Long-acting wear-resistant water pump shaft sleeve

Abstract

The utility model provides a long-acting wear-resistant water pump shaft sleeve which is characterized in that the long-acting wear-resistant water pump shaft sleeve comprises a main body and a lining detachably installed in the main body, one end of the main body is provided with an outward flanging structure, and the flanging structure is provided with a plurality of connecting holes; an annular stop part is arranged at one end of the inner wall of the main body, a conical guide part is arranged at the other end of the inner wall of the main body, a plurality of oil storage grooves are formed in the middle of the inner wall of the main body and are arranged in the axial direction of the main body, meanwhile, oil inlet holes used for filling lubricating oil into the oil storage grooves are formed in the side wall of the main body, and a plurality of X-shaped oil guide grooves are formed in the inner wall of the lining; the inner diameter of the lining is smaller than that of the annular stopping part, and a plurality of functional grooves are formed in the annular stopping part. According to the shaft sleeve, the lining is detachably mounted in the main body, the lining is in direct contact with the rotating shaft, the abraded lining can be taken out regularly and replaced with a new lining, in the using process of the shaft sleeve, lubricating oil can be slowly released into the inner side of the lining through the oil guide holes, lubrication between the lining and the rotating shaft is achieved, and the lubricating time is prolonged.

Description

Technical Field

[0001] This invention belongs to the technical field of pump bushings, and in particular relates to a long-lasting and wear-resistant pump bushing. Background Technology

[0002] Water pumps typically mount an impeller on a pump shaft, which is then driven by a motor or other power source to transport the medium. Considering the relative motion between the impeller and the pump shaft, surface-to-surface contact is frequent. When the impeller or pump shaft wears to a certain extent, slippage can occur, affecting the continued operation of the water pump. Replacing the impeller or pump shaft is not only time-consuming and labor-intensive, but also results in very high operating costs. Therefore, a bushing is usually installed between the impeller and the pump shaft. As the friction surface in contact with the shaft, the bushing will wear after a certain period of use, affecting the stability of the pump shaft. Qualitative wear will also exacerbate pump shaft wear. Therefore, existing pump shaft sleeves need to be replaced entirely after a period of use, resulting in high operating costs and not in line with the concept of energy conservation and environmental protection. At the same time, the lubrication capacity and durability of existing pump shaft sleeves are poor. The lubricating oil injected into the shaft sleeve through the grease fitting is almost entirely in direct contact with the pump shaft immediately, without the ability to retain the lubricating oil. Therefore, the lubricating oil will be consumed in a short time. Without timely maintenance, lubrication failure is likely to occur, leading to damage to the pump shaft or impeller. Therefore, it is necessary to improve the existing pump shaft sleeves. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and propose a long-lasting and wear-resistant water pump bushing.

[0004] To achieve the above objectives, the technical solution created by this invention is implemented as follows:

[0005] A long-lasting and wear-resistant water pump bushing includes a main body and a detachable inner liner inside the main body. One end of the main body has an outwardly flanged structure with several connecting holes. One end of the inner wall of the main body has an annular stop and the other end has a conical guide. Several oil storage grooves are provided in the middle of the inner wall of the main body, and each oil storage groove is arranged along the axial direction of the main body. At the same time, an oil inlet hole for adding lubricating oil to the oil storage groove is provided on the side wall of the main body. The inner wall of the inner liner has several X-shaped oil guide grooves. The inner diameter of the inner liner is smaller than the inner diameter of the annular stop, and several functional grooves are provided on the annular stop.

[0006] Furthermore, the connecting holes on the flange structure are evenly distributed around the main body axis.

[0007] Furthermore, the length of the lining is less than the length of the main body.

[0008] Furthermore, the length of the inner lining along the main body axis and the length of the annular stop along the main body axis are less than the total length of the main body.

[0009] Furthermore, the corners at both ends of the lining are chamfered.

[0010] Furthermore, the conical guide portion and the flange structure are located on the same side of the main body.

[0011] Furthermore, the inner wall of the main body is provided with 2-4 oil storage tanks.

[0012] Furthermore, the functional slots are evenly distributed around the main axis.

[0013] Compared with existing technologies, the present invention has the following advantages:

[0014] This invention features a simple and rationally designed structure. A detachable liner is installed within the main body, directly contacting the rotating shaft. This allows for periodic removal and replacement of the worn liner, maintaining the functionality of the water pump shaft sleeve, ensuring smooth pump shaft operation, effectively preventing wear on the pump shaft or impeller, and thus protecting the transmission mechanism. An oil reservoir on the inner wall of the main body ensures a long-term lubricating oil supply between the liner and the main body. During use, the lubricating oil is slowly released into the inner liner through the oil guide hole, achieving lubrication between the liner and the rotating shaft and extending lubrication time. Attached Figure Description

[0015] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0016] Figure 1 A schematic diagram of the structure created by this invention;

[0017] Figure 2 This is a schematic diagram of the main body of the invention.

[0018] Figure 3 This is a schematic diagram of the structure of the inner lining portion in this invention;

[0019] Figure 4 A structural cross-sectional view created for this invention;

[0020] Figure 5 A cross-sectional view of the main body of the invention;

[0021] Figure 6 A cross-sectional view of the lining portion for the present invention. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention 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, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., 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, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] A long-lasting and wear-resistant water pump bushing, such as Figures 1 to 6 As shown, the system includes a main body 1 and a detachable inner liner 2 inside the main body. The edges of both ends of the inner liner are chamfered. One end of the main body has an outward-facing flange structure 3 with several connecting holes 4. The flange structure allows the pump shaft sleeve to be fixed to the structural components. The connecting holes on the flange structure are evenly distributed around the axis of the main body. The length of the inner liner is less than the length of the main body.

