What to do if the pressure of the water pump is insufficient What is the problem of insufficient pre

1. What is the reason for the insufficient pressure of the water pump?

There are several reasons for the pressure to be too small: 1. If the inlet of the pump is full, when there is no pressure in the pump used for the first time, it is likely that the pump is reversed.

2. There is air in the water supply pipe and pump body. 3. The suction range is too large. 4. The resistance loss of the inlet and outlet pipes is too large.

5. The pump inlet is blocked or the water inlet is insufficient. 6. The motor speed of the centrifugal pump is too low.

2. What are the precautions for pump installation?

1. If there is a small fault in the water pump, please make sure that it does not work, if the sealing gasket of the water pump shaft is worn, it must be added in time, if it continues to be used, it will leak, the direct effect of this is to increase the energy consumption of the motor, thereby damaging the impeller.

2. If there is a strong vibration of the pump during operation, it must be the best problem, and we must stop working in time and check the cause to avoid causing greater damage to the pump.

3. The water pump needs to be maintained after use, for example, when the water pump is used up, the water pump needs to be emptied, it is best to disconnect the water pipe and rinse with clean water.

4. Remove the tape of the water pump, rinse it with water and dry it in a bright place, preferably not in a dark and damp place. The tape on the pump should not be stained with oil and sticky items on the tape.

5. Carefully check whether the impeller is cracked, whether the impeller fixed on the bearing is loose, if there is a crack or loosening, please repair it in time, if there is mud in the pump impeller, please clean it.

If the pump pressure is insufficient, there are several methods you can try:

1.Check that the pump is working properly and that there is no abnormal sound or vibration.

2.Check the pump inlet for blockages or dirt and clean the water inlet.

3.Check the pump outlet for blockages or dirt and clean the water outlet.

4.Check if the water pump's filter needs to be cleaned or replaced.

5.Check if the pressure switch of the water pump needs to be adjusted or replaced.

6.Inspect the pipes of the pump for leaks or damage, repair or replace the pipes.

7.If none of the above works, you may need to replace the pump or contact a professional service person for maintenance.

1. The water pump has not been running for a long time, which makes the impeller and sealing parts bonded, resulting in motor blockage; Before starting the machine, the water pump should be coiled to confirm that the rotation is flexible before starting.

2. The pump itself is defective, and there is a dead center when it is coiled, so it should be dismantled to check whether the parts of the pump are damaged.

3. For electrical faults, check whether the motor and line have phase loss faults, and whether the protection system has any malfunction, and test the machine after elimination.

No stress may be the following:

1. The cathartic pressure of the pipeline may be caused by the leakage of a certain part of the pipeline, so that the system pressure decreases; At this point, you can close the outlet valve and check the pressure.

2. Lack of water, insufficient water source in the pipeline is also one of the reasons for insufficient pressure, at this time, the noise of the pump can be heard after starting, and the sound of gradually closing the outlet valve will gradually decrease. 3. Impeller corrosion or impeller mouth ring wear; 4. Judge the pressure gauge.

Is it normal,

1. The suction check valve of the oil pump is closed due to failure and cannot be opened;

2. Hydraulic control control valve or control circuit failure;

3. Rupture or air leakage of suction tube;

Fourth, the amount of hydraulic oil is insufficient or too small;

Fifth, the hydraulic pump itself is faulty.

If the gear pump is mainly a leakage problem, there are three ways:

1. At the end face of the gear and the front and rear covers, this place is easy to wear, and the leakage accounts for 80% 2. The top of the tooth and the shell of the pump leak from the high-pressure area to the low-pressure area with the increase of working time.

3. The gear pump is distributed by the meshing line, and there will be leakage if the seal is not good here.

In short, the gear pump has no working pressure, except for external reasons (lack of oil in the mailbox, blockage of the oil filter, rupture of the suction pipe), mainly caused by internal leakage.

The control valve is out of order

If the pressure of the pump pressure cut-off valve is too low, adjust the shut-off valve pressure; The LS valve of the pump is stuck in the low displacement of the pump, the LS valve should be cleaned, and the pressure of the constant power valve of the pump is too low, and the spring of the constant power valve should be adjusted.

The set pressure of the total safety valve of the system is too low. The pressure is set by three control valves on the load sensitive variable pump, the total safety valve is low and the pressure oil is spilled by the mortgage. The adjustment of the pressure valve is related to the pressure and the safety of the guarantee.

