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The stainless steel self-priming jet pump is made of stainless steel material, with a leak proof design and strong sealing performance. It has corrosion resistance and self-priming function. Compact structure, low noise, intelligent control, and simple maintenance. The principle is that high-pressure water flows out at high speed through a nozzle, forming a local vacuum zone and sucking in the liquid to be pressurized; The mixed fluid converts kinetic energy into pressure energy in the diffusion tube, achieving pressurized output. Widely used in household water supply, agricultural irrigation, well water pumping and other scenarios.
1.Main Components
Material and Structure: Stainless steel (such as 304, 2Gr13) is the main material, and the pump body, pump shaft, and pump cover are made of stainless steel. Some models of guide vanes and impellers are made of engineering plastic, and screws and other components that come into contact with liquids are also made of stainless steel to avoid rust pollution and extend their service life.
Composition: It consists of an electric motor, a water pump (including a centrifugal impeller and an injector), and a sealing device. A single end mechanical seal is used between the motor and the water pump, and an O-ring oil resistant rubber ring is used for static sealing.
2.Feature
Corrosion resistance: Stainless steel material is suitable for handling corrosive media such as chemical liquids, food raw materials, etc.
Compact structure: small size, light weight, flexible installation, supports low or outdoor installation.
No mechanical moving parts: relying on fluid power, stable operation, and low maintenance costs.
Self suction capability: Some models have self-priming function and do not require pumping before starting.
Low noise: No mechanical transmission components, low operating noise.
3.Working Principle
Fluid power drive: High pressure working fluid (such as water, steam) is sprayed out at high speed through a nozzle, forming a low-pressure zone and sucking in the transported liquid; After mixing and exchanging energy in the mixing chamber, the two are pressurized and discharged through a diffusion tube.
Energy conversion: The kinetic energy of a fluid is converted into pressure energy to achieve liquid transport or vacuum suction.
4. Application Areas
Health and food industry: transporting liquids with high hygiene requirements such as milk and beverages.
Chemical and Environmental Protection: Treatment of corrosive media, wastewater, and exhaust gas purification.
Pharmaceutical and Bioengineering: Aseptic Liquid Delivery.
Industrial cleaning and painting: equipment cleaning, coating spraying.
Vacuum system: used for processes such as vacuum drying and distillation.
5.Working Conditions
Medium requirements: Suitable for clear water, low solid impurity liquids (solid content ≤ 0.01%), pH value 6.5-8.5, chloride ion content ≤ 400mg/L.
Environmental requirements: The motor must be completely submerged (submersible pump model), with a voltage of 220V/380V ± 5% and a frequency of 50Hz ± 1%.
Temperature range: Working water temperature+5 ℃ to+105 ℃ (some models).
6.Parameter Range
| Flow rate | 1.5-3.0m ³/h (small sanitary pump) |
| Head | 16-25m (single-stage pump) |
| Speed | 2900r/min (conventional motor) |
| Power | Depending on the model, the common range is 0.5-5.5kW. |
7.Common Problems
7.1 Water leakage issue
Phenomenon: Leakage of liquid at the pump body, pipeline interface or seal.
Reason: Aging of seals (such as O-ring and mechanical seal wear), loose pipeline interfaces, or cracks in the pump body.
Solution:
Replace worn seals (such as mechanical seals or O-rings).
Tighten loose pipe joints. If water leakage occurs due to corrosion or cracks, damaged components need to be replaced.
7.2 Unable to discharge water or insufficient flow rate
Phenomenon: The pump does not produce water or the water pressure is low after starting.
Reason:
Air leakage or blockage in the suction pipeline (such as blockage of the filter screen by impurities).
The impeller and nozzle are stuck or worn by foreign objects.
Solution:
Check and clean the blockage in the suction pipeline, filter screen, and impeller/nozzle.
Repair the leakage points in the pipeline (such as replacing damaged pipes or reinforcing connections).
Replace severely worn impellers or nozzles.
7.3 Motor overheating or frequent start stop
Phenomenon: Abnormal heating or frequent starting of the motor.
Reason:
Voltage instability or overload operation.
Leakage in the water pipe caused the pressure switch to trigger incorrectly.
Solution:
Check the stability of the power supply and avoid overloading (such as replacing the motor with an appropriate power).
Repair the leaking pipeline and empty the air in the system to ensure that the pressure switch is working properly.
7.4 Abnormal vibration or noise
Phenomenon: The pump body vibrates violently or produces abnormal noise during operation.
Reason:
Impeller/bearing wear, pump shaft bending or uneven installation.
There is residual air in the suction pipe.
Solution:
Replace damaged bearings or correct/replace bent pump shafts.
Adjust the installation position of the pump body to ensure horizontal fixation.
Drain the air from the pipeline and check the sealing of the suction pipe.
7.5 Self suction function failure
Phenomenon: Unable to automatically absorb water or prolonged self-priming time.
Reason:
Air leakage in the suction pipeline or high gas content in the medium.
Mechanical seal wear causes air to enter the pump body.
