Oil throwing prevention oil tank sealing device of vertical water pump

Abstract

The utility model relates to the technical field of vertical water pumps, in particular to an anti-oil-throwing oil tank sealing device of a vertical water pump, which comprises a motor, a connecting piece is fixedly mounted at the bottom of the motor, a shell is fixedly mounted at the bottom of the connecting piece, a rotating shaft is fixedly mounted at the driving end of the motor, and an oil tank is fixedly mounted at the top of the shell. According to the anti-oil-throwing oil tank sealing device of the vertical water pump, the motor, the shell, the connecting piece, the oil tank, the lower sealing cover, the upper sealing cover, the rotating shaft, the shaft sleeve, the rubber sealing ring, the annular embedded part, the sealing lip, the oil retainer, the oil collecting groove and the recycling hole are used in cooperation, and unrelated parts in the device are the same as those in the prior art or can be achieved through the prior art. The sealing device has excellent anti-leakage performance, the oil retainer and the oil collecting groove on the shaft sleeve can effectively block and collect thrown lubricating oil, the lubricating oil flows back to an oil tank through the recovery hole, and the oil throwing prevention effect is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of vertical water pump technology, specifically to a sealing device for an oil tank of a vertical water pump to prevent oil spillage. Background Technology

[0002] Vertical water pumps play a vital role in many areas of industrial production and daily life. They are widely used in water supply and drainage systems, HVAC circulation, water conservancy projects, and other scenarios, providing power support for the transportation and circulation of liquids.

[0003] Existing vertical water pump oil tank sealing devices have some problems in practical use. When the water pump is running at high speed, the internal lubricating oil will be thrown out due to centrifugal force. Traditional sealing structures are difficult to effectively prevent this oil from being thrown out, causing lubricating oil to leak to the outside of the water pump. This not only wastes lubricating oil and increases operating costs, but may also pollute the surrounding environment. Moreover, the leaked lubricating oil may enter other components of the water pump, affecting their performance and service life.

[0004] Therefore, it is necessary to provide a sealing device for the oil tank of a vertical water pump to prevent oil spillage and solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a sealing device for the oil tank of a vertical water pump to prevent oil spillage, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An oil tank sealing device for preventing oil spillage in a vertical water pump, comprising:

[0008] The housing assembly includes a connector fixedly connected to the bottom of the motor and a housing fixedly connected to the bottom of the connector, wherein a rotating shaft is fixedly mounted on the drive end of the motor, and the rotating shaft is placed in an oil tank in the inner cavity of the connector;

[0009] The sealing assembly includes a lower sealing cover fixedly installed on the top of the oil tank, and an upper sealing cover fixedly installed on the top of the lower sealing cover by bolts, wherein the top of the upper sealing cover is in contact with the lower end face of the oil tank.

[0010] The anti-oil-slinging assembly includes the inner wall of the upper sealing cover and a bushing fixedly installed on the top. Multiple oil-blocking rings are evenly distributed on the inner wall of the bushing, and an oil return passage connecting the oil-blocking rings and the oil tank. The bushing is fitted with the rotating shaft.

[0011] Furthermore, an oil collection groove is formed between adjacent oil baffle rings, and a recovery hole is provided between adjacent oil collection grooves. The adjacent oil collection grooves are connected through the recovery hole, and the recovery hole is connected to the interior of the oil tank. The oil return passage is formed between the oil baffle ring, the oil collection groove, the recovery hole, and the oil tank.

[0012] Furthermore, an annular insert is fixedly installed at the bottom of the lower sealing cover, and a sealing lip is provided on the outer surface of the annular insert, and the sealing lip is tightly fitted to the inner wall of the oil tank.

[0013] Furthermore, a rubber sealing ring is provided between the lower sealing cover and the upper sealing cover.

[0014] Furthermore, the outer side of the bottom of the oil collection tank is chamfered.

