CN207230127U - A kind of birotor lubricating oil pump - Google Patents

Abstract

It the utility model is related to electronic element processing equipment technical field,Specially a kind of birotor lubricating oil pump,It is still able to ensure the lubrication that engine is good when can ensure that engine location run-off the straight certain angle,Including the pump housing,Pump cover,Two independent rotor chambers are equipped with the pump housing,Main pump rotor and auxiliary pump rotor are respectively equipped with the rotor chamber,Main pump inlet port is provided with the pump cover,Main pump oil discharge outlet,Auxiliary pump inlet port and auxiliary pump oil discharge outlet,The main pump inlet port connects oil sump bottom left oil pipe,The main pump oil discharge outlet connects engine main oil gallery,The auxiliary pump inlet port connects oil sump bottom right oil pipe,The auxiliary pump oil discharge outlet connects the oil sump of the main pump inlet port side,The shaft end of the main pump rotor and the shaft end of auxiliary pump rotor are installed with driven gear,The driven gear is driven by engine crankshaft.

Description

A double rotor oil pump

technical field

The utility model relates to the technical field of oil pumps, in particular to a double-rotor oil pump.

Background technique

As the lubricating oil supply part of the engine, the oil pump plays an indispensable role in the continuous and reliable operation of the engine. In practical applications, the engine will cause abnormal oil level in the oil pan due to the inclination of the entire mechanical equipment (for example, the oil level in the oil pan of the engine applied on a ship is abnormal due to the inclination of the hull), in this case, the engine’s engine The oil pump cannot normally suck lubricating oil from the oil pan, causing dry friction of the engine, ranging from protective shutdown of the engine to serious engine accidents such as cylinder scuffing and tile burning.

Utility model content

The purpose of the utility model is to provide a dual-rotor oil pump, which can ensure that the oil can still be pumped from the oil pan to the main oil passage of the engine when the engine is tilted, greatly enhancing the efficiency of the existing engine in the tilted state. lubricity.

In order to achieve this purpose, the utility model adopts the following technical solutions: a double-rotor oil pump, which can ensure good lubrication of the engine when the engine position is tilted at a certain angle, including a pump body and a pump cover, and the pump body is equipped with There are independent main pump rotor chamber and auxiliary pump rotor chamber, the main pump rotor chamber is provided with the main pump rotor, the auxiliary pump rotor chamber is provided with the auxiliary pump rotor, and the pump cover is provided with the main pump oil suction The oil outlet of the main pump, the oil suction port of the auxiliary pump and the oil discharge port of the auxiliary pump. The oil suction port of the pump is connected to the oil pipe on the right side of the bottom of the oil pan, the oil discharge port of the auxiliary pump is connected to the oil pan on the side of the oil suction port of the main pump, and the shaft end of the rotor of the main pump and the shaft end of the rotor of the auxiliary pump are fixed A driven gear is installed, which is driven by the engine crankshaft.

Further, the pump body is provided with an oil drain tank that communicates with the oil outlet of the main pump and the oil inlet of the auxiliary pump.

Further, the pump cover is also provided with a lubricating oil groove connecting the oil pan and the shaft hole of the auxiliary pump shaft.

Further, a pressure relief valve is also provided at the oil discharge port of the main pump on the pump body. The pressure relief valve includes a valve body, a plunger and a plunger spring arranged in the valve body, and a relief The oil port, the oil drain port communicates with the oil suction port of the main pump.

Further, the valve body is also provided with a vent hole, and the vent hole communicates with the oil suction port of the main pump.

The beneficial effects of the utility model are: the utility model overcomes the problem that the oil pump in the prior art cannot pump oil from the oil pan when the engine is tilted greatly, and greatly improves the application field and reliability of the engine. At the same time, The dual-rotor designed oil pump does not cause large power consumption. Under normal use, the main pump rotor and auxiliary pump rotor can completely rely on their own oil suction and lubrication. On the other hand, the dual-rotor oil pump can also enhance the balance of the engine. Performance, for an engine with an odd number of cylinders, it can also act as a balance shaft.

Description of drawings

Fig. 1 is the overall schematic diagram of the utility model embodiment.

