Viscosity oil pump and non-pre-lubrication bearing

Abstract

The utility model relates to the technical field of non-pre-lubrication bearings, in particular to a viscosity oil pump applied to a non-pre-lubrication bearing, which comprises a ring body, an involute groove is arranged on the inner circle side of the ring body, an oil cavity communicated with the involute groove is arranged at the bottom of the ring body, and an oil baffle is arranged inside the oil cavity. The oil baffle divides the oil cavity into a first cavity and a second cavity, first oil holes are formed in the two sides of the first cavity, second oil holes are formed in the two sides of the second cavity, and a limiting block is arranged at the top of the outer circle side of the ring body. Therefore, the non-pre-lubricating function can be achieved, meanwhile, potential safety hazards such as jamming and uneven oil quantity and oil pressure are avoided, and the bearing runs more safely and reliably.

Description

Technical Field

[0001] The utility model relates to the technical field of non-pre-lubricated bearings, in particular to a viscosity oil pump and a non-pre-lubricated bearing. Background Art

[0002] Whether it is a thermal power plant or a nuclear power plant, it is very necessary for the pump to be put into operation immediately after receiving the start signal. Especially in nuclear power plants, many pumps are dedicated safety facilities and can be started directly without the bearing pre-lubrication process, which is a requirement for nuclear safety.

[0003] As for oil-lubricated sliding bearings, traditional non-pre-lubricated bearings are generally self-lubricating solutions with oil slingers. This lubrication method is widely used in ordinary light-load multi-stage pumps, but because the oil slinger operates in an irregular motion, it has always caused safety hazards, such as oil ring jamming, uneven oil volume and oil pressure, etc. Utility Model Content

[0004] In view of this, the utility model provides a viscosity oil pump and a non-pre-lubricated bearing, which can achieve the non-pre-lubricated function while avoiding safety hazards such as jamming, uneven oil volume and oil pressure, making the bearing operation safer and more reliable.

[0005] An embodiment of the first aspect of the utility model provides a viscosity oil pump applied to non-pre-lubricated bearings, including a ring body, an involute groove is opened on the inner circle side of the ring body, an oil cavity connected to the involute groove is arranged at the bottom of the ring body, an oil baffle is arranged inside the oil cavity, the oil baffle divides the oil cavity into a first chamber and a second chamber, first oil holes are opened on both sides of the first chamber, second oil holes are opened on both sides of the second chamber, and a limit block is arranged on the top of the outer circle side of the ring body.

[0006] Furthermore, the viscosity oil pump also includes support blocks, which are arranged on both sides of the inner circle of the ring body, the support blocks are located inside the involute groove, and the support blocks are connected to the ring body through pins.

[0007] Furthermore, the viscosity oil pump also includes a groove, which is opened on both sides of the inner circle of the ring body, and the groove is arranged adjacent to the support block.

[0008] Furthermore, the viscosity oil pump also includes a sealing gasket, which is arranged above the oil baffle.

[0009] Furthermore, the viscosity oil pump also includes an exhaust hole, which is arranged on the ring body and is adjacent to the limit block.

[0010] An embodiment of the second aspect of the utility model provides a non-pre-lubricated bearing, including a bearing shell, a bearing body and a viscosity oil pump as provided in the embodiment of the first aspect, wherein the bearing body is installed inside the bearing shell, a thrust plate is arranged on the bearing body, a limiting groove is arranged on the inner top of the bearing shell, and the viscosity oil pump is slidably fitted on the outer circle side of the thrust plate so that the limiting block is located inside the limiting groove.

