Precautions for the use of centrifugal chemical pumps

Single Impeller Centrifugal Pumps

Centrifugal chemical Single Impeller Centrifugal Pumps are widely used products in the chemical industry. There are several types of centrifugal chemical pumps. They are divided into polypropylene, fluoroplastics, and stainless steel according to their materials. According to the structure of the pump body, they are divided into direct connection and joint There are several types of shaft type, vertical type and horizontal type. According to actual needs, you can refer to the selection of suitable products.

Precautions for the use of centrifugal chemical pumps: (1) When installing a chemical centrifugal pump, the weight of the pipeline cannot be added to the pump. There should be their own support body, so as not to cause deformation to affect the operating performance and life. (2) The stainless steel chemical pipeline pump and the motor have an integral structure, and there is no need to align it during installation, so installation is very convenient. (3)

The anchor bolts must be tightened during installation to avoid the impact of vibration on the performance of the centrifugal chemical pump during starting. (4) Before installing the centrifugal chemical pump, check carefully whether there are hard objects (such as rocks, iron particles, etc.) in the pump flow path that affect the operation of the pump, so as to avoid damage to the impeller and pump body during the operation of the centrifugal chemical pump. (5)

For the convenience of maintenance and safe use, install a regulating valve on the inlet and outlet pipes of the centrifugal chemical pump and a pressure gauge near the outlet of the pump to ensure operation within the rated head and flow range to ensure the normal operation of the pump , Increase the service life of chemical pumps. (6) When the pump is used for suction, it should be equipped with a bottom valve, unless it is a self-priming pump, it is not necessary to install a bottom valve, and the inlet pipeline should not have too many bends, and there should be no water or air leakage. (7)

It will be affected by the pressure and the corrosion of the conveying

Pressure Controller For Borehole Pumps

For this reason, pay Pressure Controller For Borehole Pumps to the following Maintenance workers. 1. Seals and pump seals are divided into static part seals and moving part seals. The seal ring of the static part seal should be careful not to have scratches or bumps on the surface, otherwise, it will directly affect the sealing effect; for the moving part seal, because

It will be affected by the pressure and the corrosion of the conveying medium, as well as the abrasion of particles in the medium. If you are not careful, leakage is likely to occur. Once the product leaks, it should be shut down for maintenance in time, wiped with a soft and clean cotton cloth, and coated with a layer of glycerin. After assembling, use it by hand before turning it on. If there is no hope of repairing, replace with a new one. 2. Lubricating parts,

the transmission gears and rolling bearings of this pump must maintain good lubrication conditions. In normal times, always pay attention to the oil level in the gear, give enough lubricating oil, and ensure that the oil is pure, clean, and replace the new oil regularly (six months or a year). 3. In the electrical system, it is not allowed to store equipment, substances or gases that damage the insulation around the electrical equipment.

At the same time, electrical equipment must be kept working in a dry environment. If it is unavoidable, moisture-proof facilities should be added. 4. Routine maintenance. When the machine is stopped and not working, the corresponding cleaning agent will be selected according to the nature of the conveyed material to effectively clean the pump. It must be cleaned with clean water again to ensure the cleanliness of the pump.

The coupling can be divided into four categories: rigid coupling

Garden JET Pumps

shaft coupling is Garden JET Pumps used to connect two shafts (active shaft and driven shaft) in different mechanisms so that they can rotate together to transmit torque. In high-speed and heavy-load power transmission, some couplings also have the function of buffering, damping and improving the dynamic performance of the shafting. The coupling is composed of two halves, which are respectively connected with the driving shaft and the driven shaft.

