Air-cooled shaft cooler and solid-liquid mixing device

Abstract

The utility model provides an air cooling shaft cooler and a solid-liquid mixing device. The air-cooled shaft cooler comprises a rotating shaft and a cooling device, the impeller sleeves the outer side of the rotating shaft, rotates synchronously with the rotating shaft and is provided with a plurality of blades, the blades are arranged in the circumferential direction of the rotating shaft at intervals, and an included angle is formed between the plane where the blades are located and the radial direction of the rotating shaft. The shaft cooling device solves the problem that in the prior art, the shaft cooling stability is poor.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft cooling and heat dissipation, in particular to an air-cooled shaft cooler and a solid-liquid mixing device. Background Art

[0002] Shaft components operate at high speeds in high-temperature, clean environments. Heat generated during shaft operation can be transferred to the bearings, causing lubrication failure and shortening bearing life, or even leading to bearing lock. To address this situation, a hollow shaft with a rotary joint, coupled with cooling water or oil, is often used to dissipate heat. However, high shaft speeds create the risk of leakage at the rotary joint. Utility Model Content

[0003] The main purpose of the utility model is to provide an air-cooled shaft cooler and a solid-liquid mixing device to solve the problem of poor shaft cooling stability in the prior art.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, an air-cooled shaft cooler is provided, comprising: a rotating shaft; an impeller, the impeller is sleeved on the outside of the rotating shaft and rotates synchronously with the rotating shaft, the impeller has a plurality of blades, the blades are arranged at intervals along the circumference of the rotating shaft, and an angle is formed between the plane where the blades are located and the radial direction of the rotating shaft.

[0005] Furthermore, along the rotation direction of the rotating shaft, the blades are inclined in a direction away from the rotating shaft.

[0006] Furthermore, the impeller also includes: a connecting section, which is sleeve-shaped and sleeved on the outside of the rotating shaft; a transition section, which is connected to the connecting section and extends radially along the rotating shaft, the blades are connected to the transition section, and a ventilation gap is formed between the side of the blade close to the rotating shaft and the connecting section.

[0007] Furthermore, the air-cooled shaft cooler also includes a shell, which is sleeved on the outside of the impeller, and the rotating shaft is passed through the shell to be connected with the impeller. The shell has an air inlet for air intake and an exhaust port for exhaust.

[0008] Furthermore, the housing has a through hole, the rotating shaft passes through the through hole and is connected to the impeller, a gap is set between the through hole and the rotating shaft, and the gap between the through hole and the rotating shaft serves as an air inlet.

[0009] Furthermore, the housing also has a protruding section, which is located at the through hole and extends along the axial direction of the rotating shaft. The protruding section is sleeved on the outside of the rotating shaft and is arranged with a gap from the rotating shaft.

[0010] Furthermore, along the rotation direction of the rotating shaft, the distance between the peripheral edge of the shell and the axis of the rotating shaft gradually decreases.

[0011] Furthermore, a step surface is formed between a position of the peripheral edge of the housing at the smallest distance from the axis of the rotating shaft and a position of the housing at the largest distance from the axis of the rotating shaft, and the exhaust port is located on the step surface.

[0012] Furthermore, the impeller is a heat-conducting metal part.

[0013] According to another aspect of the present invention, a solid-liquid mixing device is provided, comprising the above-mentioned air-cooled shaft cooler.

