Heat dissipation assembly and centrifugal extractor

Abstract

The utility model belongs to the field of liquid-liquid extraction separation, and particularly relates to a heat dissipation assembly and a centrifugal extractor. In order to improve the heat dissipation capability, the maximum rotating speed and the service life of the centrifugal extractor, the utility model provides the heat dissipation assembly and the centrifugal extractor comprising the heat dissipation assembly. The heat dissipation assembly comprises a bearing seat and a transmission shaft, the transmission shaft is an output shaft of the rotary power source or a rotary drum rotating shaft in transmission connection with the output shaft of the rotary power source, the bearing seat comprises a bearing sleeve used for installing and supporting a bearing, and a supporting seat is further arranged on one axial side of the bearing sleeve and comprises a fan blade installation cavity. Fan blades which are installed on the transmission shaft and synchronously rotate along with the transmission shaft are arranged in the fan blade installation cavity, an air inlet and an air outlet are further formed in the side wall of the fan blade installation cavity, and the air outlet or the air inlet is arranged towards the bearing sleeve. The fan blades are used for air-cooling the bearing sleeve, so that the heat dissipation capability and the maximum rotating speed of the centrifugal extractor can be effectively improved, and the service life can be effectively prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of liquid-liquid extraction and separation, in particular to a heat dissipation component and a centrifugal extractor. Background Art

[0002] In centrifugal extractors, the drum rotates at high speeds, either directly driven by the motor's output shaft or driven by a drum shaft connected to the motor's output shaft. Bearings, as key components supporting rotating parts, endure immense loads and friction from high-speed rotation over extended periods of operation. In typical applications, bearing heat generation is minimal, and the temperatures of the bearings and lubricant in the bearing housing are sufficient for operational use.

[0003] However, in some special application scenarios with high temperature and high speed, these factors can cause bearings to overheat. If the heat is not dissipated or cooled in a timely and effective manner, it will cause lubrication failure and increased wear, thereby reducing service life and increasing maintenance costs.

[0004] For example, some extraction systems must be carried out at high temperatures. The high-temperature liquid will transfer heat to the bearings, causing the bearings to heat up and the lubricating oil to overheat. For another example, when the motor is running at high speed and the centrifugal extractor is working continuously for a long time without interruption, the bearings will heat up. When the temperature of the bearing seat and the lubricating oil is high, it will affect the service life of the centrifugal extractor. Utility Model Content

[0005] The purpose of the utility model is to provide a heat dissipation component to solve the technical problems of lubrication failure and increased wear in special application scenarios, which affect the service life of the centrifugal extractor.

[0006] The purpose of this utility model is to provide a centrifugal extractor to solve the same technical problems mentioned above.

[0007] To achieve the above objectives, the technical solution of the heat dissipation assembly provided by the present invention is:

[0008] A heat dissipation assembly includes a bearing seat and a transmission shaft for driving a drum to rotate, the transmission shaft is the output shaft of a rotating power source or a drum shaft connected to the output shaft of the rotating power source, the bearing seat includes a bearing sleeve for mounting and supporting the bearing, and a support seat is also provided on one axial side of the bearing sleeve, the support seat includes a fan blade mounting cavity, a fan blade is provided in the fan blade mounting cavity, which is mounted on the transmission shaft and rotates synchronously with the transmission shaft, and an air inlet and an air outlet are also provided on the side wall of the fan blade mounting cavity, and the air outlet or the air inlet is arranged toward the bearing sleeve.

[0009] Furthermore, the inner diameter of the support seat is larger than the outer diameter of the bearing sleeve, a transition step surface is provided at the junction of the support seat and the bearing sleeve, and the air outlet or the air inlet is provided on the transition step surface.

[0010] Furthermore, the direction of the air outlet or the air inlet is parallel to the axial direction of the transmission shaft.

[0011] Furthermore, the support seat is provided with an air inlet hole, the air outlet end of the air inlet hole constitutes the air inlet, and the air inlet end of the air inlet hole is arranged on the outer peripheral surface of the support seat; or, the support seat is provided with an air outlet hole, the air inlet end of the air outlet hole constitutes the air outlet, and the air outlet end of the air outlet hole is arranged on the outer peripheral surface of the support seat.

