Pneumatic diaphragm pump fault how to rule out

Pneumatic diaphragm pump is a new type of conveying machinery, the use of compressed air as the power source, for a variety of corrosive liquids, with particles of liquid, high viscosity, volatile, flammable, highly toxic liquid can be smoked exhausted . The main features of this pump pneumatic diaphragm pump, stainless steel pneumatic diaphragm pump, qby pneumatic diaphragm pump. Pneumatic diaphragm pumps, the use of compressed air as the power source, for a variety of corrosive liquids, with particles of liquid, high viscosity, volatile, flammable, highly toxic liquid, can be smoked exhausted. A plastic, aluminum, cast iron, stainless steel four kinds of material, is a new type of conveyor machinery.

1. Prior to removing the pneumatic diaphragm pump, mark the gas chambers and liquid chambers on the left and right sides respectively to facilitate subsequent reassembly.

2. Use a wrench to loosen the small clamp connecting the outlet tube to the liquid chamber. Remove the outlet tube to see the ball and valve seat. Remove the ball and seat and check for other wear and tear on the pump. Chemical corrosion, cracks and the like.

3. Use a wrench to separate the liquid chamber from the pump intermediate. Remove the liquid chamber to see the diaphragm and diaphragm clamp.

4. Use tools or wrenches to fix the left and right edges of the diaphragm clamp to separate the diaphragm assembly from the intermediate body. Then turn clockwise to loosen the diaphragm assembly. After removing the diaphragm from the clamp, remove the shaft from the intermediate body.

5. Use a clamp (padded wood) to separate the shaft from the diaphragm unit and check shaft, clamp, diaphragm for damage and corrosion.

6. Install from step 5 to step 1

Pneumatic diaphragm pump action, but the flow is small or no liquid out:

1. Check the cavitation of the pump to reduce the speed of the pump to allow liquid to enter the chamber.

2. Check if the valve ball is stuck. If the operating fluid is incompatible with the pump elastomer, the elastomer will swell. Please replace the appropriate material elastomer.

3. Check the pump inlet connector is completely tight leak, especially near the entrance of the valve ball to be locked.

Pump air valve frozen:

Check the compressed air moisture content is too high, the installation of air-drying equipment

Pump outlet bubble generation:

Check the diaphragm is broken, check the clamp is locked, especially the inlet pipe clamp.

The product flows out of the air vent:

Check the diaphragm is broken, check the diaphragm and the clamp inside and outside the clamp on the shaft

Valve rattles: increase export or import lift.

Pump Removal and Reassembly Guide:

WARNING: Before repairing a Pneumatic diaphragm pump, first remove the Air Supply Piping from the Pneumatic diaphragm pump and vent the air pressure in the Pneumatic diaphragm pump. Remove all tubing connecting the inlet and outlet of the pneumatic diaphragm pump and drain the fluid in the pump into a suitable container.

Wear protective cap, glasses, gloves

No action or slow pump operation:

1. Check the air inlet filter or air filter device for impurities.

2. Check if the air valve is stuck and clean the air valve with cleaning fluid.

3. Check air valve for wear and tear, replace new parts if necessary.

4. Check the center of the seal parts condition, if severely worn, you can not achieve the sealing effect, and the air will be discharged from the air outlet. Due to its special construction, use only GLYD circles.

5. Check the air valve piston activity is normal.

6. Check the type of lubricant. If the added lubricant is above the recommended viscosity, the piston may get stuck or malfunction. Recommend the use of thin and antifreeze lubricants.

Starch Glue For Paper Core

The special starch glue for paper core is a starch adhesive made by oxidation of corn starch. It is nontoxic, tasteless, formaldehyde free, easy to operate and convenient to transport.

starch glue for paper core


Product features:

1. High adhesive strength, low adhesive consumption, fast drying, no delamination.

2. Use our glue to make paper tube with good hardness, no brittleness, no bubble, no

crack.

3. The viscosity is stable and has good flexibility, water and moisture resist ance.

4. The ratio of powder and water is 1:2-1:3, and the cost is only 50% of the white emulsion.

Scope of application:


1. Suitable for spiral paper tube mechanical equipment.

2. It can be used for adhesive production of paper barrel, paper corner protector and

paper core.


Materials :glue powder,caustic soda,Borax

1.add 25kg water(normal tempreture) into the blender,

2.Then add the glue powder(25kg),and stirring it for 5 minutes to dissolve fully.

3.Take another container,add 10kg of water,will be caustic soda, borax pour into the water,stir well,dissolve fully.

4.The caustic soda and borax solution put into the glue powder solution slowly,stirring evenly,dissolve fully,the can be used after wait 15 minutes.


Storage considerations:

1.Storage a few days later will be a normal phenomenon of precipitation,you just need stir it again.

2.In the process of storage need to cover seal,because the colloid moisture will volatilize,sometimes the glue powder solution will become solid or Like jelly,at this time ,you can ease with a small amount of water of 0.5-1 kg of caustic soda.



Starch Glue For Paper Core,Paper Core Adhesive,Corn Starch Glue For Paper Core,Fast Dry Glue

Zhengzhou Enlin Import And Export Trade Co., Ltd , https://www.enlintrade.com