Bearing lubricating and cooling structure of multi-stage pump

Abstract

The utility model relates to the technical field of bearings, and discloses a bearing lubricating and cooling structure of a multi-stage pump, which comprises a shaft, a pump body is movably connected to the outer side of the shaft, an inner ring is sleeved on the outer side of the shaft, an outer ring is arranged on the outer side of the inner ring, and a retainer is mounted between the outer ring and the inner ring. During use, a bearing of the multi-stage pump can generate friction heat during rotation, the temperature is too high, so that the bearing is damaged, operation of the multi-stage pump is stopped, the upper connecting rod and the lower connecting rod are manually pushed, and the movable plate slides left and right in the cavity, so that the bearing can be cooled, and the bearing can be cooled. The cooling coil is arranged on the left side of the outer ring and the left side of the inner cavity, cooling liquid is injected into the liquid inlet, passes through the cooling coil and then is discharged from the liquid outlet, so that the movable plate is cooled, the outer ring and the inner ring of the bearing are tightly attached to the movable plate, and then the bearing is cooled.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, and specifically relates to a bearing lubrication and cooling structure for a multistage pump. Background Art

[0002] A bearing is an important component in contemporary mechanical equipment. Its main function is to support a mechanical rotating body, reduce the friction coefficient during its movement, and ensure the rotational accuracy.

[0003] When the bearing of a multistage pump rotates, frictional heat will be generated. If this heat cannot be dissipated in time, it will cause the bearing temperature to rise. Excessive temperature will cause the bearing to be damaged. The existing bearings of multistage pumps do not have the function of active cooling. For example, natural cooling will reduce the use efficiency of the equipment.

[0004] Now, a bearing lubrication and cooling structure for a multistage pump is proposed to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a bearing lubrication and cooling structure for a multistage pump to solve the problem of lacking the function of active cooling proposed in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A bearing lubrication and cooling structure for a multistage pump, including a movable shaft. The outside of the movable shaft is movably connected with a pump body. An inner ring is sleeved on the outside of the movable shaft. An outer ring is arranged on the outside of the inner ring. A cage is installed between the outer ring and the inner ring. A plurality of movable bodies are movably connected inside the cage. A adjustable cooling structure is arranged on the left side of the outer ring;

[0007] The adjustable cooling structure includes a movable plate. The movable plate is arranged on the left side of the outer ring. A cavity is opened inside the pump body. Moving grooves are opened at the top and bottom ends of the cavity. A cooling coil is installed inside the movable plate. An inlet and an outlet are opened at the top end of the cooling coil. Two connecting rods are fixedly connected to the top and bottom ends of the movable plate.

[0008] Preferably, the cooling coil, the inlet and the outlet are internally connected and communicated. The contour of the movable plate matches the cavity. The movable plate can slide left and right inside the cavity. The two connecting rods are symmetrically arranged.

[0009] Preferably, the inner diameter of the inner ring matches the outer diameter of the movable shaft. The plurality of movable bodies are symmetrically arranged.

[0010] Preferably, a distribution chamber is opened inside the outer ring. A first oil inlet is opened at the top end of the distribution chamber. An oil outlet is opened at the bottom end of the distribution chamber. A plurality of second oil inlets are opened inside the inner side of the first oil inlet.

[0011] Preferably, multiple groups of the second oil inlets are evenly distributed inside the distribution bin, and the distribution bin, the first oil inlet, and the oil outlet are internally connected and communicated.

[0012] Preferably, first baffles are installed on both sides of the cage, first limiting grooves are formed on the inner side of the outer ring and the outer side of the inner ring, second limiting grooves are formed on the outer sides of the first limiting grooves, and second baffles are installed on the outer sides of the first baffles.