[0012] Furthermore, the outer diameter of the support seat is equal to the outer diameter of the bearing sleeve, and a protrusion is provided on the outer peripheral surface of the support seat; an air outlet hole is provided on the support seat and the protrusion, the air outlet of the air outlet hole is located on the protrusion, and the air outlet constitutes the air outlet, or, an air inlet hole is provided on the support seat and the protrusion, the air inlet of the air inlet hole is located on the protrusion, and the air inlet of the air inlet hole constitutes the air inlet.

[0013] Furthermore, a heat sink is provided on the outer peripheral surface of the bearing sleeve, and the air outlet or the air inlet is arranged toward the heat sink.

[0014] Furthermore, a side of the support seat away from the bearing sleeve has a mounting structure for mounting a rotary power source.

[0015] Furthermore, there are at least two air outlets, and the air outlets are arranged at intervals along the same circumference; there are at least two air inlets, and the air inlets are arranged at intervals along the same circumference.

[0016] Furthermore, the support seat has a pressing protrusion for pressing and installing the bearing located in the bearing sleeve.

[0017] The heat dissipation assembly provided by the present invention has the following beneficial effects: This invention is an improved invention. When the drive shaft rotates, the fan blades rotate synchronously, allowing cooling air to blow through the air outlet onto the bearing sleeve, or allowing hot air from the bearing sleeve to enter the air inlet, while cool air from the surrounding environment moves to the bearing sleeve, thereby cooling the bearing sleeve, bearing, and lubricating oil. When the air outlet faces the bearing sleeve, heat generated by friction between the inner and outer rings of the bearing is also transferred to the fan blade mounting cavity through the drive shaft, bearing sleeve, and support seat. Cooling air enters the fan blade mounting cavity from the air inlet and exits the fan blade mounting cavity from the air outlet, effectively reducing the temperature of the fan blade mounting cavity and the portion of the drive shaft located therein, thereby indirectly cooling the bearing sleeve, bearing, and lubricating oil. The higher the speed of the drive shaft, the higher the speed of the fan blades, and the greater the heat dissipation capacity of the heat dissipation assembly. This ensures that the temperatures of the bearing seat and lubricating oil remain normal even when the drive shaft rotates at high speeds, significantly improving the practicality of the centrifugal extractor and extending the service life of the bearings, drive shaft, bearing seat (especially the bearing sleeve), and lubricating oil.

[0018] To achieve the above-mentioned purpose, the technical solution of the centrifugal extractor provided by the present invention is:

[0019] A centrifugal extractor comprises a drum connected to a transmission shaft, a heat dissipation assembly comprises a bearing seat and a transmission shaft for driving the drum to rotate, the transmission shaft is the output shaft of a rotary power source or a drum shaft connected to the output shaft of a rotary power source, the bearing seat comprises a bearing sleeve for mounting and supporting a bearing, a support seat is further provided on one axial side of the bearing sleeve, the support seat comprises a fan blade mounting cavity, a fan blade mounted on the transmission shaft and rotating synchronously with the transmission shaft is provided in the fan blade mounting cavity, an air inlet and an air outlet are further provided on the side wall of the fan blade mounting cavity, and the air outlet or the air inlet is arranged toward the bearing sleeve.

[0020] Furthermore, the inner diameter of the support seat is larger than the outer diameter of the bearing sleeve, a transition step surface is provided at the junction of the support seat and the bearing sleeve, and the air outlet or the air inlet is provided on the transition step surface.

[0021] Furthermore, the direction of the air outlet or the air inlet is parallel to the axial direction of the transmission shaft.

[0022] Furthermore, the support seat is provided with an air inlet hole, the air outlet end of the air inlet hole constitutes the air inlet, and the air inlet end of the air inlet hole is arranged on the outer peripheral surface of the support seat; or, the support seat is provided with an air outlet hole, the air inlet end of the air outlet hole constitutes the air outlet, and the air outlet end of the air outlet hole is arranged on the outer peripheral surface of the support seat.

