Water pump oil shield sealing device

Abstract

The utility model provides a water pump oil shield sealing device, and relates to the field of water pump oil shields. The water pump oil shield sealing device comprises an inner oil shield mounting disc, a first oil return shell, a second oil return shell, a first auxiliary shell, a second auxiliary shell, a third auxiliary shell, an outer oil shield mounting disc, a first composite inner ring, a second composite inner ring, a third composite inner ring, a fourth composite inner ring and a fifth composite inner ring. The utility model discloses a water pump oil shield sealing device. The device comprises an inner oil retainer mounting disc, a first oil return shell, an oil retainer channel, a mounting groove, a first bolt, a second oil return shell, a second bolt, a first auxiliary shell, a first composite inner ring, a second composite inner ring, a third composite inner ring, an atmosphere connector, a first bolt hole, an outer oil retainer mounting disc, a second bolt hole, a second auxiliary shell, an oil return channel, a third bolt, a fourth composite inner ring, a third auxiliary shell and a fourth bolt. And due to the arrangement of the fifth composite inner ring, the outer oil shield does not leak outwards, and the inner oil shield does not leak into the generator, so that the problem of oil leakage is solved, and potential safety hazards are eliminated.

Description

Technical Field

[0001] This utility model relates to a sealing device, specifically a water pump oil baffle sealing device, belonging to the field of water pump oil baffle technology. Background Technology

[0002] The water pump oil baffle is a device used to prevent lubricating oil leakage. It is mainly installed in the bearing part of the water pump. Through its comb-tooth structure, it prevents lubricating oil from leaking outward along the shaft, ensuring that the lubricating oil can flow back into the oil tank, thereby maintaining a stable oil level.

[0003] The original motor oil baffle uses a three-ring floating labyrinth oil seal, with one ring for the outer oil baffle and two rings for the inner oil baffle. The two inner oil baffles are connected to the atmosphere through two hoses. In fact, the one ring of oil seal inside the bearing housing serves to block oil, while the other ring mainly serves to block air.

[0004] The oil seal consists of two halves, upper and lower. A spring holds the upper and lower halves together within the external grooves of the oil seal. The upper oil seal is prevented from rotating with the rotor by a stop key connected to the bearing housing keyway. The inability of the oil seal to automatically compensate for wear is a major cause of oil leakage. Additionally, the relatively small tooth height and tooth spacing of the oil seal can lead to poor oil return, further contributing to the poor sealing effect.

[0005] The motor is an air-cooled water-cooled electric motor manufactured in Shanghai. Its bearing housing is embedded, with part of the housing inside the motor forming an internal oil baffle. If the internal oil baffle leaks, oil will enter the motor, affecting the insulation of the internal coils and posing a potential risk to safe production. Therefore, leakage from the internal oil baffle should be prevented. The other part is exposed on the outside, forming an external oil baffle. If the external oil baffle leaks, it will pollute the environment and does not meet the requirements of safe and civilized production. Therefore, this problem also needs to be solved. To address this issue, we have provided a water pump oil baffle sealing device to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] The purpose of this invention is to provide a water pump oil baffle sealing device to solve the above-mentioned problems, so as to solve the problem that oil leakage will affect the insulation of the internal coil of the motor, which is a potential risk to safe production.

[0008] (II) Technical Solution

[0009] This utility model is achieved through the following technical solution: a water pump oil baffle sealing device, comprising an inner oil baffle mounting plate, a return oil outer shell 1, a return oil outer shell 2, an auxiliary outer shell 1, an auxiliary outer shell 2, an auxiliary outer shell 3, an outer oil baffle mounting plate, a composite inner ring 1, a composite inner ring 2, a composite inner ring 3, a composite inner ring 4, and a composite inner ring 5. The inner wall of the auxiliary outer shell 1 is fixedly connected to the composite inner ring 2. The inner walls of the return oil outer shell 1 and the return oil outer shell 2 are respectively fixedly connected to the composite inner ring 1 and the composite inner ring 3. The inner wall of the auxiliary outer shell 2 is fixedly connected to the composite inner ring 4 by bolt 3. The inner wall of the auxiliary outer shell 3 is fixedly connected to the composite inner ring 5 by bolt 4. The tight fit between the components can effectively achieve the effect of preventing oil leakage.

[0010] Preferably, an oil return housing is fixedly connected to one side of the inner oil baffle mounting plate. The oil return housing has an installation groove, which facilitates the installation and disassembly of the sealing device by the operator.

