What Is an Oil Pump?

The oil pump is a light and compact pump, which has three types: inline, distribution and single type. The oil pump requires a power source to run, and the camshaft at the bottom is driven by the engine crank gear.

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The oil pump is a light and compact pump, which has three types: inline, distribution and single type. The oil pump must have

Regardless of the type, the key to the oil pump is a "

Pay attention to the following aspects for the maintenance of the oil pump:

1.

Oil pump displacement control: liquid control and electronic control

Hydraulic oil pump consists of four parts: pump body, rectangular oil tank, pressure handle, ultra-high pressure steel wire braided hose.

After investigation we found that many

1. The conveying medium does not contain solid particles, and the temperature range is between -45-420 degrees Celsius.

2. Flow: Q = 6.25-500m3 / h; Head: H = 35-603m.

Generally speaking, the fuel consumption of a diesel generator is related to the following two factors:

1. Fuel consumption rate: Different brands of diesel generator sets have different fuel consumption rates and different fuel consumption;

Second, the size of the electric load, the larger the load is, the larger the fuel consumption is, the larger the load is, and the smaller the relative fuel consumption is, the smaller it is.

In order to facilitate everyone to understand the approximate fuel consumption of the generator set, calculate the use cost of the generator set; Xinghuo Electrical told you to calculate the approximate reference value (30kw-500kw).

Fuel Consumption of 30kw Diesel Generator Set = 6.3 kg (kg) = 7.8 liters (L)

45kw diesel generator fuel consumption = 9.45 kilograms (kg) = 1.84 liters (L)

Fuel consumption of 50kw diesel generator set = 10.5 kg (kg) = 13.1 liters (L)

75kw diesel generator set fuel consumption = 15.7 kg (kg) = 19.7 liters (L)

Fuel consumption of 100kw diesel generator set = 21 kilograms (kg) = 26.25 liters (L)

Fuel consumption of 150kw diesel generator set = 31.5 kilograms (kg) = 39.4 liters (L)

200kw diesel generator fuel consumption = 40 kilograms (kg) = 50 liters (L)

250kw diesel generator fuel consumption = 52.5 kilograms (kg) = 65.6 liters (L)

300kw diesel generator fuel consumption = 63 kilograms (kg) = 78.75 liters (L)

Fuel consumption of 350kw diesel generator set = 73.5 kilograms (kg) = 91.8 liters (L)

400kw diesel generator fuel consumption = 84.00 kilograms (kg) = 105.00 liters (L)

450kw diesel generator fuel consumption = 94.50 kilograms (kg) = 118.00 liters (L)

Fuel consumption of 500kw diesel generator set = 105.00 kilograms (kg) = 131.20 liters (L)

The above are only estimates and are for reference only.

The specific calculation method for the fuel consumption of diesel generators is as follows:

One liter of diesel is about 0.84-0.86 kg (1L = 0.8-0.85KG).

Most manufacturers of diesel generators use the parameters G / KW.H, which means how many grams (G) of oil is consumed per kilowatt per hour of the generator set, and then the unit is changed to liters (L) to know that you Fuel cost per hour.

The selection basis of the oil pump should be based on the technical process and system requirements, and consider from five aspects: liquid properties, liquid delivery volume, device pressure, pipeline layout, and operating conditions.
1. Liquid properties, including the name of the liquid medium, physical properties, chemical properties, and other properties. The physical properties include temperature c, density d, viscosity u, solid particle diameter and gas content in the medium, etc. This involves the pressure of the system, which is required. Kinetic calculation and suitable pump type: Chemical properties, which mainly refer to the chemical corrosivity and toxicity of liquid medium, are the important basis for selecting oil pump materials and which type of shaft seal.
2. Flow is one of the important performance data of the optional oil pump, which is directly related to the production capacity and delivery capacity of the entire device. When selecting a cycloidal gear pump, take the maximum flow as the basis and take into account the normal flow. When there is no maximum flow, usually 1.1 times the normal flow can be taken as the maximum flow. General industrial pumps can ignore the leakage in the pipeline system in the process flow, but must consider the impact on the flow when the process changes.
3. The pressure required by the device system is another important performance data of the gear oil pump. Generally, the pressure of the 5% -10% margin is used to select the model of the cycloid gear pump. This includes: suction tank pressure, drain tank pressure, pressure drop (pressure loss) in the piping system.
4. The pipeline layout conditions of the oil pump device system refer to the liquid delivery height, liquid delivery distance, and liquid delivery direction. For system pressure calculation and power check. Piping system data should also be fitted with device characteristic curves if required. When designing and laying out the pipeline, the following matters should be paid attention to:
A. Reasonably choose the pipe diameter. The pipe diameter is large. At the same flow rate, the liquid flow speed is small and the resistance loss is small. However, the high price and small pipe diameter will cause the resistance loss to increase sharply and increase the pressure of the selected pump. With increased power, both costs and operating costs increase. Therefore, it should be considered from a technical and economic perspective.
B. Valve and check valve must be installed on the discharge side of the pump. The valve is used to adjust the operating point of the pump, and the check valve prevents the oil pump from reversing when the liquid flows backward.
C. The pipeline layout should be arranged as straight as possible. Minimize the attachments in the pipeline and minimize the length of the pipeline. When it is necessary to turn, the bend radius of the elbow should be 3 to 5 times the diameter of the pipeline, and the angle should be greater than 90. .
D. The maximum pressure that the discharge pipe and its joints can bear shall be considered.
5. There are many operating conditions of the oil pump, such as the operating temperature of the liquid, the pressure on the suction side, the pressure on the discharge side, the altitude, the ambient temperature, whether the operation is gap or continuous, and whether the position of the gear pump is fixed or movable.