[0023] Furthermore, the outer diameter of the support seat is equal to the outer diameter of the bearing sleeve, and a protrusion is provided on the outer peripheral surface of the support seat; an air outlet hole is provided on the support seat and the protrusion, the air outlet of the air outlet hole is located on the protrusion, and the air outlet constitutes the air outlet, or, an air inlet hole is provided on the support seat and the protrusion, the air inlet of the air inlet hole is located on the protrusion, and the air inlet of the air inlet hole constitutes the air inlet.

[0024] Furthermore, a heat sink is provided on the outer peripheral surface of the bearing sleeve, and the air outlet or the air inlet is arranged toward the heat sink.

[0025] Furthermore, a side of the support seat away from the bearing sleeve has a mounting structure for mounting a rotary power source.

[0026] Furthermore, there are at least two air outlets, and the air outlets are arranged at intervals along the same circumference; there are at least two air inlets, and the air inlets are arranged at intervals along the same circumference.

[0027] Furthermore, the support seat has a pressing protrusion for pressing and installing the bearing located in the bearing sleeve.

[0028] The beneficial effects of the centrifugal extractor provided by the present invention are as follows: the present invention is an improved invention. When the transmission shaft drives the drum to rotate, the fan blades can rotate synchronously so that the cooling air is blown onto the bearing sleeve through the air outlet, or the hot air at the bearing sleeve enters the air inlet, and the cold air in the environment is moved to the bearing sleeve, thereby cooling the bearing sleeve, the bearing and the lubricating oil. When the air outlet is facing the bearing sleeve, the heat generated by the friction between the inner and outer rings of the bearing will also be transferred to the fan blade mounting cavity through the transmission shaft, the bearing sleeve and the support seat. The cooling air enters the fan blade mounting cavity from the air inlet and leaves the fan blade mounting cavity from the air outlet, which can effectively reduce the temperature of the fan blade mounting cavity and the part of the transmission shaft located in the fan blade mounting cavity, thereby indirectly cooling the bearing sleeve, the bearing and the lubricating oil. When the speed of the drive shaft is higher, the speed of the fan blade is also higher, and the heat dissipation capacity of the heat dissipation component is also stronger, thereby ensuring that the temperature of the bearing seat and the lubricating oil is at a normal state when the drive shaft rotates at high speed, extending the service life of the bearing, drive shaft, bearing seat (especially the bearing sleeve therein) and lubricating oil, and thus extending the service life of the centrifugal extractor. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the main structure of a specific implementation method of the centrifugal extractor in specific embodiment 1 of the present utility model;

[0030] Figure 2 for Figure 1 A magnified view of the structure at point A;

[0031] Figure 3This is a structural schematic diagram of another specific implementation method of the centrifugal extractor in specific embodiment 1 of the present utility model;

[0032] Figure 4 This is a structural schematic diagram of another specific implementation method of the specific embodiment 1 of the centrifugal extractor of the present utility model;

[0033] Figure 5 This is a partial structural diagram of a specific embodiment 2 of the centrifugal extractor of the present utility model;

[0034] Figure 6 This is a partial structural diagram of specific embodiment 3 of the centrifugal extractor of the present utility model.

[0035] Description of reference numerals:

[0036] 1. Rotating motor; 2. Main body; 3. Motor seat; 4. Top pressure protrusion; 5. Coupling; 6. Fan blade; 7. Air inlet hole; 71. Air inlet; 8. Air outlet hole; 81. Air outlet; 9. Packing seal structure; 10. Bearing; 11. Bearing sleeve; 12. Heat sink; 13. Drum shaft; 14. Lower pressure cover; 15. Support seat. DETAILED DESCRIPTION

[0037] In order to solve the problems in the background technology, the core inventive concept of the present invention is: fan blades that rotate with the transmission shaft are arranged on the transmission shaft to reduce the temperature of the bearing.

[0038] The present invention is further described in detail below with reference to the embodiments.

[0039] Specific embodiment 1 of the centrifugal extractor provided by the utility model:

[0040] like Figures 1 to 4 As shown in the figure, as a basic embodiment of the first category, the centrifugal extractor includes a main body 2 having a rotating drum, a heat sink assembly mounted on the upper end of the main body 2, and a rotary power source mounted on the upper end of the heat sink assembly. The rotary power source can be a rotary motor 1. The bearing seat is fixedly connected to the main body. It should be noted that the improvements of this utility model do not involve the main body 2 and will not be described in detail here.

