Novel sector block for thrust bearing of submersible pump

Abstract

The utility model relates to a new sector block for a thrust bearing of an immersion pump, a working surface and a supporting surface are connected through a middle rib and a side rib, the middle rib is located at the center of the working surface and the supporting surface, and the side rib is symmetrically arranged on both sides of the working surface and the supporting surface. The utility model's working surface, supporting surface, middle rib and side rib form an elastic system, under the action of working pressure, the sector block can produce slight deformation, the heights of the sector blocks in the same thrust bearing are consistent, the working surface of the sector block can be ensured to be planar, and the effective bearing area will not be reduced; a hollow heat dissipation channel is formed in the middle of the working surface, the supporting surface, the middle rib and the side rib, which can effectively reduce the temperature of the working surface; meanwhile, the supporting ball is located at the center of the supporting surface and opposite to the middle rib, so that a lubricating water film can be formed between the sector block and the sliding plate of the water pump in forward and reverse rotation, and the problem of thrust bearing failure due to reverse rotation of the pump shaft is eliminated.

Description

Technical Field

[0001] This utility model belongs to the technical field of submersible pump accessories, specifically relating to a novel sector-shaped block for submersible pump thrust bearings. Background Technology

[0002] The sector block is a crucial component in submersible pumps, particularly affecting the thrust bearing's load-bearing capacity, thus influencing the pump's energy consumption, head, and failure rate. Existing sector blocks come in various structural forms, including flat plate types (…). Figure 1 ), irregular block type ( Figure 2 ) and improved ( Figure 3 These sector blocks failed to adequately resolve the conflict between load-bearing capacity and heat dissipation. To improve load-bearing capacity, their support points were all configured in an off-center manner, which required the submersible pump to rotate in the correct direction. If the rotation was reversed, the thrust bearing would quickly fail. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a new type of sector block for thrust bearings of submersible pumps.

[0004] The technical problem solved by this utility model is achieved through the following technical solution:

[0005] A novel sector-shaped block for a submersible pump thrust bearing is arranged at intervals and floatingly mounted on a bracket. The upper end of the sector-shaped block is sequentially mounted with a sliding plate and a thrust plate and connected to the submersible pump rotor shaft. It includes a working surface, a supporting surface, a central rib, and side ribs, all integrally cast. The working surface and the supporting surface are connected by the central rib and the side ribs. The central rib is located at the center of the working surface and the supporting surface. The side ribs are symmetrically arranged on both sides of the working surface and the supporting surface. The working surface, the supporting surface, the central rib, and the side ribs form an elastic system. A hollow heat dissipation channel is formed in the middle of the working surface, the supporting surface, the central rib, and the side ribs.

[0006] Furthermore, the support surface is provided with an outer protrusion and an inner protrusion at its upper and lower ends, respectively.

[0007] Furthermore, a support ball is provided at the center of the support surface, and the support ball is opposite to the central rib.

[0008] Furthermore, the thickness of the central rib is 4~6mm, and the central rib transitions to the working surface and the supporting surface via an R4 arc; the thickness of the working surface is 2.5~8mm.

[0009] Furthermore, the supporting sphere is a cylindrical sphere with a top surface having a diameter of 30-40 mm.

[0010] Furthermore, the working surface, supporting surface, central rib, side rib, outer protrusion, inner protrusion, and supporting ball are all precision cast from 2Cr13 or 3Cr13.

[0011] The advantages and beneficial effects of this utility model are as follows:

[0012] 1. This utility model includes a working surface, a supporting surface, a central rib, and side ribs that are integrally cast. The working surface and the supporting surface are connected by the central rib and the side ribs. The working surface, the supporting surface, the central rib, and the side ribs form an elastic system. Under working pressure, the sector block can undergo slight deformation, so that the height of each sector block in the same thrust bearing is consistent, and the working surface of the sector block can be kept flat, so that the effective bearing area is not reduced.

[0013] 2. The working surface, supporting surface, central rib and side rib of this utility model form a hollow heat dissipation channel. When working, the internal circulating water flows through the hollow heat dissipation channel between the working surface and the supporting surface, which can effectively reduce the temperature of the working surface.

[0014] 3. The support surface of this utility model is provided with an outer protrusion and an inner protrusion at the upper and lower ends, respectively, to restrict the movement of the sector block and ensure that the sector block does not come out during the installation of the thrust bearing.

