Heat dissipation device of powder concentrator
By designing a protective mechanism at the lower bearing of the air classifier, the problem of damage caused by material and airflow erosion in existing devices has been solved, achieving a long service life and stable heat dissipation of the air inlet pipe, and ensuring the continuous operation of the equipment.
Patent Information
- Application Number
- CN202422863774.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-25
AI Technical Summary
The heat dissipation device at the lower bearing of the existing powder classifier is easily damaged by the erosion of materials and airflow, causing the equipment to stop and the heat dissipation effect cannot be guaranteed for a long time.
A heat dissipation device including a lower bearing housing and an air inlet pipe was designed. A protective mechanism is set on the air inlet pipe, which uses a polygonal retaining ring and an arc plate structure, combined with elastic elements and longitudinal ribs, to form a double layer of protection to prevent materials and airflow from directly scouring the device.
Effectively protect the air inlet pipe, extend its service life, ensure the stable operation of the powder classifier, avoid mechanical fatigue, and achieve long-term heat dissipation effect.
Smart Images
Figure CN223475601U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air classifiers, and specifically to a heat dissipation device for air classifiers. Background Technology
[0002] The air classifier has fixed bearings on both the upper and lower rotors. The upper bearing is located outside the machine body and is cooled quickly by air, so there is no high temperature. However, the lower bearing is inside the machine body and is constantly baked by hot air from below, which can easily cause the bearing to overheat and trigger an alarm, leading to equipment shutdown. A suitable improvement method is to add an air-cooled heat dissipation device, that is, to introduce a new air duct to the lower bearing and use airflow to remove the heat from the lower bearing. However, during the improvement test, it was found that the air duct of this heat dissipation device is subjected to the erosion of the material and airflow from bottom to top, causing the air duct to break and leak, which cannot guarantee the heat dissipation of the lower bearing of the air classifier for a long time. Therefore, this paper proposes an air classifier heat dissipation device that can solve the above problems. Utility Model Content
[0003] In view of the problems existing in the background art, the purpose of this utility model is to provide a heat dissipation device for a classifier, which effectively solves the problems existing in the background art.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] The air classifier's heat dissipation device includes a lower bearing housing fitted on the outside of the lower bearing of the air classifier and an air inlet pipe connected to the lower bearing housing. The lower bearing housing is also provided with an air outlet. The air inlet pipe is also provided with a protective mechanism. The protective mechanism includes multiple polygonal retaining rings arranged along the length of the air inlet pipe and an air inlet pipe protection plate mounted on the polygonal retaining rings. The air inlet pipe protection plate includes a lower arc-shaped plate and an upper arc-shaped plate. The lower arc-shaped plate and the upper arc-shaped plate are connected by longitudinal ribs. The inner side of the upper arc-shaped plate is also provided with multiple sets of claws that cooperate with the polygonal retaining rings. The claws and the upper arc-shaped plate are connected by elastic elements.
[0006] Furthermore, the polygonal retaining ring includes two symmetrically arranged lobes, which are connected by bolts and nuts.
[0007] Furthermore, the polygonal retaining ring is an octagonal retaining ring.
[0008] Furthermore, the elastic element is a spring.
[0009] Furthermore, the longitudinal ribs are evenly distributed with multiple Y-shaped air holes along their length, and the upper arc plate is evenly distributed with multiple leakage holes along its length near the longitudinal ribs.
[0010] This utility model has the following beneficial technical effects:
[0011] This invention still uses air cooling to cool the lower bearing of the air classifier, but a protective mechanism is installed on the air inlet pipe. This mechanism effectively protects the air inlet pipe, preventing material particles and airflow from directly eroding it and extending its service life. In addition, the protective mechanism itself is double-layered and has a shock-absorbing design, which has a long service life and is not prone to causing mechanical fatigue of the air inlet pipe. This further ensures the long-term stable operation of the air classifier's heat dissipation device. This application has a novel design, stable operation, and is suitable for retrofitting existing equipment. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;
[0013] Figure 2 This is a schematic diagram of the cooperation structure between the protection mechanism and the air inlet pipe in an embodiment of this utility model. Detailed Implementation
[0014] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0015] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0016] like Figure 1 and Figure 2As shown, the air classifier heat dissipation device described in this embodiment includes a lower bearing housing 2 sleeved on the outside of the lower bearing 1 of the air classifier and an air inlet pipe 3 connected to the lower bearing housing 2. An air outlet 4 is also provided on the lower bearing housing 2. A protective mechanism is also provided on the air inlet pipe 3. The protective mechanism includes multiple polygonal retaining rings 5 arranged along the length of the air inlet pipe 3 and an air inlet pipe protection plate installed on the polygonal retaining rings 5. The air inlet pipe protection plate includes a lower arc plate 6 and an upper arc plate 7. The lower arc plate 6 is narrower than the upper arc plate 7 and mainly serves to disperse and guide the airflow. The lower arc plate 6 and the upper arc plate 7 are connected by longitudinal ribs 8. Multiple sets of claws 9 that cooperate with the polygonal retaining rings 5 are provided on the inner side of the upper arc plate 7. The claws 9 and the upper arc plate 7 are connected by an elastic element 10. The elastic element 10 is a spring. Preferably, each claw 9 is connected to the upper arc plate 7 by at least two springs to enhance the clamping firmness between the claw 9 and the polygonal retaining rings 5.