[0013] Preferably, the outer contour of the first baffle matches the first limiting groove, the first baffle can move inside the first limiting groove, the outer contour of the second baffle matches the second limiting groove, and the second baffle can move inside the second limiting groove.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The bearing lubrication and cooling structure of this multi-stage pump not only realizes the cooling of the bearing, but also realizes the uniform lubrication of the bearing, and also realizes that the lubricating fluid will not rotate at high speed to the outside, and the dust on the outside cannot enter between the inner ring and the outer ring;

[0015] (1) By providing a movable plate, a cooling coil, a liquid inlet, a liquid outlet, a connecting rod, a cavity and a movable groove, during use, when the bearing of the multi-stage pump rotates, frictional heat will be generated, and the bearing will be damaged due to excessive temperature. By stopping the operation of the multi-stage pump, manually push the upper and lower groups of connecting rods, and the movable plate slides left and right in the cavity to closely adhere to the left sides of the outer ring and the inner cavity. By injecting a coolant into the liquid inlet, after the coolant passes through the cooling coil, it is discharged from the liquid outlet, thereby realizing the cooling of the movable plate. The outer ring and the inner ring of the bearing are closely attached to the movable plate, thereby realizing the cooling of the bearing;

[0016] (2) By providing a distribution bin, a first oil inlet, an oil outlet and a second oil inlet, during use, directly injecting the lubricating fluid to the outside of the movable body may cause uneven distribution of the lubricating fluid. By providing a distribution bin inside the outer ring, injecting the lubricating fluid through the first oil inlet, after the lubricating fluid enters the distribution bin, the movable body is lubricated through multiple groups of second oil inlets, and the excess lubricating fluid flows out through the oil outlet, thereby realizing the uniform lubrication of the bearing;

[0017] (3) By providing a first limiting groove, a second limiting groove, a first baffle and a second baffle, during use, first limiting grooves and second limiting grooves are formed on the inner side of the outer ring and the outer side of the inner ring, the outer side of the cage is fixedly connected with a first baffle and a second baffle, the outer contour of the first baffle matches the first limiting groove, and the outer contour of the second baffle matches the second limiting groove. It not only realizes that the internal lubricating fluid will not rotate at high speed to the outside during rotation, but also realizes that the dust on the outside cannot enter between the inner ring and the outer ring, thereby prolonging the normal operation of the bearing. Description of the Drawings

[0018] Figure 1 This is the front elevation sectional structure diagram of the present utility model;

[0019] Figure 2 This is the top view structure diagram of the present utility model;

[0020] Figure 3 This is the Figure 1 Enlarged partial sectional structure diagram at position A in the present utility model;

[0021] Figure 4 This is the enlarged sectional structure diagram of the distribution bin of the present utility model;

[0022] Figure 5 This is the enlarged front elevation structure diagram of the second oil inlet of the present utility model.

[0023] In the figure: 1. movable shaft; 2. pump body; 3. outer ring; 4. inner ring; 5. cage; 6. movable body; 7. movable plate; 8. cooling coil; 9. liquid inlet; 10. liquid outlet; 11. connecting rod; 12. cavity; 13. movable groove; 14. distribution bin; 15. first oil inlet; 16. oil outlet; 17. second oil inlet; 18. first limiting groove; 19. second limiting groove; 20. first baffle; 21. second baffle. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1: Please refer to Figures 1-5 , a bearing lubrication and cooling structure of a multi-stage pump, including a movable shaft 1, the outside of the movable shaft 1 is movably connected with a pump body 2, the outside of the movable shaft 1 is sleeved with an inner ring 4, an outer ring 3 is arranged outside the inner ring 4, a cage 5 is installed between the outer ring 3 and the inner ring 4, a plurality of movable bodies 6 are movably connected inside the cage 5, and an adjustable cooling structure is arranged on the left side of the outer ring 3;

[0026] Please refer to Figures 1-5, A bearing lubrication and cooling structure of a multistage pump further includes an adjustable cooling structure. The adjustable cooling structure includes a movable plate 7. The movable plate 7 is arranged on the left side of the outer ring 3. A cavity 12 is provided inside the pump body 2. Activity slots 13 are provided at the top and bottom ends of the cavity 12. A cooling coil 8 is installed inside the movable plate 7. An inlet 9 and an outlet 10 are provided at the top end of the cooling coil 8. Two groups of connecting rods 11 are fixedly connected to the top and bottom ends of the movable plate 7;

