Herringbone Style Engineered Flooring
Herringbone Style Engineered Flooring
Established in 2009, Jiangsu SunYo Flooring Co., Ltd is a privately owned enterprise, it`s specialized in producing Laminate Flooring,engineered flooring and other kind of floorings. Combined with the company's own four well-known brands, SunYo has become one of the industry leader in laminate/engineered flooring. Based on the road of independent innovation, the company has always strictly required the company itself with high standards and high positioning to continuously improve product quality. Continuously introduce advanced production equipment, multiple modern assembly lines, sophisticated testing instruments, adhere to "people-oriented, market-oriented, and innovation for development", and constantly sum up experience, strong scientific research strength, and innovative development of the market Marketing strategy points. A high-quality product research and development center has been established in the industry, and a number of patented technologies have been obtained. Please contact us freely if you have interested in our products.
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Pump vibration causes 1. Vibration and speed at the same time the vibration caused by this vibration are the main reasons: assembly problems, the basic problems, the balance of the rotor assembly problems, resonance, bearing problems. (1) Assembly problems ①Inaccurate assembly, basic eccentricity: a Check the eccentricity of the coupling; b Check if there is any crack in the foundation concrete; c Check whether the pump foundation is eccentric due to uneven sinking or earthquake impact; Good concentricity during operation and eccentricity during operation: a) A retractable connection is provided at the discharge end of the pump, is there any significant movement of the coupling when the pump is running, b) there is a crack in the concrete supporting the discharge pipe, Whether there is a basic movement of the situation; d pump operation, there is a lot of water leak from the seal or air intake; e pump a parking, the shaft is eccentric (high temperature medium); ③ coupling rubber uneven or rubber parts Excellent. (2) The basic problem of pump ①Resonance caused by instability of foundation: a There is a great vibration transmission to the outside; b The basic vibration frequency is consistent with the frequency at which the pump reaches the rated speed; c The vibration propagated in the adjacent pump operation; ② Resonance caused by non-solid foundations: There is no cementing grout in the foundation; ③ Loose anchor bolts or anchor bolts do not work. (3) Unbalanced rotor shaft (1) Bending of shaft system (2) Unbalance weight of rotor remaining: (a) Partial replacement of rotor parts (impeller, etc.) without overall balancing; b) Wear of rotor part; Caused by the imbalance; ④ impeller clogged foreign body caused by imbalance: a sudden increase in pump vibration, noise from the pump internal; b discharge pressure decreases, flow reduction; c ammeter, power meter pointer abnormal swing; ⑤ due to Bearing wear caused by eccentric shaft movement (sliding bearings). (4) Resonance ①Resonance between natural frequency and speed of pump fixed part (case, base); ② Speed ​​approaching the critical speed of the rotor. (5) poor bearing (mostly occurs in the rolling bearing) ①bearing lubricant, grease changes; ② running higher than the original level of heat; ③ oil or grease into the impurities. (6) Others ①The vibration of the prime mover is transmitted to the pump; ② The sliding part of the pump bearing has partial contact; ③ The gap between the lining ring and the sliding part of the impeller is uneven. 2. Vibration when the frequency and the integral multiple of the rotation speed are the same. (1) Vibration of pressure pulse ①The clearance between the throat of the pump body and the outer diameter of the impeller is relatively small. ② The relative positions of the blade and the throat of the impeller at all levels of the multi- All the same. (2) Rolling bearing damage 3. Other regular vibration (1) Shaft torsional vibration (especially the long-axis pump) (2) thrust bearing without thrust ①horizontal double suction pump common; ② generally have noise, and the noise ratio Vibration is more intense; ③ low-speed operation issued a slight choking a regular voice; ④ bearing structure without pre-load structure; ⑤ thrust bearing clearance. (3) Resonance when the vibration caused by Karman vortex coincides with the natural frequency of the pipe. (1) There is water flow around the suction pipe of the pump. (2) The suction pipe of the pump is relatively long. (3) The position of the suction pipe is irrational. (4) Pulsed noise and vibration (1) There is a regular noise like a slap in the surge. (2) The gauge on the discharge port moves greatly. (3) The curve of the pump has a hump. If there is air in the discharge pipe This happens frequently. 4. Irregular vibration (1) Vibration caused by partial flow operation (1) Measure the pressure on the suction side and the discharge side, and calculate the operation flow rate on the basis of the measured pressure value. If it is lower than half of the specified flow rate, considerable vibration will occur. Large-scale high-speed pump prone to this phenomenon; ② double suction pump in the provisions of flow below half of the operation, the shaft will produce intense axial reciprocating motion, resulting in increased amplitude bearings. (2) Vibration caused by cavitation ①Measure the pressure on the suction side and the discharge side, and then calculate the operation flow rate to analyze whether cavitation has occurred. ② Check whether the vacuum level on the suction side increases abnormally. ③ Generally, there will be a Noise; ④ close the outlet valve, the noise decreases sharply; ⑤ outlet pressure gauge violent swing. (3) Vibration of the outlet valve Check the degree of opening of the outlet valve and vibrate when the opening degree is 50% or less and transmit it to the pump through the pipeline. (4) non-drive parts of the pump and the transmission part of the contact or sliding part of the damage ①ammeter pointer violent swing; ② accompanied by more metal sounds; ③ bearings are usually hot; ④ high-temperature liquid pump easy to start when starting this phenomenon. (5) Causes of vibrating pump noise due to over-body pressure of stuffing box 1. Noise caused by cavitation 2. Noise caused by pressure pulse 3. Water flowing sound 4. With the vibration, Body parts, foundation, pipes, ancillary equipment, etc. issued by the noise.