Vertical centrifugal pump

Abstract

The utility model discloses a vertical centrifugal pump which comprises a pump shaft, a bearing support is arranged above the pump shaft, a main bearing is installed in a bearing chamber in the bearing support, the inner wall of the main bearing is detachably connected with the outer wall of the pump shaft, and a water cooling cavity is machined in the bearing support. A water inlet pipe is arranged on one side of the bearing support, a water outlet pipe is arranged on the side, away from the water inlet pipe, of the bearing support, and a first gear is installed on the outer wall of the pump shaft. The utility model relates to the technical field of centrifugal pumps, in particular to a vertical centrifugal pump which can cool a main bearing in a water cooling mode through the cooperation of a bearing support, a water cooling cavity, a water inlet pipe, a water outlet pipe, a pump shaft, a first gear, a second gear and a third gear, and further can prevent the main bearing from being damaged due to long-time high-temperature work. And therefore, the service life of the main bearing can be prolonged, the damage rate of the centrifugal pump can be greatly reduced, and convenience is brought to the use of workers.

Description

Technical Field

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

[0002] Centrifugal pumps are available in vertical, horizontal, single-stage, multi-stage, single-suction, double-suction, self-priming and other forms. Centrifugal pumps work by using the rotation of the impeller to cause the water to undergo centrifugal motion. Before starting the water pump, the pump casing and the water suction pipe must be filled with water, and then the motor is started so that the pump shaft drives the impeller and water to rotate at high speed. The water undergoes centrifugal motion and is thrown to the outer edge of the impeller, and flows into the water pressure pipeline of the water pump through the flow channel of the volute pump casing.

[0003] When a traditional centrifugal pump is in use, its bearing components will rotate at high speed, which will cause its working temperature to be high, and the operating environment of the bearing will directly affect the service life of the bearing. However, the existing centrifugal pump cannot cool the bearing components of the centrifugal pump, making the bearing prone to damage, thereby increasing the loss rate of the centrifugal pump, thus causing inconvenience to the staff. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a vertical centrifugal pump, which solves the problem that the bearing components of the traditional centrifugal pump rotate at high speed when in use, which will cause the temperature to be high during operation, and the operating environment of the bearing will directly affect the service life of the bearing. However, the existing centrifugal pump cannot cool the bearing components of the centrifugal pump, which makes the bearing prone to damage, thereby increasing the loss rate of the centrifugal pump, thereby causing inconvenience to the staff.

[0005] To achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: a vertical centrifugal pump, including a pump shaft, a bearing bracket is arranged above the pump shaft, a main bearing is installed in the bearing chamber inside the bearing bracket, the inner wall of the main bearing is detachably connected to the outer wall of the pump shaft, a water-cooling cavity is processed inside the bearing bracket, a water inlet pipe is arranged on one side of the bearing bracket, and a water outlet pipe is arranged on the side of the bearing bracket away from the water inlet pipe, a first gear is installed on the outer wall of the pump shaft, a second gear is meshed on the outer wall of the first gear, and the outer wall of the second gear is rotatably connected to the inner wall of the bearing bracket through a sealed bearing, a third gear is installed on the top of the second gear, and a fan blade is meshed on the outer wall of the third gear and rotatably connected to the inner wall of the bearing bracket through a sealed bearing.

[0006] Preferably, a pump coupling is installed at the end of the pump shaft, and a pump housing is installed below the bearing bracket.

[0007] Preferably, a dust cover is installed above the bearing bracket, the inner wall of the dust cover is movably connected to the outer wall of the pump shaft, a first felt ring is installed on the inner wall of the dust cover, and a second felt ring movably connected to the outer wall of the pump shaft is installed below the inner part of the bearing bracket.