[0015] 4. The central rib of this utility model is located at the center of the working surface and the support surface, and the side ribs are symmetrically arranged on both sides of the working surface and the support surface. A support ball is set at the center of the support surface, and the support ball is opposite to the central rib. Since the support ball is centrally arranged, a lubricating water film can be formed between the forward and reverse fan-shaped blocks of the water pump and the slide plate, which eliminates the problem of thrust bearing failure due to pump shaft reversal. Of course, it can also be eccentrically set according to user needs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a flat sector block in the prior art;

[0017] Figure 2 This is a schematic diagram of the structure of an irregularly shaped sector block in the prior art;

[0018] Figure 3 This is a schematic diagram of the structure of an improved sector block in the prior art;

[0019] Figure 4 A schematic diagram of the installation of the sector block in a thrust bearing;

[0020] Figure 5 Another installation diagram of the sector block in the thrust bearing;

[0021] Figure 6 This is the front view of the present invention;

[0022] Figure 7 for Figure 6 The left view;

[0023] Figure 8 for Figure 7 BB-direction sectional view;

[0024] Figure 9 This is a schematic diagram of the structure of this utility model;

[0025] Figure 10 This is another structural schematic diagram of the present invention.

[0026] Explanation of reference numerals in the attached figures

[0027] 1-Working surface, 2-Supporting surface, 3-Central rib, 4-Side rib, 5-Hollow heat dissipation channel, 6-Outer protrusion, 7-Inner protrusion, 8-Supporting ball, 9-Spherical top. Detailed Implementation

[0028] The present invention will be further described in detail below through specific embodiments. The following embodiments are only descriptive and not limiting, and should not be used to limit the protection scope of the present invention.

[0029] like Figures 4-10 As shown, the novel sector-shaped blocks of this utility model for submersible pump thrust bearings are arranged at intervals and floatingly mounted on a bracket during operation. A sliding plate and a thrust disc are sequentially mounted on the upper end of each sector-shaped block and connected to the submersible pump rotor shaft. Its innovation lies in the following: it includes a working surface 1, a supporting surface 2, a central rib 3, and side ribs 4, all integrally cast. The working surface 1 and the supporting surface 2 are connected by the central rib 3 and the side ribs 4. The central rib 3 is located at the center of the working surface 1 and the supporting surface 2, and the side ribs 4 are symmetrically arranged on both sides of the working surface 1 and the supporting surface 2. The working surface 1, the supporting surface 2, the central rib 3, and the side ribs 4 form an elastic system. Under working pressure, the sector-shaped blocks can undergo slight deformation, ensuring that the height of each sector-shaped block in the same thrust bearing is consistent, while also maintaining the plane of the working surface of the sector-shaped blocks, thus preventing a reduction in the effective bearing area.

[0030] A hollow heat dissipation channel 5 is formed between the working surface 1, the supporting surface 2, the central rib 3, and the side rib 4. During operation, the internal circulating water flows through the hollow heat dissipation channel between the working surface and the supporting surface, which can effectively reduce the temperature of the working surface and prevent the thrust bearing from failing due to overheating.

[0031] The working surface 1, support surface 2, central rib 3, side rib 4, outer protrusion 6, inner protrusion 7, and support ball 8 are all precision cast from 2Cr13 or 3Cr13.

[0032] The upper and lower ends of the support surface 2 are respectively provided with an outer protrusion 6 and an inner protrusion 7, which are used to restrict the movement of the sector block and ensure that the sector block does not come out during the installation of the thrust bearing.

[0033] A support ball 8 is provided at the center of the support surface 2. The support ball 8 is opposite to the central rib 3. Since the support ball is centrally arranged, a lubricating water film can be formed between the forward and reverse fan-shaped blocks of the water pump and the slide plate, thus eliminating the problem of thrust bearing failure due to pump shaft reversal.

[0034] The thickness of the central rib 3 is 4~6mm. The central rib 3 is connected to the working surface 1 and the supporting surface 2 by an R4 arc, which can transfer the working pressure to the supporting ball. The side ribs ensure that the working surface can remain flat under high load, thereby maintaining the integrity of the water film and maintaining a low coefficient of friction. The thickness of the working surface 1 is 2.5~8mm. The working pressure is carried and transferred by the central rib. The friction surface is close to the cooling water, which can effectively reduce the temperature of the grinding pair.

