CN223868219U - Split type oil lubrication bearing box structure - Google Patents

Abstract

The utility model discloses a split type oil lubrication bearing box structure, which belongs to the field of oil lubrication bearing boxes and comprises a left cavity and a right cavity, wherein through holes for mounting a pump shaft are formed in the left cavity and the right cavity, flanges are welded on opposite surfaces of the left cavity and the right cavity, a bracket matched with a bearing on the pump shaft is welded on one flange, the two flanges are in sealing fit and fixed through bolts, and a heat exchanger is further arranged in the right cavity. According to the utility model, through optimizing lubrication and cooling and structural design, the bearing temperature rise can be obviously reduced, the maintenance is convenient, and the production cost is low.

Description

Split type oil lubrication bearing box structure

Technical Field

The utility model belongs to the field of oil lubrication bearing boxes, and particularly relates to a split oil lubrication bearing box structure.

Background

At present, bearings of the multistage pump generally adopt a grease lubrication mode, but under the working condition of a vane type spiral mixed delivery pump with high rotating speed (such as more than 3000 rpm), grease lubrication is easy to cause grease failure due to friction temperature rise, and bearing abrasion and even locking are caused. In order to solve the problems, the existing vane type spiral mixed transportation pump mainly adopts an integrally cast bearing box, but the mode still has the following defects of 1, low heat dissipation efficiency, low heat conduction between an oil cavity and a bearing installation area, 2, inconvenient maintenance, time consumption and influence on sealability when the integral box body is disassembled and assembled, 3, high cost, complex casting process, long production period and difficulty in adapting to customized requirements, and 4, lack of integrated bearing temperature and vibration monitoring interfaces.

Aiming at the difficult problem of bearing lubrication of a high-rotation-speed mixed transmission pump, the split oil lubrication bearing box structure capable of remarkably reducing the temperature rise of the bearing and convenient to maintain is urgently needed,

Disclosure of utility model

The utility model aims to provide a split oil lubrication bearing box structure, which can obviously reduce bearing temperature rise through optimizing lubrication and cooling and structural design, and is convenient to maintain and low in production cost.

The split type oil lubrication bearing box structure comprises a left cavity and a right cavity, through holes for mounting pump shafts are formed in the left cavity and the right cavity, flange plates are welded on opposite faces of the left cavity and the right cavity, a bracket matched with a bearing on the pump shaft is welded on one flange plate, the two flange plates are in sealing fit and fixed through bolts, and a heat exchanger is further mounted in the right cavity.

Furthermore, the bracket is cylindrical, a positioning step matched with the bearing on the pump shaft is formed in the inner wall of one end of the bracket, and a compression ring capable of compressing the bearing on the pump shaft is further arranged at the extending end of the bracket.

Further, a cover plate is further arranged at the other end of the bracket, and a through hole for the pump shaft to penetrate through is formed in the left cavity and is located on the cover plate.

Further, the bracket is also provided with an oil hole penetrating radially.

Further, an observation window is arranged on the left cavity.

Further, a temperature measuring hole for installing a temperature sensor is formed in the bracket, and the temperature measuring hole corresponds to a bearing on the pump shaft.

Further, the left cavity or the right cavity is also provided with a mounting hole for mounting the vibration sensor.

Further, an oil inlet and an oil outlet are arranged on the right cavity.

Further, a sealing ring is further arranged between the joint surfaces of the two flanges.

Furthermore, the left cavity and the right cavity are formed by welding.

The beneficial effects of the utility model are as follows:

1. According to the utility model, the heat exchanger is arranged in the right cavity, the heat exchanger is used for cooling lubricating oil in the right cavity and the left cavity, so that the fluidity and the heat dissipation efficiency of the oil can be effectively improved, and the actual measurement shows that the working temperature of the bearing can be reduced by more than 40% by adopting the bearing box structure provided by the utility model, and the oil carbonization and the bearing failure caused by high temperature are avoided.

2. According to the utility model, the bearing box is formed by the right cavity and the left cavity, so that the bearing box is in a split design, the oil cavity can be quickly cleaned without integral disassembly when the bearing box needs to be cleaned, the maintenance time is shortened by more than 30%, and the shutdown loss is reduced.

3. Compared with the prior casting forming gearbox, the bearing box provided by the utility model has the advantages that the weight of the bearing box can be reduced by 15% -20% and the energy consumption can be reduced, meanwhile, the design of the left cavity and the right cavity is adopted, the consumption of lubricating oil can be reduced, the recyclable steel plate material is matched, and the green manufacturing concept is met.

