Turbofan with preposed bearing

Abstract

The utility model relates to the technical field of ventilation equipment, and discloses a turbofan with a front bearing, which comprises a motor, one side of the motor is fixedly connected with a pump body, one side of the pump body is fixedly connected with a middle pump, the interior of the middle pump is in threaded connection with a third fixing screw, and the third fixing screw is in threaded connection with a second fixing screw. The outer wall of the third fixing screw is in threaded connection with a pump cover, a heat insulation assembly is arranged on one side of the middle pump, a fixing assembly is arranged on the outer wall of the motor, the heat insulation assembly comprises an oil seal seat, and the oil seal seat is fixedly connected to one side of the middle pump. According to the utility model, when the fan runs, if high-temperature gas is conveyed, the oil seal I and the sealing ring in the heat insulation assembly can effectively prevent heat from being transferred to the bearing I, so that the problems of lubricating grease failure, aggravated abrasion, even jamming and the like caused by over-high temperature of the bearing I are avoided, and the heat insulation effect is good for corrosive gas, impurities and sucked foreign matters. The first oil seal and the sealing ring play a role in sealing and isolation.

Description

Technical Field

[0001] This utility model relates to the field of ventilation equipment technology, and in particular to a turbine fan with a front-mounted bearing. Background Technology

[0002] Turbine fans play a vital role in numerous fields, including industrial production, ventilation, air conditioning systems, and environmental protection equipment. Driven by an electric motor, they rotate impellers to generate powerful airflow, enabling the transport, circulation, or discharge of air. In factory workshops, they are used for ventilation, removing harmful gases, dust, and heat, improving the working environment, and protecting worker health. In air conditioning systems, as a core component, they regulate indoor airflow and temperature distribution. In environmental protection equipment, such as waste gas treatment devices, they assist in purifying waste gases. The efficient operation of turbine fans is crucial for maintaining normal system function, improving production efficiency, and ensuring environmental quality.

[0003] Existing turbine blowers typically consist of a motor, impeller, pump body, intermediate pump, pump cover, and bearing. The motor is connected to the impeller, providing rotational power. The impeller is mounted inside the pump body, and the pump body and intermediate pump constitute the main structure of the blower. The pump cover is used to seal one end of the intermediate pump. The bearing, as a key component supporting the impeller's rotation, is generally installed in the internal cavity of the pump body or intermediate pump, close to the impeller, and is fixed by bearing seats and related fixing screws to ensure that the impeller can rotate smoothly and at high speed.

[0004] Existing turbine fans have significant defects. Regarding bearing protection, since the bearing is located inside the cavity and is directly exposed to the working environment inside the fan, it is easily and severely affected when the fan is used to transport high-temperature gases, corrosive gases, or air containing a large amount of dust. High-temperature gases can cause the bearing temperature to rise beyond its normal operating temperature range, leading to grease failure, accelerated bearing wear, or even seizure. Corrosive gases can easily corrode the metal surface of the bearing, damaging its structural integrity and reducing its strength and precision. Dust particles may enter the interior of the bearing, increasing frictional resistance, accelerating bearing wear, and shortening its service life. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a turbine fan with the bearing positioned in front, aiming to improve the problem that the bearing of the existing fan is easily damaged by the environment of high temperature gas, corrosive gas and dust in the cavity.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a front-bearing turbine fan, comprising a motor, a pump body fixedly connected to one side of the motor, an intermediate pump fixedly connected to one side of the pump body, a fixing screw three threadedly connected inside the intermediate pump, a pump cover threadedly connected to the outer wall of the fixing screw three, a heat insulation component provided on one side of the intermediate pump, a fixing component provided on the outer wall of the motor, the heat insulation component including an oil seal seat, the oil seal seat fixedly connected to one side of the intermediate pump, a fixing screw two threadedly connected inside the oil seal seat, a fixing screw one threadedly connected to one side of the oil seal seat, an oil seal one threadedly connected to the outer wall of the fixing screw one, a fixing screw two threadedly connected to one side of the pump cover, a bearing seat threadedly connected to the outer wall of the fixing screw two, and a bearing one fixedly connected to one side of the bearing seat.

