How to solve the problem that the suction lift of the self priming pump is not large enough

1. The suction pipe end of the self-priming pump is equipped with a suction bottom valve. The suction foot valve is actually a check valve, which ensures that the water flow can only enter the suction pipe from the pool and cannot be returned. Therefore, if the suction pipe is full of overflow, although the height of the pump shaft is higher than the working water level of the pool, the water in the suction pipe will not flow into the pool due to the function of the suction bottom valve, so that the water pipe is always full of water to ensure that the pump can move and be flexible.

The reliability of this method of suction is affected by the quality of the suction foot valve. For example, the seal is not tight, and there is water leakage. The water in the suction tube will gradually flow into the pool.

As a result, there is no water in the suction pipe, and when the pump is started, there is no water, resulting in the need for artificial irrigation.

2. Reduce the curve, drop height and horizontal spacing of the inlet pipeline.

3. The self-priming pump is set up with a suction tank before the pump. This method needs to be provided with a suction tank on the suction pipe of the water pump, before the operation of the water pump, the tank should be filled with water artificially, after the operation is suspended, because the height of the water inlet pipe of the suction tank is higher than the water surface height in the pipe, although the water surface height in the pool is lower than the height of the water surface in the tank, the water in the tank will not flow backwards, enter the pool, therefore, the water can store certain water in the suction tank, and because the outlet pipe of the suction tank (i.e. the suction pipe of the water pump) is lower than the water surface height in the pipe, so it can ensure that the suction pipe of the water pump is filled with water, In the future, when the pump is running again, the water in the tank is pumped away by the pump, and the tank presents negative pressure, and the water in the pool is replenished to the suction tank under the action of atmospheric pressure

The theoretical value of the suction head is 10 meters, and in practice, due to accuracy, efficiency and other reasons, this number cannot be reached, so the pump can only be placed below this number.

The suction lift is determined by atmospheric pressure, which is fixed, and the atmospheric pressure is related to the altitude at which it is located.

Theoretically, there is no way to increase the suction stroke. Multi-stage pumping can solve specific problems, but it does not change the suction head.

A water pump is a machine that transports or pressurizes a liquid. It transmits the mechanical energy or other external energy of the prime mover to the liquid, so that the liquid energy increases, and is mainly used to transport liquids including water, oil, acid and alkali, emulsion, suspension emulsion and liquid metal, etc., and can also transport liquids, gas mixtures and liquids containing suspended solids. The technical parameters of pump performance include flow, suction lift, head, shaft power, water power, efficiency, etc.; According to different working principles, it can be divided into volumetric water pumps, vane pumps and other types.

Positive displacement pumps use changes in the volume of their studios to transfer energy; Vane pumps use the interaction between rotary vanes and water to transfer energy, and there are types of centrifugal pumps, axial flow pumps and mixed-flow pumps.

Suction lift is also called "maximum self-priming height" (which can also be understood as "degree of self-priming"). The vertical distance between the pump inlet and the surface to be pumped is determined by subtracting the cavitation allowance of the pump from the local atmospheric pressure, subtracting the loss along the suction pipe and the vaporization pressure of the water temperature! Any pump has a suction lift, and there is a difference in size!

Summary. Hello dear, happy to answer for you; The method of insufficient pressure of the self-priming pump is: 1. Adjust the automatic pressure, open the spring to see the spring sheet, and slowly twist it with a screwdriver if it can be twisted with a screw until it is satisfied, but before twisting, make a note of how many times you twist it.

2. Household automatic pressure pump pressure regulation method: two pressure switches can be used to set two pressure values, one large and one small, the large control pump stops, and the small control pump starts, so that the water pressure has a fluctuation range to avoid frequent starting.

Hello dear, happy to answer for you; The method of insufficient pressure of the self-priming pump is as follows: 1. Adjust the automatic pressure, beat the hand to open the spring and see the spring piece, and slowly twist the screw with a screwdriver until the adjustment is satisfied, but before twisting, make a note of how many times you twist. 2. Pressure regulation method of automatic pressurized pump for household use:

You can use two pressure switches to set two pressure values, one large and one small, the large control pump stops, and the small control pump starts, so that the water pressure has a fluctuation range to avoid frequent starting.

The self-priming pump is a general mechanical product, which is composed of a motor, a pump shaft, a pump casing, an impeller, a water inlet and a water outlet. The new type of early bend is a real land: it is composed of a pulley, a pump shaft, a water blade, an inner flow plate, a jet pipe, a pump body, a water inlet and a water outlet.

Insufficient suction power of the self-priming pump can be caused by:

1.Blockage inside the pump: There may be debris or dirt inside the self-priming pump, causing the pump to be unable to absorb water normally and reduce the suction power. Suspicious tour.

