Concrete admixture is a chemical substance that is incorporated into the concrete mixing process and accounts for less than 5% of the cement mass and can significantly improve the performance of the concrete. The characteristics of concrete admixtures are that there are many varieties and small amounts, which have great influence on the performance of concrete, and have the characteristics of less investment, quick effect and remarkable technical and economic benefits.With the continuous advancement of science and technology, admixtures have been increasingly used, and admixtures have become the fifth important component of concrete in addition to the four basic components. Admixtures have a certain improvement effect on the carbonation resistance of concrete, There is a certain linear relationship between the carbonation depth and porosity of concrete; Admixtures have a great influence on the frost resistance of concrete, the concrete with air-inducing water reducing agent has better frost resistance, but the single early strength agent has no effect on the frost resistance of concrete.
Peristaltic pumps play a crucial role in the production of precisely metered transport admixtures.
The peristaltic pump conveying concrete admixture has the advantages of uniform feeding, accurate measurement, convenient adjustment of the addition ratio and improvement of the quality of the finished product; The peristaltic pump is squeezed by a hose to generate a flow rate. The solution only flows through the hose and does not touch the pump body, which can effectively prevent the solution from corroding the pump body and clogging the pump body. The peristaltic pump has the advantages of simple cleaning, corrosion resistance, high temperature resistance and high cost performance.
Polycarboxylate superplasticizer is a new generation of high performance water reducer and is a cement dispersant used in cement concrete. After being blended into the product, the concrete has a high slump retention performance, and the slump is not lost in half an hour, 1h slump loss is very small, it has the advantages of low external agent dosage, high water reduction rate, small shrinkage, etc. The incorporation of this product can greatly improve the fluidity of the concrete, so that the coagulation can maintain the construction performance for a long timetable; at the same time, it can improve the workability and physical and mechanical properties of concrete and improve the quality of engineering. It is widely used in prefabricated and cast-in-place concrete, reinforced concrete and prestressed concrete for high-speed railway, passenger dedicated line, industrial and civil buildings, roads, bridges, port terminals, airports and other projects.
Acrylic acid is one of the important raw materials for water-soluble polymers. It can be obtained by graft copolymerization with starch to produce super absorbent water absorbent. It is widely used in pharmaceutical, leather, textile, chemical fiber, building materials, water treatment, petroleum exploitation, coating and other industrial sectors.
The polypropylene solution is stably transported to the reaction vessel by a peristaltic pump. According to the different requirements of the capacity and the process, the transmission flow rate in the production is generally 2-10 liters/hour, and in the small test, it is generally 0.5-2 cc/min;
Each complete production or experiment time is generally 2-4 hours;
Peristaltic pumps and transmission hoses need to be resistant to acrylic acid corrosion;
The temperature and humidity of the production workshop are high, and the peristaltic pump is required to have high durability.
In the small test, the peristaltic pump is required to smoothly and accurately drop the material;
Solution for peristaltic pump to transport admixtures such as polycarboxylic acid acrylic acid
Option 1: Experimental use
1.Single pump head flow range: 0.007-2280 ml/min 0-136 L/H
2.Flow accuracy error: <0.5%;
3.Speed range: 0.1 ~ 600 (rev / min);
4.The speed resolution is 0.1-100 rpm, which is 0.1; at 100-600 rpm, it is 1
5.4-digit LED digital tube displays speed and working mode;
6.Knob speed control and function menu operation;
7.Has start / stop / forward / reverse / full speed / speed / power down memory and other functions;
8.Stainless steel casing is resistant to acid and alkali and corrosion resistant;
9.The circuit board is sprayed with three anti-painting processes to achieve dust and moisture proof effects;
10.RS485 communication, support MODBUS protocol, analog control and external control start and stop is convenient to connect with various control devices;
Option 2: Small trial use
Recommended model: BW100 / WP110
1. Flow range: 0.05-18.5 ml/min;
2. Flow accuracy error: <0.5%;
3. Speed range: 0.1 ~ 100 (rev / min);
4. Speed resolution: 0.1 (rev / min);
5. 4-digit LED digital tube displays speed and working mode;
6. The membrane button controls the direction, start and stop and speed;
7. With full speed / power down memory and other functions;
8. The circuit board is sprayed with three anti-painting processes to achieve dust and moisture proof effects;
9. RS485 communication, support MODBUS protocol, analog control and external control start and stop is convenient to connect with various control devices;
Option 3: pilot use
Recommended model: WT600/KZ25
1. Single pump head flow range: 30-6000 ml/min 0.18~360 L/H
2. Speed error: <3%;
3. Speed range: 30-600RPM;
4. Speed resolution: 1 (rev / min);
5. High torque output, brushless motor, maintenance free
6. 4-digit LED digital tube displays speed and working mode;
7. Knob speed control and function menu operation;
8. It has the functions of start-stop, forward and reverse, full speed, speed regulation, power-down memory, etc.
9. Speed resolution 1 rev / min
10. Stainless steel casing is resistant to acid and alkali and corrosion resistant;
11. The circuit board is sprayed with three anti-painting processes to achieve dust and moisture proof effects;
12. The external foot switch can be controlled to start or stop or start and stop the external control line to control the start and stop;
Option 4: Production use
Recommended model: BG600-S/YZ35-13
1 single pump head flow range: 1.3-12000 ML/MIN 0-720 L/H
2. Speed range: 0.1 ~ 600 (rev / min);
3. Speed resolution: 0.1 at 0.1-100 rpm; 1 at 100-600 rpm;
4. Made of stainless steel, corrosion resistant
5. The button controls the speed, forward and reverse, start and stop, full speed, easy to operate;
6. 4-digit LED digital tube displays speed and working mode;
7. Brushless motor drive, maintenance free
8. The circuit board is sprayed with three anti-painting processes to achieve dust and moisture resistance.
9. RS485 communication, support MODBUS protocol, analog control and external control start and stop convenient connection with various control devices