Solution:
Thoroughly inspect the sealing of the pipeline and replace any leaking pipes or joints.
Replace the mechanical seal and ensure that there is no air residue inside the pump.
7.6 Decreased efficiency or increased energy consumption
Phenomenon: The boosting effect weakens and the power consumption increases.
Reason:
The scaling or wear of the impeller/nozzle leads to a decrease in energy conversion efficiency.
Variable frequency controller malfunction or improper parameter settings (intelligent model).
Solution:
Regularly clean the scale inside the impeller, nozzle, and diffuser tube.
Calibrate the parameters of the variable frequency controller or replace the faulty module
7. Maintenance suggestions
Regular inspection: Clean the filter screen monthly, check the condition of the seals, and replace the O-ring once a year.
Water quality management: Install a pre filter to prevent particulate matter from entering the pump body (impurity content ≤ 0.1%).
Environmental adaptation: Ensure that the working water temperature is within the range of+5 ℃ to+105 ℃, and avoid operating in extreme environments
8. Installation steps
8.1 Preparation before installation
Check components: Confirm that there are no loose screws, blockages, or damages in the components of the booster pump, and ensure that the seals (such as O-rings) are intact.
Determine installation location: Prioritize installing at the household main water pipe to ensure the boosting effect of the entire house's water supply.
8.2 Installation steps
Close the main valve and disconnect the pipe
Close the main water valve of the household, cut off the water pipe at the target location, and reserve the length of the interface (it is recommended to reserve 5-8cm at both ends).
If the pipeline is made of PVC material, the port can be treated with a hot melt machine; Metal pipelines need to be cleaned of burrs and wrapped with raw material tape to enhance sealing.
Connect the interface with the pump body
Connect the inlet and outlet of the water pump to the pipeline using a quick connector or soft connector (such as a 32 turn 4-point core), ensuring that the direction of the interface is consistent with the direction of water flow (indicated by the arrow).
If the installation space is limited, the pump body can be fixed vertically or horizontally, but it is necessary to ensure that the inlet/outlet is aligned horizontally or vertically.
Fixed and sealed treatment
Secure the pump body with brackets or buckles to prevent vibration and loosening during operation.
Apply sealant at the threaded connection to prevent leakage (such as water pipe sealant or raw tape).
Power on and debugging
After connecting the power, slowly open the main valve and observe the operation status of the pump body.
Check the water pressure (such as using a pressure gauge to confirm if it reaches the standard value of 2.5Bar) and whether the noise is normal.
The stainless steel self-priming jet pump is made of stainless steel material, with a leak proof design and strong sealing performance. It has corrosion resistance and self-priming function. Compact structure, low noise, intelligent control, and simple maintenance. The principle is that high-pressure water flows out at high speed through a nozzle, forming a local vacuum zone and sucking in the liquid to be pressurized; The mixed fluid converts kinetic energy into pressure energy in the diffusion tube, achieving pressurized output. Widely used in household water supply, agricultural irrigation, well water pumping and other scenarios.
1.Main Components
Material and Structure: Stainless steel (such as 304, 2Gr13) is the main material, and the pump body, pump shaft, and pump cover are made of stainless steel. Some models of guide vanes and impellers are made of engineering plastic, and screws and other components that come into contact with liquids are also made of stainless steel to avoid rust pollution and extend their service life.
Composition: It consists of an electric motor, a water pump (including a centrifugal impeller and an injector), and a sealing device. A single end mechanical seal is used between the motor and the water pump, and an O-ring oil resistant rubber ring is used for static sealing.
2.Feature
Corrosion resistance: Stainless steel material is suitable for handling corrosive media such as chemical liquids, food raw materials, etc.
Compact structure: small size, light weight, flexible installation, supports low or outdoor installation.
No mechanical moving parts: relying on fluid power, stable operation, and low maintenance costs.
Self suction capability: Some models have self-priming function and do not require pumping before starting.
Low noise: No mechanical transmission components, low operating noise.
3.Working Principle
Fluid power drive: High pressure working fluid (such as water, steam) is sprayed out at high speed through a nozzle, forming a low-pressure zone and sucking in the transported liquid; After mixing and exchanging energy in the mixing chamber, the two are pressurized and discharged through a diffusion tube.
Energy conversion: The kinetic energy of a fluid is converted into pressure energy to achieve liquid transport or vacuum suction.
4. Application Areas
Health and food industry: transporting liquids with high hygiene requirements such as milk and beverages.
Chemical and Environmental Protection: Treatment of corrosive media, wastewater, and exhaust gas purification.
Pharmaceutical and Bioengineering: Aseptic Liquid Delivery.
Industrial cleaning and painting: equipment cleaning, coating spraying.
Vacuum system: used for processes such as vacuum drying and distillation.
5.Working Conditions
Medium requirements: Suitable for clear water, low solid impurity liquids (solid content ≤ 0.01%), pH value 6.5-8.5, chloride ion content ≤ 400mg/L.