[0011] Preferably, the first oil return housing is fixedly connected to the second oil return housing by bolt one, and one side of the second oil return housing is fixedly connected to the first auxiliary housing by bolt two. The setting of the first auxiliary housing can effectively ensure the stability of the subsequent inner ring.

[0012] Preferably, the oil return housing 2 has an oil baffle channel inside, and the oil return housing 2 is fixedly connected to the atmospheric connector. The atmospheric connector facilitates connection to external pipelines.

[0013] Preferably, the inner oil baffle mounting plate has a bolt hole one, and the outer oil baffle mounting plate has a bolt hole two. The bolt hole two facilitates the installation of the outer oil baffle mounting plate.

[0014] Preferably, an auxiliary housing 2 is fixedly connected to one side of the outer oil baffle mounting plate. The auxiliary housing 2 has an oil return channel, which ensures normal oil flow.

[0015] Preferably, an auxiliary housing three is fixedly connected to the other side of the outer oil baffle mounting plate. The auxiliary housing three and the auxiliary housing two are symmetrically distributed on both sides of the outer oil baffle mounting plate. The setting of the outer oil baffle mounting plate ensures the stability of multiple components.

[0016] Preferably, the inner oil baffle mounting plate, the first oil return housing, the second oil return housing, the first auxiliary housing, the outer oil baffle mounting plate, the second auxiliary housing, and the third auxiliary housing are all made of high-quality aluminum alloy, which enhances the service life of the device.

[0017] Preferably, the composite inner ring one, composite inner ring two, composite inner ring three, composite inner ring four and composite inner ring five are all made of polymer composite materials to ensure that the device is always in the best sealing effect.

[0018] Preferably, the composite inner ring one, composite inner ring two, composite inner ring three, composite inner ring four and composite inner ring five are all composed of multi-lobed inner rings, and the interfaces between the lobes are overlapped, with compensation gaps left at the interfaces, so that the inner ring fits the rotor outer diameter more properly.

[0019] This utility model provides a water pump oil baffle sealing device, which has the following beneficial effects:

[0020] 1. This water pump oil baffle sealing device, through the arrangement of an inner oil baffle mounting plate, return oil housing 1, oil baffle channel, mounting groove, bolt 1, return oil housing 2, bolt 2, auxiliary housing 1, composite inner ring 1, composite inner ring 2, composite inner ring 3, atmospheric connector, bolt hole 1, outer oil baffle mounting plate, bolt hole 2, auxiliary housing 2, return oil channel, bolt 3, composite inner ring 4, auxiliary housing 3, bolt 4, and composite inner ring 5, can prevent the outer oil baffle from leaking externally and the inner oil baffle from leaking internally into the generator, thereby solving the oil leakage problem and eliminating safety hazards. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the internal oil baffle mounting plate of this utility model;

[0022] Figure 2 This is a cross-sectional schematic diagram of the internal oil baffle mounting plate of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the auxiliary shell II of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the auxiliary shell three of this utility model;

[0025] Figure 5 This is a cross-sectional schematic diagram of the external oil baffle mounting plate of this utility model;

[0026] Figure 6 This is a cross-sectional schematic diagram of the overall structure of this utility model.

[0027] [Explanation of Key Component Symbols]

[0028] 1. Inner oil baffle mounting plate; 2. Oil return housing one; 3. Oil baffle channel; 4. Mounting groove; 5. Bolt one; 6. Oil return housing two; 7. Bolt two; 8. Auxiliary housing one; 9. Composite inner ring one; 10. Composite inner ring two; 11. Composite inner ring three; 12. Atmospheric connector; 13. Bolt hole one; 14. Outer oil baffle mounting plate; 15. Bolt hole two; 16. Auxiliary housing two; 17. Oil return channel; 18. Bolt three; 19. Composite inner ring four; 20. Auxiliary housing three; 21. Bolt four; 22. Composite inner ring five. Detailed Implementation

[0029] This utility model provides a water pump oil baffle sealing device.

