Puxin concrete mould system

Submitted by Nick Chase on
Last changed on 02 Aug, 2016 - 08:43

The Puxin system was devloped by China to succeed the GCC. The system uses steal moulds to create a ring system in which concrete could be pured.  

Instructions

Dry build of a Puxin digester

 

Partlist

 

  • Puxin moulds

  • Puxin gas holder

  • Cements: 36 bags (50kgs bag)( total 1800 Kgs) OR 50 bags (80 lbs bag)( total 4000 lbs) .

  • Sand: Same amount as Cement .

  • Gravel: 1st- About 300 lbs of 1” Gravel for foundation.

  • 2nd-Small size Gravel: in same amount of Cement.
  • Iron rod for rebar:  Using 7 sheets of rebar (7’×17’) OR 5-7 rods (1/4” diameter , 39 feet length ).
  • Wires: About  2kg 
  • Sealant (inlet & outlet walls paint ): 20 liters of waterproof acrylic paint , and about 15 liters of tar paint .
  • Bricks: Between 600 bricks .
  • Labors: 2 trained and 5 untrained workers 
  • Backhoe:  The hole must be at least 15’ × 15’
  • Wood mold for concrete slab 11’×11’
  • PVC pipe 20’ × 5” & 20’ × 2”

Tools and Machines

  • Cement mixer
  • Cement vibrator
  • Electric generator
  • Hand tools

 

Heating

Heating system 1st- using the compost to heat the biodigester we need 300 yard of ½” PEX tube ( 200 yard of  for compost coil and 100 yard inside the digester coil or used other heat exchanger inside the digester ) and small water pump.2nd- using solar water heater we need solar water heater about 500 liter capacity , and 100 yard inside the digester coil or used other heat exchanger inside the digester ) and small water pump. 3rd- using propane water heater or biogas water heater we need water heater run by gases ( depend on what we can provide ) , and  100 yard inside the digester coil or used other heat exchanger inside the digester ) and small water pump. 

Steps to build

follow the video

Download:  Puxin build / fact manual Puxin family size digester fact sheet