[0015] Furthermore, the inner diameter of the bushing is adapted to the outer diameter of the rotating shaft.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model utilizes the combined use of a motor, housing, connectors, oil tank, lower sealing cover, upper sealing cover, rotating shaft, bushing, rubber sealing ring, annular insert, sealing lip, oil retainer ring, oil collection groove, and recovery hole. This sealing device boasts excellent leak-proof performance. The oil retainer ring and oil collection groove on the bushing effectively block and collect splashed lubricating oil, while the recovery hole allows the lubricating oil to flow back to the oil tank, enhancing the anti-splashing effect. The sealing lip and rubber sealing ring work together to prevent lubricating oil leakage at all structural connections, ensuring a good seal for the oil tank. Its reasonable structural design ensures high reliability and stability of the sealing components, making them less prone to damage. This effectively reduces the frequency of sealing component replacement, lowers maintenance costs, and helps improve the overall performance and extend the service life of the water pump. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a partial cross-sectional view of the present invention.

[0020] Figure 3 This is a cross-sectional structural schematic diagram of the central oil tank of this utility model;

[0021] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Motor; 2. Housing; 3. Connector; 4. Oil tank; 5. Lower sealing cover; 6. Upper sealing cover; 7. Shaft; 8. Bushing; 9. Rubber sealing ring; 10. Annular insert; 11. Sealing lip; 12. Oil baffle ring; 13. Oil collection groove; 14. Recovery hole. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-4 One embodiment provided by this utility model:

[0028] An oil tank sealing device for preventing oil spillage in a vertical water pump, comprising:

[0029] Motor 1, with connector 3 fixedly installed at the bottom of motor 1, housing 2 fixedly installed at the bottom of connector 3, rotating shaft 7 fixedly installed at the drive end of motor 1, oil tank 4 fixedly installed at the top of housing 2, lower sealing cover 5 fixedly installed at the top of oil tank 4, upper sealing cover 6 fixedly installed at the top of lower sealing cover 5 by bolts, and bushing 8 fixedly installed at the top of upper sealing cover 6, and bushing 8 and rotating shaft 7 are fitted together.

[0030] Multiple oil baffle rings 12 are evenly distributed on the inner wall of the bushing 8. An oil collection groove 13 is formed between adjacent oil baffle rings 12. A recovery hole 14 is provided between adjacent oil collection grooves 13, and adjacent oil collection grooves 13 are connected through the recovery hole 14. The recovery hole 14 is connected to the inside of the oil tank 4.

[0031] In specific implementation, the following methods can be used to achieve communication between the recovery hole 14 and the interior of the oil tank 4: 1. Drilling / casting channels: Dedicated oil guide channels are machined inside the upper sealing cover 6 and the lower sealing cover 5 along their thickness direction (vertical direction). This is the most core and commonly used method. These channels can be straight drilled holes or more complex cast cavities. 2. End face fit: Grooves, annular grooves, or aligned orifices are designed on the contact surfaces of the bushing 8 and the upper sealing cover 6, and the contact surfaces of the upper sealing cover 6 and the lower sealing cover 5, to ensure that lubricating oil can smoothly flow from the outlet of the previous component to the inlet of the next component. The above examples are only for demonstration purposes; any method that enables communication between the recovery hole 14 and the interior of the oil tank 4 can be used in this utility model.

[0032] In one embodiment, an annular insert 10 is fixedly installed at the bottom of the lower sealing cover 5. A sealing lip 11 is provided on the outer surface of the annular insert 10, and the sealing lip 11 is tightly fitted with the inner wall of the oil tank 4, which enhances the sealing effect between the lower sealing cover 5 and the oil tank 4, prevents the lubricating oil in the oil tank 4 from leaking from the connection between the lower sealing cover 5 and the oil tank 4, and improves the leakage prevention performance of the entire sealing device.

[0033] In one preferred embodiment, a rubber sealing ring 9 is provided between the lower sealing cover 5 and the upper sealing cover 6, which can fill the tiny gaps at the connection between the two, effectively preventing the lubricating oil in the oil tank 4 from leaking from the connection between the upper and lower sealing covers 5, enhancing the overall sealing performance of the sealing device, and avoiding waste and environmental pollution caused by lubricating oil leakage.

[0034] In one embodiment, the outer side of the bottom of the inner wall of the oil collection tank 13 is chamfered, which allows the lubricating oil collected in the oil collection tank 13 by the oil baffle ring 12 to flow more smoothly to the bottom of the oil collection tank 13 under the action of gravity and its own flow characteristics, so that the lubricating oil can quickly flow back to the oil tank 4 through the recovery hole 14.

