Zhonghu Self suction Pump
A self priming pump has a certain degree of self priming ability, which can easily start and maintain normal operation of the water pump when it cannot draw water
Run. The self priming pumps currently produced in our country are basically self priming centrifugal pumps. Self suction pumps can be divided into different types due to their different ways of achieving self suction
For various structures such as externally mixed self-priming pumps, internally mixed self-priming pumps, and vacuum water intake pump self-priming pumps powered by the pump itself
Form. The basic structure of the TC type (external mixing) self priming pump is shown in Figure 2-19. Its main components include: pump body, pump cover
Impellers, shafts, bearings, etc. The pump body has a vortex shaped flow channel, and the outer layer of the channel is surrounded by a large volume of gas and water leaving the chamber
Part casting has a seat angle for fixing the pump.
Like all self priming pumps, the suction port of the TC type (externally mixed) self priming pump is located above the impeller. After each shutdown, the pump
Some water can be stored inside for the next startup. Before the initial start-up, it is necessary to manually add sufficient self priming water to the pump to make the impeller
Most of it is submerged in water. After the pump is started, the water in the impeller is subjected to centrifugal force and flows towards the outer edge of the impeller, which is located at the outer edge of the impeller
It is mixed with gas to form a ring of foam ribbon gas water mixture. The foam belt can mix gas and water under the scraping action of the tongue separator
The substance enters the gas-water separation chamber through a diffusion tube. At this point, due to the sudden increase in the water flow area and the rapid decrease in flow rate, the relative pressure of the gas
Low density, escaping from the water and being discharged by the pump outlet, the relative density of water is high, falling to the bottom of the gas-water separation chamber and passing through the shaft
Return to the outer edge of the impeller towards the reflux hole and mix with the gas again. As the above process continues to circulate, the vacuum degree inside the suction pipe increases
As it increases, the transported water continuously rises along the suction pipe. When the pump is completely filled with water, the pump will enter normal working mode
State, complete the self suction process.
The inlet and outlet of the pump body can be connected with rubber hoses or flange pipes. When assembling the rubber hose, the inlet rubber hose joint seat is equipped with a check valve to prevent the backflow of the shutdown liquid. Internal installation of pump body vortex flow channel
There is a closed single suction impeller and a sealing chamber on the pump cover,
Install butter inside the bearing body to lubricate the bearing and the rear end of the pump shaft
Install √ pulleys or couplings, using an electric motor or internal combustion engine
To drive the pump.
Performance range of TC type self-priming pump: flow rate (Q)
6-120m ²/ H; The head is (H) 4.8~
87m; The rotational speed (n) is 2600-2900 r/min. can
Used to transport clean water and its physical and chemical properties are related to clean water
Similar liquids, the maximum temperature of the liquid does not exceed
Over 80 ℃.
The TC type self priming pump has a simple structure, small volume
Lightweight and has good self-priming performance: when in use
No need to install bottom valve, convenient maintenance operation, as long as in the
Start the pump for the first time and fill it with water to start pumping
Water, no more water can be added when starting in the future. However, compared with centrifugal pumps, self priming pumps with the same performance parameters generally have slightly poorer pump efficiency and cavitation performance. This type of water pump is very suitable for small rice plants
Irrigation of fields, vegetable fields, and gardens, water supply for fish ponds, factories, schools, and villas, engineering construction, drainage of basements and sewers
Wait for it to be used. S