[0011] The beneficial effects of the technical solution provided by the embodiment of the utility model include at least: a viscosity oil pump applied to a non-pre-lubricated bearing, comprising a ring body, an involute groove is provided on the inner circumference of the ring body, an oil cavity connected to the involute groove is provided at the bottom of the ring body, an oil baffle is provided inside the oil cavity, the oil baffle divides the oil cavity into a first cavity and a second cavity, a first oil hole is provided on both sides of the first cavity, a second oil hole is provided on both sides of the second cavity, and a limit block is provided on the top of the outer circumference of the ring body. Thus, while realizing the non-pre-lubricated function, it can avoid safety hazards such as jamming, uneven oil volume and oil pressure, and make the bearing operation safer and more reliable.

[0012] Among them, by setting the support block, it can be ensured that the ring body and the thrust plate maintain a concentric position during the operation of the pump group, avoiding safety hazards such as jamming; at the same time, an oil film can be formed between the support block and the thrust plate to support the ring body, so that the ring body will not rotate at a large angle following the thrust plate.

[0013] Among them, by setting the groove, on the one hand, the support block is easy to install, and on the other hand, the groove can retain a small amount of lubricating oil after the pump unit is started for the first time, so that when the pump unit is started again without pre-lubrication, an oil film can be quickly formed between the support block and the thrust plate.

[0014] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Various other advantages and benefits will become apparent to those skilled in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only used for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used throughout the accompanying drawings to represent the same components. Among them:

[0016] Figure 1 A schematic structural diagram of a viscosity oil pump provided by an embodiment of the first aspect of the utility model is shown;

[0017] Figure 2 Shows Figure 1 A schematic cross-sectional view of the viscosity oil pump of the illustrated embodiment;

[0018] Figure 3 A schematic cross-sectional structure diagram of a non-pre-lubricated bearing provided in an embodiment of the second aspect of the utility model is shown.

[0019] in, Figures 1 to 3 The corresponding relationship between the reference numerals and the component names is as follows:

[0020] 1 ring body, 2 involute groove, 3 oil baffle, 4 first chamber, 5 second chamber, 6 first oil hole, 7 second oil hole, 8 limit block, 9 support block, 10 pin, 11 groove, 12 sealing gasket, 13 exhaust hole, 14 thrust plate. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0023] Refer to the following Figures 1 to 3 A viscosity oil pump and a non-pre-lubricated bearing are described according to some embodiments of the utility model.

[0024] like Figure 1 to Figure 2 As shown, according to the embodiment of the first aspect of the utility model, a viscosity oil pump for non-pre-lubricated bearings is provided, comprising a ring body 1, the inner circumference of the ring body 1 is provided with an involute groove 2 for introducing lubricating oil into the flow channel; the bottom of the ring body 1 is provided with an oil cavity connected to the involute groove 2 for temporarily storing lubricating oil flowing into and out of the involute groove 2; the inside of the oil cavity is provided with an oil baffle 3, the oil baffle 3 divides the oil cavity into a first chamber 4 and a second chamber 5, the first chamber 4 is provided with a first oil hole 6 on both sides, and the second chamber 5 is provided with a second oil hole 7 on both sides, which are used as the inlet and outlet of lubricating oil; a limit block 8 is provided at the top of the outer circumference of the ring body 1 for limiting the rotation of the ring body 1. In this way, while realizing the function of non-pre-lubricating, safety hazards such as jamming, uneven oil quantity and oil pressure can be avoided, making the bearing operation safer and more reliable.

[0025] Specifically, when the ring body 1 rotates in a specific direction following the thrust plate 14 of the non-pre-lubricated bearing, the lubricating oil is sucked into the first chamber 4 through the first oil hole 6 under the action of pressure, and flows along the involute groove 2 for one circle; in the process of the lubricating oil flowing along the involute groove 2, it can enter the flow channel to achieve rapid lubrication of the non-pre-lubricated bearing; when the lubricating oil reaches the second chamber 5, the flow rate reaches the maximum, and then it is discharged from the second chamber 5 through the second oil hole 7. Among them, the lubricating oil discharged from the second chamber 5 can be connected to a preset lubrication channel, so that the remaining lubricating oil can be used to lubricate other bearings and equipment.

