Precise positioning device for centrifugal machine bearing

Abstract

The invention provides an accurate positioning device for a centrifugal machine bearing, and belongs to the technical field of material separation equipment. The device comprises bearing seats at the two ends of a rotary drum, steel bearing positioning assemblies capable of replacing bearings are installed in the bearing seats, and each bearing positioning assembly comprises a first positioning sleeve and a second positioning sleeve; the inner surface of the first positioning sleeve is provided with a cylindrical surface with the same inner diameter as the bearing, and the outer surface of the first positioning sleeve is provided with a first conical surface; the inner surface of the second positioning sleeve is provided with a second conical surface matched with the first conical surface, and the outer surface of the second positioning sleeve is provided with a cylindrical surface with the same outer diameter as the bearing. The bearing is replaced by the steel bearing positioning assembly, the steel bearing positioning assembly is installed in the bearing seat, measurement and positioning are carried out in a clearance-free state, personal errors are reduced, precise positioning of the bearing is achieved, the working efficiency is greatly improved, and the steel bearing positioning assembly can be repeatedly used and is simple in structure, convenient to operate and low in cost.

Description

Technical Field

[0001] The invention relates to the technical field of material separation equipment, and in particular to a centrifuge bearing precision positioning device. Background Art

[0002] The mud centrifuge mainly achieves solid-liquid separation by achieving a certain centrifugal force at a rotating speed. The separated particle size is small particles that are difficult to separate. When under the action of centrifugal force that is hundreds or even thousands of times greater than gravity, an annular liquid pool is formed in the drum. Due to the density difference between the solid phase and the liquid phase, the heavier solid phase particles settle to the inner wall of the drum to form sediment. Under the relative movement of the spiral blades and the drum, the sediment is pushed to the small end of the drum by the spiral propeller and discharged from the slag discharge port, and the clarified liquid phase in the inner ring is discharged through the spiral channel and the overflow hole, thereby realizing the production process of continuous solid-liquid separation.

[0003] As we all know, the two ends of the centrifuge bowl are installed on the bearing seat through bearings, and the bearing seat is installed directly at the center of the platform seat. After the bearing is installed on the bearing seat, the clearance of the bearing itself makes the bearing seat have a certain amount of activity margin when positioning. At the same time, the span of the bearings at both ends is large. Therefore, during the bearing positioning process, it is necessary to repeatedly measure the verticality, coaxiality and other parameters of the bearing seat for fine-tuning, which is time-consuming and labor-intensive. Its accuracy is achieved by the personal experience of the operator. It is impossible to accurately guarantee the precise positioning of the bearings at both ends of the bowl, so that the bearings at both ends of the drum that are not coaxially fixed will vibrate violently during the adjustment operation, aggravating the wear between the bearing and the bearing seat, causing the bearing to heat up, and even the bearing "stuck", causing the equipment to be scrapped. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a centrifuge bearing precise positioning device, which replaces the bearing with a steel bearing positioning assembly, is installed inside the bearing seat, and performs measurement and positioning in a clearance-free state, thereby reducing human errors, achieving precise positioning of the bearing, and greatly improving work efficiency. The steel bearing positioning assembly can also be reused, has a simple structure, is easy to operate, and is low in cost.

[0005] To achieve the above object, the present invention adopts the following technical solution: a centrifuge bearing precision positioning device, comprising bearing seats at both ends of a rotating drum, a steel bearing positioning assembly with a replaceable bearing installed in the bearing seat, and the bearing positioning assembly comprising a first positioning sleeve and a second positioning sleeve; The first positioning sleeve is provided with an adjustment notch for easy disassembly and assembly, the inner surface of the first positioning sleeve is provided with a cylindrical surface with the same inner diameter as the bearing, and the outer surface of the first positioning sleeve is provided with a first conical surface; The inner surface of the second positioning sleeve is provided with a second conical surface matched with the first conical surface, and the outer surface of the second positioning sleeve is provided with a cylindrical surface with the same outer diameter as the bearing.

