Analysis of All Stainless Steel Submersible Pump Maintenance

First, the whole stainless steel submersible pump does not cause water Analysis of the reasons for the inlet pipe and pump atmosphere
(1) stainless steel submersible pump is not filled before the start of irrigation and adequate water, irrigation seems to have been spilled from the vent hole, but not completely turn the pump shaft axis exclusion atmosphere, resulting in a little residual atmosphere into the water pipe or pump.
(2) with the water pump into the water pipe horizontal section against the current bias application of more than 0.5% of the landing slope, connecting the pump inlet side of the highest, do not completely level. Upward tilt, the inlet pipe will retain the atmosphere, reducing the water and vacuum pump, affecting water absorption.
(3) water pump packing has been worn due to long-term use or packing pressure too loose, resulting in a large number of water from the packing and pump shaft shaft gap in the jet, the result is outside the atmosphere from these gaps into the pump internal, affecting the water.
(4) into the water pipe due to long-term diving, the emergence of corrosion of the wall hole, the pump water surface after the non-stop, when these holes bare water, the atmosphere from the hole into the public water pipes.
(5) into the pipe bend at the cracks, water pipes and water pump at the junction of a small gap, there is probably the atmosphere into the water pipe.
Second, the stainless steel submersible pump speed is low
(1) human factors. Some users with the original motor damage, free to go with another motor to start, resulting in a small flow, the head is not the result of low water Sheung Shui.
(2) the pump itself dull obstacles. Impeller and shaft fastening nut loosening or bending deformation pump shaft, causing the impeller to move more directly friction with the pump, or bearing damage, have about low pump speed.
(3) power machine repair not working. Motor winding due to waste, and loss of magnetic field, the maintenance of winding turns, wire diameter, wiring changes, or maintenance failure to completely remove the factors that will make the pump speed changes.
Third, the stainless steel submersible pump suction is too large Some of the water deeper, some of the water potential outside the flat, and sloppy pumps allow suction, resulting in less water absorption or simply not Sheung Shui results. To know the pump suction can create a vacuum is limited, the absolute vacuum suction is about 10 meters high water column, and the pump can not create an absolute vacuum. Vacuum degree is too large, easy to pump water vaporification of the pump things bad luck. The centrifugal pump has its maximum allowable suction, as usual between 3-8.5 meters. When the pump is not easy to install only simple.
Fourth, the stainless steel submersible water flow out of the resistance loss is too large Some users to measure the reservoir or the water tower to the water source vertical distance is also slightly smaller than the pump head, but the water is small or not to mention Sheung Shui. The reason is often too long pipe, pipe bend, loss of resistance in the water pipe is too large. The reason is often too long pipe, pipe bend, loss of resistance in the water pipe is too large. As usual, 90 degrees than the 120-degree elbow bend resistance, each 90 degrees bend head loss of 0.5-1 meters of the letter, every 20 meters of pipe resistance can head loss of the letter 1 meter. In addition, some users are also free to pump into and out of pipe diameter, which have a positive impact on the head.
Fifth, other factors
(1) the bottom valve does not open. Usually the pump is too long to stay, the end of the valve washer was glued to death, no gasket valve at the end of the rust will die.
(2) at the end of the valve filter network is blocked; or bottom valve diving in the sludge layer caused by filter plug.
(3) impeller wear and tear. Impeller blades by long-term use of wear and tear, affecting the pump performance.
(4) gate valve check valve can be obstructed or blocked will result in reduced flow pumping not Sheung Shui.
(5) export pipeline leakage will also affect the amount of water.
6, commonly used to prevent the diagnosis of simple configuration essentials Simple state monitoring essentials auscultation, touch measurement and observation methods.
1, auscultation configuration normal operation, accompanied by sound always has a certain temperament and rhythm. Familiar with these normal temperament and rhythm, the human auditory outcome can be compared to whether there is a configuration of heavy, miscellaneous, strange, chaos is very noisy, decisive configuration internal loosening, impact, unyielding balance and other risks. Hammered with a hammer parts, listen to whether it has broken noise, can be decisive whether cracks produced. Electronic stethoscope is a vibration acceleration sensor. It will configure the vibration state into electrical signals and amplification, the workers use the headset to monitor the operation configuration vibration sound, in order to achieve the qualitative measurement of the sound. Measuring the same measuring point, the difference of time, the same speed, the same signal under the operating conditions, and compared to decisive configuration whether the existence of obstacles. When the headset appears loud and tapering noise, the vibration frequency is higher, as is usually a relatively small size, strength is relatively high parts of the local defects or small cracks. When the headset came turbid low noise, to clarify the vibration frequency is low, usually the size is relatively large, relatively low strength parts have a large crack or defect. When the headphone out of the noise is usually enhanced, to clarify the obstacles to positive growth, the greater the sound, hinder the more tense. When the headset out of the noise is chaotic Discipline appears intermittently, that part or parts have been loose.
2, touch test with human touch can be configured to monitor the temperature, vibration and gap change environment. Human nerve fibers on the temperature than the force-sensitive, you can accurately identify the temperature within 80 ℃. When the temperature is about 0 ℃, feel cold, if the touch will produce a longer time Bianzhi pain. 10 ℃ or so, feel cooler, but as usual can tolerate. 20 ℃ or so, feel cooler, war time extension, feel gradually warm. 30 ℃ or so, feel slightly warm, a sense of stability. 40 ℃ or so, feel more hot, there are slightly hot that. 50 ℃ or so, feel more hot, if the palm with a longer time, there will be a sense of sweat. 60 ℃ or so, feel very hot, but generally can tolerate 10s between. 70 ℃ or so, feel hot burning pain, as usual can only tolerate 3s between, the hand will quickly touch the red. When touched, try to touch and then fine touch to predict the mechanical temperature environment. With manual shaking parts can be out of 0.1mm-0.3mm gap size. Touch the mechanical vibration can be that the strength of the changes and whether the birth of a blow, as well as slide plate crawling environment. With the appearance of the thermocouple probe thermometer to measure rolling bearings, sliding bearings, headstock, motor and other mechanical surface temperature, the decisive heat is very.