Fig. 2 is a partial schematic diagram of an embodiment of the utility model.

Fig. 3 is a partial schematic diagram of an embodiment of the utility model.

Fig. 4 is a schematic diagram of a pressure relief valve according to an embodiment of the present invention.

In the picture:

1-Pump body 2-Pump cover 3-Main pump rotor

3a-Main pump oil suction port 3b-Main pump oil discharge port 4-Auxiliary pump rotor

4a-Auxiliary pump oil suction port 4b-Auxiliary pump oil discharge port 5-Oil hole

6-Oil drain tank 7-Pressure relief valve 7a-Valve body

7b-Plunger 7c-Plunger spring 7d-Drain port

8- Vent.

Detailed ways

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "inside", "outside" and the like are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the Describes, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the present invention.

In addition, the terms "mounted", "connected" and "connected" should be interpreted in a broad sense, for example, it may be a mechanical connection or an electrical connection, or an internal communication between two components, either directly or indirectly through an intermediary. In connection, those skilled in the art can understand the specific meanings of the terms according to specific situations.

In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the implementation modes are not limitations of the utility model.

As shown in Figure 1, a double-rotor oil pump can ensure that the engine is well lubricated when the engine position is greatly inclined, and includes a pump body 1 and a pump cover 2. The pump body 1 is provided with mutually independent Main pump rotor chamber and auxiliary pump rotor chamber, the main pump rotor chamber is provided with a main pump rotor 3, the auxiliary pump rotor chamber is provided with an auxiliary pump rotor 4, and the pump cover 2 is provided with a main pump oil suction port 3a, main pump oil discharge port 3b, auxiliary pump oil suction port 4a and auxiliary pump oil discharge port 4b, the main pump oil suction port 3a is connected to the left oil pipe at the bottom of the engine oil pan, and the main pump oil discharge port 3b is connected to the engine The main oil passage of the main pump, the auxiliary pump oil suction port 4a is connected to the right oil pipe at the bottom of the engine oil pan, the auxiliary pump oil discharge port 4b is connected to the oil pan on the side of the main pump, and the main pump rotor 3 and The auxiliary pump rotors 4 are all driven by the main gear on the crankshaft of the engine.

In the actual application of the engine, how to ensure that the engine can still obtain good lubrication under severe conditions is a very important indicator for assessing engine performance, and of course it is also an important indicator that directly affects the reliability of the engine. In particular, it needs to be emphasized that, Various attempts have been made in the prior art to lubricate the engine under inclined conditions, but no one has proposed the idea of adopting a double-pump design. The main reason is that the double-pump design will inevitably bring a certain amount of power consumption. To ensure good lubrication of the two independent pump bodies, it is often necessary to set up more complicated lubrication pipelines. Power loss and pipeline layout are very taboo issues for the engine itself, but the inventor boldly conceived and adopted a dual-rotor design, and it also particularly emphasizes that the two rotors are arranged horizontally on the side of the engine, so that the rotor shafts of the main pump rotor and the auxiliary pump rotor are parallel to the crankshaft space of the engine, and the rotating main pump rotor 3 and auxiliary pump rotor 4 can overcome The unbalanced shaking of the engine during operation (this structural design is quite similar to the balance shaft design of some engines), the bold attempt of the inventor undoubtedly broke through the bottleneck of the existing technicians and made a major breakthrough.

Further, the pump body 1 is provided with an oil drain tank 6 communicating with the oil discharge port 3b of the main pump and the oil inlet port 4a of the auxiliary pump.

In the normal running state, that is, the engine does not tilt, at this time, the main pump of the oil pump may have a state where the oil discharge pressure is too high. If the oil discharge pressure is too high, it will cause a large rotation of the crankshaft of the engine. On the other hand, the excessive oil discharge pressure will eventually be converted into the internal energy of the lubricating oil, resulting in an increase in the discharge oil temperature, which will affect the viscosity of the lubricating oil in the engine. Therefore, it is necessary to The oil discharge port is provided with a pressure relief channel.

Further, the pump cover 2 is also provided with an oil hole 5 communicating with the oil pan and the shaft hole of the auxiliary pump rotor 4 .

