Bearing body component of double-suction centrifugal pump

Abstract

The utility model discloses a double-suction centrifugal pump bearing body component which comprises a bearing gland, a bearing and a bearing body, the bearing body is installed on a pump shaft, the bearing is installed on the bearing body, the bearing is sleeved on the pump shaft, a shaft sleeve is sleeved on the pump shaft, the bearing gland is sleeved on the shaft sleeve, the bearing gland is connected with the bearing body, and the bearing gland is connected with the bearing body. A notch is formed in the top of the outer wall of the bearing gland, an oil injection hole is formed in the bottom wall of the notch, and an oil injection nozzle is connected to the oil injection hole and located in the notch. According to the structure, the oil injection nozzle can be protected, and the oil injection nozzle is prevented from being damaged due to collision and bumping.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing bodies, in particular to a bearing body component of a double-suction centrifugal pump. Background Art

[0002] The current double-suction centrifugal pump bearing body components include connecting bolts, felt rings, oiling nozzles, bearing glands, bearings and bearing bodies. The bearing body is sleeved on the pump shaft, the bearing is installed on the bearing body, the bearing sleeve is mounted on the pump shaft, the pump shaft is sleeved with a shaft sleeve, the bearing gland is sleeved on the shaft sleeve, the bearing gland is connected to the bearing body through connecting bolts, the felt ring embedded in the inner wall of the bearing body is sleeved on the pump shaft, the felt ring embedded in the inner wall of the bearing gland is sleeved on the shaft sleeve, an oiling hole is opened on the top of the outer wall of the bearing gland, and an oiling nozzle is installed on the oiling hole. The oiling nozzle is installed on the outermost side just above the bearing gland, and there is no protective device around it. It is easily damaged by impact and knock during transportation and use, thereby affecting product quality; Utility Model Content

[0003] In view of the defects in the prior art, the utility model provides a double-suction centrifugal pump bearing body component. The structure can protect the oiling nozzle and prevent the oiling nozzle from being damaged by impact or collision.

[0004] A double-suction centrifugal pump bearing body component includes a bearing cover, a bearing and a bearing body, the bearing body is installed on the pump shaft, the bearing is installed on the bearing body, the bearing sleeve is arranged on the pump shaft, the pump shaft is sleeved with a shaft sleeve, the bearing cover is sleeved on the shaft sleeve, the bearing cover is connected to the bearing body, a notch is opened on the top of the outer wall of the bearing cover, an oil filling hole is opened on the bottom wall of the notch, an oil filling nozzle is connected to the oil filling hole, and the oil filling nozzle is located in the notch.

[0005] Preferably, a skeleton oil seal ring is embedded in the inner wall of the bearing body, the skeleton oil seal ring on the inner wall of the bearing body is sleeved on the pump shaft, and grease is added on the inner side of the skeleton oil seal ring.

[0006] Preferably, a skeleton oil seal ring is embedded in the inner wall of the bearing gland, the skeleton oil seal ring of the inner wall of the bearing gland is sleeved on the shaft sleeve, and grease is added to the inner side of the skeleton oil seal ring.

[0007] Preferably, the bearing gland is connected to the bearing body via connecting bolts.

[0008] Preferably, the notch depth is 12-15 mm.

[0009] Preferably, the bottom wall of the notch is an arc surface, and the bottom wall of the oil filling nozzle matches the bottom wall of the notch.

[0010] The beneficial effects of the utility model are embodied in that: in the technical scheme, through the cooperation of the bearing cover, the bearing and the bearing body, a notch is opened at the top of the outer wall of the bearing cover, an oil filling hole is opened on the bottom wall of the notch, an oil filling nozzle is connected to the oil filling hole, and the oil filling nozzle is located in the notch, so that the oil filling nozzle is protected and prevented from being damaged by impact or knock.

[0011] In this technical solution, the axial seals on both sides of the bearing are replaced by high-quality skeleton oil seals instead of felt rings. When assembling the oil seals, a proper amount of grease is added to the inside of the oil seals to ensure that the oil seals will not age or crack during operation. The use of skeleton oil seals has more reliable sealing and dust-proof effects than felt rings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the overall structure of a bearing body in the prior art.

[0015] In the attached drawings, 1-connecting bolts, 2-skeleton oil seal ring, 2'-felt ring, 3-oil filling nozzle, 4-bearing gland, 5-bearing, 6-bearing body, 7-pump shaft, 8-sleeve. DETAILED DESCRIPTION

[0016] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0017] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0018] Example 1

[0019] like Figure 1As shown, in this embodiment, a double-suction centrifugal pump bearing body component is provided, including a bearing cover 4, a bearing 5 and a bearing body 6, wherein the bearing body 6 is mounted on a pump shaft 7, the bearing 5 is mounted on the bearing body 6, the bearing 5 is sleeved on the pump shaft 7, the pump shaft 7 is sleeved with a shaft sleeve 8, the bearing cover 4 is sleeved on the shaft sleeve 8, the bearing cover 4 is connected to the bearing body 6, a notch is provided on the top of the outer wall of the bearing cover 4, an oil filling hole is provided on the bottom wall of the notch, an oil filling nozzle 3 is connected to the oil filling hole, and the oil filling nozzle 3 is located in the notch.