[0014] The technical solution of the present invention is applied, by arranging an impeller outside the rotating shaft, and the impeller adopts a circumferentially spaced and inclined blade arrangement, so that the impeller forms a centrifugal structure. When the impeller rotates under the drive of the rotating shaft, the high-speed rotation of the impeller causes the air at the impeller to flow faster, thereby reducing the air pressure at the impeller and forming a negative pressure. Under the action of the air pressure, the external gas automatically enters the impeller and is discharged through the gaps between the blades. In this way, the rotation of the impeller by the rotating shaft can realize the spontaneous passage of the airflow through the impeller, thereby playing a heat dissipation role for the impeller and the rotating shaft. The above-mentioned arrangement utilizes the structural characteristics of the impeller to achieve heat dissipation for the impeller and the rotating shaft, so that there is no need to set up a separate radiator or to introduce a cooling medium, thereby avoiding the solidification or leakage of the cooling medium under high temperature conditions, saving equipment for conveying, storing and processing the cooling medium, reducing energy consumption, ensuring that the rotating shaft can stably and continuously perform efficient heat dissipation, and achieving the effect of stable and efficient heat dissipation of the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 An axonometric view of the air-cooled shaft cooler of the present invention with a hidden rotating shaft is shown;

[0017] Figure 2 shows a front cross-sectional view of an air-cooled shaft cooler;

[0018] Figure 3 Shows a schematic structural diagram of the cooperation between the rotating shaft and the impeller;

[0019] Figure 4 shows a top cross-sectional view of an air-cooled shaft cooler;

[0020] Figure 5 A schematic diagram showing the flow of air in an air-cooled shaft cooler is shown;

[0021] Figure 6 The figure shows a structural diagram of the solid-liquid mixing device of the present invention.

[0022] The above drawings include the following reference numerals:

[0023] 10. Rotating shaft; 20. Impeller; 21. Blades; 22. Connecting section; 23. Transition section; 30. Casing; 31. Air inlet; 32. Exhaust port; 33. Extending section. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0026] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings, or with reference to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0027] In order to solve the problem of poor shaft cooling stability in the prior art, the utility model provides an air-cooled shaft cooler and a solid-liquid mixing device.

[0028] like Figures 1 to 5 The air-cooled shaft cooler shown includes a rotating shaft 10 and an impeller 20. The impeller 20 is sleeved on the outside of the rotating shaft 10 and rotates synchronously with the rotating shaft 10. The impeller 20 has a plurality of blades 21. The blades 21 are arranged at intervals along the circumference of the rotating shaft 10, and an angle is formed between the plane where the blades 21 are located and the radial direction of the rotating shaft 10.

[0029] In this embodiment, an impeller 20 is arranged outside the rotating shaft 10, and the impeller 20 adopts a circumferentially spaced and inclined blade 21 arrangement, so that the impeller 20 forms a centrifugal structure. When the impeller 20 is driven by the rotating shaft 10 to rotate, the high-speed rotation of the impeller 20 causes the air at the impeller 20 to flow faster, thereby reducing the air pressure at the impeller 20 and forming a negative pressure. The external air will automatically enter the impeller 20 under the action of the air pressure and be discharged through the gaps between the blades 21. In this way, the rotating shaft 10 is used to drive the impeller 20 to rotate, so that the air flow can spontaneously pass through the impeller 20, thereby having a heat dissipation effect on the impeller 20 and the rotating shaft 10. The above-mentioned setting method utilizes the structural characteristics of the impeller 20 to achieve heat dissipation of the impeller 20 and the rotating shaft 10, so that there is no need to set up a separate radiator, nor is there a need to introduce a cooling medium, thereby avoiding the solidification or leakage of the cooling medium under high temperature conditions, saving equipment for conveying, storing, and processing the cooling medium, reducing energy consumption, and ensuring that the rotating shaft 10 can stably and continuously perform efficient heat dissipation, thereby achieving the effect of stable and efficient heat dissipation of the rotating shaft 10.

[0030] It should be noted that the air-cooled shaft cooler of this embodiment can be applied to a solid-liquid mixing device, such as Figure 6 Of course, it can also be used in other high-temperature, high-speed environments, or for shafts with clean requirements.

