Main shaft component of multi-head grader, grading impeller assembly and multi-head grader

Abstract

The utility model relates to the technical field of graders, in particular to a multi-head grader spindle component, a grading impeller assembly and a multi-head grader. The main shaft component of the multi-head classifier comprises a bearing seat, a bearing and a circulating lubricating system, wherein an oil inlet and an oil outlet are formed in the bearing seat; the bearing is arranged in the bearing seat; and the circulating lubricating system is respectively connected with the oil inlet and the oil outlet. The grading impeller assembly of the multi-head grading machine comprises an impeller and the main shaft component, and the impeller is connected with the right end of the main shaft. The multi-head grader comprises the grading impeller assembly of the multi-head grader. According to the utility model, the circulating lubrication system is added, so that the main shaft component can keep lower temperature at high rotating speed, and the service life is prolonged; the overhaul and maintenance period of the whole main shaft part is prolonged, the rotating speed can be continuously increased on the basis of the existing rotating speed, the equipment can still operate stably, and then the powder selecting precision and efficiency of the classifier are improved.

Description

Technical Field

[0001] This utility model relates to the field of grading machine technology, and in particular to a main shaft component, grading impeller assembly, and multi-head grading machine. Background Technology

[0002] Classifiers are key equipment in the grinding industry, primarily used for particle size classification of powder materials to meet the requirements of particle fineness and uniformity in different applications. Multi-head classifiers are often used in conjunction with vertical mills, ball mills, and other mills to form closed-circuit systems, and are widely used in industries such as non-metallic mineral processing, metal powder processing, cement and building materials, and chemical and new materials for the classification of ultrafine powders.

[0003] Existing horizontal multi-head classifiers lubricate their bearings by adding grease, such as... Figure 1 As shown, Figure 1 The middle arrow points to the grease injection port. As the required rotational speed increases, the bearings overheat significantly, potentially burning out and shortening the maintenance cycle of the spindle components, thus increasing costs. Utility Model Content

[0004] The purpose of this invention is to provide a main shaft component for a multi-head classifier to solve the technical problem that bearings in the prior art are prone to overheating and burning out at high speeds.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A main shaft component for a multi-head classifier includes:

[0007] The bearing housing is a shell structure with an oil inlet and an oil outlet.

[0008] The bearing is disposed within the bearing housing; and

[0009] A circulating lubrication system is provided, wherein the circulating lubrication system is connected to the oil inlet and the oil outlet via pipes, and the circulating lubrication system is used to lubricate the bearing by means of lubricating oil moving from the oil inlet to the oil outlet.

[0010] This invention, by setting up a circulating lubrication system, allows lubricating oil to be delivered from the oil inlet of the bearing housing, lubricate the bearing within the bearing housing, and then discharged from the oil outlet of the bearing housing after lubrication, while carrying away heat. The lubricating oil then returns to the circulating lubrication system for cooling and circulating lubrication.

[0011] Furthermore, the main shaft component of the multi-head classifier also includes a main shaft, which is mounted on the bearing. Both ends of the main shaft extend beyond the bearing housing, with one end used to connect to the impeller and the other end used to connect to the drive system.

[0012] Furthermore, the oil inlet is located on the outer side above the bearing, and the oil outlet is located on the outer side below the bearing. The positional relationship between the oil inlet and outlet should, on the one hand, create a height difference so that the lubricating oil can flow within the bearing housing by its own gravity and fluidity; on the other hand, the distance between them should be as short as possible so that the lubricating oil can quickly carry away heat and return to the circulating lubrication system.

[0013] Furthermore, the aforementioned bearings are provided in several units, distributed at both ends of the bearing housing. More specifically, the smaller model has one bearing on each side; the larger model has two bearings on the right end and one bearing on the left end.

[0014] Furthermore, the oil inlet is located between the bearings at both ends of the bearing housing; an oil outlet is provided on the lower outer side of each bearing to further accelerate the collection of lubricating oil and the flow of lubricating oil.

[0015] Furthermore, the main shaft component of the multi-head classifier also includes two end covers, which are respectively located on the left and right end faces of the bearing housing. One end cover serves to support and position the bearing; the other serves to seal the bearing housing cavity, preventing internal thin oil from leaking out and external dust from entering.

[0016] Furthermore, a non-contact sealing assembly is provided between the end cap and the bearing housing. This sealing assembly is a non-contact threaded structure. Using a non-contact threaded structure for sealing replaces oil-sealed contact seals, eliminating the need for replacement and extending service life.

[0017] Furthermore, the bearing in question is a ball bearing.

[0018] Furthermore, when the bearing balls are located directly below the bearing, the lower edge of the inner side of the oil drain port is neither lower than the center of the balls nor higher than the lower edge of the end cap's inner hole. The advantages of this design are: ① The oil drain port is not lower than the center of the balls: the oil drain port cannot discharge oil below its position, meaning there will always be oil below the center of the balls; when the oil circuit malfunctions during operation and cannot supply oil in time, the oil below the center of the balls will provide corresponding lubrication to the bearing for a certain period, preventing the bearing from dry-running and rapidly damaging itself; this provides a buffer time between the occurrence of a malfunction and the resulting damage. ② The oil drain port is not higher than the lower edge of the end cap's inner hole: oil will preferentially flow out from the oil drain port, reducing the sealing pressure at the end cap's inner hole, and vice versa.

