Responding to the necessary maintenance of the agricultural submersible pump to extend its service life and ensure the normal use of busy:
1, the replacement of lubricants: respectively, open the sealed chamber and the motor inside the oil hole screw, the sealed indoor and motor internal lubricants all release, replace the new oil to ensure that the lubrication system to work properly.
2, check the wearing parts: submersible pump impeller, buckle, sleeve, bearing, etc. are wearing parts. First part of the pump should be removed, check the wearing parts are intact. Do not use damaged and unqualified spare parts.
3, the demolition of the pump shell rust: spring before use, should be opened the last level of the pump shell, turn the wheel after the closing start to prevent the parts rust can not start normal and burn the motor. This maintenance is particularly important for water-filled motors.
4, dry motor: 500 megohm meter measuring submersible pump winding and shell insulation resistance, if the resistance is less than 0.5 megohm, you should get rid of motor moisture. Drying methods are: external drying method, current drying method and the simultaneous co-drying method. External drying method is the use of external heat source for processing, commonly used measures are: ⑴ blowing hot air: the use of electric heater blower (agricultural small submersible pump available hair dryer) blowing hot air to achieve the purpose of drying; ⑵ bulb baking: Sealed box, the use of a number of about 200 watts of bulbs for baking. Note that the baking temperature can not be too high, should be controlled below 125 ℃; ⑶ current drying: According to the submersible pump impedance and power supply size of the motor three-phase winding in series or parallel, and then access a variable resistor, adjust the current For the rated current value of about 60%, power drying.
5, to ensure that the seal: agricultural submersible pump on the sealing requirements are very strict, in the replacement of sealed indoor lubricating oil, if found oil turbidity and high water content, you must replace the whole or replace the sealed box or seal ring to ensure its seal Good performance.
6, check the bearing: check the motor part of the upper and lower bearings, if found to wear or clearance is too large, to be timely replacement of new bearings, is strictly prohibited "sick" improvise. Check the method is as follows: If the motor is running, resulting in "carbazole" sound, and the cycle is proportional to the speed, and hand when the rotor is laborious, bearing raceway is a bit astringent or avulsion phenomenon; if the bearing intermittent Of the "choking choked" sound, hand rotation of the rotor when there is uncertainty of the dead point, the ball is generally damaged, broken inner ring or broken ball. Encountered the above situation, you must replace the bearings, so as to avoid greater damage.
7, to ensure that bearing lubrication: the water-filled submersible pump should be checked to replace the upper and lower end of the bearing chamber skeleton oil seal and lithium grease. To ensure that the bearing long-term work in a good state of lubrication.
2017年3月16日星期四
What are the advantages of vertical mixed flow pump?
Mixed flow pump, commonly used in farmland irrigation and drainage, industrial and urban water supply and drainage and other occasions. According to the different types, mixed flow pump is divided into horizontal mixed flow pump and vertical mixed flow pump. Although both are mixed flow pumps, but both have obvious differences and differences. So, for the horizontal mixed flow pump, vertical mixed flow pump which advantages and advantages?
From the author years of experience in the pump, vertical mixed flow pump has the following major advantages:
1, simple operation
Horizontal mixed flow pump, because the impeller is above the water, before the pump starts, use a vacuum pump to the pump water. While the vertical mixed-flow pump, because its impeller usually sink in the water, can be started directly.
2, the installation area is small
Compared to the horizontal mixed flow pump, vertical mixed flow pump installation area only need horizontal mixed flow pump is generally enough. Greatly saves the floor space.
3, more anti-cavitation
Vertical impeller pump impeller is usually sinking in the water, can take advantage of the NPSH can take a larger number. For this reason, cavitation is less likely to occur.
From the author years of experience in the pump, vertical mixed flow pump has the following major advantages:
1, simple operation
Horizontal mixed flow pump, because the impeller is above the water, before the pump starts, use a vacuum pump to the pump water. While the vertical mixed-flow pump, because its impeller usually sink in the water, can be started directly.
2, the installation area is small
Compared to the horizontal mixed flow pump, vertical mixed flow pump installation area only need horizontal mixed flow pump is generally enough. Greatly saves the floor space.
3, more anti-cavitation
Vertical impeller pump impeller is usually sinking in the water, can take advantage of the NPSH can take a larger number. For this reason, cavitation is less likely to occur.
Deep well pump selection method and principle
Deep well pump selection method and principle
Deep well pump can be called deep water pump, well pump, well submersible pump, he is a kind of submersible pump, but deep well pump pump inside the number of impellers a lot, so we call it multi-stage submersible pump.