[0031] like Figure 4 and Figure 5 As shown, in this embodiment, along the rotation direction of the rotating shaft 10, the blades 21 are inclined in a direction away from the rotating shaft 10, so that the surface of the blades 21 is substantially aligned with the direction of the airflow from the inside to the outside. This allows the airflow to flow rapidly under the influence of the blades 21, thereby increasing the air intake volume, improving the air convection heat transfer coefficient, and thus improving the heat transfer efficiency, while also preventing the blades 21 from affecting the airflow. Of course, the specific inclination angle of the blades 21, that is, the aforementioned angle, can be set accordingly as needed.

[0032] like Figure 3As shown, in this embodiment, the impeller 20 further includes a connecting section 22 and a transition section 23. The connecting section 22 is sleeve-shaped and is sleeved on the outside of the rotating shaft 10. The connecting section 22 and the rotating shaft 10 adopt an interference fit, so that the rotating shaft 10 can drive the connecting section 22 to rotate together. The transition section 23 is connected to the connecting section 22 and extends radially along the rotating shaft 10. In this embodiment, the transition section 23 adopts a plate-like structure, and its surface is perpendicular to the axis of the rotating shaft 10. The blades 21 are connected to the surface of the transition section 23, so that the blades 21 are upright on the transition section 23. Since the blades 21 are arranged along the circumference of the rotating shaft 10, the transition section 23 adopts an annular plate-like structure, and its inner ring is connected to the connecting section 22, so that the impeller 20 forms an integral component. At the same time, considering the air intake, this embodiment forms a ventilation gap between the side of the blade 21 close to the rotating shaft 10 and the connecting section 22. In other words, there is no connection between the inner side of the blade 21 and the connecting section 22. The ventilation gap between the two allows airflow to pass through, so that the airflow can enter the ventilation gap, and then flow from the inner side of the blade 21 through the gap between the blades 21 to the outer side of the blade 21, achieving flow and heat dissipation. Of course, the specific structure of the impeller 20 is not limited to the above-mentioned method of this embodiment. The structure of the impeller 20 can also be adjusted as needed. For example, the inner side of the blade 21 can be directly connected to the outer wall of the connecting section 22, and ventilation holes can be opened on the connecting section 22 to achieve smooth airflow.

[0033] It should be noted that the inside and outside mentioned in this embodiment refer to the radial direction of the rotating shaft 10, the direction close to the center line of the rotating shaft 10 is the inside, and the direction away from the center line of the rotating shaft 10 is the outside.

[0034] like Figure 1 and Figure 2 As shown, the air-cooled shaft cooler of this embodiment further includes a housing 30, which is sleeved on the outside of the impeller 20. The rotating shaft 10 is passed through the housing 30 to connect with the impeller 20. The housing 30 has an air inlet 31 for air intake and an exhaust port 32 for exhaust. The provision of the housing 30 can, on the one hand, protect the impeller 20 and other components, preventing the rotation of the impeller 20 from affecting external components or the impeller 20 from being affected by external components. On the other hand, the housing 30 can further control the flow of the airflow, so that the airflow can only flow within the housing 30, ensuring that the hot gas formed after the airflow absorbs heat can be discharged stably, preventing the hot gas from affecting other components.

[0035] Since the height of the impeller 20 along the axial direction of the rotating shaft 10 is not high, the outer shell 30 of this embodiment is set to a flat structure, and a through hole is set on the end face. The through hole is connected to the cavity inside the outer shell 30, and the rotating shaft 10 can pass through the through hole to connect with the connecting section 22 of the impeller 20, thereby realizing the coordination of rotation with the impeller 20. At the same time, this embodiment adopts a method of setting a gap between the through hole and the rotating shaft 10, so that the size of the through hole is larger than the outer diameter of the rotating shaft 10, and thus a certain gap is formed between the through hole and the rotating shaft 10. The gap is connected to the ventilation gap on the inner side of the blade 21, so that the gap can be used as an air inlet 31 to realize the air flow entering the outer shell 30 and entering the inner side of the blade 21. Since the distance between the air inlet 31 at this position and the inner side of the blade 21 are close and directly connected, it is beneficial for the air flow to quickly enter the outer shell 30, thereby facilitating efficient heat dissipation. Of course, in addition to setting the air inlet 31 on the outer peripheral side of the rotating shaft 10, openings can also be set at other positions of the shell as the air inlet 31, as long as it can be connected with the cavity in the outer shell 30 to enable air flow to enter the cavity from the air inlet 31 and flow at high speed driven by the impeller 20 to achieve heat dissipation.

