Diesel self-priming sewage pump set self-priming and non-clogged sewage in one, the use of axial return external mixing, and through the pump body, impeller flow channel design, can be like the general self-priming clean pump does not need to install the bottom valve and irrigation water, but also can suck and drain containing large particles solid and long fiber impurities liquid, It can be widely used in municipal sewage engineering, river pond culture, light industry, paper making, textile, food, chemical industry, electricity industry, fiber, slurry and mixed suspension and other chemical medium ideal impurity pump. Compared with similar products of the same kind, it has the characteristics of simple structure, good self-priming performance, strong sewage capacity, energy saving, convenient use and maintenance, etc., and it is in the forefront of the same kind of sewage pump products. The technical performance index is good, and it has broad application market and development prospect. Because the medium conveyed by the sewage pump is a mixed liquid containing solid materials, the requirements in sealing, motor bearing capacity, bearing arrangement and selection are higher than those of the general sewage pump. The key problems in selection and use are reliability, simple structure, strong sewage capacity and convenient use and maintenance, which are widely used in urban sewage pipe network system.
Methods of diesel self-priming sewage pump to improve self-priming capacity:
Install an suction bottom valve at the end of the suction pipe. Suction bottom valve is actually a check valve, it ensures that the water can only flow from the pool into the suction pipe and can not flow back, so if the suction pipe is filled with water, although the pump axis elevation is higher than the working water level of the pool, but because of the role of the suction bottom valve, the water in the suction pipe will not flow into the pool, so that the suction pipe has been filled with water to ensure that the pump can automatically and quickly start. The reliability of this water absorption method is affected by the quality of the water absorption bottom valve, for example, the closure is not strict, leakage, the water in the water absorption pipe will slowly flow into the pool, for a long time, there is no water in the water absorption pipe, resulting in the need for manual irrigation when the pump starts.
2. Reduce inlet pipe bends, drop height and horizontal distance.
3. Set the suction tank before the pump. This method needs to set up a suction tank on the pump suction pipe, before the pump runs, the tank should be artificially filled with water, after the operation stops, because the water inlet pipe height of the suction tank is higher than the water surface height of the pipe, although the water surface height of the pool is lower than the water surface height of the tank, the water in the tank will not flow back into the pool, so the suction tank can store a certain amount of water. And because the suction pipe of the suction tank (that is, the suction pipe of the pump) is lower than the height of the water surface in the pipe, it can ensure that the suction pipe of the pump is filled with water, and when the pump runs again, the water in the water tank is pumped away by the pump, and negative pressure appears in the tank, and the water in the pool is added to the suction tank under the action of atmospheric pressure.
4. Install a vacuum pump on the suction pipe of the water pump. Before the water pump starts, the vacuum pump starts first so that the suction pipe of the water pump is filled with water to ensure that the water pump starts automatically and quickly. This method of water absorption requires a perfect automatic control system to ensure normal work. Up.
The above are four ways to improve self-priming capacity, hoping to help you better use diesel self-priming sewage pumps.