4. According to the utility model, the temperature measuring hole and the mounting hole are arranged, so that the temperature sensor can be arranged in the temperature measuring hole for monitoring the temperature of the bearing in real time when the bearing box is used, and the vibration sensor can be arranged in the mounting hole for monitoring the vibration condition of the bearing box in real time, thereby early warning abnormal temperature rise and mechanical vibration, avoiding sudden faults and prolonging the service life of equipment.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model.

Fig. 1 is a block diagram of a split oil lubricated bearing housing structure.

The reference numerals and corresponding part names in the drawings:

1. A left cavity body, 2, a right cavity body, 3, a sealing ring, 4, a heat exchanger, 5 and a bracket, 6, a compression ring, 7, a cover plate, 8, a bearing, 9, a pump shaft, 10 and a vibration sensor;

101. Mounting holes, 102 and flanges;

201. the oil inlet, 202 and the oil outlet;

501. temperature measuring holes 502, positioning steps 503 and oil holes.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the substances, and not restrictive of the utility model. It should be further noted that, for convenience of description, only the portions related to the present utility model are shown in the drawings.

In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision. The present utility model will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, the split type oil lubrication bearing box structure provided by the utility model comprises a left cavity 1 and a right cavity 2, wherein through holes are formed in the left cavity 1 and the right cavity 2, the through holes in the left cavity 1 and the through holes in the right cavity 2 are coaxially arranged, a pump shaft 9 simultaneously penetrates through the through holes in the left cavity 1 and the through holes in the right cavity 2 during installation, and after the pump shaft 9 is installed, the outer end of the pump shaft 9 is in rotary sealing fit with the right cavity 2, so that lubricating oil is prevented from leaking through a gap between the pump shaft 9 and the right cavity 2. The flange 102 is arranged on the opposite surfaces of the left cavity 1 and the right cavity 2, the flange 102 is fixed on the left cavity 1 and the right cavity 2 in a welding mode, when the left cavity 1 and the right cavity 2 are required to be jointly closed to form a bearing 8 box, the flange 102 on the left cavity 1 is attached to the flange 102 on the right cavity 2, and the attached two flanges 102 are fixed by bolts.

In order to support the rotation of the pump shaft 9, a bracket 5 is welded on the left cavity 1, the inner wall of the bracket 5 fixes the outer ring of the bearing 8 on the pump shaft 9, the outer ring of the bearing 8 is fixed through the bracket 5, and the pump shaft 9 is in rotary sealing fit through the right cavity 2, so that the rotation of the pump shaft 9 is supported, and the stability of the pump shaft 9 in the rotation process is guaranteed.

The right cavity 2 is internally provided with the heat exchanger 4, the heat exchanger 4 cools the lubricating oil in the bearing 8 box, so that the lubricating oil can take away the heat generated by friction of the rotating shaft and the bearing 8 when lubricating the rotating shaft, the phenomenon that the lubricating oil is invalid due to friction heating of the rotating shaft and the bearing 8 in the rotating process is avoided, and the lubricating effect of the rotating shaft is ensured.

In the utility model, the heat exchanger 4 is a heat exchange tube arranged in the right cavity 2 in a spiral or serpentine detour mode, and the inlet end of the heat exchange tube and the outlet end of the heat exchange tube extend outwards through the right cavity 2 and are connected with an external pipeline through a pipeline system.

In the utility model, in order to better fix the outer end of the bearing 8, the bracket 5 is cylindrical, the central axis of the bracket 5, the center of the through hole on the left cavity 1 and the center of the through hole on the right cavity 2 are on the same straight line, and the outer ring of the bearing 8 is fixed on the inner circular surface of the bracket 5. In order to avoid axial displacement of the bearing 8 on the pump shaft 9, the inner wall of the bracket 5 is further provided with a positioning step 502, so that the inner wall of the bracket 5 is in a step shape, when the bearing 8 on the pump shaft 9 is installed, the outer ring of the bearing 8 is in one end with a larger inner diameter of the bracket 5, one side of the outer ring of the bearing 8 is abutted against the positioning step 502, and meanwhile, in order to abutted against the other side of the outer ring of the bearing 8, one end, far away from the left cavity 1, of the bracket 5 is provided with a compression ring 6 for compressing the outer ring of the bearing 8, and the compression ring 6 is fixed with the bracket 5 through bolts.

