A detachable submersible pump

Abstract

The utility model relates to the field of submersible pump especially relates to a detachable submersible pump. Including the casing is provided with the main shaft through the casing, the bearing body is fixed in the casing interior, the bearing body is connected with the main shaft through the bearing rotation, the inner wall of bearing body forms first step, first step and the first end portion on bearing outer ring abut, the end portion of cooperation bearing body detachable bearing gland is established, one end of bearing gland is structured as the compression end, the compression end and the second end portion on bearing outer ring abut, the position of bearing relative bearing body is limited. The application bearing gland and bearing body are detachable connection, and through the first step on bearing body cooperation bearing gland carries out the positioning to bearing, makes through the dismantling bearing gland to realize the replacement to bearing.

Description

Technical Field

[0001] This utility model relates to the field of submersible pumps, and in particular to a detachable submersible pump. Background Technology

[0002] In the present technology, submersible pumps require radial restraint of the part of the main shaft located underwater by means of bushings or bearings.

[0003] When the spindle length is short, the space for bearing installation is small, which makes it impossible to accommodate multiple sets of bearings. Under the operating conditions of a submersible pump, a single set of bearings is more prone to wear, so it needs to be replaced frequently.

[0004] The bearing housings and sealing elements adapted for long spindles to support multiple sets of bearings are usually tightly fitted and difficult to disassemble. When applied to submersible pumps with short spindles, they result in cumbersome maintenance and high costs. Utility Model Content

[0005] The purpose of this invention is to provide a detachable submersible pump to solve the problem of difficult disassembly and assembly during maintenance of existing submersible pumps.

[0006] The technical solution of this utility model is: a detachable submersible pump, including a housing, a main shaft through the housing, a bearing body fixed inside the housing, and the bearing body and the main shaft being rotatably connected by a bearing; The inner wall of the bearing body has a first step, which abuts against a first end on the outer ring of the bearing; a bearing cover is detachably provided at the end of the bearing body, one end of which is configured as a pressing end, which abuts against a second end on the outer ring of the bearing, thereby defining the position of the bearing relative to the bearing body.

[0007] Preferably, a first sealing part and a second sealing part are respectively provided in two directions along the axial direction of the bearing; the bearing is placed in a closed area formed by the bearing cover, the bearing body, the main shaft, the first sealing part, and the second sealing part.

[0008] Preferably, the bearing cap includes a mounting end arranged radially, and a fastener is provided through the mounting end for connection to the end of the bearing body.

[0009] Preferably, the first sealing part includes a bushing sleeved on the outer wall of the main shaft, the outer wall of the bushing sleeve is provided with a first sealing groove and a first sealing ring is provided therein, and the bearing cap abuts against the first sealing ring near the inner wall of the bushing sleeve. The second sealing part includes an oil seal mechanism.

[0010] Preferably, the oil seal mechanism includes an oil seal body, and a second sealing groove is formed on the inner wall of the oil seal body around its own axis, and multiple second sealing grooves are formed along the axial direction; a third sealing groove is formed on the outer wall of the oil seal body that abuts against the bearing chamber.

[0011] Preferably, the second sealing part includes a dynamic and static ring mechanism, which includes a dynamic ring and a static ring that are configured to cooperate with each other. The static ring is fixed to the oil seal body. The dynamic ring can abut against the end face of the static ring. The dynamic ring rotates with the main shaft. The inner wall of the dynamic ring is provided with a fourth sealing groove corresponding to the main shaft.

[0012] Preferably, a thrust mechanism is provided in conjunction with the moving ring. The thrust mechanism includes a thrust seat, which is fixed to the outer wall of the main shaft and located at the end of the moving ring away from the stationary ring. An elastic element is provided in conjunction with the thrust seat, and the end of the elastic element away from the thrust seat abuts against the moving ring, so that the stationary ring and the moving ring are in contact or tend to be in contact.

