Axial flow pump and thin oil lubrication structure thereof
By designing a thin oil storage chamber, an oil sealing cylinder, and a bearing pad, efficient circulation of lubricating oil is achieved, solving the problems of large lubricating oil consumption and poor oil temperature cooling in axial flow pumps, and improving bearing performance and pump operation stability.
Patent Information
- Application Number
- CN202422964250.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-02
AI Technical Summary
The existing bearing lubrication method of axial flow pumps requires a large amount of thin oil and the oil temperature is not properly cooled, which affects the operation of the pump.
The structure employs a thin oil storage chamber, an oil sealing cylinder, and a bearing pad fitted onto the bearing surface. Through the design of oil drain holes and oil seepage chambers, the lubricating oil circulates under centrifugal force, achieving efficient utilization of thin oil and rapid cooling.
Reduce frictional resistance, decrease lubricant usage, extend bearing life, improve bearing performance, and make pump operation more reliable and stable.
Smart Images
Figure CN223594500U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to lubricating technical field especially relates to a axial flow pump and its thin oil lubrication structure. BACKGROUND
[0002] The axial flow pump is the pump that the blade of rotating vane wheel produces the force to liquid and makes liquid transport along the axial direction. The lubrication condition of bearing in its transmission structure directly influences the operation condition of pump, so the bearing needs to have good lubrication condition. The existing technology adopts the immersion lubrication of control oil surface, the above-mentioned mode can ensure that the gap between bearings has enough lubricant, but needs to use a large amount of lubricating thin oil, and the oil temperature cooling is not smooth. SUMMARY
[0003] The utility model discloses a kind of axial flow pump and its thin oil lubrication structure, its lubrication effect is good, the amount of rareness needed is less, and oil temperature can be rapidly reduced.
[0004] To solve the above problems, the utility model provides a thin oil lubrication structure of axial flow pump, including thin oil storage cavity, oil sealing cylinder and bearing pad that is sleeved on the surface of bearing,
[0005] One end of the bearing pad is in the thin oil storage cavity, the other end passes through the top of the thin oil storage cavity and extends outward;The bearing pad is sleeved with a ball bearing on the top side close to the thin oil storage cavity, and is sleeved with a thrust bearing on the bottom side close to the thin oil storage cavity;The oil sealing cylinder is arranged between the bearing pad and the bearing, and an oil seepage cavity is formed between the outer wall of the oil sealing cylinder and the inner wall of the bearing pad.
[0006] An oil discharge hole is arranged on the bearing pad, and the axial direction of the oil discharge hole is inclined to the ball bearing. The oil discharge hole, the oil seepage cavity and the thin oil storage cavity are connected with each other.
[0007] As an improvement of the above technical solution, a bearing cover and a bearing box are also provided.
[0008] The bearing pad, the ball bearing and the thrust bearing are arranged in the bearing box, the bearing cover is sleeved on the bearing pad, and the top of the bearing box is fixedly connected with the bearing cover. The oil sealing cylinder is fixedly connected to the opening at the bottom of the bearing box, the cylinder body of the oil sealing cylinder extends into the bearing box and is located between the bearing pad and the bearing. The bearing cover, the bearing box and the oil sealing cylinder form the thin oil storage cavity.
[0009] As an improvement of the above technical solution, the center of the bearing cover, the bearing box, the oil sealing cylinder and the bearing pad is coaxially arranged.
[0010] As the improvement of the above technical scheme, the gap between the bearing pad and the bearing cover is provided with a felt ring, the gap between the bearing cover and the bearing box is provided with a first sealing ring, and the gap between the bearing box and the oil sealing cylinder is provided with a second sealing ring.
[0011] As the improvement of the above technical scheme, the angle between the setting axis direction of the oil discharge hole and the surface of the oil sealing cylinder is 45-60 degrees.
[0012] Correspondingly, the utility model still provides a kind of axial flow pump, including the oil dilution lubrication structure of the above technical scheme.
[0013] As the improvement of the above technical scheme, the part of bearing in bearing pad is provided with a key.
[0014] As the improvement of the above technical scheme, the sidewall of oil dilution storage cavity is provided with an oil mark.