[0027] The cooling coil 8, the inlet 9, and the outlet 10 are internally connected and communicated. The contour of the movable plate 7 matches that of the cavity 12. The movable plate 7 can slide left and right inside the cavity 12. The two groups of connecting rods 11 are symmetrically arranged. The inner diameter of the inner ring 4 matches the outer diameter of the movable shaft 1. Multiple groups of movable bodies 6 are symmetrically arranged;

[0028] Specifically, as Figure 1 , Figure 2 and Figure 3 shown, during use, when the bearing of the multistage pump rotates, frictional heat will be generated. If the temperature is too high, it will cause damage to the bearing. By stopping the operation of the multistage pump, manually push the upper and lower two groups of connecting rods 11. The movable plate 7 slides left and right inside the cavity 12, making it closely adhere to the left side of the outer ring 3 and the inner cavity. By injecting a coolant into the inlet 9, after the coolant passes through the cooling coil 8, it is discharged from the outlet 10, thereby realizing the cooling of the movable plate 7. The outer ring 3 and the inner ring 4 of the bearing are closely attached to the movable plate 7, thereby realizing the cooling of the bearing.

[0029] Embodiment 2: A distribution chamber 14 is provided inside the outer ring 3. A first oil inlet 15 is provided at the top end of the distribution chamber 14. An oil outlet 16 is provided at the bottom end of the distribution chamber 14. Multiple groups of second oil inlets 17 are provided inside the first oil inlet 15. The multiple groups of second oil inlets 17 are evenly distributed inside the distribution chamber 14. The distribution chamber 14, the first oil inlet 15, and the oil outlet 16 are internally connected and communicated;

[0030] Specifically, as Figure 1 , Figure 2 , Figure 4 and Figure 5 shown, during use, directly injecting lubricating fluid to the outside of the movable body 6 may cause uneven distribution of the lubricating fluid. By providing a distribution chamber 14 inside the outer ring 3 and injecting lubricating fluid through the first oil inlet 15, after the lubricating fluid enters the distribution chamber 14, the movable body 6 is lubricated through the multiple groups of second oil inlets 17, and the excess lubricating fluid flows out through the oil outlet 16, thereby realizing the uniform lubrication of the bearing.

[0031] Embodiment 3: First baffles 20 are installed on both sides of the cage 5. First limiting grooves 18 are provided on the inner side of the outer ring 3 and the outer side of the inner ring 4. Second limiting grooves 19 are provided on the outer sides of the first limiting grooves 18. Second baffles 21 are installed on the outer sides of the first baffles 20. The outer contours of the first baffles 20 match the first limiting grooves 18, and the first baffles 20 can move inside the first limiting grooves 18. The outer contours of the second baffles 21 match the second limiting grooves 19, and the second baffles 21 can move inside the second limiting grooves 19;

[0032] Specifically, as Figure 1 and Figure 4 shown, during use, first limiting grooves 18 and second limiting grooves 19 are provided on the inner side of the outer ring 3 and the outer side of the inner ring 4. First baffles 20 and second baffles 21 are fixedly connected to the outer side of the cage 5. The outer contours of the first baffles 20 match the first limiting grooves 18, and the outer contours of the second baffles 21 match the second limiting grooves 19. This not only prevents the internal lubricating fluid from rotating at high speed to the outside during rotation but also prevents dust on the outside from entering between the inner ring 4 and the outer ring 3, thereby prolonging the normal operation of the bearing.

