CN111720330B

CN111720330B - Roller pump rotor and roller pump

Info

Publication number: CN111720330B
Application number: CN202010525537.5A
Authority: CN
Inventors: 王刚; 张曦; 李阳; 杜春雷; 张明忠
Original assignee: Chongqing Wanli Lianxing Industrial Group Co ltd
Current assignee: Chongqing Wanli Lianxing Industrial Group Co ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2022-08-23
Anticipated expiration: 2040-06-10
Also published as: CN111720330A

Abstract

The invention discloses a roller pump rotor, which comprises a rotor body, wherein a central hole is formed in the rotor body, a plurality of roller grooves are uniformly distributed on the peripheral side of the rotor body, a wear-resistant part which protrudes out of the groove wall and has a low friction coefficient is embedded in the groove wall on one side of each roller groove, and when the rotor body rotates and drives the rollers, rolling friction is generated between the wear-resistant part and the rollers. The invention also discloses a roller pump, which comprises an oil inlet cover component, a shell and a pump body cover component which are connected in sequence, wherein a stator component, a rotor component and a pump body component are arranged in a containing cavity formed by the three components, and the pump body component comprises an oil inlet plate, an oil outlet plate, a roller and the rotor. The roller pump rotor of the invention enables the roller to rub the wear-resistant part when rotating through embedding the wear-resistant part, thereby avoiding overlarge noise and vibration when in operation due to the direct rubbing of the roller and the rotor body, and simultaneously reducing power loss due to smaller friction coefficient and effectively improving efficiency.

Description

Roller pump rotor and roller pump

Technical Field

The invention belongs to the field of fuel pumps, and particularly relates to a roller pump rotor and a roller pump.

Background

The electric fuel pump is used for continuously sucking fuel out of a fuel tank and supplying the fuel with a specified pressure in a fuel system. The roller pump is the most common structural type of an electronic injection motorcycle, and the roller pump ensures that gasoline is sucked at one side (inlet) with the larger volume and is pressed out at one side (outlet) with the smaller volume by utilizing the volume change of a part contained by a rotor, a roller and a pump sleeve, and the pressure of the fuel is increased.

The rotor of the existing roller pump is a single die casting, and the contact area of the rotor with an oil inlet plate and an oil outlet plate is large, so that the noise and vibration caused by the rotation of the rotor are large, and the efficiency is low.

Disclosure of Invention

In view of the above-mentioned problems, the present invention is directed to a roller pump rotor and a roller pump, which can significantly reduce noise and vibration when the rotor is operated.

Therefore, the technical scheme adopted by the invention is as follows: the roller pump rotor comprises a rotor body, wherein a central hole is formed in the rotor body, a plurality of roller grooves are uniformly distributed on the periphery of the rotor body, a wear-resistant part protruding out of the groove wall and having a low friction coefficient is embedded in the groove wall on one side of each roller groove, and when the rotor body rotates and drives a roller, rolling friction occurs between the wear-resistant part and the roller.

Preferably, the inner side wall of one end of the wear-resistant part close to the central hole is in smooth transition with the groove wall, and jointly forms an arc-shaped structure adaptive to the roller, and the other end of the wear-resistant part extends to the outer end face along the corresponding groove wall and is positioned on the same circumferential surface with the side wall of the rotor body. By adopting the structure, the arc-shaped structure is beneficial to the rotation of the roller, when the rotor is just started, the roller rolls from one end of the wear-resistant part close to the central hole to the other end under the action of centrifugal force, and the friction is always generated between the roller and the wear-resistant part, so that the friction between the roller and the rotor is further avoided.

Preferably, the wear part is made of graphite. By adopting the structure, the graphite has small friction coefficient and high temperature resistance.

Preferably, the thickness of the rotor body is gradually reduced from the edge to the center, and an oblique angle of 150 degrees and less than 180 degrees is formed. By adopting the structure, the friction area between the end face of the rotor and the oil inlet plate and between the end face of the rotor and the oil outlet plate is reduced, the weight of the rotor is reduced, the rotational inertia of the rotor is reduced, the noise and the vibration are effectively reduced, and the efficiency is improved.