[0041] The heat dissipation assembly includes a bearing seat and a transmission shaft for driving the drum to rotate. The transmission shaft is a drum shaft 13 that is transmission-connected to the output shaft of the rotating power source. The bearing seat includes a bearing sleeve 11 for mounting and supporting the bearing 10. A support seat 15 is also provided on one axial side of the bearing sleeve 11. The support seat 15 has a fan blade mounting cavity. The fan blade mounting cavity is provided with a fan blade 6 mounted on the transmission shaft and rotating synchronously with the transmission shaft. An air inlet 71 and an air outlet 81 are also provided on the side wall of the fan blade mounting cavity. The air outlet 81 is arranged toward the bearing sleeve 11. The support seat 15 has a mounting structure for mounting the rotating power source on the side away from the bearing sleeve 11. Specifically, the mounting structure can be a mounting flange or a mounting plate. The rotating power source can be fixedly connected to the mounting structure by flange connection or welding.

[0042] It should be noted that the relationship between the air outlet 81, the air inlet 71, the air outlet hole 8 and the air inlet hole 7 is as follows: Figures 2-4 As shown, the air outlet 81 is the air outlet end of the air outlet hole 8, and the air inlet 71 is the air outlet end of the air inlet hole 7. The air outlet 81 and the air inlet 71 have no length, but the air inlet hole 7 and the air outlet hole 8 have length, and both the air inlet hole 7 and the air outlet hole 8 have an air inlet end.

[0043] The air inlet hole 7 and the air outlet hole 8 can be of any shape. Taking the air inlet hole 7 as an example:

[0044] For example, in Figure 2 In the embodiment of type 1-1 shown, the air inlet through hole 7 is a linear through hole.

[0045] For example, in Figure 3 In the illustrated specific implementation manner of type 1-2, the air inlet through hole 7 is a "Z"-shaped through hole, which includes two horizontal holes and a vertical hole connecting the two horizontal holes.

[0046] Of course, in other basic embodiments of the first category, the air inlet hole 7 may also be an L-shaped hole, and correspondingly, the air outlet hole may also be a linear hole or an L-shaped hole. In this embodiment, it is sufficient to ensure that the air outlet 81 is arranged toward the bearing sleeve 11.

[0047] It is necessary to explain in particular that Figure 3 As shown, the air inlet end of the air inlet hole 7 and the air outlet 81 can be located on the same side of the fan blade's axis. The cooling air enters from the air inlet end of the air inlet hole 7 and reaches the air inlet 71 through the internal channel of the air inlet hole 7. When in use, the drum shaft 13 is in a vertical state, and the air inlet 71 and the air outlet 81 are respectively located on the upper and lower sides of the fan blade 6.

[0048] In order to simplify the structure, the following improvements are made to the basic implementation of Category 1:

[0049] like Figure 2 As shown, in the preferred basic specific embodiments of categories 1-3, the transmission shaft is a drum shaft 13, and a coupling 5 for connecting the transmission shaft to the output shaft of the rotating power source is also provided in the fan blade mounting cavity. At this time, the fan blade mounting cavity has both the functions of installing the fan blades 6 and the coupling 5, and the structure is simple.

[0050] However, in other specific embodiments, reference Figure 2 As shown, in the basic specific implementation methods of categories 1 to 4, a coupling support seat can also be provided separately, and a coupling installation cavity is provided in the coupling support seat, and the coupling 5 is located in the coupling installation cavity.

[0051] In the second basic embodiment, different from the first basic embodiment, the transmission shaft can also be directly the output shaft of the rotary power source.

[0052] To improve the cooling effect of the heat dissipation component, the air outlet 81 and the air inlet 71 are improved as follows:

[0053] In a preferred embodiment of category 3-1, when the air outlet 81 and the air inlet 71 are small, there are at least two air outlets 81, and the air outlets 81 are arranged along the same circumferential intervals so that the gas is blown evenly on the outer surface of the bearing sleeve 11 to improve the heat dissipation effect; there are at least two air inlets 71, and the air inlets 71 are arranged along the same circumferential intervals so that the gas enters the fan blade mounting cavity evenly.