[0020] The current double suction centrifugal pump bearing body components are as follows Figure 2 As shown, it includes connecting bolts 1, felt rings 2', oiling nozzles 3, bearing glands 4, bearings 5 ​​and bearing bodies 6. The bearing body 6 is sleeved on the pump shaft 7, the bearing 5 is installed on the bearing body 6, the bearing 5 is sleeved on the pump shaft 7, the pump shaft 7 is sleeved with a shaft sleeve 8, the bearing gland 4 is sleeved on the shaft sleeve 8, the bearing gland 4 is connected to the bearing body 6 through the connecting bolts 1, the felt ring 2' embedded in the inner wall of the bearing body 6 is sleeved on the pump shaft 7, the felt ring 2' embedded in the inner wall of the bearing gland 4 is sleeved on the shaft sleeve 8, and an oiling hole is opened on the top of the outer wall of the bearing gland 4, and an oiling nozzle 3 is installed on the oiling hole. Each double-suction centrifugal pump has two bearing body components distributed on the left and right sides of the pump to support the rotor components. When the double-suction centrifugal pump is working, since the high-speed running bearing requires grease lubrication, an oil filling hole is set on the bearing gland 4, and lubricating oil is added into the bearing 5 through the oil filling nozzle 3 to lubricate the bearing 5. At the same time, two felt rings 2' are installed on the bearing gland 4 and the bearing body 6 for sealing and dust prevention. This bearing body component has two defects: 1. The oil filling nozzle 3 is installed on the outermost side just above the bearing gland 4, and there is no protective device around it. It is easy to be hit and bumped during transportation and use, which affects the product quality; 2. The axial seals on both sides of the bearing 5 use felt rings 2' made of wool felt. After long-term operation, the felt rings 2' will harden due to friction, heat and bonding, making it lose its sealing and dust-proof function. At this time, the liquefied grease in the bearing will flow out, resulting in an increase in the frequency of regular grease filling and an increase in the cost of use.

[0021] In this embodiment, the inner wall of the bearing body 6 is embedded with a skeleton oil seal ring 2 , and the skeleton oil seal ring 2 on the inner wall of the bearing body 6 is sleeved on the pump shaft 7 , and grease is added inside the skeleton oil seal ring 2 .

[0022] In this embodiment, the inner wall of the bearing cover 4 is embedded with a skeleton oil seal ring 2 , and the skeleton oil seal ring 2 of the inner wall of the bearing cover 4 is sleeved on the shaft sleeve 8 , and grease is added inside the skeleton oil seal ring 2 .

[0023] In this embodiment, the bearing cover 4 is connected to the bearing body 6 via connecting bolts 1 .

[0024] The notch depth in this embodiment is 12-15 mm.

[0025] In this embodiment, the bottom wall of the notch is an arc surface, and the bottom wall of the oil injection nozzle 3 matches the bottom wall of the notch.

[0026] In this embodiment, through the cooperation of the bearing cover 4, the bearing 5 and the bearing body 6, a notch is opened on the top of the outer wall of the bearing cover 4, an oil filling hole is opened on the bottom wall of the notch, and an oil filling nozzle 3 is connected to the oil filling hole. The oil filling nozzle 3 is located in the notch, so that the oil filling nozzle 3 is protected to prevent the oil filling nozzle 3 from being damaged by impact or knock.

[0027] In this embodiment, the axial seals on both sides of the bearing 5 are replaced by felt rings 2' with high-quality skeleton oil seal rings 2. When assembling the oil seal rings, a proper amount of grease is added to the inside of the oil seal rings to ensure that the oil seal rings will not age or crack during operation. The use of skeleton oil seal rings 2 has more reliable sealing and dustproof effects than felt rings 2'.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A double-suction centrifugal pump bearing body component, characterized in that: The invention comprises a bearing cover (4), a bearing (5) and a bearing body (6), wherein the bearing body (6) is mounted on a pump shaft (7), the bearing (5) is mounted on the bearing body (6), the bearing (5) is sleeved on the pump shaft (7), a shaft sleeve (8) is sleeved on the pump shaft (7), the bearing cover (4) is sleeved on the shaft sleeve (8), the bearing cover (4) is connected to the bearing body (6), a notch is formed at the top of the outer wall of the bearing cover (4), an oil injection hole is formed at the bottom wall of the notch, an oil injection nozzle (3) is connected to the oil injection hole, and the oil injection nozzle (3) is located in the notch.

2. A double-suction centrifugal pump bearing body component according to claim 1, characterized in that: The inner wall of the bearing body (6) is embedded with a skeleton oil seal ring (2), the skeleton oil seal ring (2) on the inner wall of the bearing body (6) is sleeved on the pump shaft (7), and lubricating grease is added to the inner side of the skeleton oil seal ring (2).

3. The double-suction centrifugal pump bearing body component according to claim 1, characterized in that: The inner wall of the bearing pressure cover (4) is embedded with a skeleton oil seal ring (2), the skeleton oil seal ring (2) on the inner wall of the bearing pressure cover (4) is sleeved on the shaft sleeve (8), and lubricating grease is added to the inner side of the skeleton oil seal ring (2).

4. A double-suction centrifugal pump bearing body component according to claim 1, characterized in that: The bearing cover (4) is connected to the bearing body (6) via connecting bolts (1).

5. The double-suction centrifugal pump bearing body component according to claim 1, characterized in that: The notch depth is 12-15 mm.

6. A double-suction centrifugal pump bearing body component according to claim 1, characterized in that: The bottom wall of the notch is a curved surface, and the bottom wall of the oil injection nozzle (3) matches the bottom wall of the notch.

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