Cantilever type water pump

Abstract

The utility model relates to the technical field of water pumps, in particular to a cantilever type water pump which comprises a pump shell, a water inlet is formed in one end of the pump shell, and a water outlet is formed in the top of the pump shell. An impeller is arranged in the pump shell and installed on a driving shaft, the driving shaft penetrates through the end, away from the water inlet, of the pump shell and is connected with a driving motor, and the driving shaft is rotationally connected with the pump shell. An oil storage tank is arranged between the pump shell and the driving motor and comprises a first outer shell and a second outer shell, and the first outer shell and the second outer shell are conical shells with opposite wide openings. When the cantilever type water pump is used, the cantilever type water pump drives the connecting plate to rotate together through the driving shaft, so that lubricating oil located at the bottom of the shell is scooped out, and the lubricating oil is thrown out from the side face of the connecting plate to fall on a bearing of the driving shaft under the centrifugal effect, so that sufficient lubrication is guaranteed for rotation of the driving shaft; and the lubricating oil in the shell can be fully used.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to a cantilever water pump. Background Art

[0002] Cantilever pumps are a common type of pump, widely used in both industrial and residential applications. Unlike other pump types, their impeller is not mounted on the shaft, but suspended from the side. This design allows cantilever pumps to achieve higher flow rates and greater head, making them a popular choice for many applications.

[0003] When a cantilever water pump is working, in order to ensure the stable rotation of the impeller driven by the rotating shaft, the rotating shaft will be rotatably connected to the water pump casing through the bearing and then connected to the motor. However, as the motor drives the rotating shaft to rotate at a high speed, the lubricating oil on the bearing will be consumed too quickly. In addition, the lubricating oil is difficult to replenish when the water pump is working, which will cause the water pump's performance to decline and even damage. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned shortcomings in the prior art and to propose a cantilever water pump.

[0005] In order to achieve the above object, the utility model adopts the following technical solution: a cantilever water pump is designed, comprising a pump casing, a water inlet is opened at one end of the pump casing, and a drain outlet is installed at the top of the pump casing;

[0006] An impeller is provided inside the pump housing, the impeller is mounted on a drive shaft, and the drive shaft passes through the end of the pump housing away from the water inlet and is connected to a drive motor, and the drive shaft is rotatably connected to the pump housing;

[0007] An oil storage tank is provided between the pump housing and the drive motor. The oil storage tank includes a first shell and a second shell. The first shell and the second shell are both tapered shells with wide openings arranged opposite to each other. The first shell and the second shell are fixedly connected, and the other end of the first shell is fixed to the pump housing, and the other end of the second shell is rotatably connected to the drive shaft.

[0008] A number of spaced connecting plates are provided between the first and second outer shells. The connecting plates are fixed to the drive shaft along the axial and radial directions of the drive shaft, and an arc-shaped plate coaxially arranged with the drive shaft is installed on the other end of the connecting plate. Inclined surfaces are provided on both sides of the side of the connecting plate, so that the cross-section of the connecting plate is diamond-shaped.

[0009] Preferably, an inclined guide plate is provided at the top of the first shell and the top of the second shell, the top of the guide plate is fixed to the corresponding first shell and the second shell respectively, and the bottom of the guide plate is arranged toward the drive shaft.

[0010] Preferably, a plurality of guide grooves arranged at intervals are provided on the side surface of the connecting plate, and the guide grooves are arranged along the axial direction of the driving shaft.

[0011] Preferably, the first housing and the second housing are connected via a flange.

[0012] Preferably, an oil filling port is installed on a side of the top of the second housing close to the first housing, and a sealing cover is installed on the top of the oil filling port.

[0013] Preferably, an oil dipstick is installed at the bottom of the sealing cover, and the bottom of the oil dipstick is placed at the bottom of the second housing.

[0014] Preferably, connecting flanges are installed on both the water inlet and the drain outlet.

[0015] Preferably, a mounting frame is provided below the pump housing, and the pump housing and the drive motor are both mounted on the mounting frame.