[0013] Compared with the prior art, the advantages of this utility model are: This application detachably connects the bearing cap to the bearing body, and uses a first step on the bearing body to position the bearing in conjunction with the bearing cap, allowing the bearing to be replaced by removing the bearing cap. This eliminates the need to disassemble the entire pump body to replace the bearing, as is required with traditional submersible pumps. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a structural diagram of a detachable submersible pump according to the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 Enlarged view at point B in the middle; Figure 4 This is a cross-sectional view of the bearing body described in this utility model; The components are as follows: 1. Housing, 2. Main shaft, 3. Impeller, 4. Bearing body, 41. First step, 5. Bearing, 6. Bearing cover, 61. Pressing end, 62. Mounting end, 7. First sealing part, 71. Bushing, 72. First sealing groove, 8. Second sealing part, 81. Oil seal mechanism, 811. Oil seal body, 812. Second sealing groove, 813. Third sealing groove, 82. Dynamic and static ring mechanism, 821. Dynamic ring, 822. Static ring, 823. Fourth sealing groove, 83. Thrust mechanism, 831. Thrust seat, 832. Elastic element. Detailed Implementation

[0015] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more, unless otherwise expressly defined.

[0016] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0017] The present invention will be further described in detail below with reference to specific embodiments: like Figure 1-3 As shown, a detachable submersible pump includes a housing 1, through which a main shaft 2 is disposed. One end of the main shaft 2 is connected to an impeller 3, and the other end is connected to a drive device to realize the pump body function.

[0018] Combination Figure 4 As shown, a bearing body 4 is fixed inside the housing 1, and the bearing body 4 is rotatably connected to the main shaft 2 via a bearing 5. A first step 41 is formed on the inner wall of the bearing body 4, and the first step 41 abuts against the first end of the outer ring of the bearing 5. A bearing cover 6 is detachably provided at the end of the bearing body 4, and one end of the bearing cover 6 is constructed as a pressing end 61, which abuts against the second end of the outer ring of the bearing 5, so that the two ends of the outer ring of the bearing 5 are respectively abutted and fixed by the first step 41 and the pressing end 61, thereby limiting the position of the bearing 5 relative to the bearing body 4.

[0019] In this embodiment, there is one bearing 5. The bearing cover 6 has a mounting end 62 arranged radially perpendicular to the pressing end 61, and a fastener is provided that can pass through the mounting end 62. After passing through the mounting end 62, the fastener is threaded to the end of the bearing body 4 near the bearing cover 6, thereby detachably fixing the bearing cover 6 to the bearing body 4.

[0020] In order to seal the bearing 5, a first sealing part 7 and a second sealing part 8 are respectively provided in two directions along the axial direction of the bearing 5, so that the bearing 5 is placed in the closed area formed by the bearing cover 6, the bearing body 4, the main shaft 2, the first sealing part 7 and the second sealing part 8.

[0021] The first sealing part 7 includes a bushing 71 sleeved on the outer wall of the main shaft 2. The outer wall of the bushing 71 has a first sealing groove 72 and a first sealing ring. The bearing cover 6 abuts against the first sealing ring near the inner wall of the bushing 71, thereby sealing the top space of the bearing 5.

[0022] The second sealing part 8 includes an oil seal mechanism 81, which includes an oil seal body 811. The inner wall of the oil seal body 811 has a second sealing groove 812 formed around its own axis. Multiple second sealing grooves 812 are formed along the axial direction, and these multiple second sealing grooves 812 form a labyrinth seal structure with the outer wall of the main shaft 2. Furthermore, the outer wall of the oil seal body 811 has a third sealing groove 813 formed around its own axis corresponding to the bearing 5 chamber. Through the labyrinth seal mechanism formed by multiple second sealing grooves 812 and the third sealing grooves 813, the bottom space of the bearing 5 is sealed.