Since the auxiliary pump is not used as the main oil pump unit under normal conditions, the actual rotor shaft of the auxiliary pump rotor 4 does not bear a large load, so the oil in the oil pan can be directly used to carry out its operation. Lubrication, so the inventor has offered the oil hole 5 that communicates with the shaft hole of the oil pan and the auxiliary pump rotor 4 on the pump cover 2 .

Further, a pressure relief valve 7 is also provided at the main pump oil discharge port 3b on the pump body, and the pressure relief valve 7 includes a valve body 7a, a plunger 7b and a plunger spring 7c arranged in the valve body 7a, The middle part of the valve body 7a is provided with an oil drain port 7d, and the oil drain port 7d communicates with the oil suction port 3a of the main pump. In order to prevent the oil drain tank 6 from clogging and causing the aforementioned problem—the main pump of the oil pump may have a state where the oil discharge pressure is too high, the inventor has further provided a pressure relief valve on the pump body.

Further, the valve body 7a is also provided with a vent hole 8, and the vent hole 8 communicates with the oil suction port 3a of the main pump. In order to ensure the normal operation of the pressure relief valve, the air pressure generated by the normal movement of the plunger 7b in the pressure relief valve 7 must also be released, so the inventor has provided an exhaust hole 8 on the valve body 7a

The above-mentioned embodiment is a preferred implementation of the utility model. In addition, the utility model can also be realized in other ways. Any obvious replacement is within the scope of protection of the utility model without departing from the concept of the technical solution. Inside.

In order for those of ordinary skill in the art to more easily understand the improvement of the utility model compared to the prior art, some drawings and descriptions of the utility model have been simplified, and for the sake of clarity, this application document has also omitted some other elements, those of ordinary skill in the art should be aware that these omitted elements may also constitute the content of the present utility model.

Claims (5)

1. a kind of birotor lubricating oil pump, it can be ensured that engine location occurs to be still able to ensure during larger inclination that engine is good Lubrication, including the pump housing（1）, pump cover（2）, it is characterised in that：The pump housing（1）It is interior to be equipped with mutually independent main pump rotor chamber and pair Pump rotor chamber, the main pump rotor chamber is interior to be equipped with main pump rotor（3）, the auxiliary pump rotor chamber is interior to be equipped with auxiliary pump rotor（4）, it is described Pump cover（2）On be provided with main pump inlet port（3a）, main pump oil discharge outlet (3b), auxiliary pump inlet port（4a）With auxiliary pump oil discharge outlet（4b）, The main pump inlet port（3a）Connect oil sump bottom left oil pipe, the main pump oil discharge outlet（3b）Engine main oil gallery is connected, The auxiliary pump inlet port（4a）Connect oil pipe on the right side of engine oil pan bottom, the auxiliary pump oil discharge outlet（4b）Connect the main pump The oil sump of side, the main pump rotor（3）Armature spindle and auxiliary pump rotor（4）Armature spindle on by engine crankshaft Master gear drives.

2. birotor lubricating oil pump according to claim 1, it is characterised in that：The pump housing（1）It is equipped with connection main pump row Hydraulic fluid port（3b）With auxiliary pump inlet port（4a）Draining oil groove（6）.

3. birotor lubricating oil pump according to claim 1, it is characterised in that：The pump cover（2）On be additionally provided with the oily bottom of connection Shell and auxiliary pump rotor（4）Shaft axis hole oilhole（5）.

4. birotor lubricating oil pump according to claim 1, it is characterised in that：The pump housing（1）Upper main pump oil discharge outlet（3b） Place is additionally provided with a relief valve（7）, the relief valve（7）Including valve body（7a）With arranged on valve body（7a）Interior plunger（7b）And plunger Spring（7c）, the valve body（7a）Middle part is equipped with drain tap（7d）, the drain tap（7d）Connect the main pump inlet port（3a）.

5. birotor lubricating oil pump according to claim 4, it is characterised in that：The valve body（7a）On be additionally provided with exhausting-gas hole （8）, the exhausting-gas hole（8）Connect main pump inlet port（3a）.