What is the reason for the gear oil pump not being oiled

Gear oil pump is a device that converts mechanical energy into hydraulic energy by a pair of gears that mesh with each other. It is widely used in the lubrication system of air compressors. The failure of the oil pump in operation is usually a decrease in oil pressure in the lubrication system, and sometimes even oil failure.
The reasons are generally:
1) The rotation direction is opposite to the specified direction;
2) The suction pipe is not tight and the check valve is stuck;
3) Poor seal between the pump body and the pump cover;
4) The amount of oil in the oil tank is insufficient;
5) The oil pump parts are severely worn;
6) The suction filter is blocked.
In actual work, different treatments should be performed according to specific situations. Special attention should be paid to the sealing of the oil suction pipeline and the seal between the gear oil pump body and the pump cover during maintenance. If the suction end is not properly sealed, air will leak into the inlet of the oil pump, which will cause the oil pump to evacuate.

We usually divide oil pumps into cold oil pumps and hot oil pumps, so how to distinguish between cold oil pumps and hot oil pumps? Specifically, they have the following eight differences:

1. The type of hot oil pump is generally indicated by the letter R, and the cold oil pump is indicated by the letter J.

2. The gap of the hot oil pump mouth ring is large, and the cooling pump is small.

3. The pump body of the hot oil pump adopts the vertical segment type, while the pump body of the cold oil pump adopts the horizontal center-open type. Some hot oil pumps have a structure that prevents the center line of the pump body from moving.

4. Generally, the sealing mechanism of the hot oil pump is filled with sealing oil, while the cold oil pump is not filled.

5. Carbon steel and alloy steel are mostly used for hot oil pumps, while cast iron can be used for cold oil pumps.

6. The support of the hot oil pump, the bearing box, and the mechanical seal of the packing box need water cooling, but the cold oil pump can be omitted.

7. The hot oil pump needs to be warmed up before starting, while the cold oil pump is the same, the cold oil pump is unnecessary.

8. The operating temperature is below 200 degrees Celsius as a cold oil pump and above 200 degrees Celsius as a hot oil pump.

Oil pumps are often used in daily production, and oil pumps are required in many places. However, when using the oil pump , there are some points that we must pay attention to, we must do so, so as to ensure the normal work of the oil pump , the highest working efficiency and the longest service life.
What are the taboos when using the oil pump ? From the perspective of oil pump maintenance and maintenance, we must first talk about the following points.
1. In use, it is strictly forbidden to add diesel oil to the gear oil for dilution, and do not bake the rear axle and transmission because it affects the start in winter, so as to avoid serious deterioration of the gear oil. If this happens, replace with a low viscosity multi-stage gear oil.
Second, do not confuse the classification of engine oil and oil pump . To avoid confusion in the calculation standards, a high classification mark is used for gear oil, and a low classification mark is used for engine oil. However, the grade number of the old gear oil is lower. It should be noted that gear oil and engine oil viscosity levels are not related and cannot be used interchangeably with the same model. Do not use gear oil as engine oil, otherwise serious accidents such as burning bushes, sticking cylinders and sintered piston tops will occur in the engine.
Third, the rational use of oil pumps is conducive to gear maintenance. Gear oil has a longer service life. If a single-grade oil is used, different viscosity numbers are used during seasonal maintenance. If the old oil released is not within the oil change period, it can be used in the car when the oil is changed again. Used oil should be kept in a safe place, protected from water, mechanical impurities and waste oil.
Fourth, change the oil in time. The new oil should be replaced according to the specified oil change index. When there is no oil quality analysis means, the oil can be changed within the prescribed period. The oil change period recommended by automobile manufacturers is 30,000-48000km. When changing oil, drain the old oil while it is hot, and clean the gears and gearboxes before adding new oil. When refueling, prevent water and impurities from entering.
Fifth, the amount of refueling should be appropriate. The amount of oil should be appropriate, not too much or too little. Too much will not only increase the stirring resistance and fuel consumption, but also the gear oil may be mixed into the brake drum through the rear axle housing (if the seal is not good) and cause brake failure; Adversely affects gear repair. The gear oil level should generally be flush with the lower edge of the gear box fuel inlet, and the gear oil tanks should be checked frequently for leaks, and the oil seals and gaskets must be intact.

