Power-source-power-free heat dissipation fan blade device for slurry circulating pump motor bearing

Abstract

The utility model relates to a power-source-power-free heat dissipation fan blade device for a slurry circulating pump motor bearing. The power-source-power-free heat dissipation fan blade device comprises a fan blade assembly and a protective cover. The fan blade assembly comprises an installation auxiliary sleeve, a fixing ring and blades. A vibration reduction layer is arranged in the cylindrical structure of the installation auxiliary sleeve, and an annular fixing part arranged at the end of the cylindrical structure is matched with a motor coupling in size and provided with fixing holes in one-to-one correspondence with the motor coupling in position. The blades and the fixing ring are integrally formed, and the fixing ring is detachably installed on the outer surface of the cylindrical structure of the installation auxiliary sleeve and located at the end close to the circulating pump. The protective cover covers the joint of the fan blade assembly and the motor coupling, heat dissipation holes are formed in a protective cover body, and the supporting frame is fixedly installed on the side face of the protective cover body. According to the utility model, the fan blade assembly is arranged on the motor pair wheel to perform heat dissipation and cooling on the bearing at the driving end of the motor, and the rotation of the pair wheel drives the fan blades to rotate so as to generate airflow when the motor runs; the device does not need additional power supply, and is simple in structure and easy to install.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat dissipation blades, and in particular relates to a power-free heat dissipation blade device for a slurry circulation pump motor bearing. Background Art

[0002] During routine inspections at a thermal power plant, the primary electrical team discovered that the bearing temperature on the drive end of a slurry circulation pump motor was excessively high, reaching over 80°C. Inspection revealed normal sound and vibration data from the motor bearings. Heat accumulation and slow air circulation were evident at the motor drive end, and the motor's temperature rise under rated load did not exceed the temperature rise limit. The bearing temperature approached the alarm level of 85°C only because the ambient temperature exceeded 40°C. This indicated that the motor itself was functioning normally, and the potential risk should be addressed by lowering the ambient temperature through other means. Otherwise, excessively high bearing temperatures could alter the grease and damage the oil film.

[0003] To address this issue and ensure the equipment operates at normal temperatures, a heat sink is required at the motor output to increase air circulation. However, installing an axial fan also requires cooling of the motor itself, so while this improves air circulation, the cooling effect is limited. Furthermore, the continuous rotation of the motor bearings during operation causes vibration in surrounding equipment. Prolonged operation in this environment can lead to damage to the fan blades due to resonance. Therefore, a suitable heat sink must be designed based on the structural characteristics of the slurry circulation pump motor bearings. Summary of the Invention

[0004] In order to solve the technical problems existing in the known technology, the utility model provides a power-free heat dissipation fan blade device for the motor bearing of a slurry circulation pump, which effectively reduces the ambient temperature of the driving end bearing and ensures the safe and stable operation of the equipment.

[0005] The utility model includes the following technical solutions:

[0006] A power-free, heat-dissipating fan blade device for a slurry circulation pump motor bearing comprises a fan blade assembly and a protective cover. The fan blade assembly includes an auxiliary mounting sleeve, a retaining ring, and blades. The mounting sleeve's cylindrical structure is internally provided with a vibration-damping layer, and an annular retaining portion disposed at the end of the cylindrical structure matches the size of the motor pulley and is provided with corresponding fixing holes. The blades and the retaining ring are integrally formed, and the retaining ring is removably mounted on the outer surface of the mounting sleeve's cylindrical structure and located near one end of the circulation pump. The protective cover covers the connection between the fan blade assembly and the motor pulley, and the protective cover body is provided with heat dissipation holes. A support frame is fixed to the side of the protective cover body. When the motor is running, the rotation of the motor pulley drives the mounting sleeve, retaining ring, and fan blades to rotate, generating airflow that dissipates heat and cools the bearings at the motor drive end.

[0007] Furthermore, when the motor wheel pair is fixed by screws and nuts, the annular fixing portion of the auxiliary sleeve is simultaneously fixed on the motor wheel pair close to the circulating pump side.