Deep well pump before pumping the pump, the first step is to work with water. There is a water hole above the motor, must be filled with water to cool the motor, then install the outlet pipe and then connect the cable, the deep well pump into the liquid completely submerged, open pump, the impeller high-speed rotation, the liquid with the leaves Rotate together, in the role of centrifugal force, flying out of the impeller outward, the liquid injection in the pump chamber diffusion speed gradually slow down, the pressure gradually increased, and then from the pump outlet, the discharge pipe out. At this point, at the center of the blade at the center of the liquid is thrown to the surrounding and the formation of both no air and no liquid vacuum low pressure area, liquid pool in the pool of atmospheric pressure under the action of the suction pipe into the pump, the liquid is so continuous Constantly being sucked up from the liquid pool and continuously flowing out of the discharge pipe.
Submersible pump basic parameters
Including flow, head, pump speed, matching power, rated current, efficiency, outlet diameter and so on.
Submersible pump composition
By the control cabinet, diving cable, Yang water pipe, submersible pump and submersible motor.
Submarine pump main purpose and scope of application
Including mine rescue, construction and construction of drainage, water and agricultural irrigation and drainage, industrial water cycle, urban and rural residents cited water supply, and even disaster relief and so on.
Deep well pump has the characteristics of high flow and high head. Let's take a look at the deep well pump
1. Deep well pump should be used in the sand content of less than 0.01% of the water source, the pump room equipped with pre-water tank, the capacity should meet the start of a pre-run water. The following are the same as the "
2. New or overhauled deep well pump, should adjust the pump shell and the impeller clearance, the impeller in the operation shall not friction with the shell.
3. Deep well pump should be running before the water into the shaft and bearing the shell for pre-run.
4. Before the start of the deep well pump, the inspection items should meet the following requirements:
1) base base bolts are tightened;
2) axial clearance to meet the requirements, adjust the bolt nuts have been installed;
3) the packing gland is tightened and lubricated;
4) motor bearings have been lubricated;
5) Rotate the motor rotor and stop mechanism by hand are flexible and effective.
5. Deep well pump can not be idle in the case of water. Pumps One or two impellers should be immersed below water level 1m. Operation should always observe the changes in the water level in the well.
6. During operation, when you find a large vibration around the foundation, you should check the pump bearing or motor filler wear; when excessive wear and leakage, should replace the new pieces.
7. has been sucked, drained with mud deep well pump, before stopping the pump, the application of water rinse.
8. Before stopping the pump, you should close the water valve, cut off the power, lock the switch box. When the winter is disabled, the water should be placed in the pump.
The above describes the basic principles of deep well pump and precautions, we have to figure out the parameters of deep well water pump to confirm after the selection. Deep well pump selection method is not so complicated, according to the actual requirements to choose deep well pump to do foolproof.
Deep well pump can be called deep water pump, well pump, well submersible pump, he is a kind of submersible pump, but deep well pump pump inside the number of impellers a lot, so we call it multi-stage submersible pump.
Deep well pump before pumping the pump, the first step is to work with water. There is a water hole above the motor, must be filled with water to cool the motor, then install the outlet pipe and then connect the cable, the deep well pump into the liquid completely submerged, open pump, the impeller high-speed rotation, the liquid with the leaves Rotate together, in the role of centrifugal force, flying out of the impeller outward, the liquid injection in the pump chamber diffusion speed gradually slow down, the pressure gradually increased, and then from the pump outlet, the discharge pipe out. At this point, at the center of the blade at the center of the liquid is thrown to the surrounding and the formation of both no air and no liquid vacuum low pressure area, liquid pool in the pool of atmospheric pressure under the action of the suction pipe into the pump, the liquid is so continuous Constantly being sucked up from the liquid pool and continuously flowing out of the discharge pipe.
Submersible pump basic parameters
Including flow, head, pump speed, matching power, rated current, efficiency, outlet diameter and so on.
Submersible pump composition
By the control cabinet, diving cable, Yang water pipe, submersible pump and submersible motor.
Submarine pump main purpose and scope of application
Including mine rescue, construction and construction of drainage, water and agricultural irrigation and drainage, industrial water cycle, urban and rural residents cited water supply, and even disaster relief and so on.
Deep well pump has the characteristics of high flow and high head. Let's take a look at the deep well pump
1. Deep well pump should be used in the sand content of less than 0.01% of the water source, the pump room equipped with pre-water tank, the capacity should meet the start of a pre-run water. The following are the same as the "
2. New or overhauled deep well pump, should adjust the pump shell and the impeller clearance, the impeller in the operation shall not friction with the shell.
