CN210716891U

CN210716891U - Rotor type oil transfer pump of diesel engine

Info

Publication number: CN210716891U
Application number: CN201920641836.8U
Authority: CN
Inventors: 方斐
Original assignee: Nanjing Shuangfeng Oil Pump Co ltd
Current assignee: Nanjing Shuangfeng Oil Pump Co ltd
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2020-06-09
Anticipated expiration: 2029-05-07

Abstract

The utility model discloses a diesel engine rotor formula fuel delivery pump, the test platform comprises a support, there are the motor and the fuel delivery pump body on the upper surface of frame along horizontal both ends tip fixed mounting respectively, one side lateral wall bolt fastening that the motor was kept away from to the fuel delivery pump body has the apron, one side lateral wall bolt fastening that the fuel delivery pump body is close to the motor has the end cover, the drive end cover of motor is equipped with first axle sleeve, the fuel delivery pump body is close to a side end of end cover and has seted up the oil inlet, the upper surface of the fuel delivery pump body is close to one side of motor and has seted up the oil-out, the inside of the fuel delivery pump body is equipped with the. A diesel engine rotor formula fuel delivery pump, can guarantee the stable effect of transportation process again when guaranteeing the conveying capacity, can avoid the extrusion between the traditional inner rotor to cause the problem that the inner rotor damaged, prolong the life of whole fuel delivery pump, bring better use prospect.

Description

Rotor type oil transfer pump of diesel engine

Technical Field

The utility model relates to a fuel delivery pump field, in particular to diesel engine rotor formula fuel delivery pump.

Background

The engine oil pump of the diesel generator set is used for supplying engine oil with certain pressure and flow in a circulating oil path of a lubricating system, so that the diesel engine is lubricated. At present, gear type and rotor type oil delivery pumps are widely used on diesel engines, and the rotor type oil delivery pump mainly comprises two rotors which are eccentrically and internally meshed, a shell and the like. The rotor type oil pump has the advantages of small volume, light weight, simple and compact structure, high-speed operation, stable operation, low noise, long service life and wider application on small and medium-sized diesel engines.

The traditional oil transfer pump is relatively complex in structure, large in occupied area and not suitable for use of a diesel engine, in addition, the traditional rotor type oil transfer pump cannot avoid the situation that large pressure pulsation is generated in a pump body, the abrasion of a rotor can be caused by long-term use, the service life of the whole oil transfer pump is further shortened, and meanwhile, the stable effect that the oil transfer pump guarantees high conveying capacity and operation under high-speed rotation is guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a rotary oil transfer pump of a diesel engine.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a rotor type oil transfer pump of a diesel engine comprises a base, wherein a motor and an oil transfer pump body are respectively and fixedly installed on the upper surface of the base along the end parts of the two transverse ends, a cover plate is fixed on the side wall of one side, far away from the motor, of the oil transfer pump body, an end cover is fixed on the side wall of one side, close to the motor, of the oil transfer pump body, a first shaft sleeve is sleeved on the driving end of the motor, an oil inlet is formed in the end part, close to the end cover, of the oil transfer pump body, an oil outlet is formed in one side, close to the motor, of the upper surface of the oil transfer pump body, an oil transfer mechanism is arranged inside the oil transfer pump body, a second shaft sleeve is arranged on the inner side wall of one end, close to the cover plate, of the inside of the oil transfer pump body, adjusting gaskets are symmetrically arranged, and the two transmission gears are meshed with each other.

As a further description of the above technical solution:

the oil transportation mechanism includes inner chamber, external rotor, main shaft, first inner rotor, pivot, second inner rotor, stand and wear-resisting cover, the inner chamber has been seted up to the inside of the oil transportation pump body, the inside wall pine cover of inner chamber has the external rotor, the drive end of motor has cup jointed the main shaft, the main shaft extends to the inside one end of inner chamber and has cup jointed first inner rotor, and the main shaft is located the inside one end surface cover of end cover and have one of them drive gear, another drive gear's surface is inserted and is equipped with the pivot, the pot head that the inside of pivot inner chamber extends has the second inner rotor, one side inside wall bearing connection that the oil transportation pump body is close to the end cover has the stand, the surface cover of stand.

