Anti-deformation centrifugal pump with double liquid outlet pipes

Abstract

The utility model relates to the technical field of centrifugal pumps, and discloses an anti-deformation centrifugal pump adopting double liquid outlet pipes, which comprises a motor, a pump body, an impeller volute and the double liquid outlet pipes, and is characterized in that the motor is arranged at the top of the pump body, a connecting sleeve is fixedly sleeved outside the pump body, a protective cover is integrally mounted on the connecting sleeve, and the protective cover is connected with the impeller volute. The protective cover can effectively prevent foreign matters from entering the motor, a plurality of ventilation holes are formed in the protective cover, good heat dissipation of the motor is ensured, the impeller volute and the pump body are installed, and a liquid inlet is formed in the bottom of the impeller volute. By optimizing a bearing lubricating system, the friction resistance is further reduced, the rotating efficiency of the pump shaft is improved, the service life of the bearing is prolonged, the overheating phenomenon caused by long-time operation is avoided, the risk that the centrifugal pump deforms due to high-temperature thermal creep is remarkably reduced, the centrifugal pump can still stably operate in a high-temperature environment, and the service life of the centrifugal pump is prolonged. And the service life of the whole equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump technology, specifically to a deformation-resistant centrifugal pump with dual outlet pipes. Background Technology

[0002] A vertical submersible centrifugal pump, also known simply as a submersible pump, is a device that uses the centrifugal force generated by an impeller driven by a motor to pump water or other liquids. The working principle of a vertical submersible centrifugal pump is based on centrifugal force. When the impeller inside the pump body rotates at high speed, liquid is drawn in from the center of the impeller and accelerated towards the outer edge through the impeller channel. Under the action of centrifugal force, the liquid gains high kinetic energy and pressure, and is then discharged through the outlet of the pump casing. Because the pump body of a vertical submersible centrifugal pump is vertically installed and the impeller is completely submerged in the liquid, self-priming is not required, effectively avoiding cavitation and improving pump efficiency and service life.

[0003] However, traditional vertical submersible centrifugal pumps are susceptible to anisotropic deformation caused by high-temperature thermal creep during long-term operation, which leads to pump body deformation and affects the pump's stability and service life. Especially in high-temperature environments, the inconsistent thermal expansion coefficients of the pump body materials exacerbate the uneven deformation of the pump body, ultimately causing leakage or performance degradation.

[0004] Therefore, this utility model provides a deformation-resistant centrifugal pump with dual outlet pipes. The symmetrical design of the dual outlet pipes corrects for deformation caused by the anisotropy of the volute casing. The 180° symmetry is complementary, offsetting deformation caused by thermal creep. The dual outlet pipe design cleverly disperses thermal stress, effectively suppressing deformation tendencies and ensuring the long-term stability and effective operation of the pump body structure. Utility Model Content

[0005] The purpose of this invention is to provide a deformation-resistant centrifugal pump with dual outlet pipes, which solves the technical problem of deformation caused by high-temperature thermal creep in traditional vertical submersible centrifugal pumps, achieving long-term stability and effective operation of the pump body structure, and significantly improving the service life and performance of the pump.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a deformation-resistant centrifugal pump with dual outlet pipes, comprising a motor, a pump body, an impeller volute, and dual outlet pipes, characterized in that: the motor is mounted on the top of the pump body, a connecting sleeve is fixedly fitted on the outside of the pump body, and a protective cover is integrally installed on the connecting sleeve. This protective cover can effectively prevent foreign objects from entering the motor, and the protective cover has multiple ventilation holes to ensure good heat dissipation of the motor. The impeller volute is installed with the pump body, and an inlet is provided at the bottom of the impeller volute. The dual outlet pipes are respectively connected to both sides of the impeller volute and are connected to the inlet and arranged at an angle to ensure uniform liquid distribution and reduce pressure fluctuations inside the pump.

