A bearing self-lubricating structure

Abstract

This utility model relates to the field of centrifugal pumps and discloses a self-lubricating bearing structure, including a base. A motor is fixedly connected to the top of the base, and a bearing housing is rotatably connected to the output end of the motor. A pump housing is fixedly connected to the left side of the bearing housing. A lubrication assembly is installed on the outside of the bearing housing. A connecting assembly is installed between the output and input ends of the pump housing. The lubrication assembly includes a cam and a housing. The cam is fixedly connected to the output end of the motor, and the bottom of the housing is fixedly connected to the top of the base. Two springs are fixedly connected to the inner bottom wall of the housing. In this utility model, by opening the valve, the springs push the piston to reset, creating positive pressure on the housing. This, combined with the cam pressing the pressure rod, creates negative pressure on the housing, causing the lubricating oil in the oil tank to flow along the oil pipe and ultimately into the bearing housing. This achieves automatic lubrication of the bearing housing by the housing, thereby lubricating the internal bearing. The operation is convenient and labor-saving.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pumps, and in particular to a bearing self-lubricating structure. Background Technology

[0002] A centrifugal pump is a common fluid machinery device that uses the principle of centrifugal force to transport liquids to a designated location. Its working principle is that the impeller is driven by an electric motor to rotate, so that the liquid enters the pump body and is accelerated by the high-speed rotation of the impeller, and then flows out through the outlet of the pump casing to form a flow. The main features of centrifugal pumps are simple structure, wide use, and convenient operation. They are suitable for conveying clean water, chemical liquids and various low-viscosity liquids.

[0003] Centrifugal pumps come in various models depending on their application, such as single-stage pumps and multi-stage pumps, to meet different pressure and flow requirements. In the industrial field, centrifugal pumps are commonly used for liquid transportation in industries such as chemical, pharmaceutical, power, petroleum, and mining. The advantages of centrifugal pumps include high efficiency and energy saving, stable flow, and strong adaptability. However, they also have some limitations, such as being less suitable for transporting liquids with high viscosity and being susceptible to cavitation.

[0004] Centrifugal pumps consist of a motor, bearing housing, bearings, impeller, and pump casing. The motor rotates, which drives the impeller to rotate via the pump shaft, thereby transporting liquid. Since the pump shaft is supported by bearings and a bearing housing, lubricating oil needs to be added to the bearing housing after a period of use to lubricate and cool the bearings. However, the traditional method of adding lubricating oil is to manually add it through the oil filling port on the top of the bearing housing, which is time-consuming and laborious. Moreover, the oil filling port is very small, and even when used with a funnel, some lubricating oil will leak out, resulting in waste. Therefore, a self-lubricating bearing structure is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a self-lubricating bearing structure, which aims to improve the traditional method of adding lubricating oil by manually adding it through the oil filling port on the top of the bearing housing. This method is time-consuming and laborious, and the oil filling port is very small. Even when used with a funnel, some lubricating oil will still flow out, causing waste.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a bearing self-lubricating structure, including a base, a motor fixedly connected to the top of the base, a bearing housing rotatably connected to the output end of the motor, a pump housing fixedly connected to the left side of the bearing housing, a lubrication assembly installed outside the bearing housing, and a connecting assembly installed between the output end and the input end of the pump housing;

[0007] The lubrication assembly includes a cam and a housing. The cam is fixedly connected to the output end of the motor. The bottom of the housing is fixedly connected to the top of the base. Two springs are fixedly connected to the bottom wall of the housing. A piston is fixedly connected between the tops of the two springs. A pressure rod is fixedly connected to the top of the piston. Oil pipes are fixedly connected to both the front and rear sides of the housing. One-way valves are fixedly connected to the outside of the oil pipes. An oil tank is fixedly connected to the input end of the rear oil pipe, and a valve is fixedly connected to the outside of the front oil pipe.

