Dynamic concrete experimental device

The chemical concrete agent is put into the concrete and precipitated test by being put into a chemical concrete in some water samples (giving water and dr--nage). Due to the different water quality of the water -like water, the concrete effect is also different. The requirements of this experiment have achieved the following goals:

1. Learn to obt--n the process conditions of the concrete, that is, the basic method of ** pH value, ** concrete and ** investment adding dosage.

2. Deepen the understanding of the precipitation of concrete and oblique tube through experiments.

2. Experimental principle:

The colloidal particles in the water are m--nly negative clay particles. The static exclusion force, the brown movement of the glue, and the hydration of the surface of the glue make the rubber particles have decentralized stability, and the three of them are affected by electrostatic exclusion. Therefore, colloidal particles cannot be removed by natural precipitation. Adding concrete to the water can provide a large amount of positive ions, the diffusion layer of the compressed rubber ball, reduce the potential of the pyrine, and reduce the exclusion of static electricity. At this time, the changes in the stability of the Brown Sports into unstable factor are also conducive to the adsorption condensation of glue.

In the water of the concrete, the colloidal particles gathered together after being stabilized, and gradually became larger. At this time, the size of the water flow speed shaved plays a m--n role.

3. M--n technical indicators and parameters:

1. Environmental temperature: 5 ℃ ～ 40 ℃

2. Treatment of water: 10 ～ 30L/h

3. Water inlet turbidity: 50 ～ 300mg/L

4. Water turbidity: 10 ～ 40mg/L

Note: The water temperature is high -effect, and the water temperature is low.

5. Device shape size: 1200mm × 400mm × 1600mm,

6. Work power: AC220V ± 10%, 50Hz, single -phase three -line system, 300W power, safety protection: ground protection, leakage protection, overcurrent protection

The industrial hydraulic comprehensive experimental desk is a experimental designed based on the characteristics of modern teaching and the required for the teaching outline of the hydraulic transmission course. It adopts advanced Loser's hydraulic elements and unique modularization, forming a convenient system combination of insertion to meet the experimental teaching requirements of students from colleges, secondary majors, and vocational technical schools. Handling, design and comprehensive application ability improved and strengthened the purpose of students' innovative design ability.

1. M--n features:

1. The system uses standard industrial hydraulic components, which is safe and reliable and close to industrialization.

2. Fast and reliable connection methods, special sealing interfaces, ensure that the experimental assembly is convenient and fast, disassembled without oil leakage, and clean.

3. Accurate measuring instrument, convenient measurement method, simple use, accurate and reliable measurement.

4. Use compilation controller (PLC) to communicate with microcomputer to achieve electrical automation control, online programming monitoring and fault detection.

① Basic circuit experiment of hydraulic transmission:

1. Pressure circuit of overflow valve

2. The decompression circuit of the pressure decompression valve

3. The load load load on the directional valve

4. The load -loading circuit of the pilot overflow valve

5. Slotting valve inlet oil inlet Small speed adjustment circuit

6. Slotting valve return oil -reinforcement speed adjustment circuit

7.

8.

9. Slotting valve transformer swing speed adjustment circuit

10. Speed valve transformer swinging speed adjustment circuit