In the utility model, when two bearings 8 are arranged on the pump shaft 9, the two bearings 8 are abutted against the pump shaft 9, at this time, the outer ring outer side of one bearing 8 is abutted against the positioning step 502, and the outer ring outer side of the other bearing 8 is abutted against the compression ring 6. Here, the outer side of the outer ring of the bearing 8 refers to a side surface of the outer ring of the bearing 8 away from the outer ring of the other bearing 8, that is, when the two bearings 8 are abutted, the side where the outer rings of the two bearings 8 are abutted against each other is an inner side surface of the outer ring of the bearing 8, and the other side surface of the outer ring of the two bearings 8 is an outer side surface of the outer ring of the bearing 8.

In the utility model, a cover plate 7 is also arranged at one end of the bracket 5 far away from the bearing 8, the cover plate 7 is fixed on the bracket 5 by bolts, namely, the cover plate 7 and the compression ring 6 are respectively positioned at two ends of the bracket 5, and at the moment, a through hole for the pump shaft 9 to penetrate through is positioned on the cover plate 7 on the left cavity 1.

In the utility model, after the bearing 8 on the pump shaft 9 is installed, the bearing 8 box is divided into two independent chambers by the joint cooperation of the bearing 8 on the pump shaft 9 and the bracket 5, in order to ensure the lubricating effect and the cooling effect of lubricating oil on the bearing 8, the bracket 5 is also provided with an oil hole 503 penetrating radially, the oil hole 503 can communicate the space inside the bracket 5 with the space outside the bracket 5, and meanwhile, in order to ensure the communication of the two chambers inside the bearing 8 box, the position of the oil hole 503 on the bracket 5 is staggered with the bearing 8.

In the utility model, in order to facilitate observation of the condition of lubricating oil in the bearing 8 box, an observation window is further arranged on the left cavity 1, the observation window is installed on the left cavity 1 in an embedded mode, and the observation window or the left cavity 1 is marked with a lowest oil level line and a highest oil level line.

In the utility model, in order to facilitate the real-time detection of the temperature of the bearing 8 when the bearing 8 box is used, the bracket 5 is also provided with the temperature measuring hole 501, the position of the temperature measuring hole 501 corresponds to the position of the bearing 8, and the temperature measuring hole 501 is used for installing a temperature sensor for detecting the temperature of the bearing 8, and the temperature of the bearing 8 is monitored in real time through the temperature sensor, so that a worker can find out in time when the bearing 8 is abnormally warmed up, and sudden faults are avoided. Of course, the staff can determine whether to install the temperature sensor in the temperature measuring hole 501 according to the use requirement, and when the temperature sensor is not installed in the temperature measuring hole 501, the temperature measuring hole 501 will not affect the lubrication effect of the bearing 8 and the lubricating oil on the bearing 8.

In the utility model, in order to facilitate monitoring of abnormal vibration of the bearing 8 box, the left cavity body 1 is also provided with the mounting hole 101 for mounting the vibration sensor 10, the mounting hole 101 is a countersunk hole and does not penetrate through the inside of the left cavity body 1, and the vibration sensor 10 mounted in the mounting hole 101 can detect the mechanical vibration condition of the bearing 8 box in real time, so that a worker can timely find the bearing 8 box when abnormal vibration occurs, and sudden faults are avoided. Of course, the worker can determine whether or not to install the vibration sensor 10 in the installation hole 101 according to the use requirement, and when the vibration sensor 10 is not installed in the installation hole 101, the installation hole 101 does not affect the sealability of the case of the bearing 8.

In the utility model, in order to facilitate the replenishment of lubricating oil in the bearing 8 box, an oil inlet 201 communicated with the inside of the right cavity 2 is also arranged on the right cavity 2, and in order to facilitate the replacement of lubricating oil in the bearing 8 box, an oil outlet 202 communicated with the inside of the right cavity 2 is also arranged on the right cavity 2.

In the utility model, in order to ensure the tightness of the bearing 8 box, a sealing ring 3 is also arranged between the joint surfaces of the two flanges 102, the sealing ring 3 is an O-shaped sealing ring 3, when the two flanges 102 are closely jointed, the sealing ring 3 is gradually flattened, the sealing ring 3 is respectively and hermetically jointed with the two flanges 102, the gap between the two flanges 102 is sealed, and the leakage of lubricating oil in the bearing 8 box from the gap between the two flanges 102 is avoided.

In the utility model, the left cavity body 1 and the right cavity body 2 are formed by welding after being cut by steel plate laser, and the welding line is subjected to stress relief annealing treatment, so that the traditional casting process is replaced, and the processing period and the material cost are reduced.