As a further description of the above technical solution:

the main shaft, the rotating shaft and the upright post are parallel to each other and are positioned at the same height, the first inner rotor and the second inner rotor are formed by powder metallurgy pressing, and the first inner rotor and the second inner rotor are respectively abutted to the wear-resistant sleeves on the outer surfaces of the upright posts.

As a further description of the above technical solution:

the first inner rotor and the second inner rotor are fixedly arranged on the outer surfaces of the main shaft and the rotating shaft through half-moon keys respectively, and the main shaft and one end of the rotating shaft extending to the cover plate are sleeved with the second shaft sleeve.

As a further description of the above technical solution:

the horizontal axes of the first inner rotor, the second inner rotor and the upright post are all positioned on the same horizontal line.

As a further description of the above technical solution:

the shape of the inner cavity is oval, the shape of the outer rotor is matched with the shape of the inner cavity, and the first inner rotor and the second inner rotor are respectively meshed with the inner side walls of the outer rotor at two sides along the radial direction.

The utility model discloses in: 1. this diesel engine rotor formula fuel transfer pump, the stand and the wear-resisting cover of setting, under first inner rotor and second inner rotor have the higher rotational speed's the condition, first inner rotor and the mutual extrusion stand of second inner rotor, the release energy, guarantee transportation process's stable effect, can avoid the extrusion between the traditional inner rotor to cause the problem that the inner rotor damaged, prolong the life of whole fuel transfer pump, the inner chamber is compared in traditional circular inner chamber, the stroke increases but the pressure pulsation that can effectual even oil drip, first inner rotor and second inner rotor synchronous rotation simultaneously, can guarantee the delivery capacity, better for traditional mode.

Drawings

Fig. 1 is a schematic view of an overall structure of a rotary fuel pump of a diesel engine according to the present invention;

FIG. 2 is a side view at B of FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

in the figure: 1. a machine base; 2. a motor; 3. an oil delivery pump body; 4. a cover plate; 5. an end cap; 6. a first shaft sleeve; 7. an oil inlet; 8. an oil outlet; 9. an oil delivery mechanism; 901. an inner cavity; 902. an outer rotor; 903. a main shaft; 904. a first inner rotor; 905. a rotating shaft; 906. a second inner rotor; 907. a column; 908. a wear-resistant sleeve; 10. a second shaft sleeve; 11. adjusting the gasket; 12. a transmission gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, a rotor type oil transfer pump of a diesel engine comprises a base 1, a supporting motor 2 and an oil transfer pump body 3, wherein the motor 2 and the oil transfer pump body 3 are respectively and fixedly installed on the upper surface of the base 1 along the two transverse end portions, a cover plate 4 is fixed on the side wall of the oil transfer pump body 3 far away from the motor 2 through bolts, the cover plate and the end cover 5 have a sealing effect, the side wall of the oil transfer pump body 3 close to the motor 2 is fixedly provided with an end cover 5 through bolts, the driving end of the motor 2 is sleeved with a first shaft sleeve 6, the end of the oil transfer pump body 3 close to the end cover 5 is provided with an oil inlet 7, a diesel oil inlet is formed, an oil outlet 8 is formed on one side of the upper surface of the oil transfer pump body 3 close to the motor 2, a diesel oil outlet is formed in the oil transfer pump body 3, an oil transfer mechanism, the main shaft 903 and the rotating shaft 905 are fixed to guarantee a rotation stabilizing effect, adjusting gaskets 11 are symmetrically arranged on the inner side walls of two sides of the oil delivery pump body 3 in the vertical direction, oil-resistant paper is made to guarantee end face gaps between an inner rotor (outer rotor) and a shell, two transmission gears 12 connected with an oil delivery mechanism 9 are arranged on the side wall, close to the inner portion of the end cover 5, of the oil delivery pump body 3, it is guaranteed that the first inner rotor 904 and the second inner rotor 906 rotate synchronously, and the two transmission gears 12 are meshed with each other.

