Filter filtering and backwash experimental device

Filter is a process process with impurities in the material with pores to cut water to make the water clear. The commonly used filtering methods include sand filtering, diatomic soil coating film filtration, sintering tube micropore filter, metal silk fabric filtering, etc. Filtering not only can remove the impurities of small suspended particles in the water, but also the bacterial virus and organic matter will be removed with the decrease of turbidity. In accordance with the structure of the actual filter, this experiment is used for sepassed sand filter materials or ceramic filter materials, and uses tap water to clean the sand layer filtering and roll -out washing experiments.

Through experiment hopes, the following goals are achieved:

1. Understand the grade method of filter material;

2. Master the calculation method of the water head loss and the change of water head loss during cleaning the sand layer;

3. Master the calculation method of the head loss of the water head during the rinse washing filter layer

2. M--n technical indicators and parameters:

1. Environmental temperature: 5 ℃ ～ 40 ℃

2. Treatment of water: 0.0628 ～ 0.0785m3/h

3. Filtering speed: 8 ～ 10m/h

4. Counter -rushing water volume: 0.42m3/h (anti -rinse 10min)

5. Filter material: Rough sand 2 ～ 4mm H100 quartz sand 0.5 ～ 1.5mm H700

6. You can use 1 large filter cap

7. Filtering water: W = 0.7854 × 0.12 = 0.007854m2q = W × V = 0.007854m2 × 10m/H = 0.0785m3/H 8 m/h = 0.0628m3/h

8. Counter -rushing water volume: 0.007854m2 × 15L/S ・ m2 = 0.42 m3/h

1. Product overview

The experimental desk is used in the mechanical majors of colleges and universities to open a "mechanical system transmission solution innovation combination design analysis experiment" to cultivate new modern experimental equipment with the basic value orientation of students' comprehensive design capabilities, innovation capabilities and engineering practices. The experimental desk uses a new innovative design concept to divide the mechanical transmission device into several modules. It can conduct diverse selection, assembly and testing according to the requirements of the experimental teaching. It is a powerful comprehensive experimental equipment.

2. Machinery Innovation Group Experimental Platform Experimental Project:

1. Design of mechanical system transmission scheme 2. Mechanical system assembly tr--ning 3. Movement analysis of mechanical system 4. Analysis of innovative combination of mechanical system

3. Experimental content

1. Design of mechanical system transmission solution: (1) Selection of transmission type (2) Arrangement of transmission order (3) Allocating transmission ratio (4) calculation of characteristic parameters

2. Mechanical system assembly tr--ning:

(1) Typical single -stage mechanical transmission transmission scheme assembly experiment: V band -driven roller ch--n transmission round gear transmission cone gear transmission, sn--l worm (upper) drive worm worm (lower) transmission, slot wheel mechanism transmission single ten thousand universal directions Clear transmission

(2) Typical multi -level mechanical transmission transmission scheme assembly experiment: transmission transmission (refer to the design of the CA6132 precision car lathes nine -speed transmission).