[0036] In this embodiment, the housing 30 further includes an extension section 33, which is located at the through-hole and extends axially along the shaft 10. The extension section 33 is sleeved on the outside of the shaft 10 and is spaced apart from the shaft 10. The extension section 33 of this embodiment also has a cylindrical structure, one end of which is connected to the inner edge of the through-hole, and the axis of the cylindrical structure substantially coincides with the axis of the shaft 10, so that the extension section 33 extends a distance from the through-hole along the axial direction of the shaft 10 away from the cavity. In this way, the extension section 33 can facilitate the installation and fixation of the outer shell 30 on the one hand, and the installation and fixation of the air-cooled shaft cooler on the equipment can be achieved by setting mounting holes and other structures on the upper surface of the outer shell 30 or the extension section 33. On the other hand, it can stabilize the airflow. The airflow rotates circumferentially under the pressure on the inner side of the blade 21, and the setting of the extension section 33 requires the airflow to move a certain distance along the extension section 33 before entering the inner side of the blade 21, so that the airflow gradually forms a spiral flow form when flowing from the extension section 33 to the inner side of the blade 21, thereby ensuring that the airflow smoothly enters the cavity and is smoothly discharged through the blade 21 and the cavity, thereby ensuring high efficiency of heat dissipation.

[0037] like Figure 4As shown, the housing 30 of this embodiment does not adopt a regular oblate cylindrical structure, but rather a volute-shaped structure, that is, the upper and lower side surfaces of the housing 30 perpendicular to the axis of the rotating shaft 10 are flat, and the through-holes and the extension section 33 are provided on the flat surface. The circumferential side of the housing 30 is not a complete circle, but is formed in a form in which the distance between the circumferential edge of the housing 30 and the axis of the rotating shaft 10 gradually decreases along the rotation direction of the rotating shaft 10, so that the circumferential side of the housing 30 forms a spiral structure, and the radius of the circumferential side gradually decreases along the circumference. In this way, after the airflow is discharged from the gaps between the blades 21 under the action of the blades 21, the airflow will act on the inner wall of the housing 30. Due to the shape of the housing 30, when the airflow acts on the inner wall of the housing 30, it will continue to flow along the inner wall without impacting the inner wall of the housing 30 and causing turbulence, further ensuring that the airflow can flow smoothly, thereby helping to ensure stable and efficient heat dissipation.

[0038] In this embodiment, the spiral structure of the housing 30 rotates 360 degrees in the circumferential direction. That is, starting from the position on the circumferential edge of the housing 30 that is farthest from the rotating shaft 10, it gradually extends inward in the circumferential direction, so that the distance between it and the rotating shaft 10 gradually decreases until it rotates approximately 360 degrees. At this time, a line is formed between the position on the circumferential edge of the housing 30 that is the smallest distance from the axis of the rotating shaft 10 and the position that is the largest distance from the axis of the rotating shaft 10. This line roughly coincides with the radial direction of the rotating shaft 10 at this point, forming a step surface at the position of this line, and the exhaust port 32 is located at the step surface. This allows the airflow passing through the blades 21 to be directly discharged from the exhaust port 32 at the step surface under the action of the inner wall of the housing 30. On the one hand, the position of the exhaust port 32 is fixed, which is convenient for docking and matching with external components. On the other hand, it is conducive to the rapid discharge of hot air and ensures the effect of continuous heat dissipation.