[0016] The design scheme proposed by the utility model has the following beneficial effects during application:

[0017] 1. When the cantilever water pump is operating, it drives the connecting plate to rotate inside the casing to scoop out the lubricating oil at the bottom of the casing. As the drive shaft rotates, the centrifugal effect causes the lubricating oil to be thrown out from the side of the connecting plate and fall onto the bearing of the drive shaft, ensuring that the rotation of the drive shaft has sufficient lubrication and that the lubricating oil in the casing is fully used.

[0018] 2. When the lubricating oil is thrown out from the connecting plate, the lubricating oil falling on the top of the shell will slide along the inclined surface toward the drive shaft. The setting of the guide plate can partially collect the lubricating oil, allowing the lubricating oil to flow accurately to the drive shaft to ensure the lubrication of the bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0021] Figure 3 This is a diagram of the internal structure of the shell of the utility model;

[0022] Figure 4 This is a structural diagram of the connecting plate of the present utility model.

[0023] In the figure: 1. Pump casing; 2. Water inlet; 3. Discharge outlet; 4. Impeller; 5. Drive shaft; 6. First outer casing; 7. Guide plate; 8. Second outer casing; 9. Mounting frame; 10. Connecting plate; 11. Arc plate; 12. Inclined slope; 13. Guide groove; 14. Drive motor; 15. Oil filling port; 16. Sealing cover; 17. Oil dipstick. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Reference Figures 1-4 A cantilever water pump comprises a pump casing 1, a water inlet 2 is provided at one end of the pump casing 1, a drain outlet 3 is installed at the top of the pump casing 1, and connecting flanges are installed on the water inlet 2 and the drain outlet 3 for installing water pipes on the water inlet 2 and the drain outlet 3;

[0026] like Figure 2 and Figure 3 As shown, an impeller 4 is provided inside the pump casing 1, and the impeller 4 is mounted on a drive shaft 5. The drive shaft 5 passes through the end of the pump casing 1 away from the water inlet 2 and is connected to a drive motor 14. The drive shaft 5 is rotatably connected to the pump casing 1. Under the operation of the drive motor 14, the impeller 4 is driven to rotate, thereby drawing water into the pump casing 1 from the water inlet 2 and discharging it from the drain outlet 3.

[0027] An oil storage tank is arranged between the pump casing 1 and the drive motor 14, and the oil storage tank includes a first shell 6 and a second shell 8. The first shell 6 and the second shell 8 are both conical shells with wide mouths arranged opposite to each other, and the first shell 6 and the second shell 8 are connected by a flange, so that the oil storage tank is a box body with a wide middle part and narrow ends. The other end of the first shell 6 is fixed on the pump casing 1, and the other end of the second shell 8 is rotatably connected to the drive shaft 5. An oil filling port 15 is installed on the top of the second shell 8 close to the first shell 6, and a sealing cover 16 is installed on the top of the oil filling port 15, so that lubricating oil can be added into the oil storage tank from the oil filling port 15, and the drive shaft 5 can be immersed in the lubricating oil, thereby lubricating the bearings on the drive shaft 5.

[0028] It should be noted that an oil dipstick 17 is installed at the bottom of the sealing cover 16. The bottom of the oil dipstick 17 is placed at the bottom of the second shell 8, which can measure the oil amount in the oil tank so that lubricating oil can be added in time.

[0029] If the lubricating oil in the oil storage tank is lower than the drive shaft 5, a plurality of spaced connecting plates 10 are provided between the first shell 6 and the second shell 8. The connecting plate 10 is fixed on the drive shaft 5 along the longitudinal and radial directions of the drive shaft 5, and an arc-shaped plate 11 coaxially arranged with the drive shaft 5 is installed on the other end of the connecting plate 10, and inclined surfaces 12 are provided on both sides of the side of the connecting plate 10, so that the cross section of the connecting plate 10 is diamond-shaped. As the drive shaft 5 rotates, the connecting plate 10 can also rotate at high speed, so that the lubricating oil can be scooped out from the bottom of the oil storage tank under the action of the "L"-shaped structure of the arc plate 11 and the connecting plate 10, and under the action of inertia and centrifugal force, the lubricating oil is thrown out from the side of the connecting plate 10 and falls on the inner wall of the shell, and the lubricating oil falling on the top of the shell can slide along the inclined inner wall of the shell, and then fall on the bearing of the drive shaft 5, thereby realizing lubrication of the bearing.