[0054] For example, the at least two air outlets 81 include two, three, four, five, or more, and the at least two air inlets 71 include two, three, four, five, or more. The number of air inlets 71 and air outlets 81 may be the same or different, and this embodiment does not limit the number of air inlets 71 and air outlets 81.

[0055] It is understandable that the greater the number of air outlets 81 , the larger the flow area, so that the air flow passing through the air outlets 81 is greater and the cooling effect of the heat dissipation component is better.

[0056] It should be noted that if the number of air outlets 81 is too large, the flow area will be too large, which will reduce the air flow velocity at the air outlets 81 and reduce the heat dissipation effect at the bearing sleeve 11. Therefore, the number of air inlets 71 and air outlets 81 can be arranged according to the size of the fan blades 6, the rotation speed of the fan blades 6 and / or the size of the support base 15.

[0057] In the preferred embodiment of type 3-2, when the air outlet 81 and the air inlet 71 are arc-shaped elongated holes, the number of the air inlet 71 or the air outlet 81 can be one as needed. The shape and number of the air inlet and outlet are not limited in this embodiment.

[0058] In the 3-3 specific embodiment, the air outlet 81 and the air inlet 71 are relatively small, and there is only one air outlet 81 and one air inlet 71. At this time, compared with the prior art, the heat dissipation effect of the centrifugal extractor in the 3-3 specific embodiment is better than that of the existing centrifugal extractor, which can increase the maximum speed of the centrifugal extractant and extend the service life of the bearing 10, the transmission shaft, the bearing seat (especially the bearing sleeve 11 therein) and the lubricating oil.

[0059] When the transmission shaft rotates, the fan blades 6 can rotate synchronously so that the cooling air is blown onto the bearing sleeve 11 through the air outlet 81, thereby cooling the bearing sleeve 11, the bearing 10 and the lubricating oil. At the same time, the heat generated by the friction between the inner and outer rings of the bearing 10 will also be transferred to the fan blade mounting cavity through the transmission shaft, the bearing sleeve 11 and the support seat 15. The cooling air enters the fan blade mounting cavity from the air inlet 71 and leaves the fan blade mounting cavity from the air outlet 81, which can effectively reduce the temperature of the fan blade mounting cavity and the part of the transmission shaft located in the fan blade mounting cavity, thereby indirectly cooling the bearing sleeve 11, the bearing 10 and the lubricating oil. When the speed of the transmission shaft is higher, the speed of the fan blades 6 is also higher, and the heat dissipation capacity of the heat dissipation component is also stronger, thereby ensuring that the temperature of the bearing seat and the lubricating oil is in a normal state when the transmission shaft rotates at high speed, thereby extending the service life of the bearing 10, the transmission shaft, the bearing seat (especially the bearing sleeve 11 therein) and the lubricating oil.

[0060] In order to simplify the structure, the position of the air outlet 81 is improved as follows in this embodiment:

[0061] like Figure 2 As shown, in the preferred specific embodiment of category 4-1, the inner diameter of the support seat 15 is larger than the outer diameter of the bearing sleeve 11, and a transition step surface is provided at the junction of the support seat 15 and the bearing sleeve 11. The air outlet 81 is arranged on the transition step surface, and the direction of the air outlet 81 is parallel to the axial direction of the transmission shaft. The structure is simple and easy to process, and the length of the air outlet hole 8 corresponding to the air outlet 81 is relatively short, which is conducive to the rapid discharge of cooling air from the air outlet 81.

[0062] In a preferred embodiment of Class 4-2, refer to Figure 2 As shown, different from the specific embodiment of type 4-1, the air outlet 81 can be directed obliquely downward and aligned with the bearing sleeve 11.

[0063] In a preferred embodiment of category 4-3, the outer diameter of the support seat 15 may also be equal to the outer diameter of the bearing sleeve 11. A protrusion is provided on the outer circumferential surface of the support seat 15. The support seat 15 and the protrusion are provided with an air outlet hole 8. The air outlet of the air outlet hole 8 is located on the protrusion, and the air outlet constitutes the air outlet 81. The number of protrusions may be one, two, or more, and each protrusion and the portion of the support seat 15 connected to the corresponding protrusion may be provided with an air outlet hole 8.