[0008] As a further description of the above technical solution:

[0009] The connecting assembly includes a flange one, the inner side of which is fixedly connected to the outside of the base. Multiple locking blocks are fixedly connected to the outside of the flange one. A flange two is slidably connected between the multiple locking blocks. A material pipe is fixedly connected inside the flange two. Multiple sleeves are fixedly connected to the outside of the flange two. Insert rods are slidably connected inside the sleeves. A slide plate is fixedly connected to the outside of the insert rods. A spring two is fixedly connected to the outside of the slide plate. Pull rings are fixedly connected between the multiple insert rods.

[0010] As a further description of the above technical solution:

[0011] The cam is externally slidably connected to the top of the pressure rod, and the top of the oil pipe is fixedly connected to the top of the bearing housing.

[0012] As a further description of the above technical solution:

[0013] The piston is externally slidably connected to the inner wall of the housing, and the pressure rod is externally slidably connected to the inside of the housing.

[0014] As a further description of the above technical solution:

[0015] The oil tank is externally fixedly connected to the inside of the base, and the bottom of the bearing housing is fixedly connected to the top of the base.

[0016] As a further description of the above technical solution:

[0017] The insertion rod is externally slidably connected to the outside of the locking block, and externally slidably connected to the inside of the flange.

[0018] As a further description of the above technical solution:

[0019] The insertion rod is inserted into the inside of flange one, and the inner side of the sliding plate abuts against the outside of flange two.

[0020] As a further description of the above technical solution:

[0021] The second spring is externally fixedly connected to the inner wall of the housing, and the sliding plate is externally slidably connected to the inner wall of the housing.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by opening the valve, the spring pushes the piston to reset, creating positive pressure on the outer shell. In conjunction with the cam pressing the pressure rod, negative pressure is created on the outer shell, causing the lubricating oil in the oil tank to be injected into the bearing housing along the oil pipe. This achieves automatic injection of lubricating oil into the bearing housing, thereby lubricating the internal bearing. The operation is convenient and labor-saving.

[0024] 2. In this utility model, by pulling the pull ring to drive the insert rod, the slide plate compresses the spring two, and the insert rod is pulled out from the flange one. Then, the flange two is rotated and pulled out, separating the flange two from the clamping block, which realizes the quick disassembly and assembly of the material pipe, and the installation is convenient and quick. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a bearing self-lubricating structure proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the piston structure of a bearing self-lubricating structure proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the locking block of the bearing self-lubricating structure proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the insert rod of a bearing self-lubricating structure proposed in this utility model.

[0029] Legend:

[0030] 1. Base; 2. Motor; 3. Pump housing; 4. Bearing housing; 5. Cam; 6. Outer shell; 7. Spring 1; 8. Piston; 9. Pressure rod; 10. Oil pipe; 11. Check valve; 12. Oil tank; 13. Valve; 14. Flange 1; 15. Clamping block; 16. Flange 2; 17. Material pipe; 18. Sleeve; 19. Insert rod; 20. Slide plate; 21. Spring 2; 22. Pull ring. Detailed Implementation

[0031] 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.

[0032] Reference Figure 1 - Figure 4 The present invention provides an embodiment of a bearing self-lubricating structure, comprising a base 1, a motor 2 fixedly connected to the top of the base 1, a bearing housing 4 rotatably connected to the output end of the motor 2, a pump housing 3 fixedly connected to the left side of the bearing housing 4, the base 1 being used to drive the pump shaft to rotate and provide power to the impeller shoe inside the pump housing 3, the bearing housing 4 having a bearing installed inside to support and protect the pump shaft, the pump housing 3 protecting the internal impeller, a lubrication assembly being installed outside the bearing housing 4, and a connecting assembly being installed between the output end and the input end of the pump housing 3;