[0030] Specifically, in order to ensure that the lubricating oil can flow better to the bearing, an inclined guide plate 7 is provided at the top of the first housing 6 and the top of the second housing 8. The top of the guide plate 7 is fixed to the corresponding first housing 6 and the second housing 8, respectively, and the bottom of the guide plate 7 is arranged toward the drive shaft 5 to guide the thrown lubricating oil. Figure 4 As shown, a plurality of guide grooves 13 are arranged at intervals on the side of the connecting plate 10. The guide grooves 13 are arranged along the axial direction of the drive shaft 5 to guide the direction in which the lubricating oil is thrown out from the connecting plate 10, so that more lubricating oil can fall on the guide plate 7 and then flow to the bearing, thereby ensuring the stable rotation of the drive shaft 5.

[0031] Specifically, a mounting frame 9 is provided below the pump housing 1 , and the pump housing 1 and the drive motor 14 are both mounted on the mounting frame 9 for installation of the water pump.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cantilever water pump, characterized in that: It comprises a pump casing (1), a water inlet (2) is provided at one end of the pump casing (1), and a drain outlet (3) is installed at the top of the pump casing (1); An impeller (4) is provided inside the pump housing (1), the impeller (4) is mounted on a drive shaft (5), and the drive shaft (5) passes through an end of the pump housing (1) away from the water inlet (2) and is connected to a drive motor (14), and the drive shaft (5) is rotatably connected to the pump housing (1); An oil storage tank is provided between the pump housing (1) and the drive motor (14), and the oil storage tank includes a first housing (6) and a second housing (8), the first housing (6) and the second housing (8) being conical housings with wide openings arranged opposite to each other, and the first housing (6) and the second housing (8) are fixedly connected, the other end of the first housing (6) being fixed to the pump housing (1), and the other end of the second housing (8) being rotatably connected to the drive shaft (5); A plurality of spaced connecting plates (10) are provided between the first housing (6) and the second housing (8). The connecting plates (10) are fixed to the drive shaft (5) along the longitudinal and radial directions of the drive shaft (5). An arc-shaped plate (11) coaxially arranged with the drive shaft (5) is installed on the other end of the connecting plate (10). Inclined surfaces (12) are provided on both sides of the side of the connecting plate (10), so that the cross section of the connecting plate (10) is diamond-shaped.

2. A cantilever water pump according to claim 1, characterized in that: A guide plate (7) is provided at the top of the first housing (6) and the top of the second housing (8). The top of the guide plate (7) is fixed to the corresponding first housing (6) and the second housing (8), respectively, while the bottom of the guide plate (7) is arranged toward the drive shaft (5).

3. The cantilever water pump according to claim 1, characterized in that: A plurality of guide grooves (13) arranged at intervals are provided on the side surface of the connecting plate (10), and the guide grooves (13) are arranged along the axial direction of the drive shaft (5).

4. The cantilever water pump according to claim 1, characterized in that: The first housing (6) and the second housing (8) are connected via a flange.

5. The cantilever water pump according to claim 1, characterized in that: An oil filling port (15) is installed on a side of the top of the second housing (8) close to the first housing (6), and a sealing cover (16) is installed on the top of the oil filling port (15).

6. The cantilever water pump according to claim 5, characterized in that: An oil dipstick (17) is installed at the bottom of the sealing cover (16), and the bottom of the oil dipstick (17) is placed at the bottom of the second housing (8).

7. The cantilever water pump according to claim 1, characterized in that: Connecting flanges are installed on the water inlet (2) and the drain outlet (3).

8. The cantilever water pump according to claim 1, characterized in that: A mounting frame (9) is provided below the pump housing (1), and the pump housing (1) and the drive motor (14) are both mounted on the mounting frame (9).

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