[0007] Preferably, the output end of the motor is fixedly connected to a pump shaft, the other end of which passes through the pump body and is connected to an impeller inside the impeller volute. The impeller is made of high-strength material to enhance wear resistance. The blades on the impeller play a major role in throwing the liquid from the center to the outer periphery, thereby increasing the kinetic energy and static pressure energy of the liquid. Before assembly, the impeller usually needs to undergo a static balance test to ensure that its inner and outer surfaces are smooth in order to reduce frictional losses of the water flow.

[0008] Preferably, when the pump shaft passes through the inside of the pump body, it is supported by bearing housing A and bearing housing B. Bearing housing A and bearing housing B are installed in bearing housing grooves inside the pump body. The bearing housing A and bearing housing B are equipped with rolling bearings or sliding bearings, and grease or transparent oil is used as lubricant to reduce friction and wear. The bearings need to maintain appropriate lubrication and temperature during operation to ensure the normal operation of the pump.

[0009] Preferably, the pump body is further provided with a lubricating oil channel, through which the lubricating oil circulates to lubricate bearing housing A and bearing housing B.

[0010] Preferably, one end of the lubricating oil passage is connected to an oil inlet pipe, and the other end of the oil inlet pipe is connected to an oil tank. The oil tank is equipped with an oil filter, which can effectively filter impurities in the lubricating oil to ensure the cleanliness of the lubricating oil. The oil tank is installed on the top of the pump body.

[0011] Preferably, the other end of the lubricating oil channel is connected to an oil nozzle, which sprays lubricating oil evenly to ensure that bearing housing A and bearing housing B are fully lubricated. The oil nozzle is equipped with a regulating valve and an oil temperature sensor at the nozzle head. The regulating valve monitors the bearing temperature in real time through the sensor and can automatically adjust the amount of oil sprayed according to the bearing temperature to avoid over-lubrication or insufficient lubrication and ensure accurate supply of lubricating oil.

[0012] Preferably, the pump body is further provided with an airflow channel that runs through the pump body and is connected to the air inlet and air outlet. The airflow channel has built-in air guide vanes with a spiral design to guide the airflow smoothly, reduce airflow resistance, improve ventilation efficiency, and ensure a uniform temperature inside the pump body.

[0013] This invention provides a deformation-resistant centrifugal pump with dual outlet pipes. It offers the following advantages:

[0014] (1) By optimizing the bearing lubrication system, this utility model further reduces frictional resistance, improves pump shaft rotation efficiency, extends bearing service life, avoids overheating caused by long-term operation, significantly reduces the risk of centrifugal pump deformation due to high-temperature thermal creep, ensures that centrifugal pump can still operate stably in high-temperature environment, and improves the overall equipment reliability and service life.

[0015] (2) By optimizing the airflow channel design, this utility model further reduces the internal temperature of the pump body, prevents material aging caused by high temperature, enhances the structural stability of the pump body, ensures that the centrifugal pump can maintain high efficiency performance during long-term high-intensity operation, and significantly improves the overall durability and operational safety of the equipment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the protective cover structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the electric motor, pump body, impeller casing, and double outlet pipes of this utility model;

[0018] Figure 3 This is a cross-sectional view of the present invention;

[0019] Figure 4 This utility model Figure 3 A magnified view of A in the middle.

[0020] In the diagram: 21. Motor; 22. Pump body; 23. Impeller volute; 24. Double outlet pipe; 25. Protective cover; 26. Connecting sleeve; 27. Ventilation hole; 31. Pump shaft; 32. Impeller; 34. Bearing housing A; 35. Bearing housing B; 41. Lubricating oil channel; 42. Oil tank; 43. Oil inlet pipe; 44. Oil nozzle; 45. Airflow channel; 46. Air inlet; 47. Air outlet; 48. Guide vane. Detailed Implementation

[0021] 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.