The amount of leakage is large. Excessive leakage of the pump, dirt or wear of the oil distribution surface, cleaning the pump or replacing the pump; If the pump leakage is too large, it can be seen from the oil drain pipe, and the pump should be cleaned or replaced; If the system leaks too much and may communicate the high and low voltage components, the leakage should be checked, cleaned, repaired or replaced. The flow rate of the pump cannot supply the leakage, the pressure cannot be established, the seal gap is worn, and the oil is dirty.

Oil absorption problems. The oil deteriorates, the viscosity is too large, the pump is emptied, and the oil should be changed. If the pump does not hold the oil, it will affect the system pressure; Pump evacuation is the main source of hazards in hydraulic systems. When the liquid pressure is lower than the air separation pressure, the air in the liquid separates out.

The motor is not steering.

The motor steering is not right, the motor is not steering, the pump is not steering, it cannot absorb oil, and the system has no pressure. The motor is not steered correctly, and some hydraulic systems can cause damage to the pump. Therefore, before starting the new pump, the correct steering of the pump should be clarified, and the pump shaft should be climbed by hand to fill the suction pipe of the pump with oil; Between the inlet and outlet of the pump, a reverse short-circuit single valve with a suitable diameter is connected.

Hello, I'm glad to answer for you, generally this situation occurs, it may be that the seal is damaged; swash plate wear; wear of plungers and cylinder bores; failure of variable mechanisms; Caused by the wear of the oil distribution pan or the wear of the oil distribution end face of the cylinder block. Can check it out. Hope it helps.

What is the reason why the pressure of the hydraulic pump is not enough to get up,

Reasons for insufficient flow pressure of water pump and treatment methods:

1. The inlet pipeline of the pump is blocked, and the impeller and guide vane flow channel are blocked.

Judgment method: a. Close the outlet valve, the pump can reach the rated pressure, and the pressure of the open valve drops sharply;

b. Open the exhaust valve, the exhaust pressure is lower than before or the air cannot be exhausted.

Solution: Clean up the pipeline impeller, impurities, scaling and other items in the guide vane, and replace and repair the bottom gate.

2. The voltage and speed of the pump are not enough.

Judgment method: a. Check the voltage with an ammeter and check the speed with a tachometer;

b. The frequency of the motor is low.

Solution: a. Increase and stabilize the motor voltage and increase the motor speed;

b. Increase the frequency of the motor, the best frequency is 50Hz.

3. The resistance of the pump pipeline is too large.

Judgment method: a. The outlet valve is fully open, and the outlet pressure is greater than the rated pressure;

b. The inlet and outlet pipelines are smaller than the inlet and outlet of the pump.

Treatment method: a. Reduce the system pressure, or increase the pump pressure;

b. Replace the inlet and outlet pipelines, and the inlet and outlet pipelines are greater than or equal to the diameter of the inlet and outlet pipes.

4. The gap between the rotors of the water pump is too large.

Judging method: a. The rotor is worn, the flow rate and pressure reach the rated pressure at the beginning, and the flow rate and pressure drop after running for a period of time;

b. Frequent fluctuations in pump vibration, current and pressure.

c. The pressure of the balance water pipe is super high.

Solution: Repair or replace the rotor parts, mouth rings, guide vane sleeves, and throttling devices.

5. The pump valve is stuck or cannot be opened.

Judging method: a. Close the valve to see the current and pressure changes, and then open the valve to see the current and pressure changes, in the case of no change, you can determine that the valve has a problem (the pump with water quality crystallization, this kind of problem is common);

b. See if the check valve is reversed.

Treatment: a. Replace the valve or repair the valve;

b. Reinstall check valve.

Insufficient pressure at the outlet of the pump may affect the normal operation of the system. Here are some suggestions to help you solve the problem of insufficient pressure at the outlet of your pump:

Check the operating status of the pump: Make sure that the pump is operating normally and that there is no abnormal noise or vibration. If there is an abnormality, find out the cause and deal with it.

Adjust the valve: Check the valve at the outlet of the pump to make sure it is fully open. If the valve is not fully open, adjust gradually to increase the outlet pressure.

Check the speed of the pump: Make sure that the speed of the pump is up to the rated value. If the speed is too low, check the motor and drive system and adjust to the correct speed.

Clear blockages: Check the pump's suction inlet, impeller, and outlet to make sure there are no blockages. If there is a blockage, clear it to restore normal pressure.

Check the pump for wear: Check the key components of the pump, such as impellers, seals, and bearings, for wear. If it is worn, replace the corresponding parts.

Check the suction pressure: Make sure the suction pressure of the pump is sufficient. Check suction pipes, filters, and fluid levels to ensure proper water supply.