[0015] The utility model has the following beneficial effects:
[0016] The oil dilution lubrication structure of the utility model, including oil dilution storage cavity, oil sealing cylinder and the bearing pad of setting in the surface of bearing, bearing pad with the bearing between oil sealing cylinder is formed oil permeation cavity between the outer wall of oil sealing cylinder and the inner wall of bearing pad.Oil dilution storage cavity in lubricating oil can extend into oil permeation cavity, and bearing pad is provided with oil discharge hole, and the setting axis direction of oil discharge hole is inclined to ball bearing.When bearing rotates, it drives bearing pad to rotate together, and the lubricating oil permeated into oil discharge hole is shot to ball bearing under centrifugal action, and the lubricating oil dropped by ball bearing returns to oil dilution storage cavity, and continues to soak lubrication to thrust bearing.Lower friction resistance, reduce wear and tear and reduce the use amount of lubricating oil, improve the bearing performance, prolong the service life of bearing.Make pump run more reliably and stably. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the sectional view of the oil dilution lubrication structure of the embodiment of the utility model. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the utility model will be further described in detail in conjunction with the drawings.
[0019] The embodiment of the utility model provides an oil dilution lubrication structure of axial flow pump, including oil dilution storage cavity 1, oil sealing cylinder 2 and bearing pad 3 of setting in the surface of bearing 31.
[0020] The embodiment of the utility model improves the flow structure of lubricating oil, so that it can circulate between ball bearing, oil dilution storage cavity and thrust bearing, and reduce the use amount of lubricating oil.
[0021] Specifically, one end of the bearing pad 3 is arranged in the thin oil storage cavity 1, and the other end extends outward through the top of the thin oil storage cavity 1; the bearing pad 3 is sleeved with a ball bearing 4 on the side close to the top of the thin oil storage cavity 1 and is sleeved with a thrust bearing 5 on the side close to the bottom of the thin oil storage cavity 1; the bearing pad 3 is provided with the oil sealing cylinder 2 between the bearing pad 3 and the bearing 31, and an oil permeation cavity 6 is formed between the outer wall of the oil sealing cylinder 2 and the inner wall of the bearing pad 3.
[0022] The bearing pad 3 is provided with an oil discharge hole 32, the axial direction of the oil discharge hole 32 is inclined to the ball bearing 4, and the oil discharge hole 32, the oil permeation cavity 6 and the thin oil storage cavity 1 are communicated with each other.
[0023] The thin oil lubricating structure of the utility model, including thin oil storage cavity 1, oil sealing cylinder 2 and bearing pad 3 of the bearing 31 surface sleeve, bearing pad 3 with the bearing 31 between being equipped with oil sealing cylinder 2, the outer wall of oil sealing cylinder 2 and the inner wall of bearing pad form oil permeation cavity 6. The lubricating oil in the thin oil storage cavity 1 can extend into the oil permeation cavity 6, and the bearing pad 3 is provided with an oil discharge hole 32, the axial direction of the oil discharge hole 32 is inclined to the ball bearing 4. When the bearing 31 rotates, the bearing pad 3 is driven to rotate, and the lubricating oil permeated into the oil discharge hole 32 is shot to the ball bearing 4 under the centrifugal action, and the lubricating oil dropped from the ball bearing 4 returns to the thin oil storage cavity 1, and continues to soak the thrust bearing 5. Reduce the frictional resistance, reduce the abrasion and reduce the use amount of lubricating oil, improve the bearing performance, prolong the service life of bearing. Let the pump run more reliably and stably.
[0024] Preferably, it also includes a bearing cover 7 and a bearing box 8.
[0025] The bearing pad 3, the ball bearing 4 and the thrust bearing 5 are arranged in the bearing box 8, the bearing cover 7 is sleeved on the bearing pad 3, and the top of the bearing box 8 is fixedly connected; the bottom opening of the bearing box 8 is fixedly connected with the oil sealing cylinder 2, the cylinder body of the oil sealing cylinder 2 extends into the bearing box 8 and is located between the bearing pad 3 and the bearing 31, and the bearing cover 7, the bearing box 8 and the oil sealing cylinder 2 form the thin oil storage cavity 1.
[0026] The bearing cover 7 and the bearing box 8 are assembled, and the components such as the oil sealing cylinder 2, the bearing pad 3, the ball bearing 4 and the thrust bearing 5 are installed in the thin oil storage cavity 1, so as to provide installation space for each component.