[0033] The lubrication assembly includes a cam 5 and a housing 6. The cam 5 is internally fixed to the output end of the motor 2. The bottom of the housing 6 is fixedly connected to the top of the base 1. Two springs 7 are fixedly connected to the inner bottom wall of the housing 6. A piston 8 is fixedly connected between the tops of the two springs 7. A pressure rod 9 is fixedly connected to the top of the piston 8. Oil pipes 10 are fixedly connected to both the front and rear sides of the housing 6. A one-way valve 11 is fixedly connected to the outside of the oil pipes 10. An oil tank 12 is fixedly connected to the input end of the rear oil pipe 10, and a valve 13 is fixedly connected to the outside of the front oil pipe 10. The cam 5 is used to press the pressure rod 9 to move. The housing 6 is used to connect and protect internal parts. The springs 7 are used to push the piston 8 to move. The piston 8 is used to generate positive or negative pressure in the housing 6. The pressure rod 9 is used for… The piston 8 is driven to move. The oil pipe 10 is used to transport lubricating oil. The one-way valve 11 is used to prevent the lubricating oil from flowing back. The oil tank 12 is a container for storing lubricating oil. The valve 13 is used to control the opening and closing of the oil pipe 10. The cam 5 is externally slidably connected to the top of the pressure rod 9, which drives the pressure rod 9 to press the piston 8. The top of the oil pipe 10 is fixedly connected to the top of the bearing housing 4, so that the lubricating oil can be injected into the bearing housing 4. The piston 8 is externally slidably connected to the inner wall of the outer shell 6. The pressure rod 9 is externally slidably connected to the inside of the outer shell 6. The outer shell 6 simultaneously restricts the movement direction of the piston 8 and the pressure rod 9. The oil tank 12 is externally fixedly connected to the inside of the base 1 to keep the oil tank 12 stable. The bottom of the bearing housing 4 is fixedly connected to the top of the base 1 to keep the bearing housing 4 stable.

[0034] Reference Figure 1 - Figure 4The connecting assembly includes a flange 14, which is fixedly connected to the outside of the base 1. Multiple locking blocks 15 are fixedly connected to the outside of flange 14. A flange 26 is slidably connected between the locking blocks 15. A material pipe 17 is fixedly connected inside flange 26. Multiple sleeves 18 are fixedly connected to the outside of flange 26. Insert rods 19 are slidably connected inside sleeves 18. A slide plate 20 is fixedly connected to the outside of insert rods 19. A spring 21 is fixedly connected to the outside of slide plate 20. Pull rings 22 are fixedly connected between the multiple insert rods 19. Flange 14 is used to connect the locking blocks 15, which are used to engage with the inside of flange 26. The locking blocks 15 and the grooves between them are irregularly shaped and relatively deep. Flange 26 is used to fix the material pipe 17, which is used to transport liquid materials. The sleeves 18 are used for... The internal components are connected and protected. The insert rod 19 is used to block the exit of the locking block 15 to prevent it from falling off. The slide plate 20 is used to withstand the thrust from the second spring 21 and drive the insert rod 19 to move synchronously. The second spring 21 is used to push the slide plate 20 to reset. The pull ring 22 is used to facilitate the simultaneous synchronous movement of multiple insert rods 19. The insert rod 19 is externally slidably connected to the outside of the locking block 15 and externally slidably connected to the inside of the second flange 16, both to limit the movement direction of the insert rod 19. The insert rod 19 is externally inserted into the inside of the first flange 14 to keep the first flange 14 stable. The inside of the slide plate 20 and the outside of the second flange 16 abut against each other to limit the movement distance of the second spring 21. The second spring 21 is externally fixedly connected to the inner wall of the housing 18 to keep the second spring 21 stable. The slide plate 20 is externally slidably connected to the inner wall of the housing 18 to limit the movement direction of the slide plate 20.

