Newly installed or not use the self-priming pump suction sheung shui

self-priming pump suction is not what to do with water, the newly installed self-priming pump suction water not to do, use the self-priming pump suction don't water to do

when you use a variety of self-priming pump products will not water absorption because of various reasons, here we share common self-priming pump for you suck water causes and not tell you are not water self-priming pump suction action:

a self-priming pump suction, the newly installed don't water to do

1, if it is a new installation of self-priming pump suction is not water, first check the working condition of self-priming pump use self-priming height and length of pipe is beyond the effective of self-priming pump, the suction conventional self-priming pump self-priming height can't more than 5 meters, pipe length can't more than 10 meters, if more than these Numbers please change the pipe length and self-priming height, or change the suction better self-priming pump products, such as vacuum auxiliary vacuum auxiliary self-priming pump products, this kind of product self-priming height can reach 9 m, self-priming distance according to the pipe size can form a complete set of corresponding vacuum auxiliary system can reach 500 meters far distance, need to understand the relevant product information is available pump industry vacuum auxiliary self-priming pump.

2, newly installed self-priming pump suction is not common self-priming pump inlet piping is sealed up tight enough, cause the self-priming pump has been in the process of self-priming pump suction way outside of the air, thus self-priming pump cavity and import cannot form a negative pressure pipe and result in water self-priming pump suction and solution to relevant operators carefully check import pipeline connection or welding points, checking method has the following several kinds:

( 1) If it is a common self-priming pump please self-priming pump first filled with water then start self-priming pump, self-priming water pump run 4 - After 5 minutes, ears close to the pipeline joints or listen carefully if there is a welding point before the inspiratory sound, if the environment is noisy, also can use latex paint to the area of the suspected leak, when latex have some point drawn into a small hole then find ideas and repair.

( 2) If it is a new installation of auxiliary vacuum self-priming pump suction is not water, please make sure the turning of the vacuum pump is correct, if vacuum pump to correct and in accordance with the above method to check whether self-priming pump inlet piping leakage, if self-priming pump inlet piping is not leak self-priming pump inlet piping, please tear down, and then with a hard piece of cardboard on inlet on and then start the vacuum pump, so you can check out whether check whether leakage self-priming pump export to note here is that if can achieve - vacuum degree 0. 1 mpa, negative pressure drop slowly after downtime vacuum auxiliary system there is no problem, export check valve slightly flat belongs to the normal phenomenon, if vacuum amounted to less than the negative pressure drop quickly after downtime data illustrate self-priming pump export internal check valve plate has a problem, it is possible that the check valve plate is not reset can also be caused by the check valve plate is not flat, it needs the export bend down check to know is what reason, in addition to export the bolt looseness on the elbow may be lead to air leakage caused by, this requires the self-priming pump outlet pipe on the valve valve shut tight, if not also need to export import and export pipeline pipe down, also use cardboard to the export pipeline, and then start the vacuum pump so that you can check out the vacuum auxiliary system itself each connecting parts if there is a leak point, common leak point should be because export clinch bolt or vacuum exhaust tube road bolt looseness due to transport or the installation process and cause of leakage.

2, use the self-priming pump suction don't water to do

1, if it is not use the self-priming pump suction sheung shui is very normal, before the first observation of self-priming pump mechanical seal and the fuselage other position is there is leaking water phenomenon, if mechanical seal damage need to change the new mechanical seal, pump body, or also need to repair or replace o-rings damaged.

2, open the clean-up cover plate is observed impeller were choked up with sundry, no clean-up cover plate of self-priming water pump, please separate the self-priming pump pump shell and motor block, check to see if the impeller and the pump cavity and observe the pump cavity wall is damaged, use longer self-priming pump is likely to be the pump cavity wall cavitation or corrosion phenomena and appear rupture phenomenon, make its self-priming cavity with gas-liquid separation chamber directly, it will also be causes of self-priming pump suction is not water.

3, check the self-priming pump inlet piping and the need of bottom valve check bottom valve is encountered a lot of sundry jam phenomenon.

4, self-priming pump to infuse water can suck up water, every time this kind of circumstance basically is to use some of the self-priming ability smaller self-priming pump products, they are more strict with installation, such as export pipeline must be vertical upward curve, only after 1 meter and outlet piping must also install the check valve, if the suction of self-priming pump is less strict product installation such as: vacuum self-priming pump

conventional self-priming sewage pump self-priming height 4 - in all Often appears in 5 meters, the use of slow water imbibition particularly difficult situation if you want to change these troubles suggest choose my company's new products need to realize that you can refer to: self-priming sewage pump

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