[0064] In a preferred embodiment of type 4-4, the support seat 15 is a rectangular seat, the length and width between the inner walls of the support seat 15 are greater than the outer diameter of the bearing sleeve 11, and the air outlet hole 8 is provided on the bottom plate of the support seat 15.

[0065] In the preferred specific embodiments of categories 4-5, the outer diameter of the support seat 15 is larger than the outer diameter of the bearing sleeve 11 , the inner diameter of the support seat 15 is smaller than the outer diameter of the bearing sleeve 11 , and the air outlet hole 8 is provided on the circumferential side wall of the support seat 15 .

[0066] In the specific embodiments of category 4-3, category 4-4 and category 4-5, the air outlet 81 may be directed obliquely downward and aligned with the bearing sleeve 11, or may be parallel to the axial direction of the transmission shaft.

[0067] In order to simplify the structure, the position of the air inlet 71 is improved as follows in this embodiment:

[0068] like Figure 2 As shown, in the preferred embodiment of category 5-1, the air inlet hole 7 is provided on the support base 15, and the air inlet end of the air inlet hole 7 is provided on the outer peripheral surface of the support base 15. This structure is simple and can prevent the air heated by the motor 1 from directly entering the air inlet 71, thereby improving the heat dissipation capacity. In this case, the air inlet 71 is located on the circumferential side wall of the fan blade mounting cavity.

[0069] However, in a preferred embodiment of Class 5-2, if Figure 4 As shown, an air intake hole 7 can also be provided on the motor base 3 of the motor 1. In this case, the air inlet 71 is located on the upper side wall of the fan blade mounting cavity. Of course, when the rotating power source is a pneumatic motor or other structure, the air intake hole 7 can also be provided on the corresponding rotating power source.

[0070] To further enhance heat dissipation, the following improvements are made to the heat dissipation component in this embodiment:

[0071] In the preferred embodiment of category 6-1, a heat sink 12 is further provided on the outer peripheral surface of the bearing sleeve 11, and the air outlet 81 is arranged toward the heat sink 12. The heat sink 12 can be a heat sink plate or heat sink fin or other structure. The heat sink 12 can increase the heat dissipation area and improve the heat dissipation capacity.

[0072] However, in the embodiment 6-2, heat sink 12 can be omitted. In this case, the maximum speed of the centrifugal extractor is lower than that of a centrifugal extractor equipped with heat sink 12. However, the maximum speed of the centrifugal extractor in the embodiment 6-2 is still greater than that of conventional centrifugal extractors, and the heat sink assembly can still provide a certain heat dissipation effect, thereby extending the service life of the bearing 10, the drive shaft, the bearing seat (especially the bearing sleeve 11 therein), and the lubricating oil. Furthermore, since heat sink 12 is not required, costs can be reduced.

[0073] In order to further simplify the structure, the specific improvements to the heat dissipation assembly in this embodiment are as follows:

[0074] like Figure 2 As shown, in the preferred specific embodiment of category 7-1, the support seat 15 has a pressing protrusion 4 for pressing the bearing 10 located in the bearing sleeve 11. At this time, the support seat 15 is also used as an upper pressure cover of the bearing sleeve 11. The structure is simple, and a packing sealing structure 9 is provided between the support seat 15 and the drive shaft to avoid leakage of lubricating oil.

[0075] However, in the specific implementation manner of type 7-2, an additional upper pressure cover may be manufactured separately, and the bearing 10 may be installed by pressing the upper pressure cover.

[0076] like Figures 1 and 2 As shown, the bearing sleeve 11 further includes a lower pressure cover 14 for pressing the bearing 10 , and a packing seal structure 9 is provided between the lower pressure cover 14 and the transmission shaft for preventing leakage of lubricating oil.

[0077] Specific embodiment 2 of the centrifugal extractor provided by the utility model:

[0078] The purpose of this embodiment is to provide a centrifugal extractor with a support seat located below the bearing sleeve.