[0008] Furthermore, an annular limiting protrusion structure is provided on the outer surface of the cylindrical structure of the installation auxiliary sleeve near one end of the circulation pump to facilitate the rapid installation of the fixing ring.

[0009] Furthermore, the vibration-damping layer is made of a rubber gasket or a hard sponge, and after the auxiliary sleeve is assembled, the inner surface of the vibration-damping layer is in close contact with the outer surface of the motor wheel.

[0010] Furthermore, the retaining ring is secured to the auxiliary mounting sleeve and the motor counterwheel via fastening bolts. Blind holes corresponding to the positions of the fastening bolts are provided on the outer surface of the motor counterwheel. The fastening bolts are inserted into the blind holes after sequentially passing through the through holes of the retaining ring and the auxiliary mounting sleeve. The blind holes may be internally threaded to match the type of fastening bolts.

[0011] Furthermore, the fixing ring is composed of two semicircular rings, each of which is provided with 3-4 blades; the two semicircular rings are fixed by installing connecting bolts on the connecting feet at the ends.

[0012] Furthermore, an air guide plate extending horizontally toward the motor is provided at the end of the blade; the air guide plate is bent into an arc shape and formed integrally with the blade, so that a vortex airflow is quickly formed in front of the air guide plate when the blade rotates, thereby achieving a heat dissipation effect.

[0013] Furthermore, the protective cover is a cylindrical structure with a through hole in the middle. The protective cover does not come into contact with any rotating parts, and its primary function is to guide wind direction and protect the fan assembly from external environmental influences. Furthermore, if a fan assembly component becomes loose or damaged during operation, the protective cover can intercept it within the cover and allow personnel to shut down the machine for maintenance.

[0014] Furthermore, the protective cover body is composed of four semicircular end faces and at least two detachably mounted arcuate side walls; heat dissipation holes are provided on the arcuate side wall close to the motor and on the semicircular end face.

[0015] Furthermore, the support frame is fixed vertically on the ground or fixed on the circulation pump and the motor at both ends in the horizontal direction.

[0016] The advantages and positive effects of this utility model are:

[0017] 1. The utility model dissipates heat and cools the motor drive end bearing by installing a fan blade assembly on the motor counter-wheel. When the motor is running, the rotation of the counter-wheel drives the fan blade to rotate, thereby generating airflow. The device does not require additional power supply, has a simple structure, is easy to install, can effectively reduce the motor bearing temperature, and improve the stability and reliability of equipment operation.

[0018] 2. The utility model sets a protective cover outside the fan blade assembly to guide the wind direction and protect the fan blade assembly from the influence of the external environment; the assembly parts of the protective cover are easy to disassemble, and the maintenance and inspection work are also very simple, which reduces maintenance costs and time.

[0019] 3. The blades used in the present invention are integrally formed with the fixing ring and the wind guide plate. The structural design guides the rapid formation of the vortex airflow without the need for an additional power supply and a complex control system. The installation auxiliary sleeve used in the present invention is provided with a vibration-damping layer to reduce the frequency of mechanical damage caused by resonance and extend the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 yes Figure 1 AA cross-sectional diagram in;

[0022] Figure 3 It is a schematic diagram of the overall structure of the fixed ring and blades;

[0023] In the figure, 1-motor; 2-motor pulley; 3-blade; 4-fixing ring; 5-installation auxiliary sleeve; 6-vibration reduction layer; 7-protective cover body; 8-support frame; 9-fastening bolt; 10-connecting bolt; 11-circulating pump; 12-air guide plate; 13-heat dissipation hole. DETAILED DESCRIPTION

[0024] In order to further disclose the content, features and effects of the invention, the following examples are given and described in detail with reference to the accompanying drawings. In the description of the following embodiments, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting this patent.

[0025] In the description of the following embodiments, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they may refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on specific circumstances.