[0033] Working principle: When the present utility model is in use, first, when the bearing of the multi-stage pump rotates, frictional heat will be generated. If the temperature is too high, it will cause damage to the bearing. By stopping the operation of the multi-stage pump and manually pushing the upper and lower groups of connecting rods 11, the movable plate 7 slides left and right in the cavity 12 to closely adhere to the left side of the outer ring 3 and the inner cavity. By injecting cooling liquid into the liquid inlet 9, after the cooling liquid passes through the cooling coil 8, it is discharged from the liquid outlet 10, thereby cooling the movable plate 7. The outer ring 3 and the inner ring 4 of the bearing are closely attached to the movable plate 7, thereby cooling the bearing. Secondly, directly injecting lubricating fluid to the outside of the movable body 6 may cause uneven distribution of the lubricating fluid. By providing a distribution chamber 14 inside the outer ring 3 and injecting lubricating fluid through the first oil inlet 15, after the lubricating fluid enters the distribution chamber 14, the movable body 6 is lubricated through multiple second oil inlets 17, and the excess lubricating fluid flows out through the oil outlet 16, thereby achieving uniform lubrication of the bearing. At the same time, first limiting grooves 18 and second limiting grooves 19 are provided on the inner side of the outer ring 3 and the outer side of the inner ring 4. First baffles 20 and second baffles 21 are fixedly connected to the outer side of the cage 5. The outer contours of the first baffles 20 match the first limiting grooves 18, and the outer contours of the second baffles 21 match the second limiting grooves 19. This not only prevents the internal lubricating fluid from rotating at high speed to the outside during rotation but also prevents dust on the outside from entering between the inner ring 4 and the outer ring 3, thereby prolonging the normal operation of the bearing.

[0034] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A bearing lubrication and cooling structure for a multistage pump, comprising a movable shaft (1), characterized in that: A pump body (2) is movably connected to the outside of the movable shaft (1). An inner ring (4) is sleeved on the outside of the movable shaft (1). An outer ring (3) is arranged on the outside of the inner ring (4). A cage (5) is installed between the outer ring (3) and the inner ring (4). A plurality of movable bodies (6) are movably connected inside the cage (5). An adjustable cooling structure is arranged on the left side of the outer ring (3); The adjustable cooling structure includes a movable plate (7). The movable plate (7) is arranged on the left side of the outer ring (3). A cavity (12) is formed inside the pump body (2). Moving grooves (13) are formed at the top and bottom ends of the cavity (12). A cooling coil (8) is installed inside the movable plate (7). An inlet (9) and an outlet (10) are formed at the top end of the cooling coil (8). Two connecting rods (11) are fixedly connected to the top and bottom ends of the movable plate (7).

2. The bearing lubrication and cooling structure of a multi-stage pump according to claim 1, characterized in that: The cooling coil (8), the inlet (9) and the outlet (10) are internally connected and communicated. The profile of the movable plate (7) matches that of the cavity (12). The movable plate (7) can slide left and right inside the cavity (12). The two moving grooves (13) are symmetrically arranged.

3. The bearing lubrication and cooling structure of a multistage pump according to claim 1, characterized in that: The inner diameter of the inner ring (4) matches the outer diameter of the movable shaft (1). The plurality of movable bodies (6) are symmetrically arranged.

4. The bearing lubrication and cooling structure of a multi-stage pump according to claim 1, characterized in that: A distribution chamber (14) is formed inside the outer ring (3). A first oil inlet (15) is formed at the top end of the distribution chamber (14). An oil outlet (16) is formed at the bottom end of the distribution chamber (14). A plurality of second oil inlets (17) are formed inside the first oil inlet (15).

5. The bearing lubrication and cooling structure of a multi-stage pump according to claim 4, characterized in that: The plurality of second oil inlets (17) are evenly distributed inside the distribution chamber (14). The distribution chamber (14), the first oil inlet (15) and the oil outlet (16) are internally connected and communicated.

6. The bearing lubrication and cooling structure of a multi-stage pump according to claim 1, characterized in that: First baffles (20) are installed on both sides of the cage (5). First limiting grooves (18) are formed on the inner side of the outer ring (3) and the outer side of the inner ring (4). Second limiting grooves (19) are formed on the outside of the first limiting grooves (18). Second baffles (21) are installed on the outside of the first baffles (20).

7. The bearing lubrication and cooling structure of a multistage pump according to claim 6, characterized in that: The outer profile of the first baffle (20) matches that of the first limiting groove (18). The first baffle (20) can move inside the first limiting groove (18). The outer profile of the second baffle (21) matches that of the second limiting groove (19). The second baffle (21) can move inside the second limiting groove (19).

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