[0019] Furthermore, the circulating lubrication system includes an oil station, an oil inlet pipe, and an oil return pipe; the oil station is equipped with an oil supply pump to deliver lubricating oil from the oil station to the oil inlet; the oil station is equipped with a cooler to forcibly cool the circulating oil and improve the cooling effect of the lubricating oil on the bearings; the oil station is equipped with a heater to appropriately heat the lubricating oil when the ambient temperature is low or during the initial start-up of the equipment, thereby improving the fluidity of the lubricating oil; the oil inlet pipe is equipped with a valve to adjust the flow rate of the lubricating oil as needed; and the oil inlet pipe is equipped with a flow meter to read the real-time flow rate of the lubricating oil.

[0020] The second objective of this utility model is to provide a grading impeller assembly for a multi-head grading machine, including an impeller and the main shaft component, wherein the impeller is connected to the right end of the main shaft and operates under the drive of the main shaft.

[0021] Furthermore, the multi-head classifier's impeller assembly also includes a drive system connected to the left end of the main shaft. The drive system, as the power system for the main shaft component, drives the main shaft to rotate, thereby causing the impeller to rotate and achieving the classification function.

[0022] The third objective of this utility model is to provide a multi-head classifier, including a housing and a classifier impeller assembly, wherein the housing is provided with a plurality of mounting holes for mounting the classifier impeller assembly.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] The main shaft component of this invention incorporates a circulating lubrication system, which enables the main shaft component to maintain a lower temperature at high speeds, thus extending its service life. The maintenance cycle of the entire main shaft component is extended, and the speed can be further increased based on the existing speed, while the equipment can still operate stably, thereby improving the powder selection accuracy and efficiency of the classifier. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of the main shaft component of an existing multi-head classifier;

[0026] Figure 2 This is a schematic diagram of the main shaft component of the multi-head grading machine of this utility model;

[0027] Figure 3 This is a schematic diagram of the bearing structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the end cap of this utility model.

[0029] The labels and names in the diagram are as follows:

[0030] 1-Bearing housing; 1-1-Oil inlet; 1-2-Oil outlet; 2-Circulating lubrication system; 3-Bearing; 4-Main shaft; 4-1-Ball bearing; 5-End cover; 5-1-End cover inner hole; 6-Impeller; 7-Drive system. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0033] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model as appropriate to the specific circumstances.

[0034] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this utility model as appropriate to the specific circumstances.

[0035] In addition, unless otherwise stated, “multiple” or “several” means two or more.

[0036] Example 1

[0037] Please refer to Figure 2 , Figure 2This is a schematic diagram of the main shaft component of a multi-head grading machine according to this embodiment. The main shaft component includes a bearing housing 1, a circulating lubrication system 2, bearings 3, a main shaft 4, and end caps 5. The bearing housing 1 is a shell structure. The bearings 3 include a first bearing and a second bearing, which are respectively located at the left and right ends of the bearing housing 1. The bearings 3 can be ball bearings. The main shaft 4 is mounted on the bearings 3, with both ends extending out of the bearing housing 1. Two end caps 5 are provided, located at the left and right end faces of the bearing housing 1, respectively. The end caps 5 and the bearing housing 1 have a non-contact threaded structure. The bearing housing 1 has an oil inlet 1-1 and an oil outlet 1-2. The oil inlet 1-1 is located on the outer side above the bearing 3, between the first and second bearings. The oil outlet 1-2 is located on the outer side below the bearing 3. More specifically, please refer to... Figure 3-4 When the ball 4-1 of bearing 3 is located directly below bearing 3, the lower edge of the inner side of oil drain port 1-2 is not lower than the center position of ball 4-1 and not higher than the lower edge of the inner hole of end cover 5. Oil drain port 1-2 cannot discharge oil below its position, that is, oil is kept below the center of ball 4-1; when the oil circuit fails during operation and cannot supply oil in time, the oil below the center of ball 4-1 will provide corresponding lubrication to bearing 3 for a certain period of time, preventing bearing 3 from dry friction and rapid damage; thus, a certain buffer time is provided from the occurrence of failure to the damage caused by failure; since oil drain port 1-2 is not higher than the lower edge of the inner hole of end cover 5-1, oil will preferentially flow away from oil drain port 1-2, reducing the sealing pressure at the inner hole of end cover 5-1. The positional relationship between oil inlet port 1-1 and oil drain port 1-2 should, on the one hand, form a height difference so that the lubricating oil can flow in bearing housing 1 by its own gravity and fluidity; on the other hand, the stroke between the two should be as short as possible so that the lubricating oil can quickly carry away heat and return to the circulating lubrication system 2. The circulating lubrication system 2 is connected to the oil inlet 1-1 and the oil outlet 1-2 via an oil inlet pipe and a return pipe, respectively. The circulating lubrication system 2 includes an oil station, an oil inlet pipe, and a return pipe; the oil inlet pipe is connected to the oil inlet 1-1, and the return pipe is connected to the oil outlet 1-2; the oil station is equipped with an oil supply pump to deliver lubricating oil from the oil station to the oil inlet 1-1; the oil station is equipped with a cooler to forcibly cool the circulating oil, improving the cooling effect of the lubricating oil on the bearings; the oil station is equipped with a heater to appropriately heat the lubricating oil when the ambient temperature is low or during the initial start-up of the equipment, improving the fluidity of the lubricating oil; the oil inlet pipe is equipped with a valve to adjust the lubricating oil flow rate as needed; the oil inlet pipe is equipped with a flow meter to read the real-time flow rate of the lubricating oil.