[0026] It can be understood that the first chamber 4 and the second chamber 5 are symmetrical structures, so that the ring body 1 can also rotate in the opposite direction following the non-pre-lubricated bearing. At this time, the lubricating oil is sucked into the second chamber 5 through the second oil hole 7, flows around the involute groove 2 for one circle, and then enters the first chamber 4, and is discharged from the first chamber 4 through the first oil hole 6. When the non-pre-lubricated bearing changes its rotation direction, there is no need to adjust the viscosity oil pump, which simplifies the operating steps.

[0027] In order to ensure that the ring body 1 can form a self-priming viscous pump when rotating, thereby driving the lubricating oil to flow along the involute groove 2, the involute groove 2 needs to be set as a shallower groove 11, so that when the ring body 1 is installed on the thrust plate 14, a narrow gap is formed between the ring body 1 and the thrust plate 14.

[0028] The oil baffle 3 can prevent the lubricating oil from flowing between the first chamber 4 and the second chamber 5 without passing through the involute groove 2, thereby ensuring that the lubricating oil can enter the flow channel when flowing through the involute groove 2, and play a lubricating role for the non-pre-lubricated bearing.

[0029] Among them, the limit block 8 can limit the ring body 1, so that the ring body 1 can only rotate within a certain angle range, and will no longer continue to rotate with the thrust plate 14 after reaching the limit position, thereby avoiding safety hazards such as the ring body 1 getting stuck.

[0030] In some possible embodiments, when the pump speed is 3000r / min, the lubricating oil brand is VG46, the temperature is 40°C, and the pressure is 0.02MPa, the lubricating oil flow rate generated by the viscosity oil pump can reach 55L / min, and the bearing's non-pre-lubrication process can be completed in just a few seconds. It has a fast response speed, strong oil pumping capacity, and stable lubricating oil output.

[0031] like Figure 1 to Figure 2 As shown, the viscosity oil pump also includes support blocks 9, which are arranged on both sides of the inner circle of the ring body 1. The support blocks 9 are located inside the involute groove 2, which can ensure that the ring body 1 and the thrust plate 14 maintain a concentric position during the operation of the pump group to avoid safety hazards such as jamming; the support blocks 9 are connected to the ring body 1 by pins 10, which can prevent the support blocks 9 from rotating or moving.

[0032] Specifically, when the thrust plate 14 rotates, a very thin oil film can be formed between the support block 9 and the thrust plate 14, and the oil film supports the ring body 1, so that the ring body 1 will not rotate at a large angle following the thrust plate 14, thereby allowing the lubricating oil to enter the flow channel from the first oil hole 6 or the second oil hole 7 along the involute groove 2.

[0033] It is understandable that the specific shape of the support block 9 is not limited here, and the cross-section may be a rectangular, trapezoidal, etc. Preferably, the cross-section of the support block 9 is a trapezoid.

[0034] like Figure 1 to Figure 2 As shown, the viscosity oil pump also includes a groove 11, which is opened on both sides of the inner circle of the ring body 1. The groove 11 is arranged adjacent to the support block 9. On the one hand, it makes the support block 9 easy to install. On the other hand, the groove 11 can retain a small amount of lubricating oil after the pump group is started for the first time, so that when the pump group is started again without pre-lubrication, an oil film can be quickly formed between the support block 9 and the thrust plate 14.

[0035] like Figure 2 As shown, the viscosity oil pump further includes a sealing gasket 12 , which is disposed above the oil baffle 3 , so that a sealing state is maintained between the first chamber 4 and the second chamber 5 .

[0036] like Figure 2 As shown, the viscosity oil pump also includes an exhaust hole 13, which is arranged on the ring body 1. The exhaust hole 13 is arranged adjacent to the limit block 8, so that when the lubricating oil enters the gap between the thrust plate 14 and the ring body 1, the air inside the gap can be discharged through the exhaust hole 13, thereby balancing the pressure and ensuring that the lubricating oil can smoothly enter the involute groove 2.