[0008] Preferably, an oil replenishing pipe is installed above the side of the bearing bracket close to the water inlet pipe. Beneficial Effects

[0009] The utility model provides a vertical centrifugal pump. It has the following beneficial effects: the vertical centrifugal pump can cool the main bearing by water cooling through the cooperation of the bearing bracket, the water cooling cavity, the water inlet pipe, the water outlet pipe, the pump shaft, the first gear, the second gear and the third gear, thereby avoiding damage to the main bearing due to long-term high-temperature labor, thereby extending the service life of the main bearing, and greatly reducing the damage rate of the centrifugal pump, thus bringing convenience to the staff;

[0010] Through the cooperation of the dust cover, the first felt ring, the second felt ring and the oil supply pipe, external dust can be prevented from entering the interior of the main bearing, thereby preventing the main bearing from being damaged by the influence of dust. Lubrication work can also be carried out more conveniently, which can improve the convenience of use for the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 for Figure 1 A cross-sectional view of

[0013] Figure 3 for Figure 2 Schematic diagram of the structure of the middle bearing bracket, fan blades and the third gear;

[0014] Figure 4 for Figure 2 Schematic diagram of the structure of the middle bearing bracket, oil supply pipe and dust cover.

[0015] In the figure: 1. pump shaft, 2. bearing bracket, 3. main bearing, 4. water-cooling chamber, 5. water inlet pipe, 6. water outlet pipe, 7. pump coupling, 8. first gear, 9. second gear, 10. third gear, 11. fan blade, 12. bearing chamber, 13. oil supply pipe, 14. second felt ring, 15. first felt ring, 16. dust cover, 17. pump casing. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.

[0018] When a traditional centrifugal pump is in use, its bearing components rotate at high speed, which will cause the working temperature to be high, and the operating environment of the bearing will directly affect the service life of the bearing. However, the existing centrifugal pump cannot cool the bearing components of the centrifugal pump, making the bearing prone to damage, thereby increasing the loss rate of the centrifugal pump, thus causing inconvenience to the staff;

[0019] In view of this, the utility model provides a vertical centrifugal pump, which can cool the main bearing by water cooling through the cooperation of the bearing bracket, the water cooling chamber, the water inlet pipe, the water outlet pipe, the pump shaft, the first gear, the second gear and the third gear, thereby avoiding damage to the main bearing due to long-term high-temperature work, thereby extending the service life of the main bearing, and greatly reducing the damage rate of the centrifugal pump, thereby bringing convenience to the staff.

[0020] Embodiment 1: Figure 1 , 2 , 3 and 4 show that a vertical centrifugal pump comprises a pump shaft 1, a bearing support 2 is arranged above the pump shaft 1, a main bearing 3 is installed in a bearing chamber 12 inside the bearing support 2, the inner wall of the main bearing 3 is detachably connected to the outer wall of the pump shaft 1, a water cooling chamber 4 is processed inside the bearing support 2, a water inlet pipe 5 is arranged on one side of the bearing support 2, a water outlet pipe 6 is arranged on the side of the bearing support 2 away from the water inlet pipe 5, a first gear 8 is installed on the outer wall of the pump shaft 1, a second gear 9 is meshed on the outer wall of the first gear 8, the outer wall of the second gear 9 is rotatably connected to the inner wall of the bearing support 2 through a sealed bearing, a third gear 10 is installed on the top of the second gear 9, and a fan blade 11 rotatably connected to the inner wall of the bearing support 2 through a sealed bearing is meshed on the outer wall of the third gear 10;

[0021] In the specific implementation process, it is worth pointing out that the staff can inject external cooling water into the water inlet cooling chamber 4 through the water inlet pipe 5, and then cool the main bearing 3 through heat conduction, and then the cooled water source can be discharged from the inside of the bearing bracket 2 through the water outlet pipe 6, and the first gear 8 can drive the third gear 10 to rotate through the second gear 9, and then drive the fan blade 11 to rotate, so as to speed up the flow rate of the water source inside the water cooling chamber 4, thereby improving the cooling efficiency;