[0030] Please see Figures 1-6 The system includes an inner oil baffle mounting plate 1, an oil return housing 1 2, an oil return housing 2 6, an auxiliary housing 1 8, an auxiliary housing 2 16, an auxiliary housing 3 20, an outer oil baffle mounting plate 14, a composite inner ring 1 9, a composite inner ring 2 10, a composite inner ring 3 11, a composite inner ring 4 19, and a composite inner ring 5 22. Each of these components—composite inner ring 1 9, composite inner ring 2 10, composite inner ring 3 11, composite inner ring 4 19, and composite inner ring 5 22—is composed of multiple inner ring segments. The interfaces between the segments are overlapped, with compensation gaps to ensure a more suitable fit between the inner ring and the rotor's outer diameter. The inner ring is placed in a specially designed groove on the outer ring and secured by a locking screw. To limit and stop movement, a spring is strategically designed between the inner ring and the outer ring in the circumferential direction. The spring force keeps the inner arc surface of the oil baffle tightly against the outer circle of the rotor, maintaining a very small gap between the inner ring of the oil baffle and the outer circle of the rotor. This gap is filled with lubricating oil, forming an oil film, thus establishing good lubrication between the inner ring and the rotor. At the same time, this small gap can also prevent lubricating oil leakage. The inner wall of the inner ring that contacts the shaft is specially designed with V-shaped grooves. This structural design greatly reduces the contact area between the inner ring and the shaft, and allows the inner ring and the rotor to fit better. At the same time, the grooves can form a stable oil storage space, ensuring lubrication between the inner ring and the shaft.

[0031] Composite inner rings 1-9, 2-10, 3-11, 4-19, and 5-22 are all made of high-molecular composite materials, which improve their mechanical properties, oil resistance, corrosion resistance, temperature resistance, and wear resistance, while retaining their self-lubricating and insulating properties. The main component of this composite material is polytetrafluoroethylene (PTFE), a high-molecular polymer that is resistant to high temperatures, acids and alkalis, and various organic solvents. Combined with the application scenario of the water pump motor bearing housing, it can resist the chemical corrosion of lubricating oil, thus having a long service life. At the same time, PTFE has an extremely low coefficient of friction and excellent lubricity. As an oil baffle inner ring in contact with the journal, it can ensure a good sealing effect for the rotor under normal operation.

[0032] The inner oil baffle mounting plate 1, oil return housing 1 2, oil return housing 2 6, auxiliary housing 1 8, outer oil baffle mounting plate 14, auxiliary housing 2 16 and auxiliary housing 3 20 are all made of high-quality aluminum alloy material, and the oil baffle is attached to both ends of the bearing housing end cover by bolts.

[0033] An auxiliary housing 20 is fixedly connected to the other side of the outer oil baffle mounting plate 14. The auxiliary housing 20 and the auxiliary housing 26 are symmetrically distributed on both sides of the outer oil baffle mounting plate 14. The purpose of setting the auxiliary housing 20 and the auxiliary housing 26 is to effectively install the inner ring and ensure the stability of the inner ring.

[0034] An auxiliary housing 16 is fixedly connected to one side of the outer oil baffle mounting plate 14. The auxiliary housing 16 has an oil return channel 17. The inner oil baffle mounting plate 1 has a bolt hole 13. The outer oil baffle mounting plate 14 has a bolt hole 15. The oil return housing 16 has an oil baffle channel 3 inside. The oil return housing 16 is fixedly connected to the atmospheric connector 12, which can effectively reduce the impact of negative pressure on the bearing housing and prevent lubricating oil from leaking into the stator coil of the motor.

[0035] The oil return housing 12 is fixedly connected to the oil return housing 26 by bolt 15. One side of the oil return housing 26 is fixedly connected to the auxiliary housing 18 by bolt 27. The oil return housing 12 is fixedly connected to one side of the inner oil baffle mounting plate 1. The oil return housing 12 has a mounting groove 4. The mounting groove 4 is designed to facilitate tightening the bolt 15, so that the oil return housing 12 and the oil return housing 26 can be tightly joined together.

[0036] The inner wall of the auxiliary housing 18 is fixedly connected with a composite inner ring 2 10. The inner walls of the oil return housing 12 and the oil return housing 26 are respectively fixedly connected with composite inner ring 1 9 and composite inner ring 3 11. Composite inner ring 1 9, composite inner ring 2 10 and composite inner ring 3 11 are three composite inner ring contact seals and utilize the original installation position. The main function of the inner oil baffle on the outside of the original bearing housing is to block air. Therefore, a three-ring contact inner ring is specially designed so that the oil baffle has two functions: one ring blocks oil and the other two rings block air.

[0037] The inner wall of auxiliary housing 216 is fixedly connected to composite inner ring 419 by bolt 318, and the inner wall of auxiliary housing 320 is fixedly connected to composite inner ring 52 by bolt 421. Composite inner ring 419 and composite inner ring 522 are two composite inner ring contact seals and utilize the original installation position. The sealing effect fully meets the requirements.

