Characteristics of Screw Pump and Selection and Application Process in Sewage Treatment
The flow rate of the screw pump is linear with the rotation speed. Compared with the high-speed screw pump, the flow rate and the head can be increased, but the power is obviously increased. The high rotation speed accelerates the abrasion between the rotor and the stator, and the screw pump must be prematurely failed. Moreover, the high-speed rotary screw pump has a short stator rotor length and is easily worn, thereby shortening the service life of the screw pump. By reducing the speed through a speed-reducing mechanism or a stepless speed-regulating mechanism, the speed is kept within a reasonable range of three hundred revolutions or less, and the service life can be extended several times compared with a high-speed rotary screw pump.
The screw pump must not be allowed to operate in the event of a broken material. Once it occurs, the rubber stator will instantly generate high temperatures and burn out due to dry friction. Therefore, the crusher is in good condition and the grill is unblocked. This is one of the necessary conditions for the normal operation of the screw pump. For this reason, some screw pumps have also installed a shut-off stop device on the pump body, a vacuum will be generated inside the chamber, and the vacuum device will stop the screw pump operation.
The screw pump is a positive displacement rotary pump. When the outlet end is blocked, the pressure will gradually increase to exceed the predetermined pressure value. At this point, the motor load increases dramatically. The load of the related parts of the transmission machinery will also exceed the design value. In severe cases, the motor will be burned and the transmission parts will be broken. In order to avoid damage to the screw pump, a bypass relief valve is generally installed at the outlet of the screw pump to stabilize the outlet pressure and maintain the normal operation of the pump. There are many types of screw pumps on the market. Relatively speaking, the imported screw pumps are of reasonable design and excellent materials, but the prices are relatively high. Some of the services are less than λ, the accessories are expensive, and the long order period may affect the production. normal operation.
Screw pumps are widely used in the transportation of water, wet sludge and flocculant liquids in sewage treatment plants due to their characteristics of variable delivery, strong self-priming ability, reversibility, and the ability to transport liquids containing solid particles. . Screw pump selection should follow the principles of economy, reasonableness and reliability. If the design is poorly selected, it will cause troubles for future use, management and maintenance. Therefore, using a practical and reliable screw pump in accordance with the actual production needs can not only ensure the smooth production, but also reduce the repair cost.
Screw pumps are widely used in the transportation of water, wet sludge and flocculant liquids in sewage treatment plants due to their characteristics of variable delivery, strong self-priming ability, reversibility, and the ability to transport liquids containing solid particles. . Screw pump selection should follow the principles of economy, reasonableness and reliability. If the design is poorly selected, it will cause troubles for future use, management and maintenance. Therefore, using a practical and reliable screw pump in accordance with the actual production needs can not only ensure the smooth production, but also reduce the repair cost.
More vacuum pump information is available at China Vacuum Pump Trading Network (/).
HGY5318TFC Chip Spreader is used for spraying asphalt and aggregate on roads and bridges for maintenance purposes, with asphalt binder available for promoting the adhesion of bituminous concrete. In the spreader's hopper, the mixture is mixed well for the best cohesiveness. Developed basing on HGY5310TLS, this asphalt spraying machine has employed a mixing device to ensure the rubberized asphalt is not easy to get precipitated or segregated. HGY5318TFC bitumen sprayer is developed independently at Gaoyuan. Its operation system has been largely simplified.
Technical Parameters
Model: HGY5318TFC
Chassis model: HOMO ZZ3317N4667E1 from CNHTC
Emission standards: Euro V
Chassis motor power: 276kW/380hp
Auxiliary engine power: 73.6kW/100hp
Asphalt spray volume: 0.2-3.0kg/㎡
Aggregate spray volume: 2-22L/㎡
Asphalt heating speed: 20℃/h
Optimum construction speed: 3-6km/h
Chip size: 3-30mm
Tank volume: 8500L
Spray width: 4200mm
Hopper volume: 12m³
Material: modified bitumen, hot asphalt, rubberized asphalt, and emulsified asphalt
Total weight: 31000kg
Dimension: 11980×2500×3860mm (L×W×H)
Main Features
1. The asphalt sprayer adopts a special chassis which is in conformity with the Euro V standards, featuring strong carrying capability, low oil consumption, and easy operation
2. The patented hydraulic servo technology provides powerful driving force for the system
3. The bitumen spreading machine employs intelligent control system, radar speed tester, monitor, and both automatic and manual operation system. Only one driver is needed to accomplish the distribution job
4. Pipes for carrying bitumen are coated with heat transfer oil to ensure that all of the machine parts run smoothly and don't have to be cleaned
5. The 3 anti-collision foldable sprinkler heads are of high precision and uniformity
6. The imported pump for high-viscosity asphalt meets various working conditions
7. A unique aggregate feeding and distribution system ensures the materials are sprayed uniformly, consecutively and stably
8. Different spray nozzles are controlled independently and can work jointly with each other freely
9. HD camera is equipped at back of the equipment for effective monitor and control
10. The patented bitumen tank with large volume can be heated in a short time and works to maintain the temperature of the materials. Stability of the bitumen is largely improved by the mixing device
Belt Type Synchronous Chip Sealer
Belt Type Synchronous Chip Sealer,Asphalt Joint Sealing Machine,Suracing Synchronous Chip Sealer,Asphalt Synchronous Chip Sealer
Henan Gaoyuan Road Maintenance Equipment Co., Ltd. , https://www.sgroadmachinary.com