The oil delivery mechanism 9 comprises an inner cavity 901, an outer rotor 902, a main shaft 903, a first inner rotor 904, a rotating shaft 905, a second inner rotor 906, a vertical column 907 and a wear-resistant sleeve 908, the inner part of the oil delivery pump body 3 is provided with the inner cavity 901, the outer rotor 902 is loosely sleeved on the inner side wall of the inner cavity 901, the main shaft 903 is sleeved at the driving end of the motor 2, the first inner rotor 904 is sleeved at one end of the main shaft 903 extending to the inner part of the inner cavity 901, and the outer surface of one end of the main shaft 903 positioned in the end cover 5 is sleeved with one of the transmission gears 12, the outer surface of the other transmission gear 12 is inserted with a rotating shaft 905, one end of the rotating shaft 905 extending towards the inner cavity 901 is sleeved with a second inner rotor 906, the inner side wall of one side of the oil delivery pump body 3 close to the end cover 5 is in bearing connection with a stand column 907, and the outer surface of the stand column 907 is sleeved with a wear-resistant sleeve 908, so that the stand column 907 has a better wear-resistant effect when the first inner rotor 904 and the second inner.

The main shaft 903, the rotating shaft 905 and the upright column 907 are parallel to each other and located at the same height, the first inner rotor 904 and the second inner rotor 906 are formed by powder metallurgy pressing, the strength is good, the structural strength of the high-speed rotating inner rotor 904 and the high-speed rotating inner rotor 906 can be guaranteed, and the first inner rotor 904 and the second inner rotor 906 are respectively abutted to the wear-resistant sleeve 908 on the outer surface of the upright column 907.

The first inner rotor 904 and the second inner rotor 906 are fixedly mounted on the outer surfaces of the main shaft 903 and the rotating shaft 905 through half-moon keys respectively, so that the first inner rotor 904 and the second inner rotor 906, the main shaft 903 and the rotating shaft 905 can rotate synchronously, and the ends of the main shaft 903 and the rotating shaft 905, which extend towards the cover plate 4, are sleeved with the second shaft sleeve 10.

The horizontal axes of the first inner rotor 904, the second inner rotor 906 and the upright 907 are all located on the same horizontal line, and the installation heights are ensured to be consistent so as to ensure the stability during rotation.

The shape of the inner cavity 901 is elliptical, the shape of the outer rotor 902 is adapted to the shape of the inner cavity 901, and the first inner rotor 904 and the second inner rotor 906 are respectively meshed with inner side walls of the outer rotor 902 along two radial sides, so that the outer rotor 902 is driven to rotate by the first inner rotor 904 and the second inner rotor 906.