[0026] Example: See attached Figure 1-3 A power-free heat dissipation fan blade device for a slurry circulation pump motor bearing includes a fan blade assembly and a protective cover. The fan blade assembly includes an auxiliary mounting sleeve 5, a fixing ring 4, and blades 3. A vibration-damping layer 6 is provided inside the cylindrical structure of the auxiliary mounting sleeve 5. The vibration-damping layer 6 is made of a rubber gasket or a hard sponge. After the auxiliary mounting sleeve 5 is assembled, the inner surface of the vibration-damping layer 6 is in close contact with the outer surface of the motor counterwheel 2. An annular fixing portion provided at the end of the cylindrical structure matches the size of the motor counterwheel 2 and is provided with fixing holes that correspond in position to each other. The blades 3 and the fixing ring 4 are integrally formed. The fixing ring 4 is removably mounted on the outer surface of the cylindrical structure of the auxiliary mounting sleeve 5 and is located near the circulation pump 11. The outer surface of the cylindrical structure of the auxiliary mounting sleeve 5 near the circulation pump 11 is provided with an annular limiting protrusion to facilitate quick installation of the fixing ring 4. When the motor counterwheel 2 is fixed by screws and nuts, the annular fixing portion of the auxiliary mounting sleeve 5 is simultaneously fixed to the motor counterwheel 2 near the circulation pump 11.

[0027] The fixing ring 4 is fixed to the mounting auxiliary sleeve 5 and the motor wheel 2 by fastening bolts, and the outer surface of the motor wheel 2 is provided with a blind hole corresponding to the position of the fastening bolt 9. The fastening bolt 9 is inserted into the above-mentioned blind hole after passing through the through holes on the fixing ring 4 and the mounting auxiliary sleeve 5 in turn. The inner side of the blind hole can be provided with a matching internal thread according to the model of the fastening bolt 9. The fixing ring 4 is composed of two semicircular rings, each of which is provided with three blades 3, and the blades 3 are evenly distributed on the fixing ring 4; the two semicircular rings are fixed by installing connecting bolts 10 on the connecting feet at the end. The end of the blade 3 is provided with an air guide plate 12 extending horizontally toward the direction of the motor 1. The air guide plate 12 is bent into an arc shape and is integrally formed with the blade 3, so that when the blade 3 rotates, a vortex airflow is quickly formed in front of the air guide plate 12 to achieve a heat dissipation effect. The blades 3, wind guide plate 12 and fixing ring 4 are all made of high-strength heat-resistant plastic or metal. The length of each blade 3 is 100-150 mm and the thickness is 2-3 mm. The outer diameter of the fixing ring 4 is determined according to the blade length and is usually 200-300 mm.

[0028] The protective cover covers the connection between the fan blade assembly and the motor wheel 2. The protective cover body 7 is provided with heat dissipation holes 13, and the side of the protective cover body 7 is fixed with a support frame 8. The protective cover body 7 is a cylindrical structure with a through hole in the middle of the cylindrical structure. The protective cover does not contact any rotating parts, and its main function is to guide the wind direction and protect the fan blade assembly from the external environment. The protective cover body 7 is composed of four semi-circular end faces and at least two detachable curved side walls; the curved side wall is close to the side of the motor 1 and the semi-circular end face and is provided with heat dissipation holes 13. The two ends of the support frame 8 in the horizontal direction are respectively fixed on the circulation pump 11 and the motor 1.

[0029] Workflow: Clean the surface of the motor wheel 2 to ensure that it is free of oil and dust, then install the device. After the device is installed, first perform a no-load test run, start the motor 1 under no-load conditions, observe the operation of the fan blade assembly, ensure that all components are not loose, ensure that it can operate normally and generate sufficient airflow, measure the drive end bearing temperature of the motor 1, and ensure that the temperature is within the normal range; then perform a load test run, start the motor 1 under normal load conditions, observe the operation of the fan blade assembly, ensure that it can operate normally under load conditions, measure the drive end bearing temperature of the motor 1, and ensure that the temperature is controlled below the alarm and trip values; finally, observe the temperature control effect, and allow the motor 1 and the circulating pump 11 to operate normally for a period of time to determine that the bearing temperature of the motor 1 is stable and will not cause an alarm or trip due to excessive temperature.