Environmental requirements: The motor must be completely submerged (submersible pump model), with a voltage of 220V/380V ± 5% and a frequency of 50Hz ± 1%.
Temperature range: Working water temperature+5 ℃ to+105 ℃ (some models).
6.Parameter Range
| Flow rate | 1.5-3.0m ³/h (small sanitary pump) |
| Head | 16-25m (single-stage pump) |
| Speed | 2900r/min (conventional motor) |
| Power | Depending on the model, the common range is 0.5-5.5kW. |
7.Common Problems
7.1 Water leakage issue
Phenomenon: Leakage of liquid at the pump body, pipeline interface or seal.
Reason: Aging of seals (such as O-ring and mechanical seal wear), loose pipeline interfaces, or cracks in the pump body.
Solution:
Replace worn seals (such as mechanical seals or O-rings).
Tighten loose pipe joints. If water leakage occurs due to corrosion or cracks, damaged components need to be replaced.
7.2 Unable to discharge water or insufficient flow rate
Phenomenon: The pump does not produce water or the water pressure is low after starting.
Reason:
Air leakage or blockage in the suction pipeline (such as blockage of the filter screen by impurities).
The impeller and nozzle are stuck or worn by foreign objects.
Solution:
Check and clean the blockage in the suction pipeline, filter screen, and impeller/nozzle.
Repair the leakage points in the pipeline (such as replacing damaged pipes or reinforcing connections).
Replace severely worn impellers or nozzles.
7.3 Motor overheating or frequent start stop
Phenomenon: Abnormal heating or frequent starting of the motor.
Reason:
Voltage instability or overload operation.
Leakage in the water pipe caused the pressure switch to trigger incorrectly.
Solution:
Check the stability of the power supply and avoid overloading (such as replacing the motor with an appropriate power).
Repair the leaking pipeline and empty the air in the system to ensure that the pressure switch is working properly.
7.4 Abnormal vibration or noise
Phenomenon: The pump body vibrates violently or produces abnormal noise during operation.
Reason:
Impeller/bearing wear, pump shaft bending or uneven installation.
There is residual air in the suction pipe.
Solution:
Replace damaged bearings or correct/replace bent pump shafts.
Adjust the installation position of the pump body to ensure horizontal fixation.
Drain the air from the pipeline and check the sealing of the suction pipe.
7.5 Self suction function failure
Phenomenon: Unable to automatically absorb water or prolonged self-priming time.
Reason:
Air leakage in the suction pipeline or high gas content in the medium.
Mechanical seal wear causes air to enter the pump body.
Solution:
Thoroughly inspect the sealing of the pipeline and replace any leaking pipes or joints.
Replace the mechanical seal and ensure that there is no air residue inside the pump.
7.6 Decreased efficiency or increased energy consumption
Phenomenon: The boosting effect weakens and the power consumption increases.
Reason:
The scaling or wear of the impeller/nozzle leads to a decrease in energy conversion efficiency.
Variable frequency controller malfunction or improper parameter settings (intelligent model).
Solution:
Regularly clean the scale inside the impeller, nozzle, and diffuser tube.
Calibrate the parameters of the variable frequency controller or replace the faulty module
7. Maintenance suggestions
Regular inspection: Clean the filter screen monthly, check the condition of the seals, and replace the O-ring once a year.
Water quality management: Install a pre filter to prevent particulate matter from entering the pump body (impurity content ≤ 0.1%).
Environmental adaptation: Ensure that the working water temperature is within the range of+5 ℃ to+105 ℃, and avoid operating in extreme environments
8. Installation steps
8.1 Preparation before installation
Check components: Confirm that there are no loose screws, blockages, or damages in the components of the booster pump, and ensure that the seals (such as O-rings) are intact.
Determine installation location: Prioritize installing at the household main water pipe to ensure the boosting effect of the entire house's water supply.
8.2 Installation steps
Close the main valve and disconnect the pipe
Close the main water valve of the household, cut off the water pipe at the target location, and reserve the length of the interface (it is recommended to reserve 5-8cm at both ends).
If the pipeline is made of PVC material, the port can be treated with a hot melt machine; Metal pipelines need to be cleaned of burrs and wrapped with raw material tape to enhance sealing.
Connect the interface with the pump body
Connect the inlet and outlet of the water pump to the pipeline using a quick connector or soft connector (such as a 32 turn 4-point core), ensuring that the direction of the interface is consistent with the direction of water flow (indicated by the arrow).
If the installation space is limited, the pump body can be fixed vertically or horizontally, but it is necessary to ensure that the inlet/outlet is aligned horizontally or vertically.
Fixed and sealed treatment
Secure the pump body with brackets or buckles to prevent vibration and loosening during operation.
Apply sealant at the threaded connection to prevent leakage (such as water pipe sealant or raw tape).
Power on and debugging
After connecting the power, slowly open the main valve and observe the operation status of the pump body.
Check the water pressure (such as using a pressure gauge to confirm if it reaches the standard value of 2.5Bar) and whether the noise is normal.