The general power machine is mostly connected with the working machine by means of a coupling. The coupling can be divided into four categories: rigid coupling, flexible coupling, elastic coupling and safety coupling. There can be several varieties in each category. For example: 1 Elastic couplings include plum couplings, star couplings and other products. 2 Rigid couplings include cross block couplings, serpentine couplings and other products. 3 flexible couplings include diaphragm couplings,

KL couplings and other products. 4 There are many types of full couplings. Such as shear pin type, steel sand type, friction type, magnetic powder type and other couplings. Because the safety coupling can automatically cut off the connection of the shaft when it is running, some safety couplings have the same function as the safety clutch. Rigid coupling can only be used to connect two strictly coaxial shafts.

The flexible coupling, due to the special design of the structure, has many functions. Such as: 1. Compensate the axial displacement, radial displacement and angular displacement of the two connected shafts caused by manufacturing and installation errors, and avoid excessive additional load (turtle strength) at the shaft end. 2. Alleviate the torsional impact on the shaft when the reducer is working. 3. Change the resonant speed of the shaft system, for example, when the shock absorption work is the same. The larger the torsion angle based on the torque (that is, the smaller the stiffness), the smaller the impact torque.

The fluid energy at the suction port of the pump

Garden JET Water Pumps

One. The reasons for the Garden JET Water Pumps of the centrifugal pump: 1. The suction pipe of the pump has liquid friction resistance (including local resistance), so that the energy of the liquid at the suction port of the pump is always lower than the pressure on the suction liquid surface of the pump. 2. The fluid energy at the suction port of the pump is lower than the water vapor pressure at the temperature of the liquid sucked by the pump, and the pump sucks the liquid and gas together.

At this time, cavitation occurs, causing the pump to vibrate and sound. In severe cases, the pump stops working. two. To make the pump work normally, the fluid energy at the suction inlet of the pump must not only be lower than the water vapor pressure at the temperature of the pump suction liquid, but also exceed the cavitation margin of a specified small value of the vaporization pressure.

Equipment maintenance 1. Start, run and stop in strict accordance with the operating rules and procedures, and keep operating records. 2. Check the lubrication condition of each lubrication part every shift. 3. After the new bearing is changed, the oil should be cleaned and changed after 100 hours of operation; the oil shall be changed every 1000-1500 hours after operation, and the grease shall be changed every 2000-2400 hours. 4.

Check the bearing temperature frequently, and it should not be higher than the ambient temperature of 35℃; the temperature of the bearing: the rolling bearing should not exceed 75℃, and the sliding bearing should not exceed 65℃. 5. Frequently observe whether the pump pressure and motor current are normal and stable, and whether there is any abnormal sound or vibration in the operation of the equipment, and deal with any problems in time. 6. Keep the surrounding environment of the pump clean and tidy, and eliminate running, leaking, dripping and leakage in time.

Check whether the specifications and performance of the equipment

Garden JET Pumps

The Garden JET Pumps between the jaw and the outlet flange of the water pump should be tightened according to the torque specified by the manufacturer, and the connection must be firm. Inspection method: check with a spirit level.锘?016-01-15 Installation and commissioning plan of submersible pump 1. Inspection method: lightly hit with a small hammer and observe and check 4.1. 4. 2. Jog check whether the running direction of the water pump is correct,

whether it is consistent with the direction marked on the pump body, and it can be operated with load only after it is correct. Water pump installation 4. 1. Check whether the specifications and performance of the equipment meet the requirements of the drawings, and whether the instructions, certificates and test reports are complete. Inspection method: observe and inspect during hoisting. The insulation resistance of the cable shall not be less than 5;. 4.7.2.

The pump should run smoothly without abnormal sound. Inspection method: check with feeler gauge during installation, and make a record, and check the record during acceptance.4. 4. Water should not penetrate into the motor, and the humidity monitoring device should not operate.3. B. F. 4. Inspection method: disassemble and pull up the water pump, then put it down and install it.

The allowable deviation between the center of the outlet of the water pump and the center of the lower flange of the elbow shall not exceed 5mm. Inspection method: observe and inspect. 4. 3. E.1.5. Check the installation quality records, all technical indicators should be complete and meet the requirements. The number of pieces in each group should not exceed 3 pieces.3