[0030] The utility model reduces the bearing temperature by means of a fan blade assembly without power supply and stabilizes the bearing temperature below 60°C, thereby reducing lubrication failure and wear caused by high temperature, extending the service life of the motor and bearings, and improving the stability and reliability of equipment operation.

[0031] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are merely illustrative and not restrictive. Under the guidance of the present invention, those skilled in the art can devise various forms without departing from the spirit of the present invention and the scope of protection of the claims. All such forms fall within the scope of protection of the present invention.

Claims

1. A power-free heat dissipation fan device for a slurry circulation pump motor bearing, characterized by: It includes a fan blade assembly and a protective cover; the fan blade assembly includes an installation auxiliary sleeve, a fixing ring and blades; a vibration damping layer is provided inside the cylindrical structure of the installation auxiliary sleeve, and an annular fixing part arranged at the end of the cylindrical structure matches the size of the motor wheel and is provided with fixing holes with one-to-one corresponding positions; the blade and the fixing ring are integrally formed, and the fixing ring is detachably mounted on the outer surface of the cylindrical structure of the installation auxiliary sleeve and is located near one end of the circulation pump; the protective cover covers the connection between the fan blade assembly and the motor wheel, and a heat dissipation hole is provided on the main body of the protective cover, and a support frame is fixed to the side of the main body of the protective cover.

2. The power-free heat dissipation fan device for a slurry circulation pump motor bearing according to claim 1, characterized in that: When the motor wheel pair is fixed by screws and nuts, the annular fixing portion of the mounting auxiliary sleeve is simultaneously fixed on the motor wheel pair close to the circulating pump side.

3. The power-free heat dissipation fan device for the motor bearing of a slurry circulation pump according to claim 2, characterized in that: An annular limiting protrusion structure is provided on the outer surface of the cylindrical structure of the installation auxiliary sleeve close to one end of the circulation pump.

4. The power-free heat dissipation fan device for a slurry circulation pump motor bearing according to claim 2, characterized in that: The vibration-damping layer is made of a rubber gasket or a hard sponge. After the auxiliary sleeve is assembled, the inner surface of the vibration-damping layer is in close contact with the outer surface of the motor wheel.

5. The power-free heat dissipation fan device for a slurry circulation pump motor bearing according to claim 1, characterized in that: The fixing ring is fixed to the installation auxiliary sleeve and the motor wheel through fastening bolts, and the outer surface of the motor wheel is provided with blind holes corresponding to the positions of the fastening bolts.

6. The power-free heat dissipation fan device for a slurry circulation pump motor bearing according to claim 5, characterized in that: The fixing ring is composed of two semicircular rings, each of which is provided with 3-4 blades; the two semicircular rings are fixed by installing connecting bolts on the connecting feet at the ends.

7. The power-free heat dissipation fan device for a slurry circulation pump motor bearing according to claim 1, characterized in that: The ends of the blades are provided with wind guide plates extending horizontally toward the motor; the wind guide plates are bent into an arc shape and are formed integrally with the blades.

8. The power-free heat dissipation fan device for a slurry circulation pump motor bearing according to claim 1, characterized in that: The protective cover body is a cylindrical structure, and a through hole is provided in the middle of the cylindrical structure.

9. The power-free heat dissipation fan device for a slurry circulation pump motor bearing according to claim 8, characterized in that: The protective cover body is composed of four semicircular end faces and at least two detachably mounted arcuate side walls; heat dissipation holes are provided on the arcuate side wall close to the motor and on the semicircular end face.

10. The power-free heat dissipation fan device for a slurry circulation pump motor bearing according to claim 1, characterized in that: The support frame is fixed vertically on the ground or fixed at both ends in the horizontal direction on the circulation pump and the motor respectively.

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