[0038] The working process of this embodiment is as follows:

[0039] The circulating lubrication system 2 pumps lubricating oil into the bearing housing 1 through the oil inlet 1-1. The lubricating oil lubricates the bearing 3 inside the bearing housing 1. After lubricating the bearing 3, the lubricating oil is discharged from the oil outlet 1-2 of the bearing housing 1, while carrying away heat. The lubricating oil returns to the circulating lubrication system 2 for cooling and circulating lubrication.

[0040] Example 2

[0041] A grading impeller assembly for a multi-head grading machine includes a main shaft component as described in Embodiment 1, and further includes an impeller 6 and a drive system 7. The impeller 6 is connected to the right end of the main shaft 4 and can rotate under the drive of the main shaft 4; the impeller 6 performs the grading function. The drive system 7 is connected to the left end of the main shaft 4, and serves as the power system for the main shaft component, driving the main shaft 4 to rotate.

[0042] The working process of this embodiment is as follows:

[0043] The drive system 7 drives the main shaft 4 to rotate, which in turn drives the impeller 6 to rotate, thereby realizing the grading function.

[0044] Example 3

[0045] A multi-head classifier includes multiple classifying impeller assemblies as described in Embodiment 2, and also includes a housing. The housing has mounting positions for multiple classifying impeller assemblies for mounting the classifying impeller assemblies.

[0046] The workflow for this implementation is as follows:

[0047] The drive system 7 drives the main shaft 4 to rotate, which in turn drives the impeller 6 to rotate, realizing the classification function; multiple classification impeller assemblies work synchronously to improve classification efficiency.

[0048] It should be noted that the directional descriptions such as "up," "down," "left," and "right" used in this application are all in the context of... Figure 2 The description is based on the product's location status.

[0049] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A main shaft component of a multi-head classifier, characterized in that, include: The bearing housing (1) is a shell structure with an oil inlet (1-1) and an oil outlet (1-2) on it; Bearing (3), said bearing (3) being disposed within said bearing housing (1); and A circulating lubrication system (2) is connected to the oil inlet (1-1) and the oil outlet (1-2) respectively. The circulating lubrication system (2) is used to lubricate the bearing (3) by allowing lubricating oil to flow from the oil inlet (1-1) to the oil outlet (1-2).

2. The main shaft component of the multi-head classifier as described in claim 1, characterized in that: The main shaft component of the multi-head classifier also includes a main shaft (4), which is mounted on the bearing (3).

3. The main shaft component of the multi-head classifier as described in claim 1, characterized in that: The oil inlet (1-1) is located on the outer side above the bearing (3); the oil outlet (1-2) is located on the outer side below the bearing (3). 。 4. The main shaft component of the multi-head classifier as described in claim 1, characterized in that: The bearing (3) is provided in several units, distributed at the left and right ends of the bearing housing (1).

5. The main shaft component of the multi-head classifier as described in claim 4, characterized in that: The oil inlet (1-1) is located between the bearings (3) at both ends of the bearing housing (1), and an oil outlet (1-2) is provided on the outer side below the bearing (3) at each end.

6. The main shaft component of the multi-head classifier as described in claim 1, characterized in that: The main shaft component of the multi-head classifier also includes an end cover (5), and there are two end covers (5), which are respectively located at the left and right end faces of the bearing seat (1).

7. The main shaft component of the multi-head classifier as described in claim 6, characterized in that: A non-contact sealing assembly is provided between the end cap (5) and the bearing seat (1).

8. A classifying impeller assembly for a multi-head classifier, characterized in that: It includes an impeller (6) and a main shaft component as described in any one of claims 1-7, wherein the impeller (6) is connected to the right end of the main shaft (4).

9. The classifying impeller assembly of the multi-head classifier as described in claim 8, characterized in that: The multi-head classifier's classifying impeller assembly also includes a drive system (7), which is connected to the left end of the main shaft (4).

10. A multi-head grading machine, characterized in that: Includes the staged impeller assembly as described in any one of claims 8-9.

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