[0035] In one preferred embodiment, the inner diameter of the bushing 8 is matched with the outer diameter of the rotating shaft 7, ensuring a tight and precise fit between the bushing 8 and the rotating shaft 7. On the one hand, this fit reduces the gap between them, preventing lubricating oil from leaking out of the gap and enhancing the leak-proof performance of the sealing device. On the other hand, the tight fit ensures that the rotating shaft 7 rotates stably within the bushing 8, avoiding shaking of the rotating shaft 7 due to excessive gap, thereby reducing vibration and noise and improving the stability and reliability of the water pump operation.

[0036] The working principle of this utility model is as follows: All parts not described herein are the same as or can be implemented using existing technology. When installing the sealing device, first, the lower sealing cover 5 is precisely placed at the top opening of the oil tank 4, ensuring that the sealing lip 11 is tightly fitted to the inner wall of the oil tank 4, forming a preliminary sealing barrier. Next, the rubber sealing ring 9 is placed flat on top of the lower sealing cover 5, followed by the upper sealing cover 6, and securely fixed with bolts to ensure a stable and well-sealed connection between the upper and lower sealing covers 5. Then, the bushing 8 is reliably fixed to the top of the upper sealing cover 6, allowing the rotating shaft 7 to pass through the bushing 8 and the oil tank 4 in sequence and connect to the outer casing 2, ensuring smooth and stable power transmission. During pump operation, when the lubricating oil is thrown up due to centrifugal force, the multiple oil-blocking rings 12 and oil-collecting grooves 13 evenly distributed on the bushing 8 effectively block and collect the oil, significantly reducing the possibility of lubricating oil leakage to the outside. Meanwhile, the recovery hole 14 allows the lubricating oil splashed onto the bushing 8 to flow back into the oil tank 4, further enhancing the anti-splashing performance. The sealing lip 11 and the rubber sealing ring 9 work together to prevent lubricating oil leakage at all structural joints, thus ensuring a good sealing effect for the oil tank 4. This sealing device has a reasonable structural design, and the sealing components have high reliability and stability, are not easily damaged, effectively reducing the frequency of sealing component replacement, thereby reducing maintenance costs, and also helping to improve the overall performance and service life of the water pump. The above shows and describes 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 preferred examples of this utility model and are not intended to limit it. 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 sealing device for an oil tank of a vertical water pump to prevent oil spillage, characterized in that, It includes: The housing assembly includes a connector fixedly connected to the bottom of the motor and a housing fixedly connected to the bottom of the connector, wherein a rotating shaft is fixedly mounted on the drive end of the motor, and the rotating shaft is placed in an oil tank in the inner cavity of the connector; The sealing assembly includes a lower sealing cover fixedly installed on the top of the oil tank, and an upper sealing cover fixedly installed on the top of the lower sealing cover by bolts, wherein the top of the upper sealing cover is in contact with the lower end face of the oil tank. The anti-oil-slinging assembly includes the inner wall of the upper sealing cover and a bushing fixedly installed on the top. Multiple oil-blocking rings are evenly distributed on the inner wall of the bushing, and an oil return passage connecting the oil-blocking rings and the oil tank. The bushing is fitted with the rotating shaft.

2. The anti-whirl oil sump seal for a vertical water pump of claim 1, wherein: An oil collection groove is formed between adjacent oil baffle rings, and a recovery hole is provided between adjacent oil collection grooves. The adjacent oil collection grooves are connected through the recovery hole, and the recovery hole is connected to the interior of the oil tank. The oil return passage is formed between the oil baffle rings, the oil collection grooves, the recovery hole, and the oil tank.

3. The anti-whirl oil sump seal for a vertical water pump of claim 1, wherein: An annular insert is fixedly installed at the bottom of the lower sealing cover. A sealing lip is provided on the outer surface of the annular insert, and the sealing lip is tightly fitted to the inner wall of the oil tank.

4. The anti-whirl oil sump seal for a vertical water pump of claim 1, wherein: A rubber sealing ring is provided between the lower sealing cover and the upper sealing cover.

5. The anti-whirl oil sump seal for a vertical water pump of claim 2, wherein: The outer side of the bottom of the inner wall of the oil collection tank is chamfered.

6. The anti-whirl oil sump seal for a vertical water pump of claim 1, wherein: The inner diameter of the bushing is adapted to the outer diameter of the rotating shaft.

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