[0017] The polygonal retaining ring 5 is an octagonal retaining ring. When used with the claw 9, it can effectively prevent the protection mechanism from rotating around the air inlet pipe 3. The polygonal retaining ring 5 includes two symmetrically arranged petals, which are connected by bolts and nuts, making it convenient to install the polygonal retaining ring 5 onto the air inlet pipe 3.
[0018] To prevent the accumulation of material dust particles on the upper arc plate 7, multiple Y-shaped air holes 11 are evenly distributed along the length of the longitudinal rib 8. Air enters from the bottom of the Y-shaped air holes 11 and blows air from the upper two sides into the gap between the upper arc plate 7 and the lower arc plate 6. Multiple leakage holes 12 are evenly distributed along the length of the upper arc plate 7 near the longitudinal rib 8. When the airflow passes through the Y-shaped air holes 11 at high speed, it will create a negative pressure at the leakage holes 12. Material dust particles accumulated in the upper arc plate 7 can reach the gap between the upper arc plate 7 and the lower arc plate 6 through the leakage holes 12 under the action of gravity and negative pressure suction, and then be carried away by the airflow. This measure can effectively prevent the accumulation of material dust particles on the upper arc plate 7.
[0019] The working principle of this embodiment is as follows:
[0020] During installation, multiple polygonal retaining rings 5 are first tightened and fixed to the air inlet pipe 3 inside the machine body 13 using bolts and nuts. Then, the upper arc plate 7 and the lower arc plate 6 are fixed in place using claws 9. The vertical projection of the air inlet pipe 3 falls completely within the upper arc plate 7, ensuring the protection of the air inlet pipe 3. When the machine is started, the upward-flowing particulate material and airflow inside the air classifier are effectively blocked and diverted by the lower arc plate 6 and the upper arc plate 7, preventing them from directly scouring the lower part of the air inlet pipe 3. Compared with the prior art, this embodiment still uses air cooling to cool the lower bearing 1 of the air classifier. However, a protective mechanism is installed on the air inlet pipe 3 to extend its service life. In addition, the protective mechanism itself is double-layered and has a shock-absorbing design. It has a long service life and is not prone to causing mechanical fatigue of the air inlet pipe 3, further ensuring the long-term stable operation of the air classifier's heat dissipation device.
[0021] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A heat dissipation device for an air classifier, characterized in that, The system includes a lower bearing housing fitted on the outside of the lower bearing of the air classifier and an air inlet pipe connected to the lower bearing housing. The lower bearing housing is also provided with an air outlet. The air inlet pipe is also provided with a protective mechanism. The protective mechanism includes multiple polygonal retaining rings arranged along the length of the air inlet pipe and an air inlet pipe protective plate installed on the polygonal retaining rings. The air inlet pipe protective plate includes a lower arc plate and an upper arc plate. The lower arc plate and the upper arc plate are connected by longitudinal ribs. The inner side of the upper arc plate is also provided with multiple sets of claws that cooperate with the polygonal retaining rings. The claws and the upper arc plate are connected by elastic elements.
2. The heat dissipation device for the air classifier according to claim 1, characterized in that, The polygonal retaining ring includes two symmetrically arranged lobes, which are connected by bolts and nuts.
3. The heat dissipation device for the air classifier according to claim 2, characterized in that, The polygonal retaining ring is an octagonal retaining ring.
4. The heat dissipation device for the air classifier according to claim 1, characterized in that, The elastic element is a spring.
5. The heat dissipation device for the air classifier according to claim 1, characterized in that, The longitudinal rib has multiple Y-shaped air holes evenly distributed along its length, and the upper arc plate has multiple leakage holes evenly distributed along its length near the longitudinal rib.