[0039] Of course, the structure of the housing 30 is not limited to the above-mentioned structure of this embodiment, and it can also be adjusted as needed, for example, directly adopting a cylindrical structure, etc. As long as it can accommodate the impeller 20 and provide the air inlet 31 and the air outlet 32 ​​for air intake and exhaust.

[0040] Preferably, the impeller 20 of this embodiment is a heat-conducting metal part. More specifically, the impeller 20 of this embodiment is made of aluminum alloy, which has better thermal conductivity and helps to improve the heat dissipation effect, thereby taking into account both thermal conductivity and mechanical properties.

[0041] It should be noted that, in the above embodiments, a plurality refers to at least two.

[0042] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0043] 1. Solve the problem of poor shaft cooling stability in the existing technology;

[0044] 2. It has the ability to self-absorb air and can be used as a heat sink while extracting air, without the need for a separate cooling fan or other external energy source;

[0045] 3. Avoid solidification or leakage of cooling medium under high temperature conditions, save equipment for cooling medium transportation, storage and processing, and reduce energy consumption;

[0046] 4. The air intake is increased, and the shaft can stably and continuously dissipate heat efficiently, achieving the effect of stable and efficient heat dissipation of the shaft;

[0047] 5. There is no pollution during use, which can meet the cleanliness requirements and there is no need to consider the medium emission problem.

[0048] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0050] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An air-cooled shaft cooler, characterized in that: include: Rotating shaft (10); an impeller (20), the impeller (20) being sleeved on the outside of the rotating shaft (10) and rotating synchronously with the rotating shaft (10), the impeller (20) having a plurality of blades (21), the blades (21) being arranged at intervals along the circumference of the rotating shaft (10), and an angle being formed between a plane on which the blades (21) are located and a radial direction of the rotating shaft (10); The impeller (20) further comprises a connecting section (22) and a transition section (23); the connecting section (22) is sleeve-shaped and sleeved on the outside of the rotating shaft (10); the transition section (23) is connected to the connecting section (22) and extends radially along the rotating shaft (10); the blades (21) are connected to the transition section (23), and a ventilation gap is formed between the side of the blades (21) close to the rotating shaft (10) and the connecting section (22); The air-cooled shaft cooler further comprises a housing (30), the housing (30) being sleeved on the outside of the impeller (20), the housing (30) having an air inlet (31) for air intake and an air outlet (32) for air exhaust, the housing (30) having a through hole, the rotating shaft (10) passing through the through hole to be connected to the impeller (20), a gap being provided between the through hole and the rotating shaft (10), the gap between the through hole and the rotating shaft (10) serving as the air inlet (31), and the gap being communicated with the ventilation gap; The housing (30) further comprises a protruding section (33), the protruding section (33) being located at the through hole and extending along the axial direction of the rotating shaft (10), the protruding section (33) being sleeved on the outside of the rotating shaft (10) and being spaced apart from the rotating shaft (10).

2. The air-cooled shaft cooler according to claim 1, characterized in that: Along the rotation direction of the rotating shaft (10), the blades (21) are inclined in a direction away from the rotating shaft (10).

3. The air-cooled shaft cooler according to claim 1, characterized in that: Along the rotation direction of the rotating shaft (10), the distance between the peripheral edge of the housing (30) and the axis of the rotating shaft (10) gradually decreases.

4. The air-cooled shaft cooler according to claim 3, characterized in that: A step surface is formed between a position on the peripheral edge of the housing (30) at the smallest distance from the axis of the rotating shaft (10) and a position at the largest distance from the axis of the rotating shaft (10), and the exhaust port (32) is located on the step surface.

5. The air-cooled shaft cooler according to claim 1, characterized in that: The impeller (20) is a heat-conducting metal part.

6. A solid-liquid mixing device, characterized in that: The invention comprises the air-cooled shaft cooler according to any one of claims 1 to 5.

Images