Preferably, the oblique angle α is 176 °. By adopting the structure, the strength of the rotor is ensured.

Preferably, the hole wall of the central hole is provided with a plurality of grooves which are uniformly distributed and axially run through. By adopting the structure, the friction area between the central hole wall of the rotor and the positioning column of the oil inlet plate is reduced, and the heat dissipation area is increased.

Preferably, a plurality of rotating shaft connecting holes matched with the rotating shaft connector are formed in the rotor body around the central hole. By adopting the structure, the rotor body is conveniently connected with the motor shaft of the rotor assembly through the rotating shaft connector by the rotating shaft connecting hole.

The utility model provides a roller pump, is provided with stator module, rotor subassembly and pump body subassembly including the oil feed lid subassembly, casing and the pump body lid subassembly that connect gradually in the intracavity that holds that above-mentioned three is constituteed, pump body subassembly includes oil inlet plate, oil outlet plate, roller and foretell rotor be provided with on the oil inlet plate with centre bore shaft hole complex reference column, the spindle of rotor subassembly passes through the connector and links to each other with rotor body to pass the reference column center.

The beneficial effects of the invention are: the roller pump rotor of the invention enables the roller to rub the wear-resistant part when rotating through embedding the wear-resistant part, thereby avoiding overlarge noise and vibration when in operation due to the direct rubbing of the roller and the rotor body, and simultaneously reducing power loss due to smaller friction coefficient and effectively improving efficiency.

The roller pump has the advantages of obvious noise and vibration improvement effect during operation, reduced power loss and obvious efficiency improvement, and meanwhile, the shaft is connected with the rotor body through the connector, so that the connection structure is stable and reliable, and the stress of the rotor is more uniform.

Drawings

FIG. 1 is a schematic structural view of a roller pump rotor;

FIG. 2 is a front view of a roller pump rotor;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a schematic view of a roller pump;

FIG. 5 is a left side view of FIG. 4;

fig. 6 is a cross-sectional view taken at B-B of fig. 5.

Detailed Description

The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:

as shown in fig. 1 to 3, a roller pump rotor is mainly composed of a rotor body 1 and a wear-resistant member 2.

As shown in fig. 1 to fig. 3, a central hole 101 and a plurality of roller grooves 102 which are uniformly distributed are formed in a rotor body 1, rotating shaft connecting holes 103 which are uniformly distributed in the circumferential direction are formed in the rotor body 1 between the central hole 101 and the roller grooves 102, the number of the rotating shaft connecting holes 103 is 5, the rotating shaft connecting holes 103 are kidney-shaped holes and are used for being matched with a five-claw connector, the central hole 101 is matched with a positioning column 801 shaft hole of an oil inlet plate 8 and used for positioning the rotor body 1, a plurality of grooves 101a which are uniformly distributed and axially communicated are formed in the hole wall of the central hole 101, the friction area between the hole wall of the central hole 101 of the rotor body 1 and the positioning column 801 of the oil inlet plate 8 is reduced, and meanwhile, the heat dissipation area is increased. In this embodiment, five roller grooves 102 are uniformly distributed on the rotor body 1 in the circumferential direction, a wear-resistant member 2 protruding from a groove wall and having a low friction coefficient is embedded in a groove wall on one side of the roller grooves 102, and the wear-resistant member 2 may be graphite, PEK, ceramic, or the like, preferably graphite. The wearing parts 2 is close to inside wall and the cell wall smooth transition of centre bore 101 one end, and constitute the arc structure that suits with roller 10 jointly, the other end is located same circumference along corresponding cell wall extension to terminal surface and rotor body 1's lateral wall, the arc structure does benefit to the rotation of roller 10, when the rotor just started, roller 10 rolls to the other end from wearing parts 2 one end that is close to centre bore 101 under the effect of centrifugal force, when rotor body 1 continuously rotates, roller 10 only takes place rolling friction with the one end that wearing parts 2 kept away from centre bore 101 all the time, roller 10 and rotor body 1 emergence friction have been avoided, effective noise reduction, vibration, and power loss is reduced.