[0023] To better seal the bottom space of the bearing 5, the second sealing part 8 also includes a dynamic and static ring mechanism 82. The dynamic and static rings 822 include a dynamic ring 821 and a static ring 822 that are fitted together. The static ring 822 is fixed to the oil seal body 811, and the dynamic ring 821 can slide against the end face of the static ring 822. The inner wall of the dynamic ring 821 is in contact with the main shaft 2 and has a fourth sealing groove 823.

[0024] Furthermore, in order to ensure that the moving ring 821 can still abut against the stationary ring 822 when the spindle 2 rotates at high speed, a thrust mechanism 83 is provided in conjunction with the moving ring 821. The thrust mechanism 83 includes a thrust seat 831, which is fixed to the outer wall of the spindle 2 and located at the end of the moving ring 821 away from the stationary ring 822. An elastic element 832 is provided in conjunction with the thrust seat 831. The end of the elastic element 832 away from the thrust seat 831 abuts against the moving ring 821, so that the stationary ring 822 and the moving ring 821 are in contact or have a tendency to be in contact.

[0025] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A detachable submersible pump, characterized in that, Includes a housing (1), a main shaft (2) is provided through the housing (1), a bearing body (4) is fixed inside the housing (1), and the bearing body (4) and the main shaft (2) are rotatably connected by a bearing (5); The inner wall of the bearing body (4) has a first step (41) formed therein, and the first step (41) abuts against the first end on the outer ring of the bearing (5); a bearing cover (6) is detachably provided at the end of the bearing body (4), and one end of the bearing cover (6) is constructed as a pressing end (61), and the pressing end (61) abuts against the second end on the outer ring of the bearing (5), thereby limiting the position of the bearing (5) relative to the bearing body (4).

2. The detachable submersible pump according to claim 1, characterized in that, The bearing cap (6) includes a mounting end (62) arranged radially, through which a fastener is provided for connection to the end of the bearing body (4).

3. A detachable submersible pump according to claim 2, characterized in that, The bearing (5) is provided with a first sealing part (7) and a second sealing part (8) in two directions along the axial direction; the bearing (5) is placed in a closed area formed by the bearing cover (6), the bearing body (4), the main shaft (2), the first sealing part (7), and the second sealing part (8).

4. A detachable submersible pump according to claim 3, characterized in that: The first sealing part (7) includes a bushing (71) sleeved on the outer wall of the main shaft (2). The outer wall of the bushing (71) is provided with a first sealing groove (72) and a first sealing ring is provided in cooperation. The bearing cap (6) is close to the inner wall of the bushing (71) and abuts against the first sealing ring. The second sealing part (8) includes an oil seal mechanism (81).

5. A detachable submersible pump according to claim 4, characterized in that, The oil seal mechanism (81) includes an oil seal body (811), and a second sealing groove (812) is provided on the inner wall of the oil seal body (811) around its own axis. Multiple second sealing grooves (812) are provided along the axial direction. A third sealing groove (813) is provided on the outer wall of the oil seal body (811) that abuts against the bearing (5) chamber.

6. A detachable submersible pump according to claim 5, characterized in that, The second sealing part (8) includes a dynamic and static ring mechanism (82), which includes a dynamic ring (821) and a static ring (822) that are configured to cooperate. The static ring (822) is fixed to the oil seal body (811). The dynamic ring (821) can abut against the end face of the static ring (822). The dynamic ring (821) rotates with the main shaft (2). The inner wall of the dynamic ring (821) is provided with a fourth sealing groove (823) corresponding to the main shaft (2).

7. A detachable submersible pump according to claim 6, characterized in that, A thrust mechanism (83) is provided in conjunction with the moving ring (821). The thrust mechanism (83) includes a thrust seat (831). The thrust seat (831) is fixed to the outer wall of the main shaft (2) and located at the end of the moving ring (821) away from the stationary ring (822). An elastic element (832) is provided in conjunction with the thrust seat (831). The end of the elastic element (832) away from the thrust seat (831) abuts against the moving ring (821), so that the stationary ring (822) and the moving ring (821) are in contact or have a tendency to be in contact.

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