[0022] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Example

[0023] Based on the existing problem of deformation caused by high-temperature thermal creep in traditional vertical submersible centrifugal pumps, this utility model provides a preferred embodiment of a deformation-resistant centrifugal pump with dual outlet pipes, for example... Figure 1-4As shown: A deformation-resistant centrifugal pump with dual outlet pipes includes a motor 21, a pump body 22, an impeller casing 23, and dual outlet pipes 24. The motor 21 is located on the top of the pump body 22. A connecting sleeve 26 is fixedly fitted on the outside of the pump body 22. A protective cover 25 is integrally installed on the connecting sleeve 26. The protective cover 25 can effectively prevent foreign objects from entering the motor 21. The protective cover 25 is provided with multiple ventilation holes 27 to ensure good heat dissipation of the motor 21. The impeller casing 23 is installed with the pump body 22, and the bottom of the impeller casing 23 is provided with an inlet. The dual outlet pipes 24 are respectively connected to both sides of the impeller casing 23 and are connected to the inlet and arranged at a 90-degree angle to ensure uniform liquid distribution and reduce pressure fluctuations inside the pump.

[0024] The output end of the motor 21 is fixedly connected to the pump shaft 31. The other end of the pump shaft 31 passes through the pump body 22 and is connected to the impeller 32 inside the impeller volute 23. The impeller 32 is made of high-strength material to enhance wear resistance. The blades on the impeller 32 play a major role in throwing the liquid from the center to the outer periphery, thereby increasing the kinetic energy and static pressure energy of the liquid. Before assembly, the impeller usually needs to undergo a static balance test to ensure that its inner and outer surfaces are smooth in order to reduce the friction loss of the water flow.

[0025] In this embodiment, the motor 21 starts and drives the pump shaft 31 to rotate, which in turn drives the impeller 32 to rotate at high speed. Under the centrifugal force of the impeller 32, the liquid flows rapidly to the periphery of the impeller volute 23, forming a high-pressure liquid. The high-pressure liquid is evenly discharged through the double outlet pipes 24, which effectively reduces the pressure concentration inside the pump, reduces the risk of pump body deformation, and extends the service life. Example

[0026] Please see Figures 1-4 Furthermore, based on Embodiment 1, the following is obtained: When the pump shaft 31 passes through the inside of the pump body 22, it is supported by bearing seats A34 and B35. Bearing seats A34 and B35 are installed in bearing seat grooves inside the pump body 22. The bearing seats A34 and B35 are equipped with rolling bearings or sliding bearings. Butter or transparent oil is used as lubricant to reduce friction and wear. The bearings need to maintain appropriate lubrication and temperature during operation to ensure the normal operation of the pump.

[0027] The pump body 22 is also equipped with a lubricating oil channel 41, through which lubricating oil circulates to lubricate bearing housing A34 and bearing housing B35. One end of the lubricating oil channel is connected to an oil inlet pipe 43, and the other end of the oil inlet pipe 43 is connected to an oil tank 42. The oil tank 42 is equipped with an oil filter, which can effectively filter impurities in the lubricating oil to ensure the cleanliness of the lubricating oil. The oil tank 42 is installed on the top of the pump body 22. The other end of the lubricating oil channel is connected to an oil nozzle 44, which sprays lubricating oil evenly to ensure that bearing housing A34 and bearing housing B35 are fully lubricated. The oil nozzle 44 is equipped with a regulating valve, and the head of the oil nozzle 44 is equipped with an oil temperature sensor. The regulating valve monitors the bearing temperature in real time through the sensor and can automatically adjust the amount of oil sprayed according to the bearing temperature to avoid over-lubrication or under-lubrication and ensure accurate supply of lubricating oil.

[0028] In this embodiment, by optimizing the bearing lubrication system, frictional resistance is further reduced, pump shaft rotation efficiency is improved, bearing service life is extended, and overheating caused by long-term operation is avoided. This significantly reduces the risk of centrifugal pump deformation due to high-temperature thermal creep, ensuring that the centrifugal pump can still operate stably in high-temperature environments and improving the overall equipment reliability and service life.

[0029] The pump body 22 is also provided with an airflow channel 45, which runs through the pump body 22 and is connected to the air inlet 46 and the air outlet 47. The airflow channel 45 is equipped with a guide vane 48, which is designed in a spiral shape to guide the airflow smoothly, reduce airflow resistance, improve ventilation efficiency, and ensure a uniform temperature inside the pump body.