[0022] Furthermore, a pump coupling 7 is installed at the end of the pump shaft 1, and a pump housing 17 is installed below the bearing bracket 2;

[0023] In the specific implementation process, it is worth pointing out that the pump coupling 7 can ensure the coaxiality between the motor and the blades, reduce friction, reduce power consumption, and increase efficiency;

[0024] Furthermore, a dust cover 16 is installed above the bearing bracket 2, the inner wall of the dust cover 16 is movably connected to the outer wall of the pump shaft 1, a first felt ring 15 is installed on the inner wall of the dust cover 16, and a second felt ring 14 movably connected to the outer wall of the pump shaft 1 is installed at the lower part of the bearing bracket 2;

[0025] In the specific implementation process, it is worth pointing out that the first felt ring 15, the second felt ring 14 and the dust cover 16 can isolate and protect the main bearing 3 to prevent dust from entering the interior of the main bearing 3;

[0026] Furthermore, an oil replenishing pipe 13 is installed above the side of the bearing bracket 2 close to the water inlet pipe 5;

[0027] In the specific implementation process, it is worth pointing out that the staff can add lubricating oil into the interior of the main bearing 3 through the oil replenishing pipe 13, thereby improving the use quality of the main bearing 3;

[0028] Specifically, when the vertical centrifugal pump is used, when the pump shaft 1 rotates, the main bearing 3 begins to follow the movement. At this time, the staff uses the water inlet pipe 5 to inject cooling water into the water-cooling chamber 4, and then the main bearing 3 can be cooled by heat conduction. At the same time, the pump shaft 1 drives the first gear 8 to rotate, and the first gear 8 can drive the third gear 10 to rotate through the second gear 9. As the third gear 10 rotates, the fan blades 11 can be driven to rotate, and then the flow rate of the water flow in the water-cooling chamber 4 can be accelerated through the fan blades 11, so that after cooling is completed, the water source can quickly leave the water-cooling chamber 4 through the water outlet pipe 6. At this time, new cooling water can enter the water-cooling chamber 4 through the water inlet pipe 5 again, and then cooling can be achieved.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0030] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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 the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vertical centrifugal pump, comprising a pump shaft (1), characterized in that: A bearing bracket (2) is arranged above the pump shaft (1), a main bearing (3) is installed in a bearing chamber (12) inside the bearing bracket (2), an inner wall of the main bearing (3) is detachably connected to an outer wall of the pump shaft (1), a water cooling chamber (4) is machined inside the bearing bracket (2), a water inlet pipe (5) is arranged on one side of the bearing bracket (2), a water outlet pipe (6) is arranged on a side of the bearing bracket (2) away from the water inlet pipe (5), a first gear (8) is installed on the outer wall of the pump shaft (1), a second gear (9) is meshed on the outer wall of the first gear (8), an outer wall of the second gear (9) is rotatably connected to the inner wall of the bearing bracket (2) via a sealed bearing, a third gear (10) is installed on the top of the second gear (9), an outer wall of the third gear (10) is meshed with a fan blade (11) rotatably connected to the inner wall of the bearing bracket (2) via a sealed bearing.

2. A vertical centrifugal pump according to claim 1, characterized in that: A pump coupling (7) is installed at the end of the pump shaft (1), and a pump housing (17) is installed below the bearing bracket (2).

3. A vertical centrifugal pump according to claim 1, characterized in that: A dust cover (16) is installed above the bearing bracket (2), the inner wall of the dust cover (16) is movably connected to the outer wall of the pump shaft (1), a first felt ring (15) is installed on the inner wall of the dust cover (16), and a second felt ring (14) movably connected to the outer wall of the pump shaft (1) is installed at the lower part of the interior of the bearing bracket (2).

4. A vertical centrifugal pump according to claim 1, characterized in that: An oil replenishing pipe (13) is installed above a side of the bearing bracket (2) close to the water inlet pipe (5).

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