Consider replacing the pump: If the pump does not match the needs of the system, it can result in insufficient outlet pressure. Re-evaluate system requirements and select the right pump.

Pump Running in Series: If the system head demand is high, consider running two or more pumps in series to increase the outlet pressure.

Inspect the pipeline: Check the delivery pipe for leaks or breakages, and if there is a problem, fix it.

Regular Maintenance: Ensure that the pump is regularly inspected and maintained to maintain its good performance.

If the outlet pressure of the pump is insufficient, the following measures can be taken:

1.Check whether the pump is operating normally, if the pump is faulty, it needs to be repaired or replaced in time.

2.Check if the inlet pipe is blocked or that the pipe is too small and needs to be cleaned or replaced.

3.Check if the outlet pipe is blocked or the pipe is too small and needs to be cleaned or replaced.

4.Check whether the water source is normal, such as whether the water level of the water source is too low, whether the water quality is poor, etc., and take corresponding measures.

5.Check whether the pump selection meets the actual needs, if not, you need to replace the appropriate pump.

6.Adjusting the outlet pressure of the pump can be achieved by adjusting the outlet valve of the pump or adjusting the speed of the pump.

In conclusion, there may be a variety of reasons for insufficient pressure at the outlet of the pump, which need to be investigated one by one. If the problem cannot be solved, it is recommended to contact a professional pump maintenance personnel for inspection and repair.

1. First start the water pump inlet pump to fill the water inlet pipe, and then quickly start the multi-stage pump motor for operation.

2. Then check the pressure gauge installed by the water friendsen pipe.

The pressure shows that the pressure is 8 kg cm. Lower than usual output pressure.

3. Then use a wrench.

Adjust the gland nuts inside the bearing body at both ends of the pump and tighten it a little to let the water drip slowly. After adjustment, look at the pressure spine fluid force table, and the pressure does not change much.

4. Proceed to the next step of inspection. The inlet pipe of the original pump was made of hard plastic pipe, which was also considered to be up to standard. Check that there are air bubbles in the water inlet pipe during operation. Here's why.

5. Remove the water inlet pipe joint, cut the pipe short and remove the excess part. Shorten the length of the inlet pipe and wrap the raw meal belt around the joints.

Then install the water inlet pipe and use a soft wire for fastening and binding.

6. Also check the height of the inlet nozzle and the bottom of the pool, at least the distance between the inlet and the bottom is more than 20 cm. In this case, a submersible pump is used.

As the inlet pipe to transport water, it is also the inlet of the multistage pump, and the bottom of the submersible pump is upright at the bottom of the pool, resulting in the inlet flow rate can not meet the requirements.

If there is a sudden lack of pressure when the pump is running normally, you can check out:

1. Check whether it is a pressure gauge.

If the indication is inaccurate, re-test, and calibrate the pressure gauge.

2. Check the inlet tube to the vacuum level.

For reference, whether there are too many inlet elbows or too high suction ports.

3. Check the reasons for electrical appliances, the electric speed is not enough, the liquid intake is insufficient, the filter cylinder is blocked, and check whether the motor is running in single phase.

4. Check the water seal of the pump body.

Hello dear! We'll be happy to answer for you. What should I do if the pump has no pressureA:

1. Check whether the pump is reversed, the water flow and pressure are obviously small in the case of the pump reversal, if the pump is reversed, only the two phases on the motor binding post are needed. 2. Check whether the pump is exhausted; The process of exhaust is to open the exhaust valve, let the water flow naturally into the pump, if you see water flowing out of the exhaust port, then it means that the exhaust is completed, just install the exhaust port. If the pump is not vented before use, then there is air in the pump, and when the pump is running, the water passes through the inlet to the impeller and then transports out, and the efficiency will be greatly reduced.

Therefore, the pump that needs to be filled with water before use must be filled with water and exhausted before being put into use. 3. The impeller of the water pump is damaged or falls off, and the new pump is less likely to have this situation, and the pump that has been used for a long time will wear or fall off. Because the water is not completely pure, there will be some impurities in it, especially the pump for pumping sediment, the wear is more serious, and the submersible sewage pump is easy to suck small stones and then break the pump casing or impeller.

If you find that the flow rate or pressure is much lower after using the pump for a period of time, you can open the pump body to see if the impeller is damaged on the premise that there is no leakage in the pipeline or pump body. 4. Check whether there is water leakage in the pump body or pipeline, the common water leakage will appear at the connection of the pump, that is, the place of the mechanical seal, sometimes dry grinding or some other reasons, the machine seal will be easily damaged; If you are using a packing seal, then a slight dripping is normal.