How to align the center distance of water pump coupling bolts?

Water pump couplings are basically classified into these categories. Pumps are one of the most commonly used chemical machines. Medium and small pumps generally use elastic couplings.High-power axial-flow pumps and water-turbine pumps often use synchronous motors as prime movers and use flange couplings for transmission. High-power pumps with higher speeds often use gear couplings.When the medium conveyed in the centrifugal pump is a suspension of small particles, belt transmission is generally used, such as the PH type ash pump and PS type sand pump using belt transmission.High-speed centrifugal pumps have been widely used in chemical plants this year. When the pump speed is greater than XNUMX, Thomas couplings are generally used. For high-power high-speed centrifugal pumps, gear couplings should be used. Over the dynamic balance test.Coupling bolts have many specifications. According to the force mode of the connection, they are divided into ordinary ones and those with reamed holes.According to the shape of the head: there are hexagonal head, round head, square head, countersunk head and so on.The hexagonal head is commonly used.The countersunk head is generally used where connection is required.The application is especially common.

The water pump coupling is easy to maintain and has a long service life. The nylon pin can be replaced by removing the baffle plate. The nylon pin is a self-lubricating material and does not need lubrication. It not only saves lubricating oil, but also purifies the working environment.The transmission torque is large. At the same torque, the rotation diameter is mostly smaller than the gear coupling, the volume is small, and the weight is lighter. It can partially replace the gear coupling. Compared with the gear coupling, the structure is simple and the composition is There are fewer parts and it is more convenient to manufacture, without gear processing machine tools.In fact, compressors, fans, and pumps, as basic fluid conveying machinery, are commonly used in various types of production, and as couplings that connect these types of equipment with motors, they play a particularly critical role in operation.

How to align the center distance of water pump coupling bolts?

(1) After the rotor rotates, the two couplings should not be lame, the markings should be aligned, take care not to rub the rotor with other parts, and do not touch the dial indicator tool during operation.

(2) After adjusting the center distance, apply the aforementioned method to check, if the center is unqualified, adjust it again.Then the qualified center is rechecking twice, and the values ​​measured in the two times should have little error.

(3) The right-angle bracket should be firm, the dial indicator should be correct and flexible, and the surface of the measuring point should be smooth.At the same time pay attention to the indicated value of the pointer.

(4) When centering, the motor should be adjusted based on the pump coupling.

(5) Before finding the center, install the pump so that the center deviation of the two couplings should be as small as possible, and the motor anchor bolts should be tightened first.At the same time, continuously rotate the rotor several times to compress the bearing.

The structure of the three-jaw coupling for pumps is to place the type quincunx hex pump counter-wheel pad between the half couplings with three claws, which is roughly similar to the office principle of the quincunx coupling. Implement a pressure-increasing variant to transmit torque.This kind of coupling is suitable for small-scale pumps.The claw-type elastic coupling is also called the elastic block coupling. It is characterized by small size, light weight, simple structure and convenient installation. It is often used in small power and unimportant occasions.

There are three types of water pump couplings: claw-type elastic coupling, elastic pin coupling and diaphragm coupling.Accurate centering requirements for installation, shock mitigation, changing the natural vibration frequency of the shafting, and avoiding hazardous vibrations, etc.In addition, the elastic pin coupling is connected with the flange of the two halves of the coupling by a pin, and one end of the pin is conical surface and a nut with a tapered pin hole on the flange of the half coupling. A fixed fit is formed, and the other end is provided with an elastic sleeve, which is installed in the pin hole of the flange of the other half of the coupling, and the elastic sleeve is made of rubber.It can be seen that the water pump coupling is a product commonly used in many coupling products, and it occupies a large proportion and share in the entire coupling market. The water pump coupling product can choose a variety of coupling products. There is no standard answer as to what kind of product the pump uses. Users often have a variety of coupling products to choose from when choosing. We will now introduce you how to choose a pump coupling product.The metal laminated flexible couplings currently produced in our country, also known as diaphragm couplings, use a set of thin metal springs to make various shapes, and use bolts to connect the main and driven shafts respectively. The coupling halves are connected.