[0030] In this embodiment, by optimizing the airflow channel design, the internal temperature of the pump body is further reduced, preventing material aging caused by high temperature, enhancing the structural stability of the pump body, ensuring that the centrifugal pump can maintain high efficiency performance during long-term high-intensity operation, and significantly improving the overall durability and operational safety of the equipment.

[0031] During use, the motor 21 drives the pump shaft 31 to rotate, which in turn drives the impeller 32 to rotate at high speed. Under the centrifugal force of the impeller 32, the liquid flows rapidly to the periphery of the impeller volute 23, forming a high-pressure liquid. The high-pressure liquid is evenly discharged through the double outlet pipe 24.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A deformation-resistant centrifugal pump with dual outlet pipes, comprising an electric motor (21), a pump body (22), an impeller casing (23), and dual outlet pipes (24), characterized in that: The motor (21) is located on the top of the pump body (22). The pump body (22) is fixedly fitted with a connecting sleeve (26). A protective cover (25) is integrally installed on the connecting sleeve (26). The protective cover (25) can effectively prevent foreign objects from entering the motor (21). The protective cover (25) is provided with multiple ventilation holes (27) to ensure good heat dissipation of the motor (21). The impeller volute (23) is installed with the pump body (22). The bottom of the impeller volute (23) is provided with a liquid inlet. The double liquid outlet pipes (24) are respectively connected to both sides of the impeller volute (23) and are connected to the liquid inlet and arranged at a 90-degree angle to ensure uniform liquid distribution and reduce pressure fluctuations inside the pump.

2. The anti-deformation centrifugal pump with dual outlet pipes according to claim 1, characterized in that: The output end of the motor (21) is fixedly connected to the pump shaft (31), and the other end of the pump shaft (31) passes through the pump body (22) and is connected to the impeller (32) inside the impeller volute (23).

3. A deformation-resistant centrifugal pump with dual outlet pipes according to claim 2, characterized in that: When the pump shaft (31) passes through the inside of the pump body (22), it is supported by bearing seat A (34) and bearing seat B (35). Bearing seat A (34) and bearing seat B (35) are installed in the bearing seat groove inside the pump body (22). The bearing seat A (34) and bearing seat B (35) are equipped with rolling bearings or sliding bearings.

4. A deformation-resistant centrifugal pump with dual outlet pipes according to claim 1, characterized in that: The pump body (22) is also provided with a lubricating oil channel (41), through which the lubricating oil circulates and lubricates bearing housing A (34) and bearing housing B (35).

5. A deformation-resistant centrifugal pump with dual outlet pipes according to claim 4, characterized in that: One end of the lubricating oil passage is connected to the oil inlet pipe (43), and the other end of the oil inlet pipe (43) is connected to the oil tank (42). The oil tank (42) is equipped with an oil filter, which can effectively filter impurities in the lubricating oil to ensure the cleanliness of the lubricating oil. The oil tank (42) is installed on the top of the pump body (22).

6. A deformation-resistant centrifugal pump with dual outlet pipes according to claim 4, characterized in that: The other end of the lubricating oil channel is connected to an oil nozzle (44). The oil nozzle (44) sprays lubricating oil evenly to ensure that bearing housing A (34) and bearing housing B (35) are fully lubricated. The oil nozzle (44) is equipped with a regulating valve, and the head of the oil nozzle (44) is equipped with an oil temperature sensor. The regulating valve monitors the bearing temperature in real time through the sensor and can automatically adjust the amount of oil sprayed according to the bearing temperature to avoid over-lubrication or insufficient lubrication and ensure accurate supply of lubricating oil.

7. A deformation-resistant centrifugal pump with dual outlet pipes according to claim 1, characterized in that: The pump body (22) is also provided with an airflow channel (45), which runs through the pump body (22) and is connected to the air inlet (46) and the air outlet (47). The airflow channel (45) is equipped with a guide vane (48), which is designed in a spiral shape to guide the airflow smoothly and reduce airflow resistance.

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