[0007] Furthermore, the fixing component includes a base plate, the outer wall of which is fixedly connected to the outer wall of the motor.

[0008] Furthermore, the pump cover is internally threaded with a fixing screw three, and the outer wall of the fixing screw three is threaded with an end cap, and a spring washer is provided on one side of the end cap.

[0009] Furthermore, an impeller is fixedly connected to the output end of the motor, an air outlet is fixedly connected to one side of the pump body, an air inlet is fixedly connected to the other side of the pump body, and a pump head is fixedly connected to one end of the intermediate pump.

[0010] Furthermore, a sealing ring is fixedly connected to the outer wall of the oil seal.

[0011] Furthermore, a fixing screw is threaded inside the bearing housing, and a pressure plate is threaded on the outer wall of the fixing screw.

[0012] Furthermore, one end of the spring washer is fixedly connected to one side of the end cover, and the other end of the spring washer is fixedly connected to one side of the outer wall of the pump cover.

[0013] Furthermore, an isolation chamber is provided inside the pump.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, when the fan is running and conveying high-temperature gas, the oil seal and sealing ring in the heat insulation component can effectively prevent heat from being transferred to the bearing, avoiding problems such as grease failure, accelerated wear, or even jamming of the bearing due to excessive temperature. For corrosive gases, impurities, and inhaled foreign objects, the oil seal and sealing ring play a sealing and isolation role, preventing these harmful substances from entering the interior of the bearing, protecting the metal surface of the bearing from corrosion, maintaining its structural integrity and precision, reducing frictional resistance, thereby greatly improving the service life of the bearing, ensuring that the fan can operate stably for a long time, reducing equipment maintenance costs and replacement frequency, and improving the reliability and economy of the entire ventilation system.

[0016] 2. In this utility model, when it is necessary to replace the front bearing, simply unscrew the fixing screw three and remove the end cover to operate the bearing directly without disassembling the pump cover. This greatly simplifies the replacement process, saves maintenance time and labor costs. The isolation chamber can be opened to allow air convection. During the operation of the fan, the air in the isolation chamber can exchange with the outside air, accelerate heat dissipation, further reduce the temperature around the bearing, improve the heat dissipation effect, help keep the bearing within a suitable operating temperature range, further extend the service life of the bearing, and also help improve the overall working efficiency and performance stability of the fan. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a turbine fan with a front-mounted bearing, as proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the pump body structure of a turbine fan with a front-mounted bearing, as proposed in this utility model.

[0019] Figure 3 for Figure 2 Larger image of prescription A;

[0020] Figure 4 This is a schematic diagram of a portion of the oil seal structure of a turbine fan with a front-mounted bearing, as proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of the motor section of a turbine fan with a front-mounted bearing, as proposed in this utility model.

[0022] Figure 6 This is a schematic diagram of the oil seal seat of a turbine fan with a front-mounted bearing, as proposed in this utility model.

[0023] Legend:

[0024] 1. Pump head; 2. Motor; 3. Air inlet; 4. Base plate; 5. Air outlet; 6. Pump body; 7. Intermediate pump; 8. Pump cover; 9. Impeller; 10. End cover; 11. Bearing housing; 12. Bearing 1; 13. Oil seal 1; 14. Oil seal seat; 15. Fixing screw 1; 16. Fixing screw 2; 17. Fixing screw 3; 18. Sealing ring; 19. Pressure plate; 20. Fixing screw 1; 21. Fixing screw 2; 22. Spring washer; 23. Fixing screw 3; 24. Isolation chamber. Detailed Implementation

[0025] 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.

