Corrosion-resistant pumps are pumps with corrosion resistance and are primarily used for the transport of corrosive liquids. It is a widely used pump in general-purpose equipment pumps. At present, the domestic direct market corrosive liquid transportation uses zui as a corrosion-resistant pump made of fluoroplastics. The corrosion-resistant pump made of its material has the advantages of wide corrosion resistance range, low product cost and convenient maintenance.
The working principle can be divided into the following categories:
1. The displacement of the positive displacement pump by the working part causes the working volume to periodically increase and decrease to suck and discharge the liquid, and directly presses the working part to increase the pressure energy of the liquid .
According to the different movement modes of moving parts, it is divided into two types: reciprocating pump and rotary pump.
According to the structure of moving parts, it is divided into: piston pump, plunger pump, gear pump, screw pump, vane pump and water ring pump.
2. Impeller pump The impeller pump relies on the impeller to drive the liquid at high speed to transfer the mechanical energy to the delivered liquid.
According to the pump impeller and runner structure characteristics can be divided into: 1) centrifugal pump 2) axial flow pump 3) mixed flow pump 4) vortex pump.
3. The jet pump illuminates the fluid by a high-speed jet generated by the working fluid, and then increases the energy of the injected fluid by momentum exchange.
　 The pump shaft position can be divided into the following categories: 1) Vertical pump 2) Horizontal pump is divided into:
1) Single suction pump 2) Double suction pump
According to the prime mover that drives the pump:
1) Electric pump 2) Turbine pump 3) Diesel pump use:
Corrosion-resistant pumps are widely used in chemical, acid, alkali, smelting, rare earth, pesticide, dye, pharmaceutical, paper, electroplating, electrolysis, pickling, radio, chemical foil, scientific research institutions, defense industry and other industries to transport any concentration of acidity , alkaline, oil, rare and precious liquids, toxic liquids, volatile corrosive chemical media. Fluorine plastic manufacturing corrosion-resistant pumps mainly include DKZB self-priming pump, DBY diaphragm pump, IHF lining fluorine plastic centrifugal pump, CQB fluoroplastic magnetic pump, FZB fluoroplastic alloy self-priming pump, ZMD fluoroplastic alloy magnetic self-priming pump, FSB fluoroplastic Alloy centrifugal pump, IGF type lining fluorine pipeline pump, etc.
CQB fluoroplastic magnetic pump, IMC fluoroplastic magnetic drive pump, ZMD fluoroplastic magnetic self-priming pump, IHF steel lining fluorine plastic centrifugal pump, FSB (D) fluoroplastic centrifugal pump, FZB fluoroplastic self-priming pump, UHB type Corrosion-resistant and wear-resistant mortar pump, FYH type fluoroplastic submerged pump
The materials are mainly the following,
Polytetrafluoroethylene (PTFE, referred to as F4)
Polyperfluoroethylene propylene (FEP, F46 for short)
Fusible polytetrafluoroethylene (PFA)
Ultra high molecular weight polyethylene (PE)
The main materials are lining the fluoroplastic:
Polyperfluoroethylene propylene (FEP, F46 for short)
Fusible polytetrafluoroethylene (PFA)
IHF fluorinated centrifugal pump----- is a new generation of corrosion-resistant centrifugal pump based on IH pump. It is suitable for long-term transportation of various acid oxidants and other corrosives under the conditions of -20 °C ~ 200 °C. The medium and the pump body are made of metal shell lining fluoroplastic (F46), which is enough to bear the weight of the pipeline and resist mechanical impact. The impeller and the pump cover are all formed by metal inserts and fluoroplastic alloy, and the shaft seal is advanced. The bellows is mechanically sealed, the static ring is made of 99.9% alumina ceramic, and the moving ring is made of PTFE filling material, which is characterized by good corrosion resistance and wear resistance. With a rear pull-up structure, one person can easily perform internal routine maintenance and parts replacement without disassembling the pump inlet and outlet pipes.
The CQB magnetic pump uses a modern magnetic mechanics principle to realize a chemical process pump using a permanent magnet for contactless indirect transmission. When the motor drives the outer rotor (ie, the outer magnetic steel) assembly to rotate, the magnetic field lines pass through the isolating sleeve to drive the inner rotor (ie, the inner magnetic steel) assembly and the impeller to rotate synchronously, and the medium is completely enclosed in the stationary isolation sleeve. In order to achieve the purpose of leak-free pumping medium, the shaft seal leakage of the mechanical transmission pump is completely solved, and it is a new industrial pump with full sealing, no leakage and no pollution.
Plastic pump maintenance and maintenance
1. Check the plastic pump piping and joints for looseness. Turn the engineering plastic pump by hand to see if the plastic pump is flexible.
2. Add bearing lubrication oil to the bearing body. Observe that the oil level should be at the center line of the oil mark. The lubricating oil should be replaced or replenished in time.
3. Unscrew the water plug screw of the pump body and infuse the water (or the slurry).
4. Close the gate valve and outlet pressure gauge of the outlet pipe and the imported vacuum gauge.
5. Jog the motor and try to see if the motor is turning correctly.
6. Start the motor. When the engineering plastic pump is running normally, open the outlet pressure gauge and the imported vacuum pump, and then open the gate valve and check the motor load condition.
7. Try to control the flow and head of the engineering plastic pump within the range indicated on the sign to ensure that the engineering plastic pump operates at the high efficiency point of Zui, in order to obtain the energy saving effect of Zui.
8. During the operation, the bearing temperature should not exceed the ambient temperature of 35C, and the high temperature of zui should not exceed 80C.
9. If the pump is found to have abnormal sound, stop immediately and check the cause.
10. When the pump is to be stopped, first close the gate valve and pressure gauge, then stop the motor.
11. The pump is replaced within 100 hours of working, and the oil is changed once every 100 hours.
12. Regularly adjust the pump packing gland to ensure that the drip leakage in the packing chamber is normal (it is better to make a drip leak).
13. Regularly check the wear of the plastic pump bushings, and replace them in time after the wear is large.
14. When the pump is used in the cold winter season, after parking, the water plug of the lower part of the pump body should be unscrewed to release the medium. Prevent freezing cracks.
15. If the pump is out of service for a long time, it is necessary to disassemble the pump completely, wipe off the moisture, and apply the grease to the rotating part and the joint, and keep it in a safe place.
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