Send Message

Primary Sludge Twin Shaft Grinder For WWTP Antiwear Practical

Basic Information
Place of Origin: Guangdong , China
Brand Name: accuvon
Certification: API , IOS , CE, 3A , FDA
Model Number: HAP 120
Minimum Order Quantity: 1 set
Price: Negotiable
Packaging Details: Export wooden box packaging
Delivery Time: 8 - 12 work days
Payment Terms: L/C, D/P, T/T, Western Union, MoneyGram
Supply Ability: 1000 Pieces per Month
Detail Information
Type: Dual-shaft Grinder HAP 120 Connection: Flange DN100
Grinder: Hart Metal Flow Range: 40 M³/h
Speed: 120rpm Pump Casing Material: GG25 Grey Cast Iron
Seal Type: Mechanical Seal Solids Content: 3 -5 TS
High Light:

Sludge Twin Shaft Grinder


WWTP Twin Shaft Grinder


Antiwear Twin Shaft Grinder For WWTP

Product Description



Primary Sludge Excellent cutting result , twin-shaft grinder for WWTP



A major sewage treatment plant experienced several instances of pump faults upon their change in processes, which causes an increase in dry matter content of the primary sludge that resulted in agglomerated solids clogging up the pumps.


Following the successful implementation of Accuvon HAP120 twin Shaft Grinder through various tests; for the reduction of the primary sludge;the Accuvon HAP120 twin Shaft Grinder was installed on the suction side of two primary sludge pumps that handle the sludge alternately.


The excellent grinding result, interchangeable blades with different profiles that allows different degrees of communition, space-saving design etc… had convinced the sewage plant operators to replace all existing shredders by our Accuvon twin Shaft Grinders.



operating principle


The dual-shaft grinder was designed using the principle of the Accuvon Rotary Lobe Pump. Instead of the rotating lobes, this device has interconnecting cutting blades set on the hexagonal carrier shaft and attached with a central bolt.

The different circumferential speeds and blade configurations ensure excellent cutting results.





1 Quick-release cover

2 Axial casing protection

3 Central clamping unit

4 Spacer rings

5 Cutting blades

6 Shaft seal

7 Block casing

8 Quench and control chamber

9 Carrier gear unit and gear reducer

Primary Sludge Twin Shaft Grinder For WWTP Antiwear Practical 0




blade configurations


The degree to which the Accuvon Crusher cuts is determined by the choice of blade configuration, the teeth profiles, the blade widths and the flow speed.

Currently, a choice of nine different blade configurations can be selected depending on the assignment. The different circumferential speeds of the shafts create a tearing/cutting result. The use of hardened steel ensures the blades are kept sharp for longer. Defective cutting blades can be individually replaced.



Control technology


The Crusher generally runs in reverse for 5 seconds upon starting – afterwards changing to the original direction of rotation

Reversing in the event of overload (blockages or clogging): Reversing upon reaching 70% of the motor power rating (value can be freely configured via the control unit)

Alert: when reversing five times within ten minutes due to overload Counter which runs in the background to record the number of load-dependent reversals

The Accuvon control technology guarantees trouble-free operation of the Crusher.

design options

combined with a rotary lobe pump; can also be combined with other pumps





  • Reliable, powerful, robust
  • Crushing of Large Solids
  • Compact, low-on-space design
  • Energy efficient, no internal friction
  • Cutting result can be very easily adjusted
  • Long service life
  • Different blades available – for variable cutting results
  • Cutting unit very easy to replace
  • Ease of maintenance
  • Pressure-resistant, up to 12 bar
  • Submersible model also available


Macerating Technology data:


Medium Primary Sludge
Flow Rate Up to 40 m³/h
Speed 120rpm
Temperature 20 °C
direction Reversible operation
Solids Content 3 – 5 % TS




Application data of Dual-shaft grinder:


Type Dual-shaft grinder
Grinder Crusher
Casing Grey cast iron
Casing protection plates Hart metal
O-Rings NBR
Shaft sealing SiSiC / SiSiC
Knife geometries long shaft F16Z, short shaft G10Z
Drive  3 kW


Model data sheet:


Model Flow(max) velocity of flow


DN mm


DN mm





HAP80 25m³/h 3m/s DN80 DN100 3Kw 4Kw
HAP100 40m³/h 3m/s DN100 DN125 3Kw 4Kw
HAP120 60m³/h 3m/s DN100 DN125 3Kw 4Kw/5.5Kw
HAP140 80m³/h 3m/s DN125 DN150 3Kw 5.5Kw
HAF125 100m³/h 3.1m/s DN125 DN150 7.5Kw 11Kw
HAF150 150m³/h 3.1m/s DN150 DN200 11Kw  
HAF200 200m³/h 3.1m/s DN200 DN250 11Kw  
HAX250 300m³/h 2.4m/s DN250 DN300 18.5Kw  
HAX300 500m³/h 2.4m/s DN300 DN350 18.5Kw  


Contact Details
Demi Liu

Phone Number : +86 18676822768

WhatsApp : +8618676822768