What are the causes of pump vibration
1. The manufacturing process of the water pump is not up to standard: the rotor is unbalanced; The pump and motor shafts are not concentric; Collision or friction between rotor and stator;
2. Due to long service time, the water pump is worn and aged: the impeller is loose; Bearing damage or large bearing clearance;
3. There are sundries in the water pump inlet pipe, impeller and pump; The water pump is not fixed firmly with the foundation, and resonance strengthening phenomenon occurs;
4. When the water pump is working to promote the water flow, the accompanying vortex and cavitation will inevitably produce vibration;
How to improve pump vibration and control noise transmission
1. The feed pump can be equipped with butterfly valve and electric butterfly valve:
① Selection of pump butterfly valve vibration isolator (pump butterfly valve electric butterfly valve) style: generally, self standing butterfly valve electric butterfly valve is selected, which has the advantages of simple structure and low cost; The butterfly valve is exposed, which is convenient for observing the status of the butterfly valve at any time. The butterfly valve that needs to be replaced should be disposed in advance to avoid sudden sedimentation of the pump, equipment damage and pipeline breakage when the butterfly valve is excessively corroded and damaged.
② Selection of butterfly valve: the butterfly valve selected by Haihua Electric Butterfly Valve, a general electric butterfly valve manufacturer, shall meet the following requirements: the diameter of the butterfly valve shall not be less than 0.8 times of its height under rated load; The butterfly valve must have a certain additional stroke, at least equal to 50% of the rated static deflection; The horizontal stiffness of the butterfly valve shall be at least 100% of the rigidity to ensure the stability of the electric butterfly valve.
③ Selection of deflection of electric butterfly valve; Generally, the rated deflection (rated compression of the butterfly valve) of the electric butterfly valve of the arch proposed by the electric butterfly valve manufacturer Botou Haihua Electric Butterfly Valve is generally 25MM (natural frequency value is about 3-4HZ), which can be equivalent to the vibration isolation of the pump at 650 rpm. When the speed is lower than 650, it is recommended to use butterfly valve vibration isolator with deflection below 40.
2. Install (electric butterfly valve of water pump) vibration isolator:
Selection of electric butterfly valve vibration isolator: the material is generally neoprene (C.R), natural rubber (N.R); Generally, compression type electric butterfly valve is selected, and shear type electric butterfly valve can be selected for light water pump; Compared with the electric butterfly valve of butterfly valve, the vibration isolation performance of electric butterfly valve is relatively poor.
3. Installation of water pump flexible base (water pump electric butterfly valve pedestal):
In order to meet the more rigorous vibration standard, when adding flexible base, it is undoubtedly the best choice to use damping butterfly valve, electric butterfly valve and butterfly valve vibration isolator.
Specification of flexible base: the base weight is more than 1-2 times of the pump weight; The frame is fixed by trough iron, and its height is not less than 1/12 of the length, but not less than 150mm, and not more than 300mm; The length and width shall be able to cover the whole pump, and 10-15cm should be left on each side. And it is better to include Wantou; Cement shall be poured inside, and a layer of reinforcement mesh shall be built at one third of the height; Install a butterfly valve vibration isolator to keep the distance between the base and the foundation to 3-5 cm.
Dongfeng Electric Butterfly Valve Manufacturing Co., Ltd., located in Baoshan Industrial Development Zone, Shanghai, is a company specializing in the design and manufacture of anti vibration equipment, valves, filters and other products for industrial machinery, which is well received by customers.
The company makes full use of years of design and production experience to optimize the combination of products and strive for complete variety and stable quality. The enterprise has perfect testing capability independently. "Dongfeng" has strong productivity and industrial competitiveness. The factory has electric butterfly valve manufacturing department, valve product manufacturing department and filter product manufacturing department. Vibration reduction products include butterfly valve electric butterfly valve, water pump electric butterfly valve, electric butterfly valve, fan electric butterfly valve, air conditioner electric butterfly valve, damping butterfly valve electric butterfly valve, etc., which are commonly used for foundation vibration reduction of water pump, fan, water chiller, diesel engine and other equipment, as well as vibration reduction of various fan coil units, fresh air units, air ducts, etc
。 "Innovative Technology Power" takes the development of industrial technology as the driving force of enterprise development, gives full play to years of design and production experience, insists on continuous development, innovation, optimization and perfection of products, and strives for excellent product performance, stable quality, environmental protection and efficiency, complete varieties, and reasonable price. The company adheres to the spirit of "dedication, pragmatism and innovation", and takes quality first and customer first as the service philosophy. Honesty oriented, win with excellence! Botou Haihua electric butterfly valve sincerely looks forward to working with you to create prosperity! Our company has made great efforts to improve the enterprise environment and reform the employment mechanism, gradually forming a good atmosphere of "loving the enterprise, taking root in the enterprise, building the enterprise and developing the enterprise", and forming a strong cohesive force and combat effectiveness of the enterprise. In addition: support customized special-shaped dimensions. Wholesale of various electric butterfly valve manufacturers, sales hotline: 13331970566