Vertical sewage pump with good heat dissipation function of bearing

Abstract

The utility model discloses a vertical sewage pump with a good heat dissipation function of a bearing. The vertical sewage pump comprises a bearing seat, a pump shaft, a pump cover, a heat dissipation assembly and a flow guide assembly. The bearing seat is sleeved on the outer side of the pump shaft; the upper end of the pump shaft is connected with the bearing seat through an upper bearing; the lower end of the pump shaft is connected with the bearing seat through a lower bearing; the lower end of the bearing seat is connected with the pump cover; the top of the pump shaft extends out of the top of the bearing seat; the heat dissipation assembly and the flow guide assembly are both arranged on the upper portion of the bearing seat. The flow guide assembly is arranged on the outer side of the heat dissipation assembly. The structure enhances the heat dissipation effect of the bearing, prolongs the service life of the bearing, and improves the operation reliability of the vertical sewage pump.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic machinery, in particular to a vertical sewage pump with a good heat dissipation function of a bearing. Background Art

[0002] With the vigorous development of urbanization, the construction and upgrading of sewage treatment plants, the demand for water pumps is increasing. Water pumps are the power source that provides potential energy and pressure energy for water and solves the problems of drainage, irrigation, water supply and water resource allocation under non-self-flow conditions. There are many types of water pumps, among which vertical sewage pumps are one of them. Vertical sewage pumps are used in dry environments. The motor is cooled by air and the interface pipes are sealed with flanges to ensure stable and reliable use. In addition, the running status of the water pump is easy to observe and easy to maintain. The vertical sewage pump consists of a motor part and a pump head part. The two are connected by a motor frame and a coupling. The pump head part mainly includes: bearing seat, pump shaft, pump cover, impeller, volute and base. Upper and lower bearings are installed on the bearing seat. The bearing seat position at the lower bearing is immersed in the pump cover oil chamber. Its bearing can be cooled by the mechanical oil in the pump cover oil chamber. The bearing seat at the upper bearing is exposed to the air, and the surrounding air basically does not flow when the water pump is running. Therefore, the heat generated by the bearing on the bearing seat cannot be dissipated well, resulting in poor heat dissipation of the bearing, affecting the service life of the bearing, and further affecting the reliability of the water pump operation. Summary of the invention

[0003] Technical problem: The technical problem to be solved by the utility model is to provide a vertical sewage pump with good heat dissipation function of the bearing, enhance the heat dissipation effect of the bearing, increase the service life of the bearing, and increase the operating reliability of the vertical sewage pump.

[0004] Technical solution: To solve the above technical problems, the technical solution adopted by the embodiment of the utility model is:

[0005] A vertical sewage pump with good bearing heat dissipation function, comprising a bearing seat, a pump shaft, a pump cover, a heat dissipation component and a guide component; the bearing seat is sleeved on the outside of the pump shaft; the upper end of the pump shaft is connected to the bearing seat through an upper bearing; the lower end of the pump shaft is connected to the bearing seat through a lower bearing; the lower end of the bearing seat is connected to the pump cover; the top end of the pump shaft extends out of the top end of the bearing seat; the heat dissipation component and the guide component are both arranged on the upper part of the bearing seat; the guide component is arranged on the outside of the heat dissipation component.

[0006] As a preferred example, the heat dissipation assembly includes a fan and a rib plate; the fan is arranged on the pump shaft outside the top end of the bearing seat, and the fan rotates synchronously with the pump shaft; the rib plate is arranged on the outer surface of the bearing seat; there is a gap between the bottom end of the fan and the top end of the bearing seat.

[0007] As a preferred example, the air guide assembly includes an air guide cover, an air guide plate and a connecting plate; the air guide cover is a hollow circular ring structure; the air guide cover is sleeved on the outer side of the bearing seat; the air guide cover is fixedly connected to the bearing seat through a connecting plate; the air guide plate is arranged on the inner surface of the air guide cover; there is a gap between the side of the fan and the inner surface of the air guide cover.

[0008] As a preferred example, the number of the ribs is N, N≥10; the ribs are evenly distributed on the circumference of the outer surface of the bearing seat.

[0009] As a preferred example, the number of the guide plates is M, M≥6; the guide plates are evenly distributed on the inner surface of the guide cover along the circumferential direction.

[0010] As a preferred example, the guide plates and rib plates are staggered.

[0011] As a preferred example, the upper end of the air deflector is an air inlet, and the lower end is an air outlet; the air inlet and the air outlet are both configured as an outwardly curved arc structure.