Further, rotor body 1's thickness is attenuate from the edge to the center gradually, form 150 and be less than alpha < 180 oblique angle, rotor body 1 passes through mould integrated into one piece, in this embodiment, oblique angle alpha is 176, the intensity of rotor body 1 self has been guaranteed, the terminal surface and the oil inlet plate 8 that have effectively reduced rotor body 1 simultaneously, go out the friction area between the oil board 9, the weight of rotor self has been alleviateed, the inertia of rotor has also been reduced simultaneously, effective noise reduction, vibration, and the efficiency is improved.

The utility model provides a roller pump, is provided with stator module 6, rotor subassembly 7 and pump body subassembly including the oil feed lid subassembly 3, casing 4 and the pump body lid subassembly 5 that connect gradually in the intracavity that holds that above-mentioned three is constituteed, and pump body subassembly includes oil inlet plate 8, oil outlet plate 9, roller 10 and rotor, and this is prior art, does not do the repeated description here. In this embodiment, the above-mentioned roller pump rotor is selected for use as the rotor, be provided with on oil feed board 8 with centre bore 101 shaft hole complex reference column 801, the spindle of rotor subassembly 7 passes through the connector and links to each other with rotor body 1 to pass reference column 801 center, the connector is five claw connector, five claws of five claw connector pass corresponding pivot connecting hole 103, compare in that the spindle directly links to each other with rotor body 1 shaft hole, the mode of connecting through the connector makes rotor body 1 atress more even. The roller pump has the advantages of remarkable noise and vibration improvement effect during operation, reduced power loss and obvious efficiency improvement.

Claims

1. The utility model provides a roller pump, is provided with stator module (6), rotor subassembly (7) and pump body subassembly, its characterized in that including the oil feed lid subassembly (3), casing (4) and the pump body lid subassembly (5) that connect gradually in the intracavity that holds that above-mentioned three is constituteed: the pump body assembly comprises an oil inlet plate (8), an oil outlet plate (9), a roller (10) and a roller pump rotor, wherein a positioning column (801) matched with a shaft hole of the central hole (101) is arranged on the oil inlet plate (8), and a crankshaft of the rotor assembly (7) is connected with the rotor body (1) through a connector and penetrates through the center of the positioning column (801);

roller pump rotor includes rotor body (1), be provided with centre bore (101) on rotor body (1), there are a plurality of roller grooves (102), its characterized in that at the week side evenly distributed of rotor body (1): a wear-resistant part (2) which protrudes out of the groove wall and has a low friction coefficient is embedded in the groove wall on one side of the roller groove (102), and when the rotor body (1) rotates and drives the roller, rolling friction is generated between the wear-resistant part (2) and the roller; the thickness of the rotor body is gradually reduced from the edge to the center to form an oblique angle with alpha being more than or equal to 150 degrees and less than 180 degrees;

the inner side wall of one end of the wear-resistant part (2) close to the central hole (101) is in smooth transition with the groove wall, and jointly forms an arc-shaped structure adaptive to the roller, and the other end of the wear-resistant part extends to the outer end face along the corresponding groove wall and is positioned on the same circumferential surface with the side wall of the rotor body (1).

2. A roller pump as claimed in claim 1, wherein: the wear resistant part (2) is made of graphite.

3. A roller pump as claimed in claim 1, wherein: the oblique angle α is 176 °.

4. A roller pump as claimed in claim 1, wherein: the hole wall of the center hole (101) is provided with a plurality of grooves (101 a) which are uniformly distributed and axially communicated.

5. A roller pump as claimed in claim 1, wherein: and a plurality of rotating shaft connecting holes (103) matched with the connector are formed in the rotor body (1) around the central hole (101).