3. Deep well pump should be running before the water into the shaft and bearing the shell for pre-run.
4. Before the start of the deep well pump, the inspection items should meet the following requirements:
1) base base bolts are tightened;
2) axial clearance to meet the requirements, adjust the bolt nuts have been installed;
3) the packing gland is tightened and lubricated;
4) motor bearings have been lubricated;
5) Rotate the motor rotor and stop mechanism by hand are flexible and effective.
5. Deep well pump can not be idle in the case of water. Pumps One or two impellers should be immersed below water level 1m. Operation should always observe the changes in the water level in the well.
6. During operation, when you find a large vibration around the foundation, you should check the pump bearing or motor filler wear; when excessive wear and leakage, should replace the new pieces.
7. has been sucked, drained with mud deep well pump, before stopping the pump, the application of water rinse.
8. Before stopping the pump, you should close the water valve, cut off the power, lock the switch box. When the winter is disabled, the water should be placed in the pump.
The above describes the basic principles of deep well pump and precautions, we have to figure out the parameters of deep well water pump to confirm after the selection. Deep well pump selection method is not so complicated, according to the actual requirements to choose deep well pump to do foolproof.
2017年3月14日星期二
Submersible Fountain pump working principle
QS submersible fountain pump is a fountain dedicated pump, the pump motor material using high-quality cold-rolled Xianguang, increase the number of motor windings and diving line diameter, cable with three-phase four-wire JHS fountain dedicated cable, impeller increased The anti-loosening device, the motor cavity using imported anti-rust enamel, through the above structure to improve the submersible pump inertia is small, so the response speed, bearing the use of high-performance dedicated shaft, improve the insulation level, so as to meet the frequent needs of the music fountain frequent start.
What is the working principle of the fountain pump? The following legislation will be the new irrigation and drainage equipment will introduce the working principle of the fountain pump.
Before opening the fountain pump, the suction pipe and the pump must be filled with liquid. After the pump is pumped, the impeller rotates at high speed, and the liquid rotates with the blade. Under the action of centrifugal force, it leaves the impeller outward and the liquid is gradually slowed down in the pump chamber, and the pressure gradually increases, Pump outlet, discharge pipe out.
At this point, at the center of the blade at the center of the liquid is thrown to the surrounding and the formation of both no air and no liquid vacuum low pressure area, liquid pool in the pool of atmospheric pressure under the action of the suction pipe into the pump, the liquid is so continuous Constantly being sucked up from the liquid pool and continuously flowing out of the discharge pipe.
What is the working principle of the fountain pump? The following legislation will be the new irrigation and drainage equipment will introduce the working principle of the fountain pump.
Before opening the fountain pump, the suction pipe and the pump must be filled with liquid. After the pump is pumped, the impeller rotates at high speed, and the liquid rotates with the blade. Under the action of centrifugal force, it leaves the impeller outward and the liquid is gradually slowed down in the pump chamber, and the pressure gradually increases, Pump outlet, discharge pipe out.
At this point, at the center of the blade at the center of the liquid is thrown to the surrounding and the formation of both no air and no liquid vacuum low pressure area, liquid pool in the pool of atmospheric pressure under the action of the suction pipe into the pump, the liquid is so continuous Constantly being sucked up from the liquid pool and continuously flowing out of the discharge pipe.
Characteristics and Application of Submersible Fountain Pump
Submersible Fountain pump its shell, over flow parts and external parts are made of cast iron or stainless steel (304,316,316 L) made, and the product also retains the original fountain dedicated pump performance.
Fountain dedicated pump features:
1, the use of cast iron or stainless steel, pump to improve the corrosion resistance.
2, impeller with special materials to prevent the impeller when the impeller loose.
3, leakage protection measures: the use of fixed potential grounding device.
4, on the basis of the original ordinary pump, according to the requirements of the fountain dedicated pump, the company after several tests, in the technical development, continuous improvement of processing materials, fountain dedicated pump can be frequent start, completely suitable for the use of music fountain.
5, the pump with stainless steel filter cover, three-phase four-wire cable.
6, stainless steel fountain pump for automatic water injection function.
7, the motor is self-circulating water-cooled.
Fountain submersible pump is mainly used for fountain water supply, aquaculture and other places. Widely used in low-lift cities, farmland irrigation and drainage, sprinkler irrigation, industrial and civil supply and drainage systems, hills, mountain water diversion, and low-lying areas to remove water.
Fountain dedicated pump features:
1, the use of cast iron or stainless steel, pump to improve the corrosion resistance.
2, impeller with special materials to prevent the impeller when the impeller loose.
3, leakage protection measures: the use of fixed potential grounding device.