[0012] Beneficial effects: Compared with the prior art, the technical solution of the utility model has the following beneficial effects: the technical solution of the utility model arranges a fan above the bearing seat, so that the fan and the pump shaft rotate synchronously. When the pump shaft is running, the fan forms a downward-flowing cold wind to cool the bearing seat and the internal bearings, so that the bearings achieve good heat dissipation effect, improve the safety and service life of the bearings, and increase the operating reliability of the sewage pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of an embodiment of the utility model;

[0014] Figure 2 yes Figure 1 Sectional view of AA in the middle;

[0015] The figure includes: a fan 1, a guide cover 2, a guide plate 201, a connecting plate 202, a bearing seat 3, a rib plate 301, a pump shaft 4, and a pump cover 5. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings.

[0017] like Figure 1As shown, a vertical sewage pump with good bearing heat dissipation function according to an embodiment of the utility model comprises a bearing seat 3, a pump shaft 4, a pump cover 5, a heat dissipation component and a flow guide component; the bearing seat 3 is sleeved on the outside of the pump shaft 4; the upper end of the pump shaft 4 is connected to the bearing seat 3 through an upper bearing; the lower end of the pump shaft 4 is connected to the bearing seat 3 through a lower bearing; the lower end of the bearing seat 3 is connected to the pump cover 5; the top end of the pump shaft 4 extends out of the top end of the bearing seat 3; the heat dissipation component and the flow guide component are both arranged on the upper part of the bearing seat 3; the flow guide component is arranged on the outside of the heat dissipation component.

[0018] In a vertical sewage pump with a good bearing heat dissipation function of the above structure, the effect of heat dissipation of the bearing seat and the bearing is achieved by setting a fan 1 on the top of the bearing seat 3. The fan 1 is set on the pump shaft 4 and rotates synchronously with the pump shaft 4. When the pump shaft rotates, the fan 1 forms cold wind blowing downward, thereby cooling the bearing. At the same time, a deflector 2 is provided on the outside of the bearing seat 3, so that the cold wind formed by the fan 1 will not diffuse to the outside, but gather around the bearing seat 3, thereby achieving a better heat dissipation effect. After the downward-flowing cold wind cools the bearing, it diffuses outward from the deflector 2, thereby forming a continuous and stable heat dissipation for the bearing. This structure enhances the heat dissipation effect of the bearing, improves the operating stability and service life of the bearing, and increases the operating reliability of the vertical sewage pump.

[0019] When the pump body is running, the pump shaft 3 drives the fan 1 to rotate, so that the airflow enters from the air inlet of the air guide cover 2 and flows downward along the air duct formed between the air guide cover 2 and the bearing seat 3. When the airflow flows downward, it is divided into several small airflows by the guide plate 201 on the air guide cover 2 and the rib plate 301 on the bearing seat 3; so that the airflow can fully contact the outer wall of the bearing seat 3, and the airflow can stay in the air duct for a longer time; thereby taking away more heat from the air outlet of the air guide cover 2, forming a cycle of airflow in and out. The water pump keeps running, and the heat is continuously taken away, thereby achieving the effect of cooling and dissipating the heat of the bearing. Ensure the stability and safety of the bearing operation, thereby improving the reliability of the sewage pump operation.

[0020] As a preferred example, the heat dissipation assembly includes a fan 1 and a rib plate 301; the fan is arranged on the pump shaft 4 outside the top of the bearing seat 3, and the fan 1 rotates synchronously with the pump shaft 4; the rib plate 301 is arranged on the outer surface of the bearing seat 3; there is a gap between the bottom end of the fan 1 and the top end of the bearing seat 3. The fan 1 and the pump shaft 4 can rotate synchronously. When the pump shaft 4 rotates, the fan blows air around the outer wall of the bearing seat 3 to make the air flow, and the cold and hot air flows are constantly exchanged, which has a cooling and heat dissipation effect on the bearing. The rib plate 301 can increase the contact area between the bearing seat 3 and the air, thereby expanding the heat dissipation area. The gap between the bottom end of the fan 1 and the top end of the bearing seat 3 can ensure that the fan 1 can smoothly rotate synchronously with the pump shaft 4.

[0021] As a preferred example, the deflector assembly includes a deflector 2, a deflector plate 201 and a connecting plate 202; the deflector 2 is a hollow ring structure; the deflector 2 is sleeved on the outer side of the bearing seat 3; the deflector 2 is fixedly connected to the bearing seat 3 through the connecting plate 202; the deflector plate 201 is arranged on the inner surface of the deflector 2; and there is a gap between the side of the fan 1 and the inner surface of the deflector 2. The deflector 2 is arranged on the outer side of the bearing seat 3, and the deflector 2 and the bearing seat 3 are relatively fixed. The arrangement of the deflector 2 can ensure that the airflow is concentrated in the channel formed by the deflector 2 and the outer side of the bearing seat 3, thereby enhancing the heat dissipation effect. The deflector plate 201 is arranged inside the deflector 2 to enhance the heat dissipation effect. There is a gap between the side of the fan 1 and the inner surface of the deflector 2, thereby ensuring that the fan 1 can smoothly rotate synchronously with the pump shaft 4, so that the cold wind formed by the rotation can smoothly enter the air duct formed by the deflector 2 and the bearing seat 3.