The working principle is as follows: the utility model relates to a diesel engine rotor type oil transfer pump, diesel oil gets into the inner chamber 901 of the oil transfer pump body 3 inside through oil inlet 7, meanwhile, motor 2 drive main shaft 903 rotates simultaneously because the intermeshing of two sets of drive gear 12 makes the main shaft 903 rotate simultaneously drive the synchronous rotation of pivot 905, and then make first inner rotor 904 and second inner rotor 906 clockwise synchronous rotation drive the rotation of outer rotor 902, diesel oil wraps up and is pressed from both sides and move to second inner rotor 906 between first inner rotor 904 and outer rotor 902, simultaneously second inner rotor 906 clockwise rotates wraps up and is pressed from both sides the diesel oil to inner chamber 901 method, transmit to oil-out 8 by outer rotor 902 and discharge, in addition, because be equipped with the stand 907 that wraps up wear-resisting cover 907 between first inner rotor 904 and second inner rotor 906, under the condition that first inner rotor 904 and second inner rotor 906 have higher rotational speed, first inner rotor 904 and second inner rotor 906 extrude stand 907 each other, the release energy, guarantee the stable effect of transportation process, can avoid the extrusion between the traditional inner rotor to cause the problem that the inner rotor damaged, prolong the life of whole fuel delivery pump, inner chamber 901 is compared in traditional circular inner chamber 901, the stroke increases but the pressure pulsation that can effectual even oil drip, first inner rotor 904 and second inner rotor 906 synchronous revolution simultaneously, can guarantee the delivery capacity, and is comparatively practical.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a diesel engine rotor formula fuel delivery pump, includes frame (1), its characterized in that: the oil pump is characterized in that a motor (2) and an oil delivery pump body (3) are respectively and fixedly mounted on the upper surface of the base (1) along the end portions of the two transverse ends, a cover plate (4) is fixedly arranged on the side wall of one side, far away from the motor (2), of the oil delivery pump body (3), an end cover (5) is fixedly arranged on the side wall of one side, close to the motor (2), of the oil delivery pump body (3), a first shaft sleeve (6) is sleeved on the driving end of the motor (2), an oil inlet (7) is formed in the end portion, close to the end cover (5), of one side, of the oil delivery pump body (3), an oil outlet (8) is formed in one side, close to the motor (2), of the upper surface of the oil delivery pump body (3), an oil delivery mechanism (9) is arranged inside the oil delivery pump body (3), a second shaft sleeve (10) is arranged on the inner side wall of one end, close to the cover, the side wall of one side, close to the inside of the end cover (5), of the oil delivery pump body (3) is provided with two transmission gears (12) connected with the oil delivery mechanism (9), and the two transmission gears (12) are meshed with each other.

2. The rotary fuel pump of a diesel engine as set forth in claim 1, wherein: the oil conveying mechanism (9) comprises an inner cavity (901), an outer rotor (902), a main shaft (903), a first inner rotor (904), a rotating shaft (905), a second inner rotor (906), an upright post (907) and a wear-resistant sleeve (908), the inner cavity (901) is formed in the oil conveying pump body (3), the outer rotor (902) is loosely sleeved on the inner side wall of the inner cavity (901), the main shaft (903) is sleeved at the driving end of the motor (2), the first inner rotor (904) is sleeved at one end, extending to the inner cavity (901), of the main shaft (903), one end, located inside an end cover (5), of the main shaft (903) is sleeved with one of the transmission gears (12), the outer surface of the other transmission gear (12) is inserted with the rotating shaft (905), the second inner rotor (906) is sleeved at one end, extending to the inner cavity (901), of the rotating shaft (905), and the inner side wall, close to the end cover (5), of the, the outer surface of the upright column (907) is sleeved with a wear-resistant sleeve (908).

3. A diesel engine rotary fuel pump as set forth in claim 2, characterized in that: the main shaft (903), the rotating shaft (905) and the upright post (907) are parallel to each other and located at the same height, the first inner rotor (904) and the second inner rotor (906) are formed by powder metallurgy pressing, and the first inner rotor (904) and the second inner rotor (906) are respectively abutted to wear-resistant sleeves (908) on the outer surface of the upright post (907).

4. A diesel engine rotary fuel pump as set forth in claim 2, characterized in that: the first inner rotor (904) and the second inner rotor (906) are fixedly arranged on the outer surfaces of the main shaft (903) and the rotating shaft (905) through half-moon keys respectively, and one ends of the main shaft (903) and the rotating shaft (905) extending towards the cover plate (4) are sleeved with the second shaft sleeve (10).

5. A diesel engine rotary fuel pump as set forth in claim 2, characterized in that: the horizontal axes of the first inner rotor (904), the second inner rotor (906) and the upright post (907) are all positioned on the same horizontal line.

6. A diesel engine rotary fuel pump as set forth in claim 2, characterized in that: the shape of the inner cavity (901) is oval, the shape of the outer rotor (902) is matched with the shape of the inner cavity (901), and the first inner rotor (904) and the second inner rotor (906) are respectively meshed with the inner side walls of the outer rotor (902) at two radial sides.