[0026] Reference Figure 1 - Figure 4This utility model provides an embodiment of a bearing-front turbine fan, including a motor 2. The motor 2 serves as the core power source of the entire turbine fan, providing power for the rotation of the subsequent impeller 9. A pump body 6 is fixedly connected to one side of the motor 2. The pump body 6 is one of the main airflow channel components of the fan. An intermediate pump 7 is fixedly connected to one side of the pump body 6, used to guide and control the airflow direction and speed, and to provide installation space for components such as the bearing 12. A fixing screw 3 17 is threaded inside the intermediate pump 7, used to fix a pump cover 8 to the intermediate pump 7. The pump cover 8 is threaded on the outer wall of the fixing screw 3 17, and the pump cover 8 seals the intermediate pump 7. One end of the pump 7 has a heat insulation component on one side to protect the bearing 12 from the harsh environment inside the fan. The outer wall of the motor 2 has a fixing component, including an oil seal seat 14, which is fixedly connected to one side of the pump 7. A fixing screw 16 is threaded inside the oil seal seat 14, firmly securing it to the pump 7. A fixing screw 15 is threaded inside the oil seal seat 14 to fix the oil seal 13, ensuring a tight seal and preventing gas and impurities from entering the bearing 12 area. In the area, the outer wall of the fixing screw 15 is threaded with an oil seal 13. The oil seal 13 is a key sealing component in the heat insulation assembly, effectively preventing high-temperature gases, corrosive gases, and impurities from entering the bearing 12 area and protecting the bearing 12 from damage. A fixing screw 21 is threaded on one side of the pump cover 8. The fixing screw 21 is used to fix the bearing housing 11 to the pump cover 8, ensuring that the bearing 12 will not shift during operation. The outer wall of the fixing screw 21 is threaded with a bearing housing 11, and a bearing 12 is fixedly connected to one side of the bearing housing 11. The bearing 12 is a key component supporting the rotation of the impeller 9 and can withstand the high-speed rotation of the impeller 9. The radial and axial forces generated during operation ensure that the impeller 9 rotates smoothly and at high speed, reducing friction and wear, and improving the operating efficiency and stability of the fan. The fixed components include a base plate 4, the outer wall of which is fixedly connected to the outer wall of the motor 2. A sealing ring 18 is fixedly connected to the outer wall of the oil seal 13, which further enhances the sealing effect of the oil seal 13. A fixing screw 20 is threaded inside the bearing housing 11, and a pressure plate 19 is threaded on the outer wall of the fixing screw 20. The pressure plate 19 axially positions the bearing 12 to ensure that the bearing 12 works normally. It works in conjunction with the bearing housing 11 and the bearing 12 to ensure the stability of the bearing 12 during operation.

[0027] Reference Figure 1 , Figure 5 and Figure 6The pump cover 8 has internal threaded connections to fixing screws 23, which secure the end cover 10 to the pump cover 8, ensuring a firm installation and preventing it from loosening during fan operation, thus maintaining the seal of the fan front end. The end cover 10 is also threaded onto the outer wall of fixing screws 23, sealing the front end of the pump cover 8 to prevent foreign objects from entering the fan. A spring washer 22 is located on one side of the end cover 10, providing preload. An impeller 9 is fixedly connected to the output end of the motor 2. Driven by the motor 2, the impeller 9 rotates at high speed, converting the mechanical energy of the motor 2 into aerodynamic kinetic energy, causing airflow. The ventilation function of the fan is as follows: an air outlet 5 is fixedly connected to one side of the pump body 6, which is used to discharge the treated air; an air inlet 3 is fixedly connected to the other side of the pump body 6, which is used to draw in outside air; a pump head 1 is fixedly connected to one end of the intermediate pump 7; one end of the spring washer 22 is fixedly connected to one side of the end cover 10; and the other end of the spring washer 22 is fixedly connected to one side of the outer wall of the pump cover 8; an isolation chamber 24 is set inside the intermediate pump 7, which is used to isolate the airflow in different areas. Through a special structural design, it can reduce heat transfer and gas interference. At the same time, the openings on its wall can allow convection with the outside air, so as to dissipate heat from components such as the bearing 12.