[0079] In reference Figures 1 to 4 On the basis of Figure 5 As shown, the main difference between this embodiment and specific embodiment 1 is that: in specific embodiment 1, the support seat 15 is located above the bearing sleeve 11, thereby separating the rotating power source and the bearing sleeve 11, avoiding the heat of the rotating power source from being transferred to the bearing sleeve 11, and at the same time, the transmission shaft is a cantilever, and the bearing sleeve 11 is close to the drum, which can better ensure the dynamic balance of the drum during rotation; in this embodiment, as the eighth basic specific implementation method, the support seat 15 is located below the bearing sleeve 11. At this time, the wind blown out from the air outlet 81 can dissipate heat for the rotating power source and the bearing sleeve 11 at the same time.

[0080] Specific embodiment 3 of the centrifugal extractor provided by the utility model:

[0081] The purpose of this embodiment is to provide a centrifugal extractor with an air inlet arranged toward a bearing seat.

[0082] In reference Figures 1 to 5 On the basis of Figure 6 As shown, the main difference between this embodiment and specific embodiment 1 or 2 is that: in specific embodiment 1 or 2, the fan blade 6 is installed in the forward direction, and the air outlet 81 is arranged toward the bearing sleeve 11; while in this embodiment, as the ninth basic specific implementation method, the fan blade 6 is installed in the reverse direction, the positions of the air inlet 71 and the air outlet 81 are swapped, the air inlet 71 is arranged toward the bearing sleeve 11, the air inlet 71 is the air inlet of the air inlet hole 7, and the air outlet 81 is the air inlet of the air outlet hole 8. At this time, the direction of the airflow generated by the fan blade 6 is: from the side of the fan blade installation cavity close to the bearing sleeve 11 to the side of the fan blade installation cavity away from the bearing sleeve 11.

[0083] It should be noted that if Figure 6 As shown, the side of the support base 15 close to the bearing sleeve 11 is provided with an air inlet 71, and the air inlet 71 is used to absorb the heat at the bearing sleeve 11 into the fan blade installation cavity. The air outlet 81 is provided on the side of the support base 15 away from the bearing sleeve 11 (refer to Figure 4 As shown in the specific embodiment of type 5-2, the air outlet 81 is provided on the motor base 3), and / or the air outlet 81 is provided on the side wall of the support base 15. The hot air flow in the fan blade installation cavity flows out from the air outlet 81.

[0084] In this way, the fan blades 6 can absorb the hot air flow from the bearing sleeve 11, which is beneficial to reducing the temperature of the bearing sleeve 11 and indirectly reducing the temperature of the bearing 10, thereby extending the service life of components such as the bearing 10 and the bearing sleeve 11. This embodiment does not limit the number of air inlets 71 and air outlets 81.

[0085] It should be noted that the ninth embodiment can be obtained by exchanging the positions of the air inlet 71 and the air outlet 81 in the first to eighth embodiments. Specifically:

[0086] With reference to the 4-1 specific embodiment, in the 9-1 specific embodiment, the air inlet 71 is provided on the transition step surface, and the direction of the air inlet 71 is parallel to the axial direction of the transmission shaft.

[0087] Referring to the specific embodiment of type 4-2, in the specific embodiment of type 9-2, different from the specific embodiment of type 9-1, the direction of the air inlet 71 can be directed obliquely downward and aligned with the bearing sleeve 11.

[0088] Referring to the specific embodiment of category 4-3, in the specific embodiment of category 9-3, the outer diameter of the support seat 15 may also be equal to the outer diameter of the bearing sleeve 11. A protrusion is provided on the outer circumferential surface of the support seat 15. The support seat 15 and the protrusion are provided with an air intake hole 7. The air inlet of the air intake hole 7 is located on the protrusion, and the air inlet constitutes the air intake 71. The number of protrusions may be one, two, or more, and an air intake hole 7 may be provided on each protrusion and the portion of the support seat 15 connected to the corresponding protrusion.

[0089] Referring to the specific embodiment of type 4-4, in the specific embodiment of type 9-4, the support seat 15 is a rectangular seat, the length and width between the inner walls of the support seat 15 are both greater than the outer diameter of the bearing sleeve 11, and the air intake hole 7 is arranged on the bottom plate of the support seat 15.