1. How does it work?
   The pump moves liquid in several ways:
   Generally accepted industry standards, such as the Hydraulic Society, define a method according to which energy pumps are imparted to liquids: kinetic energy pumping, or positive displacement (PD) pumps.
   Kinetic energy type-A centrifugal pump imparts energy to a liquid via centrifugal power produced by a replacement propeller, disk or other blade form. Pumps are made in many shapes and sizes, and centrifugation, unlike each other, both reach a perceptible level internally and externally. Despite their appearance, all centrifugal pumps use the same mechanical principles. The pumping action is obtained from a propeller driven by a bridge or magnetic coupling to a motor or some other propulsion device, connected. The propeller is replaced at a rate of speed (usually 1725 or 3450 rpm) (rotating cw or ccw direction), and the liquid is pumped from the propeller's eye (center) to the centrifugal action of the propeller's outside (periphery) flow. Like the flow of peripheral liquid from the propeller, it is guided to the pump's relief port by a vortex in a shaped channel. All centrifugal pumps come in with liquid in the center of the propeller, and move it outwards between the blades.
   Positive displacement pumps-bellows, double-diaphragm, flexible propellers, gears, vibrations, pistons, boost holes, rotating circular protrusions, rotating vanes and peristaltic pumps have a liquid passing through the drum, gear or Fixed holes pushed by promoters. If the liquid is pushed through, it leaves emptiness or a vacuum drawn in more liquid. Metering pumps with meter-bellows, diaphragm, peristaltic, piston, and syringe pumps are all metered into a chamber with a metering pump that pulls liquid through the insert flap, closes the insert flap, and then strives to complete the liquid Exit flap.
   2. Is the centrifugal pump variable the speed?
   Most centrifugal pumps do not allow variables to accelerate the motor. However, you can control the rate of flow on lift using a flap.
   3. What exactly is an active displacement pump?
   An active displacement pump emits a given volume of liquid for each revolution of the motor. Bellows, double-diaphragm, flexible propellers, gears, vibrations, pistons, boost holes, rotating circular protrusions, rotating vanes and peristaltic pumps are all positive displacement pumps.
   4. Which pump can I run?
   The peristaltic, piston due to the ceramic head, the bellows pumps, and the diaphragm pump can run dry for any length of time. Centrifugal, rotating weather vanes and gear pumps should not be run dry; the exception is if the gears or propellers are made of self-lubricating materials, such as RYTON pumps may be run for a few minutes when detonators are installed.
   5. What is the maximum viscosity grade of the pump?
   This depends on the type and characteristic of the pump. Diaphragm pumps (especially double-diaphragm pumps) and gear pumps are usually the best for viscous liquids.
   6. What pump do you carry that will handle particles?
   Diaphragm pumps, bellows pumps and peristaltic pumps will work well. When choosing materials, consider chemical compatibility and resistance to wear. Use a pump with larger fittings so they don't block as easily.
   7. I need a gentle pump action. What do you recommend?
   A peristaltic pump for low speeds. You can also use a diaphragm pump, once again at low speed. Centrifugal and gear pumps , which work at high speeds and have high trimming rates, should be avoided.
   8. When do you run maintenance on the pump?
   It depends on the pump and application. In general, the diaphragm of a pump is metered by a meter in about 6 to 12 months; the gear in a gear pump lasts about 3 to 6 months; and the motor usually lasts for several years. DC motors require periodic brush replacement. It is important to detect brush wear; normally brushes should be replaced every 6 months.

Oil pump installation instructions:
1. The quality of the pump installation has a very important impact on the smooth operation and service life of the pump, so the installation and calibration must be carried out carefully and must not be rushed.
2. The installation height, length and diameter of the suction pipe of the pump should meet the calculated values, strive to be short and reduce unnecessary losses (such as elbows, etc.); and ensure that the pump does not exceed its allowable cavitation margin during operation.
3. Suction and discharge lines should have brackets. The pump must not be subjected to piping loads.
4. The place where the pump is installed should be wide enough to facilitate the maintenance work.
Installation sequence:
1. Place the unit on the foundation with buried anchor bolts. Between the base and the foundation, use a pair of wedge pads for correction.
2. Loosen the coupling shaft and place it on the pump shaft and the base with a spirit level. Adjust the level of the unit by adjusting the wedge pads and tighten the anchor bolts properly to prevent walking.
3. Correct the concentricity of the pump shaft and the motor shaft, and allow a deviation of 0.1 mm on the outer circle of the coupling road; the gap between the two coupling planes should be guaranteed to be 2 to 4 mm. The tolerance is 0.3 mm.
4. After connecting the piping and determining the direction of rotation of the motor, connect the coupling and check the concentric fragrant of the shaft again.
5. After the unit's actual test run for 2 to 3 hours, make a final inspection. If there is no adverse phenomenon, the installation is considered qualified. The temperature and vibration of the bearings during the trial operation are as follows:
6. During installation, in order to prevent sundries from falling into the machine, all holes of the unit should be covered.
7. In order to prevent debris in the pipeline from entering the pump, for newly installed pipelines, a filter should be installed in the pump glue, and its effective cross-section should be 2 to 3 times the cross-section of the suction pipe.