SY type fiberglass submersible centrifugal pump

■ Overview of SY type fiberglass submersible centrifugal pump:

SY type, WSY type, FSY type fiberglass submersible produced by Wenzhou Zhongnai Pump Valvecentrifugal pumpFiberglass reinforced plastic (phenolic resin) has good corrosion resistance to non oxidizing acids (hydrochloric acid, dilute sulfuric acid, phosphoric acid, etc.), salt solutions, and water, but is not resistant to alkali and oxidizing acids (nitric acid, chromic acid, etc.). Its maximum temperature resistance is about 120-150 ℃, and its minimum temperature resistance is -20 ℃. Our unit produces SY type vertical fiberglass reinforced plastic using this materialsubmerged pump、 WSY type pump is a vertical fiberglass submersible pumpvortex pump、 FSY type pump is a vertical fiberglass submersible pumpcentrifugal pumpThischemical pumpDue to the different depths of the storage tank, the designed underwater depth can be freely selected between 500mm-3000mm. As long as the liquid is higher than the pump body, the liquid delivery can be started without filling. There is a leakage hole under the flat cover plate, and the liquid will not leak outside the storage tank. thatchemical pumpThe components in contact with the medium are made of polyvinyl butyral modified phenolic glass fiber, which is molded into phenolic glass steel parts through high temperature compression molding. The connecting pipe and outlet pipe are made of phenolic glass steel pipes using semi dry rolling technology. The assembly of the impeller shaft sleeve is bonded to the pump shaft with phenolic adhesive, and all parts of the underwater assembly are bonded with phenolic adhesive. There is no metal contact with the medium when it enters the liquid, and the corrosion resistance is reliable. The product has excellent properties such as light weight, high strength, no deformation, temperature resistance, and corrosion resistance. In terms of corrosion resistance, it can partially replace precious metals such as molybdenum stainless steel, titanium, and titanium alloys. Pump in transmission and rotation direction: The pump is directly driven by an electric motor through a claw type elastic coupling, and the pump rotates clockwise when viewed from the motor end.

■ SY typeFiberglass submersible centrifugal pumpModel meaning:

■ Characteristics of SY type fiberglass submersible centrifugal pump:

1. Vertical structure, with the pump body and impeller partially submerged in liquid, occupying a small area;
2. The shaft seal has no leakage phenomenon;
3. The pump body is submerged in liquid and does not require water intake before starting.

■ Selection criteria for fiberglass submersible centrifugal pump:

Ordinary engineering materials such as steel, stainless steel, aluminum, and lead are not suitable due to severe corrosion in hydrochloric acid. Most plastics have excellent corrosion resistance to hydrochloric acid. A type of plastic that can withstand hydrochloric acid at all concentrations and boiling points, such as phenolic, furan, polytetrafluoroethylene, polytetrafluoroethylene, polyvinylidene fluoride, etc. Phenolic resin (fiberglass) products have good corrosion resistance to non oxidizing acids (hydrochloric acid, dilute sulfuric acid, phosphoric acid, etc.), salt solutions, and water, but are not resistant to corrosion from alkali and oxidizing acids (nitric acid, chromic acid, etc.).

■ Main uses of fiberglass submersible centrifugal pump:

thatchemical pumpWidely used in industries such as chemical, petrochemical, smelting, dyes, pesticides, pharmaceuticals, rare earths, fertilizers, etc., it is an equipment for transporting various non oxidizing acids (hydrochloric acid, dilute sulfuric acid, formic acid, acetic acid, butyric acid) and other corrosive media that do not contain suspended solid particles, are not easy to crystallize, and have a temperature not exceeding 100 ℃ on storage tanks.

■ Performance parameters of fiberglass submersible centrifugal pump:

■ Precautions for use:

Disassembly and assembly

1. If replacing or inspecting the impeller, it can be closedvalveRemove the flange connection bolts and bottom plate connection bolts, and use lifting tools to lift the pump out of the container.
2. Place the bottom plate vertically on the fixed bracket, remove all bolts from the pump body, take out the pump cover and impeller nut, and lightly tap the pump body with a double hammer to remove the impeller.
3. If the flow bearing is replaced, the bottom plate will not move. Just remove the motor and corresponding bracket, remove the pump coupling, cover, round nut, and take out the shaft sleeve body.
4. The order of assembly and disassembly is opposite, pay attention to the concentricity of the accessories on the shaft.

Installation, use, and maintenance

1. After assembling the pump, rotate the coupling to see if it rotates flexibly. Check if there is any metal friction sound and if the nuts of each component are tightened.
2. Check the concentricity between the pump shaft and the motor shaft. The difference between the outer circles of the upper and lower couplings should not exceed 0.1mm, and the gap between the coupling end faces should be maintained at 1-2.5mm.
3. The distance between the suction port of the pump and the bottom of the container is 2-3 times the suction diameter. The distance between the pump body and the wall should be greater than 2.5 times the diameter.
4. The outlet pipeline of the pump should be supported by a separate bracket, and its weight is not allowed to be supported on the pump.
5. Check the rotation direction of the motor to ensure that the pump rotates in the indicated direction.
6. Close the gate valve on the outlet pipeline and connect the cooling water pipe.
7. Super motor, slowly open the outlet pipegate valveGo to the required location and put it into normal operation.
8. Regularly check the condition of the pump and motor. The temperature rise of the bearings should not exceed 75 ℃, and sufficient butter should be added to the bearing box.