[0038] Working principle: First, the floating labyrinth oil seal on the inner oil baffle side is retained and replaced with a new floating labyrinth oil seal. Then, the inner oil baffle mounting plate 1 and the outer oil baffle mounting plate 14 are installed on the original mounting positions on both sides of the original motor using screws. At this time, the newly designed three composite inner rings 9, 10, and 11 are located on one side of the original motor. The specially designed three-ring contact inner rings give the oil baffle both oil-blocking and air-blocking functions. One ring blocks oil, and the other two rings block air. Since there is no oil return hole at the original inner oil baffle, an oil return hole with a diameter of φ15mm needs to be opened at the end face of the bearing housing according to the oil level. The air introduced by the two hoses connected to the atmospheric connector 12 enters the middle of the composite inner ring oil baffle channel 3 to reduce the impact of negative pressure on the bearing housing and prevent lubricating oil from leaking into the stator coil of the motor. Then, the outer oil baffle mounting plate 14 is installed on the other side of the original motor at the original mounting position, so that the composite inner ring 19 and 22 are located on the other side of the original motor, so that the sealing effect fully meets the requirements.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A water pump oil baffle sealing device, comprising an inner oil baffle mounting plate (1), a return oil outer shell one (2), a return oil outer shell two (6), an auxiliary outer shell one (8), an auxiliary outer shell two (16), an auxiliary outer shell three (20), an outer oil baffle mounting plate (14), a composite inner ring one (9), a composite inner ring two (10), a composite inner ring three (11), a composite inner ring four (19), and a composite inner ring five (22), characterized in that: The inner wall of the auxiliary housing 1 (8) is fixedly connected to the composite inner ring 2 (10). The inner walls of the oil return housing 1 (2) and the oil return housing 2 (6) are respectively fixedly connected to the composite inner ring 1 (9) and the composite inner ring 3 (11). The inner wall of the auxiliary housing 2 (16) is fixedly connected to the composite inner ring 4 (19) by bolt 3 (18). The inner wall of the auxiliary housing 3 (20) is fixedly connected to the composite inner ring 5 (22) by bolt 4 (21).

2. The water pump oil baffle sealing device according to claim 1, characterized in that: The inner oil baffle mounting plate (1) is fixedly connected to one side of the oil return housing (2), and the oil return housing (2) is provided with a mounting groove (4).

3. The water pump oil baffle sealing device according to claim 1, characterized in that: The first oil return housing (2) is fixedly connected to the second oil return housing (6) by bolt 1 (5), and one side of the second oil return housing (6) is fixedly connected to the first auxiliary housing (8) by bolt 2 (7).

4. The water pump oil baffle sealing device according to claim 1, characterized in that: The oil return housing 2 (6) has an oil baffle channel (3) inside, and the oil return housing 2 (6) is fixedly connected to the atmospheric connector (12).

5. The water pump oil baffle sealing device according to claim 1, characterized in that: The inner oil baffle mounting plate (1) has a bolt hole one (13), and the outer oil baffle mounting plate (14) has a bolt hole two (15).

6. The water pump oil baffle sealing device according to claim 1, characterized in that: An auxiliary housing (16) is fixedly connected to one side of the external oil baffle mounting plate (14), and the auxiliary housing (16) has an oil return channel (17).

7. The water pump oil baffle sealing device according to claim 1, characterized in that: An auxiliary housing three (20) is fixedly connected to the other side of the outer oil baffle mounting plate (14). The auxiliary housing three (20) and the auxiliary housing two (16) are symmetrically distributed on both sides of the outer oil baffle mounting plate (14).

8. The water pump oil baffle sealing device according to claim 1, characterized in that: The inner oil baffle mounting plate (1), oil return shell one (2), oil return shell two (6), auxiliary shell one (8), outer oil baffle mounting plate (14), auxiliary shell two (16) and auxiliary shell three (20) are all made of high-quality aluminum alloy.

9. A water pump oil baffle sealing device according to claim 1, characterized in that: The composite inner ring 1 (9), composite inner ring 2 (10), composite inner ring 3 (11), composite inner ring 4 (19) and composite inner ring 5 (22) are all made of polymer composite materials.

10. A water pump oil baffle sealing device according to claim 1, characterized in that: The composite inner ring 1 (9), composite inner ring 2 (10), composite inner ring 3 (11), composite inner ring 4 (19) and composite inner ring 5 (22) are all composed of multi-lobed inner rings, with the interfaces between the lobes being overlapped and having compensation gaps.

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