZGP vacuum drier, especially when the materials are explosive and easy to oxidize.
 .The quality is high. During the dryness process, the harrow teeth move constantly in positive and negative direction. So the dried materials are stirred equally.
 .The consumed steam is very little.
 .The operation of the drier is simple and the volatilizable gases can be reclaimed to reduce the environment pollution.

 

Technology parameters

Model

Effective volume
(L)

Working volume
(L)
Heated area
(m2)
Rake gear speed
(rpm)
Transmission power
(kW)
The allowed max. ratio of the leaked pressure under empty load
(Pa.L/s)
ZGP-100
100
50
1
10
1.5
1000Pa.L/s
(the leakage value<0.036MPa/h)
ZGP-200
200
100
1.6
10
1.5
1000Pa.L/s
(the leakage value<0.018MPa/h)
ZGP-500
500
250
3.14
10
3
1000Pa.L/s
(the leakage value<0.0072MPa/h)
ZGP-1000
1000
500
5.02
10
7.5
1000Pa.L/s
(the leakage value<0.0036MPa/h)
ZGP-2000
2000
1000
8.01
7
11
1000Pa.L/s
(the leakage value<0.0018MPa/h)
ZGP-3000
3000
1500
10.02
7
15
1000Pa.L/s
(the leakage value<0.0012MPa/h)
ZGP-4000
4000
2000
11.87
7
15
1000Pa.L/s
(the leakage value<0.0009MPa/h)
ZGP-6000
6000
3000
15.57
7
22
1000Pa.L/s
(the leakage value<0.0006MPa/h)
ZGP-8000
8000
4000
19.2
7
30
1000Pa.L/s
(the leakage value<0.0004MPa/h)
ZGP-10000
10000
5000
22.6
7
37
1000Pa.L/s
(the leakage value<0.0003MPa/h)

 

The attentive items when place an order

  • . Please notify us the following items when you inquiry and place an order:
     1.The material of the inner casing.(It is normal used the SUS304.)
     2.The heated type.(Steam, hot water, hot oil)
     3.The highest pressure of the steam. (When the steam is used for drying the material.)
     4.The highest temperature in the double casing.
     5.The viscosity number of the material.
     6.Whether the explosive requirement is necessary for the motor.
     7.Whether the explosive requirement is necessary for the electrical controlled device which controls the harrow teeth turning in positive or negative direction at definite period.
  • . Because the practical condition in the various industries and dryness techniques is very different, such as, the heated temperature, the vaporized volume, the cooling volume, please offers the following technology parameters if you want us to choose the vacuum pump and condenser:
     1.The name of the pumped media. (for example: water or other solvent)
     2.The average temperature in the double casing of the drier.(for example:110oC)
     3.The work pressure. (for example:-0.08MPa)
     4.The maximum volume of the vaporized liquid (for example: 30kg/h)
     5.The practical cooling condition.(The temperature and the flowrate of the cooling water.)
  • . If the above parameters can't be given and the similar successful experiences are not obtained, we recommend that you'd best come to our company for dryness trial.
    • Notes: 1. The type of the drier for trial is ZGP-100 and it can dry 50L of the finished product every time. We recommend that the proper volume of the dryness material brought with the customer is 30~50L every time.
        2.
    The trial device includes the oil-heating system and vacuum pump.
        3.It will cost you a reasonable charge for the dryness trial.
        4.If you want to come to our company for trial, please notify us 2 days before so as to prepare the trial device for you    

Working Principle

 The harrow vacuum drier is a kind of dryness equipments which uses the decrease of the boiling point of the water containing in the material in the vacuum. This drier uses the indirect heating style with the double casings to heat the water and pump the vapor out in time. In the inner casing, the harrow teeth are driven by the transmission shaft, and a definite angle is designed between the harrow teeth and the shaft line. The active shaft turns in positive and negative direction to make the materials move towards the axial direction till pushed out. By this method, the material can be dried and discharged out efficiently

   

    


 Structure characteristics:

  • .The solid stainless steel shaft is different with the hollow stick which is used in other factories. Because the status of the dried materials is very complicated and the material will become sticky in the dryness process, the best performance of the solid stainless steel shaft is just able to guarantee the steady dryness process.
  • .The drier body uses the sticker steel board and the normal pressure of the double casing is 0.5MPa. It also can be designed and manufactured according to the different requirements of the customers.
  • . Cast stainless steel harrow teeth. Most manufactures use the hollow pipe welding harrow teeth which are easy to curve during the dryness process especially to add the knocking sticks in the drier, so the hollow pipe welding harrow teeth have higher failure rate and are easy to be curved and broken. But we design the knocking sticks made of the stainless steel pipes with hollow wall which are approximately as long as the casing length. In the drier casing, the knocking sticks move freely. Normally, there are two or four knocking sticks in the casing to knock the materials constantly till the materials are smashed. So the dryness process is shortened and the finished products are better. The high strength and stability of the cast stainless steel harrow teeth leads to the steadily working environment when add the knocking sticks. The advantages have been proved in the practice.
  • .The humanism design of the inlet and outlet parts. The inlet part uses the quick unloading flange so that the loading is convenient and quick. The outlet part uses closed discharge structure of the worm wheel which leads to convenient discharge and simple operation and easy pack without residual materials.
  • .The advanced shaft seal makes the lest leakage. This type of seals is proved better in the process of the solid methylate natrium which requires the seal highly.

 
 

     工作原理图


  Sketch map of the structure of the worm wheel of the outlet parts (Note: this structure is only used in the ZGP-1000 and other types whose volume is larger than ZGP-1000. As the driers with small volume, their structure is quick downloaded structure.)

    

    

    1.Casing of the outlet parts    2.Shaft of the worm    3.Fore bearing housing of the worm   
    4.Handwheel                 5.Worm wheel          6.Seal washer
    7.Top seal washer              8.Bottom seal washer     9.Rocker   
    10.Shaft of the worm wheel   11.Worm wheel        12.Inspection window cover
    13.Back bearing housing of the worm

    

   

 Model
 A
 B
 C
 D
 E
 F
 G
 H
 K
 L1
 L
 n
 d
 ZGP-100
 155
 945
 413
 -
 -
 370
 450
 1500
 400
 800
 1692
 6
 18
 ZGP-200
 150
 900
 627
 -
 -
 400
 500
 1634
 500
 1020
 1877
 6
 18
 ZGP-500
 100
 -
 1150
 940
 -
 590
 640
 1880
 650
 1540
 2850
 6
 18
 ZGP-1000
 160
 -
 1440
 1160
 -
 710
 760
 1900
 800
 2000
 35000
 6
 22
 ZGP-2000
 150
 345
 1680
 1510
 -
 940
 1000
 2400
 1000
 2550
 4400
 8
 22
 ZGP-3000
 150
 370
 1700
 1697
 763
 1040
 1100
 2500
 1200
 2660
 5300
 10
 22
 ZGP-4000
 200
 450
 1820
 1725
 735
 1120
 1200
 2700
 1350
 2800
 5470
 10
 22
 ZGP-6000
 200
 450
 1895
 1000
 955
 1320
 1400
 3150
 1550
 3200
 5400
 10
 22
 ZGP-8000
 160
 530
 2720
 915
 915
 1500
 1580
 3650
 1700
 3600
 5400
 10
 22
 ZGP-10000
 160
 530
 4120
 915
 915
 1600
 1680
 3750
 1800
 4000
 5800
 10
 22

Note: the above installation sizes are for reference only; the actual sizes are based on sizes and actual things before orders.