In the utility model, the bracket 5 can be welded and fixed on the right cavity 2, at this time, the pressing ring 6 can be fixed only at one end of the bracket 5 close to the left cavity 1, and one end of the bracket 5 close to the right cavity 2 is open, that is, the bracket 5 can be provided with no cover plate 7, meanwhile, the mounting hole 101 can be opened on the right cavity 2, the observation window can be arranged on the left cavity 1, and the heat exchanger 4 can be mounted in the left cavity 1. That is, in the present utility model, the welding positions of the observation window, the heat exchanger 4, and the bracket 5 can be adjusted according to the actual situation.

When the heat exchanger is used, the pump shaft 9 penetrates through the through hole in the cover plate 7 and the bracket 5, then the bearing 8 is mounted on the pump shaft 9, the outer ring of the bearing 8 is clamped at one end with the smaller inner diameter of the bracket 5, the compression ring 6 is fixed on the bracket 5 by adopting bolts, two sides of the outer ring of the bearing 8 are respectively abutted against the positioning step 502 and the compression ring 6, then the temperature sensor is mounted in the temperature measuring hole 501, the heat exchanger 4 is mounted in the right cavity 2, the flange 102 on the left cavity 1 is fixed with the flange 102 on the right cavity 2 by adopting bolts after the outer end of the pump shaft 9 is mounted on the left cavity 1, and finally the vibration sensor 10 is mounted in the mounting hole 101.

The oil inlet 503 is used for injecting lubricating oil into the bearing 8 box, the liquid level of the lubricating oil in the bearing 8 box is observed through the observation window in the process of injecting the lubricating oil, then the oil inlet 201 is closed, the heat exchanger 4 is started when the pump shaft 9 rotates, the heat exchanger 4 cools the lubricating oil in the bearing 8 box, and the lubricating oil cools the bearing 8 while lubricating the bearing 8.

When the lubricating oil in the bearing 8 box needs to be replaced, the oil inlet 201 and the oil outlet 202 are opened, the lubricating oil in the bearing 8 box is discharged through the oil outlet 202, when the lubricating oil in the bearing 8 box is completely discharged, the oil outlet 202 is blocked, and new lubricating oil is injected into the bearing 8 box through inlet oil.

It will be appreciated by persons skilled in the art that the above embodiments are merely for clarity of illustration of the utility model and are not intended to limit the scope of the utility model. Other variations or modifications will be apparent to persons skilled in the art from the foregoing disclosure, and such variations or modifications are intended to be within the scope of the present utility model.

Claims (10)

1. The split type oil lubrication bearing box structure is characterized by comprising a left cavity (1) and a right cavity (2), wherein through holes for mounting a pump shaft (9) are formed in the left cavity (1) and the right cavity (2), flange plates (102) are welded on opposite surfaces of the left cavity (1) and the right cavity (2), a bracket (5) matched with a bearing (8) on the pump shaft (9) is welded on one flange plate (102), the two flange plates (102) are in sealing fit and fixed through bolts, and a heat exchanger (4) is further mounted in the right cavity (2).

2. The split oil lubrication bearing box structure according to claim 1, wherein the bracket (5) is cylindrical, a positioning step (502) matched with the bearing (8) on the pump shaft (9) is formed in the inner wall of one end of the bracket (5), and a compression ring (6) capable of compressing the bearing (8) on the pump shaft (9) is further mounted at the extending end of the bracket (5).

3. The split oil lubrication bearing box structure according to claim 1 or 2, wherein a cover plate (7) is further installed at the other end of the bracket (5), and a through hole for the pump shaft (9) to penetrate through is located on the cover plate (7) in the left cavity (1).

4. The split oil lubrication bearing housing structure according to claim 1, wherein the bracket (5) is further provided with an oil hole (503) penetrating radially.

5. The split oil lubrication bearing housing structure according to claim 1, wherein an observation window is provided on the left cavity (1).

6. The split oil lubrication bearing box structure according to claim 1 or 2, wherein the bracket (5) is further provided with a temperature measuring hole (501) for installing a temperature sensor, and the temperature measuring hole (501) corresponds to the bearing (8) on the pump shaft (9).

7. The split oil lubrication bearing housing structure according to claim 1 or 2, wherein the left cavity (1) or the right cavity (2) is further provided with a mounting hole (101) for mounting the vibration sensor (10).

8. The split oil lubrication bearing housing structure according to claim 1, wherein the right cavity (2) is provided with an oil inlet (201) and an oil outlet (202).

9. The split oil-lubricated bearing housing structure according to claim 1, wherein a sealing ring (3) is further installed between the abutting surfaces of the two flanges.

10. The split oil lubrication bearing box structure according to claim 1, wherein the left cavity (1) and the right cavity (2) are formed by welding.