Diesel motor pumps: features and types

Diesel motor pumps are special units that are used to automatically pump various liquids and transport them over long distances. The devices are used in various fields - in agriculture, in public utilities, during extinguishing fires or in the elimination of accidents in which large volumes of liquid are released.

Motor pumps, regardless of the manufacturing plant, are divided into several types by technical characteristics and design features. For each type of work, certain types and models of units are provided.

The main working structure of all motor pumps is the same - a centrifugal pump and a diesel internal combustion engine. The principle of operation of the unit is that special blades are fixed on the shaft rotating from the engine, located at a certain angle - opposite to the movement of the shaft. Due to this arrangement of the blades, when rotating, they capture the liquid substance and feed it through the suction pipe into the transfer hose. The liquid is then transported along the transfer or ejection hose in the desired direction.

Due to the resulting internal high pressure, suction and further pumping of liquid substances is ensured. Despite their small size and simple design, diesel motor pumps have high power, long-term trouble-free operation and good performance. Therefore, they are very popular in various fields, the main thing is to choose the right device.

There are several types of diesel motor pumps, which are classified according to their intended purpose. Each type has distinctive characteristics and technical capabilities, they must be taken into account when choosing products. Since if the unit is used for other purposes, it will not only be unable to ensure the proper quality of work, but will also quickly fail. Device types.

1. Diesel motor pumps for clean water. They work on the basis of two-stroke internal combustion engines. They have low power and productivity, on average they are designed to pump out liquid with a volume of 6 to 8 m3 per hour. They are capable of passing particles with a diameter of no more than 5 mm contained in a liquid. They are small in size and emit a minimum noise level during operation. Perfect for agriculture or private use when watering vegetable gardens, garden plots.
2. Diesel motor pumps for medium pollution water are also called high-pressure pumps. They are used by fire services, in agriculture for irrigation of large fields and in other areas of activity where water supply is required over long distances. Equipped with four-stroke engines capable of pumping out up to 60 cubic meters per hour. Head power - 30-60m. The permissible size of foreign particles contained in the liquid is up to 15 mm in diameter.
3. Diesel motor pumps for heavily contaminated water, viscous substances. Such motor pumps are used not only for pumping out especially dirty water, but also for thicker substances, for example, sewage from a burst sewer. They can also be used for various liquids with a high content of debris: sand, gravel, crushed stone. The size of foreign particles can be up to 25-30 mm in diameter. The design of the mechanism provides for the presence of special filter elements and free access to the places of their installation, quick cleaning and replacement. Therefore, even if some particles are larger than the permissible values, they can be removed without allowing the unit to break down. The productivity of the devices allows pumping liquid with a volume of up to 130 cubic meters per hour, but at the same time, a correspondingly higher consumption of diesel fuel occurs.

Their fundamental difference from other types of similar devices is in special structural elements of the overflow mechanism. Membranes, diaphragms, passages, nozzles, blades are made of special materials that have increased resistance to corrosion from harmful acids contained in liquids. They have high productivity, capable of distilling thick and viscous substances, liquids with especially coarse and solid inclusions.

There is a wide range of diesel motorized pumps on the market today from various manufacturing plants. The most popular and demanded models of units, tested and recommended by professionals.

• "Tanker 049". The manufacturing plant is located in Russia. The unit is designed for pumping various dark and light oil products, fuels and lubricants. The maximum performance of liquid distillation is up to 32 cubic meters per hour, the diameter of the inclusions is up to 5 mm. The unit is capable of pumping out from a depth of up to 25 meters. The permissible temperature of the pumped liquid is from -40 to +50 degrees.
• "Yanmar YDP 20 TN" - Japanese motor pump for dirty water. Pumping capacity - 33 cubic meters of liquid per hour. The permissible size of foreign particles is up to 25 mm, it is capable of passing particularly hard elements: small stones, gravel. Starting is done with a recoil starter. The maximum water supply height is 30 meters.
• "Caffini Libellula 1-4" - mud pump of Italian production. Designed for pumping oil products, liquid fuel, fuels and lubricants, other viscous substances with a high content of acids and inclusions. Pumping capacity - 30 cubic meters per hour. Allows particles up to 60 mm in diameter to pass through. Lifting height - up to 15 meters. Engine start - manual.

• "Vepr MP 120 DYa" - Russian-made motorized fire pump. Designed only for pumping clean water without large foreign inclusions. It has a high head of water column - up to 70 meters. Productivity - 7.2 cubic meters per hour. Starter type - manual. Installation weight - 55 kilograms. The size of the nozzles is 25 mm in diameter.
• "Kipor KDP20". Country of origin - China. It is used for pumping clean non-viscous liquids with foreign particles no more than 5 mm in diameter. The maximum pressure level is up to 25 meters. The pumping capacity is 36 cubic meters of liquid per hour. Four-stroke engine, recoil starter. The weight of the device is 40 kg.
• "Varisco JD 6-250" - a powerful installation from an Italian manufacturer. It is used for pumping contaminated liquid with particles up to 75 mm in diameter. Maximum productivity - 360 cubic meters per hour. Four-stroke engine with automatic start.

• "Robin-Subaru PTD 405 T" - suitable for both clean and highly contaminated water. Allows particles up to 35 mm in diameter to pass through.Equipped with a centrifugal pump unit and a four-stroke engine. It has a high power and productivity - 120 cubic meters per hour. Head height - up to 25 meters, unit weight - 90 kg. Manufacturer - Japan.
• "DaiShin SWT-80YD" - Japanese diesel motor pump for polluted water with a productive capacity of up to 70 cubic meters per hour. Able to pass blotches up to 30 mm. The head of the water column is 27-30 meters depending on the viscosity of the liquid. It has a powerful air-cooled four-stroke engine.
• "Champion DHP40E" - installation from a Chinese manufacturer for pumping clean water with foreign elements up to 5 mm in diameter. Pressure capacity and water column height - up to 45 meters. Liquid pumping capacity - up to 5 cubic meters per hour. The diameter of the suction and discharge nozzles is 40 mm. Engine start type - manual. Unit weight - 50 kg.

• Meran MPD 301 - Chinese motor-pump with a productive pumping capacity - up to 35 cubic meters per hour. The maximum height of the water column is 30 meters. The unit is intended for clean and slightly contaminated water with inclusions up to 6 mm. Four-stroke engine with manual start. The weight of the device is 55 kg.
• Yanmar YDP 30 STE - diesel pump for clean water and moderately contaminated liquid with the entry of solid particles no more than 15 mm in diameter. Raises water to a height of 25 meters, pumping capacity is 60 cubic meters per hour. Has a manual engine start. The total weight of the unit is 40 kg. Outlet pipe diameter - 80 mm.
• "Skat MPD-1200E" - device of joint Russian-Chinese production for liquid of medium pollution level. Productivity - 72 cubic meters per hour. Allows particles up to 25 mm to pass through. Automatic start, four-stroke motor. Unit weight - 67 kg.

In different models, during repair, you can use both interchangeable and only original spare parts. For example, Japanese and Italian units do not provide for the installation of non-original parts. In Chinese and Russian models, it is permissible to use similar spare parts from other manufacturers. This fact must be taken into account when choosing a product.

For an overview of a powerful diesel motor pump, see the video below.