[0027] One end of the inner wall of the main body is provided with an annular stop 5, and the other end is provided with a conical guide 6, with one side of the conical guide being the open end of the main body. Several oil storage grooves 7 are provided in the middle of the inner wall of the main body, and each oil storage groove is arranged along the axial direction of the main body. Preferably, the conical guide and the flange structure are located on the same side of the main body. The length of the lining along the main body axis and the length of the annular stop along the main body axis are less than the total length of the main body. For example, the inner wall of the main body is provided with 2-4 oil storage grooves. The functional grooves are evenly distributed around the main body axis.

[0028] At least one oil inlet hole 9 is provided on the side wall of the main body, and each oil inlet hole is connected to an oil storage tank. That is, at least one oil storage tank is connected to an oil inlet hole. The inner wall of the liner is provided with several X-shaped oil guide grooves 10, and oil guide holes 8 are provided on the side wall of the liner, which are connected to each oil guide groove. The inner diameter of the liner is smaller than the inner diameter of the annular stop, and several functional grooves 11 are provided on the annular stop. Typically, the width of the functional grooves is 2-5 mm.

[0029] To facilitate the entry of lubricating grease into the liner through the oil guide holes, the surface roughness value of the middle part of the outer wall of the liner is greater than 6.3 μm during machining. The outer diameter of the middle part of the outer wall of the liner (12) is 5-20 μm smaller than the outer diameter of the two ends (13) of the outer wall of the liner. All oil guide holes are arranged in the middle part of the outer wall of the liner. When installing the bushing, lubricating grease or lubricating oil (hereinafter referred to as "lubricating oil") is first added to the oil reservoir through the oil inlet hole. During the use of the bushing, the lubricating oil will be slowly released from the oil reservoir into the liner through the oil guide holes, realizing lubrication between the liner and the rotating shaft and extending the lubrication time.

[0030] Typically, the liner protrudes 1-2mm beyond the annular stop, while the functional groove is 2-3mm deep. This structural design allows more surface area of ​​the liner end face to be exposed at the functional groove, facilitating the pushing of the liner out from one side of the annular stop towards the open end using tools. This makes it easier to remove the liner from the main body after wear and replace it with a new one. For example, there are 2-3 functional grooves, evenly distributed along the circumference of the main body.

[0031] This invention features a simple and rationally designed structure. A detachable liner is installed within the main body, directly contacting the rotating shaft. This allows for periodic removal and replacement of the worn liner, maintaining the functionality of the water pump shaft sleeve, ensuring smooth pump shaft operation, effectively preventing wear on the pump shaft or impeller, and thus protecting the transmission mechanism. An oil reservoir on the inner wall of the main body ensures a long-term lubricating oil supply between the liner and the main body. During use, the lubricating oil is slowly released into the inner liner through the oil guide hole, achieving lubrication between the liner and the rotating shaft and extending lubrication time.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A long-lasting and wear-resistant water pump shaft sleeve, characterized in that: The system includes a main body and a detachable inner liner. One end of the main body has an outwardly flanged structure with several connecting holes. One end of the inner wall of the main body has an annular stop, and the other end has a conical guide. Several oil reservoirs are located in the middle of the inner wall of the main body, and each oil reservoir is arranged along the axial direction of the main body. At the same time, an oil inlet hole for adding lubricating oil to the oil reservoir is provided on the side wall of the main body. The inner wall of the liner has several X-shaped oil guide grooves. The inner diameter of the liner is smaller than the inner diameter of the annular stop. Several functional grooves are provided on the annular stop. The roughness value of the middle position of the outer wall of the liner is greater than 6.3 μm, and the outer diameter of the middle position of the outer wall of the liner is 5-20 μm smaller than the outer diameter of the two ends of the outer wall of the liner. Oil guide holes communicating with each oil guide groove are provided on the side wall of the liner, and each oil guide hole is located in the middle position of the outer wall of the liner, so that lubricating oil is slowly released from the oil reservoir into the interior of the liner through the oil guide holes.

2. The long-lasting wear-resistant water pump shaft sleeve according to claim 1, characterized in that: The connecting holes on the flange structure are evenly distributed around the main axis.

3. The long-lasting wear-resistant water pump shaft sleeve according to claim 1, characterized in that: The length of the lining is less than the length of the main body.

4. The long-lasting wear-resistant water pump shaft sleeve according to claim 3, characterized in that: The length of the inner lining along the main body axis and the length of the annular stop along the main body axis are less than the total length of the main body.

5. The long-lasting wear-resistant water pump shaft sleeve according to claim 1, characterized in that: The edges at both ends of the lining are chamfered.

6. The long-lasting wear-resistant water pump shaft sleeve according to claim 1, characterized in that: The conical guide portion and the flange structure are located on the same side of the main body.

7. The long-lasting wear-resistant water pump shaft sleeve according to claim 1, characterized in that: The inner wall of the main body is provided with 2-4 oil storage tanks.

8. The long-lasting wear-resistant water pump shaft sleeve according to claim 1, characterized in that: The functional slots are evenly distributed around the main axis.

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