[0035] Working principle: When using a centrifugal pump to transport liquid materials, first connect the two material pipes 17 to the output and input ends of the pump casing 3 respectively. Align the groove on flange 2 16 with the locking block 15 and insert it. The locking block 15 will push the insertion rod 19 outward, causing the sliding plate 20 to compress the spring 21. Then rotate flange 2 16 to make the locking block 15 lock into the deep part of flange 2 16. At this time, the spring 21 will immediately push the sliding plate 20 to pop out the insertion rod 19 and insert it into the inside of flange 1 14, blocking the retreat of the locking block 15 and achieving fixation. At this time, the centrifugal pump can be used to work. By controlling the rotation of motor 2, the pump shaft is driven to rotate. Under the support of the bearing, the impeller inside the pump casing 3 rotates, thereby realizing the transportation of materials. When it is necessary to remove the material pipe 17, simply pull the pull ring 22, rotate flange 2 16 in the opposite direction, and then pull it out. When lubricating the bearings inside the bearing housing 4, opening valve 13 causes spring 7 to instantly push piston 8, creating positive pressure inside the housing 6 and initiating oil pumping. Simultaneously, as motor 2 rotates, it drives cam 5 to rotate, continuously pressing pressure rod 9, which in turn compresses spring 7, creating negative pressure in housing 6 and initiating oil suction. This, combined with two one-way valves 11, allows the lubricating oil in oil tank 12 to be transported along oil pipe 10 to the bearing housing 4 for lubrication, enabling continuous oil addition without stopping the machine. After adding oil, simply closing valve 13 prevents the lubricating oil from exiting housing 6, keeping it inside. Furthermore, piston 8 compresses spring 7 from the lower side of housing 6, preventing cam 5 from contacting pressure rod 9, making operation convenient and labor-saving.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bearing self-lubricating structure comprising a base (1), characterized in that: A motor (2) is fixedly connected to the top of the base (1), and a bearing housing (4) is rotatably connected to the output end of the motor (2). A pump housing (3) is fixedly connected to the left side of the bearing housing (4). A lubrication assembly is installed on the outside of the bearing housing (4). A connecting assembly is installed between the output end and the input end of the pump housing (3). The lubrication assembly includes a cam (5) and a housing (6). The cam (5) is fixedly connected to the output end of the motor (2). The bottom of the housing (6) is fixedly connected to the top of the base (1). Two springs (7) are fixedly connected to the bottom wall of the housing (6). A piston (8) is fixedly connected between the tops of the two springs (7). A pressure rod (9) is fixedly connected to the top of the piston (8). Oil pipes (10) are fixedly connected to both the front and rear sides of the housing (6). A one-way valve (11) is fixedly connected to the outside of the oil pipes (10). An oil tank (12) is fixedly connected to the input end of the rear oil pipe (10). A valve (13) is fixedly connected to the outside of the front oil pipe (10).

2. A bearing self-lubricating structure according to claim 1, characterized in that: The connecting assembly includes a flange (14), the inner side of which is fixedly connected to the outside of the base (1). Multiple locking blocks (15) are fixedly connected to the outside of the flange (14). A flange (16) is slidably connected between the multiple locking blocks (15). A material pipe (17) is fixedly connected inside the flange (16). Multiple sleeves (18) are fixedly connected to the outside of the flange (16). Insert rods (19) are slidably connected inside the sleeves (18). A sliding plate (20) is fixedly connected to the outside of the insert rods (19). A spring (21) is fixedly connected to the outside of the sliding plate (20). Pull rings (22) are fixedly connected between the multiple insert rods (19).

3. The bearing self-lubricating structure according to claim 1, characterized in that: The cam (5) is externally slidably connected to the top of the pressure rod (9), and the top of the oil pipe (10) is fixedly connected to the top of the bearing housing (4).

4. The bearing self-lubricating structure according to claim 1, wherein: The piston (8) is externally slidably connected to the inner wall of the housing (6), and the pressure rod (9) is externally slidably connected to the inside of the housing (6).

5. The bearing self-lubricating structure according to claim 1, wherein: The oil tank (12) is externally fixedly connected to the inside of the base (1), and the bottom of the bearing housing (4) is fixedly connected to the top of the base (1).

6. The bearing self-lubricating structure according to claim 2, wherein: The insertion rod (19) is externally slidably connected to the outside of the card block (15), and the insertion rod (19) is externally slidably connected to the inside of the flange (16).

7. The bearing self-lubricating structure according to claim 2, wherein: The insertion rod (19) is inserted into the inside of the first flange (14), and the inner side of the sliding plate (20) and the outer side of the second flange (16) abut against each other.

8. The bearing self-lubricating structure according to claim 2, wherein: The second spring (21) is externally fixedly connected to the inner wall of the housing (18), and the sliding plate (20) is externally slidably connected to the inner wall of the housing (18).

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