[0027] It should be noted that the top and bottom of the bearing box 8 are provided with threaded holes, the bearing cover 7 is fixedly connected with the bearing box 8 through the first bolt 91, and the oil sealing cylinder 2 is fixedly connected with the bearing box 8 through the second bolt 92.
[0028] Preferably, the bearing cover 7, the bearing box 8, the oil sealing cylinder 2 and the bearing pad 3 are coaxially arranged at the center.
[0029] Preferably, a felt ring 33 is arranged at the gap between the bearing pad 3 and the bearing cover 7, a first sealing ring 81 is arranged at the gap between the bearing cover 7 and the bearing box 8, and a second sealing ring 82 is arranged at the gap between the bearing box 8 and the oil sealing cylinder 2. The felt ring 33, the first sealing ring 81 and the second sealing ring 82 jointly seal the thin-oil storage cavity 1 to prevent the lubricating oil from leaking.
[0030] Preferably, the angle between the setting axial direction of the oil discharge hole 32 and the surface of the oil sealing cylinder 2 is 45°-60°.
[0031] The utility model embodiment further provides a kind of axial flow pump, it is characterized in that, including above-mentioned the thin-oil lubrication structure.
[0032] Preferably, the part of the bearing 31 in the bearing pad 3 is provided with a flat key 34. The flat key 34 is used to cooperate with the bearing pad 3 to transmit the power of the rotating shaft.
[0033] Preferably, the sidewall of the thin-oil storage cavity 1 is provided with an oil mark 83.
[0034] The above is the preferred embodiment of the utility model, it should be pointed out, for the ordinary skilled person in the prior art, without departing from the principles of the utility model, can make a number of improvements and refinements, these improvements and refinements also be considered as the protection scope of the utility model.
Claims
1. A thin oil lubrication structure for an axial flow pump, characterized in that, It includes a thin oil storage chamber, an oil sealing cylinder, and a bearing pad fitted onto the bearing surface; One end of the bearing pad is located inside the thin oil storage cavity, and the other end passes through the top of the thin oil storage cavity and extends outward; a ball bearing is fitted on the top side of the bearing pad near the thin oil storage cavity, and a thrust bearing is fitted on the bottom side of the bearing pad near the thin oil storage cavity; an oil sealing cylinder is provided between the bearing pad and the bearing, and an oil seepage cavity is formed between the outer wall of the oil sealing cylinder and the inner wall of the bearing pad. The bearing pad is provided with an oil drain hole, which is inclined axially toward the ball bearing. The oil drain hole, the oil seepage chamber and the thin oil storage chamber are interconnected.
2. The thin oil lubrication structure as described in claim 1, characterized in that, It also includes the bearing cover and bearing housing; The bearing pad, ball bearing, and thrust bearing are disposed inside the bearing housing. The bearing cover is fitted onto the bearing pad and is fixedly connected to the top of the bearing housing. The oil sealing cylinder is fixedly connected to the bottom opening of the bearing housing. The cylinder of the oil sealing cylinder extends into the bearing housing and is located between the bearing pad and the bearing. The bearing cover, bearing housing, and oil sealing cylinder form the thin oil storage cavity.
3. The thin oil lubrication structure as described in claim 2, characterized in that, The bearing cover, bearing housing, oil sealing cylinder, and bearing pad are arranged coaxially.
4. The thin oil lubrication structure as described in claim 2, characterized in that, A felt ring is provided at the gap between the bearing pad and the bearing cover, a first sealing ring is provided at the gap between the bearing cover and the bearing housing, and a second sealing ring is provided at the gap between the bearing housing and the oil sealing cylinder.
5. The thin oil lubrication structure as described in claim 1, characterized in that, The axial angle between the oil drain hole and the surface of the oil sealing cylinder is 45°-60°.
6. An axial flow pump, characterized in that, Includes the thin oil lubrication structure as described in any one of claims 1-5.
7. The axial flow pump as described in claim 6, characterized in that, The portion of the bearing located within the bearing pad is provided with a flat key.
8. The axial flow pump as described in claim 6, characterized in that, The side wall of the thin oil storage chamber is equipped with an oil level indicator.