[0037] like Figure 3 As shown, a non-pre-lubricated bearing provided according to an embodiment of the second aspect of the utility model comprises a bearing housing, a bearing body and a viscosity oil pump provided as in the embodiment of the first aspect, the bearing body is installed inside the bearing housing, a thrust plate 14 is provided on the bearing body, a limiting groove is provided on the inner top of the bearing housing, and the viscosity oil pump is slidably matched with the outer circumference of the thrust plate 14 so that the limiting block 8 is located inside the limiting groove to achieve the limiting effect on the viscosity oil pump. In this way, while achieving the non-pre-lubricated function, it is possible to avoid safety hazards such as jamming, uneven oil volume and oil pressure, and make the bearing operation safer and more reliable.

[0038] Among them, there are two types of clearance fits between the viscosity oil pump and the thrust plate 14. The support block 9 has a very small clearance fit, which can increase the supporting effect of the oil film on the viscosity oil pump, so that the viscosity oil pump has good follow-up and sealing properties; the main body of the ring body 1 has a larger clearance fit, which can facilitate the installation of the viscosity oil pump and ensure that the viscosity oil pump generates sufficient oil inlet pressure when the pump group is running.

[0039] Among them, the thrust plate 14 is a component of the pump group itself. The thrust plate 14 is driven to rotate by the bearing body, and the thrust plate 14 drives the viscosity oil pump to rotate without adding other components to drive the viscosity oil pump, so that the structural design of the non-pre-lubricated bearing is simple, compact and cost-saving.

[0040] In the description of the present invention, the term "plurality" refers to two or more than two. Unless otherwise clearly defined, the terms "upper" and "lower" indicate positions or positional relationships based on the drawings, which are only for the convenience of describing the present invention and simplifying the description, and 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 therefore cannot be understood as a limitation on the present invention. The terms "connection", "installation", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the description of the present invention, the terms "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A viscosity oil pump, applied to non-pre-lubricated bearings, characterized in that: include: A ring body (1), wherein an involute groove (2) is provided on the inner circumference side of the ring body (1), an oil cavity connected to the involute groove (2) is provided at the bottom of the ring body (1), an oil baffle (3) is provided inside the oil cavity, and the oil baffle (3) divides the oil cavity into a first chamber (4) and a second chamber (5), first oil holes (6) are provided on both sides of the first chamber (4), and second oil holes (7) are provided on both sides of the second chamber (5), and a limit block (8) is provided on the top of the outer circumference side of the ring body (1).

2. The viscosity oil pump according to claim 1, characterized in that: Also includes: A support block (9), wherein the support block (9) is arranged on both sides of the inner circle of the ring body (1), the support block (9) is located inside the involute groove (2), and the support block (9) is connected to the ring body (1) via a pin (10).

3. The viscosity oil pump according to claim 2, characterized in that: Also includes: A groove (11), wherein the groove (11) is opened on both sides of the inner circle of the ring body (1), and the groove (11) is arranged adjacent to the support block (9).

4. The viscosity oil pump according to claim 1, characterized in that: Also includes: A sealing gasket (12), wherein the sealing gasket (12) is arranged above the oil baffle (3).

5. The viscosity oil pump according to claim 1, characterized in that: Also includes: An exhaust hole (13), wherein the exhaust hole (13) is arranged on the ring body (1), and the exhaust hole (13) is arranged adjacent to the limiting block (8).

6. A non-pre-lubricated bearing, characterized in that: include: Bearing housing; Bearing body; as well as According to the viscosity oil pump as described in any one of claims 1 to 5, the bearing body is installed inside the bearing shell, a thrust plate (14) is provided on the bearing body, a limiting groove is provided on the inner top of the bearing shell, and the viscosity oil pump is slidably fitted on the outer circumference of the thrust plate (14) so ​​that the limiting block (8) is located inside the limiting groove.

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