4, on the basis of the original ordinary pump, according to the requirements of the fountain dedicated pump, the company after several tests, in the technical development, continuous improvement of processing materials, fountain dedicated pump can be frequent start, completely suitable for the use of music fountain.
5, the pump with stainless steel filter cover, three-phase four-wire cable.
6, stainless steel fountain pump for automatic water injection function.
7, the motor is self-circulating water-cooled.
Fountain submersible pump is mainly used for fountain water supply, aquaculture and other places. Widely used in low-lift cities, farmland irrigation and drainage, sprinkler irrigation, industrial and civil supply and drainage systems, hills, mountain water diversion, and low-lying areas to remove water.
2017年2月16日星期四
Hot water well submersible pump supporting high temperature cable selection
The specifications of the power cable with the hot water well submersible pump motor are determined by the heating and voltage drop of the cable. In addition to the need to control a certain current density to limit the cable temperature, the longer the length of the cable, the greater the voltage drop of the cable, the motor starting performance, performance and reliability of the greater impact. Therefore, the same with the two sets of diving motor, when equipped with hot water submersible pump head different, with different cable length, the requirements of the cable cross-section is not the same. In accordance with GB / T2816 "well submersible pump" standard, the water temperature is 25%, the current rating, the cable voltage drop should be ≤ 5% of the rated voltage. Which can be obtained when the power supply voltage is 380V, different power wells with hot water submersible pump motor with a certain size of the cable when the maximum allowable length. When the power supply voltage is higher and more stable or relatively large capacity of the power supply transformer, the voltage is high, more stable, the submersible pump motor with the same length of the cable to allow the appropriate length of the appropriate length Or with the cable cross-section appropriate to reduce the cable to reduce the cost of configuration) at this time with the submersible motor with the maximum allowable length of the cable, when the well with hot water submersible pump head is very high, the motor down well, with Cable length is longer, and the transformer power supply quality is poor, the motor starting is very difficult: starting current is very large, long cable voltage drop is very large, so that the motor terminal voltage is much lower, the starting current is further increased, the cable pressure drop , The starting torque is lower, resulting in a vicious bang, not only the motor starting difficult, forced start may cause electric = machine winding damage. At this time, in addition to the provisions of the cable should be configured, it is best to increase the transformer supply voltage.
The working principle and characteristics of fountain pump
The working principle and characteristics of fountain pump
1, the working principle of the fountain pump
Before the start of the fountain submersible pump, the pump and inlet pipe filled with water, pump operation, the high-speed rotation of the impeller generated by the centrifugal force, the impeller flow of water was thrown around, into the volute, impeller inlet to form a vacuum , The pool of water at the outside world pressure along the suction pipe was sucked to add this space. And then inhaled water and by the impeller by the volute and into the outlet pipe. It can be seen, if the centrifugal pump impeller constantly rotating, you can continue to absorb water, water, water can continue from low to high or distant. In summary, the fountain pump is due to the high-speed rotation of the impeller generated by the centrifugal force, the water phase of the high.
2, the general characteristics of the fountain pump
(1) The flow direction of the water along the fountain is in the axial direction of the impeller, perpendicular to the axial flow, that is, the direction of the incoming and outgoing water is 90 °.
(2) because the fountain pump impeller inlet to form a vacuum suction, so before the start of the pump and the suction pipe must be filled with water, or vacuum pump to evacuate the air to form a vacuum, and pump shell and suction pipe must be strictly sealed, Do not leak, otherwise the shape is not a vacuum, it can not absorb the water to.
1, the working principle of the fountain pump
Before the start of the fountain submersible pump, the pump and inlet pipe filled with water, pump operation, the high-speed rotation of the impeller generated by the centrifugal force, the impeller flow of water was thrown around, into the volute, impeller inlet to form a vacuum , The pool of water at the outside world pressure along the suction pipe was sucked to add this space. And then inhaled water and by the impeller by the volute and into the outlet pipe. It can be seen, if the centrifugal pump impeller constantly rotating, you can continue to absorb water, water, water can continue from low to high or distant. In summary, the fountain pump is due to the high-speed rotation of the impeller generated by the centrifugal force, the water phase of the high.
2, the general characteristics of the fountain pump
(1) The flow direction of the water along the fountain is in the axial direction of the impeller, perpendicular to the axial flow, that is, the direction of the incoming and outgoing water is 90 °.
(2) because the fountain pump impeller inlet to form a vacuum suction, so before the start of the pump and the suction pipe must be filled with water, or vacuum pump to evacuate the air to form a vacuum, and pump shell and suction pipe must be strictly sealed, Do not leak, otherwise the shape is not a vacuum, it can not absorb the water to.
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