[0090] Referring to the specific embodiments of category 4-5, in the specific embodiment of category 9-5, the outer diameter of the support seat 15 is larger than the outer diameter of the bearing sleeve 11, the inner diameter of the support seat 15 is smaller than the outer diameter of the bearing sleeve 11, and the air intake hole 7 is arranged on the circumferential side wall of the support seat 15.

[0091] In the specific embodiments of category 9-3, category 9-4 and category 9-5, the direction of the air inlet 71 can be directed obliquely downward and aligned with the bearing sleeve 11, or can be parallel to the axial direction of the transmission shaft.

[0092] Specific embodiments of the heat dissipation assembly provided by the utility model:

[0093] Reference Figures 1 to 6 As shown, the specific structure of the heat dissipation component in this embodiment is the same as the specific structure of any one of the heat dissipation components in specific embodiments 1 to 3 of the centrifugal extractor of the present invention, and will not be repeated here.

[0094] It should be noted that when the transmission shaft is a non-detachable output shaft of the rotary power source, the heat dissipation assembly includes the rotary power source; in other cases, the heat dissipation assembly does not include the rotary power source.

[0095] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments without inventive effort, or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention. At the same time, in the description of this specification, specific features, structures or characteristics can be combined in an appropriate manner in any one or more embodiments or examples.

Claims

1. A heat dissipation assembly, comprising a bearing seat and a transmission shaft for driving a drum to rotate, wherein the transmission shaft is an output shaft of a rotary power source or a drum shaft connected to the output shaft of the rotary power source, and the bearing seat comprises a bearing sleeve for mounting and supporting a bearing, characterized in that: A support seat is also provided on one axial side of the bearing sleeve, and the support seat includes a fan blade mounting cavity. A fan blade is provided in the fan blade mounting cavity, and the fan blade is installed on the transmission shaft and rotates synchronously with the transmission shaft. An air inlet and an air outlet are also provided on the side wall of the fan blade mounting cavity, and the air outlet or the air inlet is arranged toward the bearing sleeve.

2. The heat dissipation assembly according to claim 1, wherein: The inner diameter of the support seat is larger than the outer diameter of the bearing sleeve. A transition step surface is provided at the junction of the support seat and the bearing sleeve. The air outlet or the air inlet is arranged on the transition step surface.

3. The heat dissipation assembly according to claim 2, wherein: The direction of the air outlet or the air inlet is parallel to the axial direction of the transmission shaft.

4. The heat dissipation assembly according to claim 2, wherein: The support seat is provided with an air inlet hole, the air outlet end of the air inlet hole constitutes the air inlet, and the air inlet end of the air inlet hole is arranged on the outer peripheral surface of the support seat; or, the support seat is provided with an air outlet hole, the air inlet end of the air outlet hole constitutes the air outlet, and the air outlet end of the air outlet hole is arranged on the outer peripheral surface of the support seat.

5. The heat dissipation assembly according to claim 1, wherein: The outer diameter of the support seat is equal to the outer diameter of the bearing sleeve, and a protrusion is provided on the outer peripheral surface of the support seat; an air outlet hole is provided on the support seat and the protrusion, the air outlet of the air outlet hole is located on the protrusion, and the air outlet constitutes the air outlet, or, an air inlet hole is provided on the support seat and the protrusion, the air inlet of the air inlet hole is located on the protrusion, and the air inlet of the air inlet hole constitutes the air inlet.

6. The heat dissipation assembly according to any one of claims 1 to 5, wherein: A heat sink is further provided on the outer peripheral surface of the bearing sleeve, and the air outlet or the air inlet is arranged toward the heat sink.

7. The heat dissipation assembly according to any one of claims 1 to 5, wherein: A side of the support seat away from the bearing sleeve is provided with an installation structure for installing a rotating power source.

8. The heat dissipation assembly according to any one of claims 1 to 5, wherein: There are at least two air outlets, and the air outlets are arranged at intervals along the same circumference; there are at least two air inlets, and the air inlets are arranged at intervals along the same circumference.

9. The heat dissipation assembly according to any one of claims 1 to 5, wherein: The support seat has a pressing protrusion for pressing and installing the bearing located in the bearing sleeve.

10. A centrifugal extractor comprising a drum connected to a transmission shaft, characterized in that: It also includes a heat dissipation assembly as described in any one of claims 1 to 9.

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