How to solve the problems that will be encountered in the long-term operation of fire pumps and diaphragm pumps

In the long-term operation of fire pumps, there are often problems, large and small, and we need to understand how it can be maintained: 

  The above-mentioned problems, the common solution for businesses is to repair in welding or brushing machine, but they all have some disadvantages: the high temperature welding repair of thermal stress can not be completely eliminated, easy to cause material damage, resulting in bending or fracture composition; and brushing coating thickness limit, easy to peel, the above two methods are used to repair metal metal, can not change the "hard on hard "Coordination relationship, under the action of forces, will cause wear out. Modern western countries have more than polymer composite materials used in the repair of problems, with superb adhesion, high compressive strength of the overall performance.

  Polymer materials in the repair of the application, can be exempted from the removal of processing, are no complementary welding heat impact and repair thickness is not limited, the product licensed metal materials, can absorb the impact of the fire pump, to avoid re-wear, extend the service life of equipment and large parts, for the enterprise to save a lot of downtime, to obtain a huge economic value.

  Fire pump we all know, then in order to make your operation easier when the following detailed knowledge of the polishing method of equipment, fire pump manufacturers recommend that you better master these.

  1, polishing powder polishing: this way is high-speed friction on the surface of the fire pump to remove scratches, before polishing to the abrasive belt grinding polishing part, which uses a large amount of material, the best effect is cerium oxide, but the process is slow.

  2, flame, flame polishing surface on the fire pump softening baking, thermal shock, can remove some surface slant, wrinkle skin, many cutting mouth will furnace mouth flame polishing, but this treatment will reduce the degree of fire pump surface smoothness.

  3, acid acid corrosion polishing of the fire pump surface treatment of the surface effect, also need in polishing abrasive belt grinding fire pump, because acid polishing will reduce the thickness of many equipment itself, may not be able to remove all the lines of the surface.


DBY type electric diaphragm pump diaphragm description.

  1, cast iron, aluminum alloy pump original with diaphragm, ball, ball seat for nitrile rubber, neoprene. Stainless steel pumps with PTFE diaphragms, PTFE balls, PTFE ball seats.

  2、The use of diaphragm material.

  ●Neoprene material: resistant to various acidic and alkaline liquids.

  NBR material: resistant to petrol, oil and moderately weak corrosive liquids.

  Polytetrafluoroethylene and tetrahexaethylene: resistant to strong acids, strong alkalis and various organic solvents.

  ●Fluoroelastomer material: resistant to various organic solutions such as acid and alkali, toluene, etc.

  3、If you need electromagnetic speed control motor or special materials and requirements with fluorine rubber and F46 diaphragm, it will be charged separately.

  4、Note that the pump uses different diaphragms, balls, ball seats, etc. for the medium.

  DBY type electric diaphragm pump product features.

  1, DBY type electric diaphragm pump through good performance, the diameter of the particles below 10 mm, mud, etc. can be passed effortlessly.

  2, DBY type electric diaphragm pump does not need to fill the water, self-priming capacity of more than 7 meters.

  3, DBY type electric diaphragm pump pump body media overflow part, according to different user requirements, can be divided into cast iron, stainless steel, rubber lining, aluminum alloy, motor can be divided into ordinary motor, explosion-proof motor, reducer motor and electromagnetic speed control motor.

  4, DBY type electric diaphragm pump because the diaphragm will be transported media and transmission mechanical parts separate, so the media will never leak out; and the pump itself without shaft seal, service life greatly extended; according to different media, the diaphragm can be divided into neoprene, fluorine rubber, nitrile rubber, polytetrafluoroethylene, Teflon (F46), etc., can meet the requirements of different customers.

   DBY type electric diaphragm pump precautions.

  1. should be timely refueling, to maintain the normal operation of the lubrication system.

  2. Diaphragm pump outlet is strictly prohibited to install valves, such as the need to install valves; to install a safety valve at the outlet, the working pressure should not exceed 4 kg, so as not to cause losses.

  3. The medium being conveyed and its temperature should be within the allowable range of the pump material.

  4. The ambient temperature of the pump in use should be less than 40℃ and the motor temperature should not exceed 75℃.

  5. For the conveyed liquid is easy to precipitate crystalline media, the pump should be cleaned and drained in time after use to avoid damage when reopening.