[0035] The supporting ball 8 is a cylindrical ball, and its top surface is a spherical top 9 with a diameter of 30~40mm.

[0036] In summary, the structural improvements and advantages of this utility model are as follows:

[0037] 1. Hollow elastic structure

[0038] Existing sector-shaped blocks are solid, resulting in poor heat dissipation and a tendency for high-temperature failure of the grinding pair. This invention addresses this issue by designing a sector-shaped block with a box-like structure. The working surface and support surface are separated by a cavity. The central rib is 4mm-6mm thick and transitions seamlessly with the two R4 rounded edges, effectively transferring working pressure to the support ball. The side ribs ensure the working surface remains flat under high loads, maintaining a clean water film and a low coefficient of friction. During operation, internal circulating water flows through the cavity between the working and support surfaces of the sector-shaped block, rapidly and effectively cooling the working surface and preventing the thrust bearing from failing due to overheating.

[0039] 2. The supporting ball is centered.

[0040] Existing sector-shaped block support points are all biased to one side, which is conducive to the formation of a water film and improves the load-bearing capacity. However, if the motor wiring is incorrect and the water pump reverses, dry friction will occur between the grinding pairs, causing the temperature to rise sharply, damaging and failing the thrust bearing, resulting in economic losses and affecting normal operation. This utility model arranges the support in the center, with the support ball located near the center of gravity, and with the hollow structure, it not only ensures the formation of a water film but also prevents the water pump from reversing and causing the bearing to burn out.

[0041] 3. Working surface thickness: 2.5~8mm:

[0042] Existing sector-shaped blocks are mostly solid, making it difficult for frictional heat to dissipate. This invention adopts a hollow structure, with the working pressure carried and transmitted by the central rib. The working surface thickness is set to 3~4mm, and the friction surface is close to the cooling water, which can effectively reduce the temperature of the grinding pair.

[0043] 4. The support surface uses a larger diameter:

[0044] The existing sector-shaped block support ball has a diameter of no more than 15mm, which easily damages the bracket. This utility model changes the existing spherical crown shape to a cylindrical spherical top with a spherical diameter of about 30~40mm, thus solving the problem of sector-shaped blocks damaging the bracket.

[0045] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A novel sector-shaped block for a submersible pump thrust bearing, wherein the sector-shaped block is arranged at intervals and floatingly mounted on a bracket, and a sliding plate and a thrust disc are sequentially mounted on the upper end of the sector-shaped block and connected to the submersible pump rotor shaft, characterized in that: It includes a working surface (1), a supporting surface (2), a central rib (3), and a side rib (4) cast in one piece. The working surface (1) and the supporting surface (2) are connected by the central rib (3) and the side rib (4). The central rib (3) is located at the center of the working surface (1) and the supporting surface (2). The side ribs (4) are symmetrically arranged on both sides of the working surface (1) and the supporting surface (2). The working surface (1), the supporting surface (2), the central rib (3), and the side ribs (4) form an elastic system. A hollow heat dissipation channel (5) is formed in the middle of the working surface (1), the supporting surface (2), the central rib (3), and the side ribs (4).

2. The novel sector-shaped block for submersible pump thrust bearings according to claim 1, characterized in that: The support surface (2) is provided with an outer protrusion (6) and an inner protrusion (7) at its upper and lower ends, respectively.

3. The novel sector-shaped block for submersible pump thrust bearings according to claim 1, characterized in that: A support ball (8) is provided at the center of the support surface (2), and the support ball (8) is opposite to the central rib (3).

4. The novel sector-shaped block for submersible pump thrust bearings according to claim 1, characterized in that: The thickness of the central rib (3) is 4~6mm, and the central rib (3) is connected to the working surface (1) and the supporting surface (2) by an R4 arc; the thickness of the working surface (1) is 2.5~8mm.

5. The novel sector-shaped block for submersible pump thrust bearings according to claim 3, characterized in that: The supporting sphere (8) is a cylindrical sphere with a top surface that is 30-40 mm in diameter.

6. The novel sector-shaped block for submersible pump thrust bearings according to claim 1, characterized in that: The working surface (1), support surface (2), central rib (3), side rib (4), outer protrusion (6), inner protrusion (7) and support ball (8) are all precision cast from 2Cr13 or 3Cr13.

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