[0022] As a preferred example, the number of the ribs 301 is N, N≥10; the ribs 301 are evenly distributed on the circumference of the outer surface of the bearing seat 3. Providing multiple ribs 301 can increase the contact area between the bearing seat 3 and the air, thereby expanding the heat dissipation area, so that the fan 1 has a better heat dissipation effect on the bearing; at the same time, the ribs 301 are evenly distributed on the circumference of the outer surface of the bearing seat 3, which can ensure the heat dissipation effect of the fan 1 on the bearing, while making the heat dissipation of the fan 1 on the bearing more uniform.

[0023] As a preferred example, the number of the guide plates 201 is M, M≥6; the guide plates 201 are evenly distributed along the circumferential direction on the inner surface of the air guide cover 2. The cooperation of the multiple guide plates 201 and the rib plates 301 increases the contact area between the cold air blown by the fan 1 and the bearing seat 3, and at the same time makes the cold air stay on the surface of the bearing seat 3 for a longer time, thereby improving the heat dissipation efficiency.

[0024] As a preferred example, the guide plate 201 and the rib plate 301 are staggered. The guide plate 201 and the rib plate 301 on the bearing seat 3 are staggered. The guide plate 201 and the rib plate 301 can separate the airflow into multiple small airflows, so that the small airflows can fully and evenly contact the outer wall of the bearing seat 3, thereby enhancing the heat dissipation effect.

[0025] As a preferred example, the upper end of the air deflector 2 is an air inlet, and the lower end is an air outlet; the air inlet and the air outlet are both configured as arc structures that bend outward. The air inlet and the air outlet of the air deflector 2 are respectively configured as arcs, which are more conducive to the entry and exit of airflow, forming an airflow cycle, thereby achieving continuous and stable heat dissipation of the bearing.

[0026] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above specific embodiments. The above specific embodiments and the description in the specification are only for further illustrating the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the claims and their equivalents.

Claims

1. A vertical sewage pump with good heat dissipation function of the bearing, characterized in that: The pump comprises a bearing seat (3), a pump shaft (4), a pump cover (5), a heat dissipation component and a flow guide component; the bearing seat (3) is sleeved on the outer side of the pump shaft (4); the upper end of the pump shaft (4) is connected to the bearing seat (3) via an upper bearing; the lower end of the pump shaft (4) is connected to the bearing seat (3) via a lower bearing; the lower end of the bearing seat (3) is connected to the pump cover (5); the top end of the pump shaft (4) extends out of the top end of the bearing seat (3); the heat dissipation component and the flow guide component are both arranged on the upper part of the bearing seat (3); and the flow guide component is arranged on the outer side of the heat dissipation component.

2. The vertical sewage pump according to claim 1, characterized in that: The heat dissipation component comprises a fan (1) and a rib plate (301); the fan is arranged on a pump shaft (4) outside the top end of a bearing seat (3), and the fan (1) rotates synchronously with the pump shaft (4); the rib plate (301) is arranged on the outer surface of the bearing seat (3); and there is a gap between the bottom end of the fan (1) and the top end of the bearing seat (3).

3. The vertical sewage pump according to claim 2, characterized in that: The air guide assembly comprises an air guide cover (2), an air guide plate (201) and a connecting plate (202); the air guide cover (2) is a hollow circular ring structure; the air guide cover (2) is sleeved on the outer side of the bearing seat (3); the air guide cover (2) is fixedly connected to the bearing seat (3) via the connecting plate (202); the air guide plate (201) is arranged on the inner surface of the air guide cover (2); and there is a gap between the side of the fan (1) and the inner surface of the air guide cover (2).

4. The vertical sewage pump according to claim 2, characterized in that: The number of the rib plates (301) is N, where N≥10; the rib plates (301) are evenly distributed on the circumference of the outer surface of the bearing seat (3).

5. The vertical sewage pump according to claim 3, characterized in that: The number of the guide plates (201) is M, where M is greater than or equal to 6; the guide plates (201) are evenly distributed on the inner surface of the guide cover (2) along the circumferential direction.

6. The vertical sewage pump according to claim 3, characterized in that: The guide plate (201) and the rib plate (301) are arranged in a staggered manner.

7. The vertical sewage pump according to claim 3, characterized in that: The upper end of the air deflector (2) is an air inlet, and the lower end is an air outlet; the air inlet and the air outlet are both arranged as an arc-shaped structure that bends outwards.

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