[0028] Working principle: Motor 2 is started and begins to rotate, driving impeller 9 to rotate at high speed via the output shaft. The rotation of impeller 9 creates negative pressure at air inlet 3. Outside air, under atmospheric pressure, is filtered through the air filter and drawn into the fan. After entering pump body 6, the air gains energy under the action of impeller 9, is accelerated, and its flow direction is changed, forming a high-speed airflow. When this high-speed airflow passes through the isolation chamber 24 inside the intermediate pump 7, some of the airflow undergoes convective heat exchange with the outside air through openings in the wall of the isolation chamber 24, carrying away the heat generated by components such as bearing 12, thus achieving heat dissipation. The cooled airflow continues to flow within pump body 6 and is finally discharged from air outlet 5, completing the air transport, circulation, or discharge process. During the operation of the fan, the oil seal 13 and sealing ring 18 in the heat insulation component effectively prevent high-temperature gases, corrosive gases, and impurities inside the fan from entering the bearing 12 area, protecting the bearing 12 from the harsh environment and ensuring that the bearing 12 can work normally and maintain the smooth rotation of the impeller 9. When the bearing 12 needs to be replaced, by unscrewing the fixing screw 23 in diagonal order, the tightening force of the screw and the preload force of the spring washer 22 are overcome, so that the end cover 10 can be smoothly separated from the pump cover 8, and the bearing 12 can be operated directly. The fixing screw 20 and fixing screw 21 are removed to remove the bearing 12, which is convenient for replacing the bearing 12 and is simple to maintain.

[0029] 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 front-bearing turbine fan, comprising a motor (2), characterized in that: A pump body (6) is fixedly connected to one side of the motor (2), and a medium pump (7) is fixedly connected to one side of the pump body (6). A fixing screw three (17) is threaded inside the medium pump (7), and a pump cover (8) is threaded on the outer wall of the fixing screw three (17). A heat insulation component is provided on one side of the medium pump (7), and a fixing component is provided on the outer wall of the motor (2). The heat insulation assembly includes an oil seal seat (14), which is fixedly connected to one side of the intermediate pump (7). A fixing screw two (16) is threaded inside the oil seal seat (14). A fixing screw one (15) is threaded on one side inside the oil seal seat (14). An oil seal one (13) is threaded on the outer wall of the fixing screw one (15). A fixing screw two (21) is threaded on one side of the pump cover (8). A bearing seat (11) is threaded on the outer wall of the fixing screw two (21). A bearing one (12) is fixedly connected on one side of the bearing seat (11).

2. The turbine fan with a front-mounted bearing according to claim 1, characterized in that: The fixing component includes a base plate (4), the outer wall of which is fixedly connected to the outer wall of the motor (2).

3. A turbine fan with a front-mounted bearing according to claim 2, characterized in that: The pump cover (8) is internally threaded with a fixing screw three (23), and the fixing screw three (23) is externally threaded with an end cap (10). A spring washer (22) is provided on one side of the end cap (10).

4. A turbine fan with a front-mounted bearing according to claim 3, characterized in that: An impeller (9) is fixedly connected to the output end of the motor (2), an air outlet (5) is fixedly connected to one side of the pump body (6), an air inlet (3) is fixedly connected to the other side of the pump body (6), and a pump head (1) is fixedly connected to one end of the intermediate pump (7).

5. A turbine fan with a front-mounted bearing according to claim 1, characterized in that: The outer wall of the oil seal (13) is fixedly connected with a sealing ring (18).

6. A turbine fan with a front-mounted bearing according to claim 1, characterized in that: The bearing housing (11) is internally threaded with a fixing screw (20), and the fixing screw (20) is externally threaded with a pressure plate (19).

7. A turbine fan with a front-mounted bearing according to claim 3, characterized in that: One end of the spring washer (22) is fixedly connected to one side of the end cover (10), and the other end of the spring washer (22) is fixedly connected to one side of the outer wall of the pump cover (8).

8. A turbine fan with a front-mounted bearing according to claim 3, characterized in that: The pump (7) has an isolation chamber (24) inside.

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