2.Damage to the internal seals of the pump: The internal seals of the self-priming pump, such as impellers and shaft seals, are damaged, which will lead to a decrease in the pump's water absorption capacity.

3.Air leakage in the suction pipe: There may be air leakage in the suction pipe of the self-priming pump, which causes the pump to be unable to form a vacuum and reduce the suction power.

4.Blockage of the suction pipeline: The suction pipe of the self-priming pump may be blocked, resulting in the pump being unable to absorb water normally and reducing the suction pin.

Workaround:1Clean the inside of the pump: clean up the debris or dirt inside the self-priming pump to keep the pump unblocked.

2.Replace the seals: Replace the seals inside the self-priming pump to ensure the water absorption capacity of the pump.

3.Check the suction pipeline: check whether the suction pipe of the self-priming pump is leaking or blocked, and repair it in time.

4.Adjust the position of the pump: Adjust the position of the self-priming pump to a lower position to increase the suction power of the pump.

The reason why the suction power of the self-priming pump is not large may also be the reason for the poor sealing of the mechanical seal of the self-priming pump, and it may also be the reason that the water cannot be pumped up due to the poor sealing of the imported pipeline, so the suction power of the self-priming pump is not large.

Common faults in pump head sealing: The water suction port, water outlet and copper impeller cover of the pump casing are all sealed by the sealing gasket, which is very prone to the failure of the seal Qi Lameng is not strict; The large gap between the O-shaped static seal of the pump head and the axial dynamic seal of the motor or the water retaining and grinding level of the pump head are common faults. During the inspection, it should be carefully investigated, item by item, and replaced or repaired according to the specific situation.

Summary. Rice.

The maximum suction lift of the self-priming pump is meters. 1 standard atmosphere is Pascal, which is the pressure at the height of the meter water column. No matter how good the self-priming pump is, at 1 standard atmosphere, the tube in the upper part of the meter is vacuum.

How many meters is the maximum suction stroke of the self-priming pump.

The maximum suction lift of the self-priming pump is meters. 1 standard atmosphere is Pascal, which is the pressure at the height of the meter water column. No matter how good the self-priming pump is, at 1 standard atmosphere, the tube in the upper part of the meter is vacuum.

Hope you can.

[Calculate how much it will cost you to renovate your home].

The self-priming pump is also a water pump, or it can be called a pumping device, which can be used on many occasions in life, generally used in a liquid environment, for example, in some rural areas with wells, when using water, the self-priming pump can be directly installed in the low water level of the well, and the well water can be pumped up and used after opening, so how many meters can the suction distance of the self-priming pump reach? Let's take a look with Qeeka Home experts.

1. How many meters can the suction stroke of the self-priming pump reach?

Generally, it can reach a suction lift of 8-30 meters. The self-priming pump for household use will choose a longer suction stroke, which can reach about 30 meters, and its flow rate is small, and the suction stroke is naturally higher, which is suitable for deep well pumping; The self-priming pump for industrial use will choose a large flow rate, and its height is generally 8-9 meters, because it is used in industrial occasions, and there will generally not be much requirement in terms of height.

2. What should be paid attention to when installing a high-suction lift self-priming pump?

1. Pay attention to the installation occasion.

In order to avoid displacement, we must choose to install it on the horizontal ground, and the ground should be firmer to maintain smooth operation. At the same time, it is necessary to avoid installation outdoors, if the environmental restrictions need to be installed outdoors, it is necessary to configure a protective cover, because some of the materials on the self-priming pump are PVC, which is easy to embrittle and affect the use under direct sunlight.

2. Pay attention to the head and conveyed material.

The self-priming pump needs to be matched with the appropriate pipe according to the liquid to be transported, and if it is to transport chemical liquid, it is not suitable to choose PP pipe. At the same time, pay attention to whether there are impurities and debris inside the piping, and if so, clean it with clean water first.

3. Pay attention to the power cord.

Before connecting the power cord to the self-priming pump, you need to confirm whether the power supply is consistent with the matching motor, and you also need to install a current protection switch.

Summary: The above is an introduction to the suction range of the self-priming pump, I hope the content shared can give you some reference, if you want to know more about relevant knowledge, you can **** Qeeka Home information.

Enter the area and get the decoration for free**].

Causes of insufficient suction power of self-priming pumps:

1) Water seal air leakage.

2) The impeller is not in place.

3) The screws at the place with the rubber pad are not tightened.

4) The pump is strong and has "sand hole" air leakage.

5) The screw is severely worn.

6) Air leakage from the jet tube rubber pad.

7) The injection hole is blocked by debris.

Note: The above are the most common parts when repairing.