[0006] As an improvement of the present invention, it also includes a drum replacement assembly, wherein the shaft replacement assembly includes a cylinder and drum positioning shafts at both ends of the cylinder; The first positioning sleeve comprises an integrally formed flange section I and a connecting section I, the outer surface of the connecting section I is a conical surface, and a disassembly hole is provided on the flange section I along the circumferential direction; The second positioning sleeve is an expansion sleeve, the outer surface of which is a cylindrical surface with the same outer diameter as the bearing, and the inner surface of which is a conical surface adapted to the outer surface of the connecting section I; The flange section I is arranged on the outside of the bearing end cover I, and a clamping nut is arranged on the drum positioning shaft outside the flange section I. By tightening the clamping nut, the first positioning sleeve hugs the drum positioning shaft and pushes the second positioning sleeve to the shaft shoulder position.

[0007] As an improvement of the present invention, the outer surface of the drum replacement assembly is an integrally processed structure.

[0008] As an improvement of the present invention, the second positioning sleeve is a cylindrical structure, and an adjustment notch penetrating through the second positioning sleeve is provided on the side wall of the cylindrical structure.

[0009] As an improvement of the present invention, the first positioning sleeve includes a flange section II and a connecting section II, the outer surface of the connecting section II is a conical surface, and a first bolt hole is opened on the flange section II along the circumferential direction; The second positioning sleeve comprises a flange section III and a connecting section III, a threaded connecting hole is provided on the flange section III along the circumferential direction, the outer surface of the connecting section III is a cylindrical surface with the same outer diameter as the bearing, and the inner surface thereof is a stepped hole adapted to the first positioning sleeve, and a second bolt hole corresponding to the first bolt hole is provided at the sudden change of the hole diameter; Bolts are passed through the first bolt hole and the second bolt hole and tightened, so that the first positioning sleeve tightly embraces the rotating shaft of the drum and pushes the second positioning sleeve to the shaft shoulder position.

[0010] As an improvement of the present invention, the flange section II and the connecting section II as well as the flange section III and the connecting section III are all integrally formed structures.

[0011] The beneficial effects of the present invention are: a centrifuge bearing precision positioning device, which replaces the bearing with a steel bearing positioning component and is installed inside the bearing seat. Since the steel bearing positioning component is a rigid structure, it does not have the rolling elements or gaps of traditional bearings and directly forms a "hard contact" with the bearing seat, eliminating the positioning deviation caused by the bearing's own clearance, and can accurately locate the position of the bearing seat mounting hole, reducing human errors, achieving precise positioning of the bearing, and greatly improving work efficiency. The steel bearing positioning component can also be reused, has a simple structure, is easy to operate, and has low manufacturing and maintenance costs.

[0012] Furthermore, it further includes a drum replacement component. The rotating shaft replacement component includes a cylinder body and drum positioning shafts at both ends of the cylinder body. The first positioning sleeve includes a flange section I and a connecting section I formed integrally. The outer surface of the connecting section I is a conical surface, and disassembly holes are provided in the flange section I along the circumferential direction. The second positioning sleeve is an expansion sleeve, whose outer surface is a cylindrical surface with the same outer diameter as the bearing, and its inner surface is a conical surface adapted to the outer surface of the connecting section I. The flange section I is arranged on the outside of the bearing end cover I, and a compression nut is provided on the drum positioning shaft outside the flange section I. By tightening the compression nut, the first positioning sleeve holds the drum positioning shaft tightly and pushes the second positioning sleeve to the shoulder position, thereby achieving precise positioning in the left and right positions. Through the above design, by tightening the compression nut, the second positioning sleeve expands outward under the action of being pushed inward by the first positioning sleeve and fits tightly with the inner wall of the bearing seat, further fixing the position of the steel bearing positioning component, ensuring no gap, and accurately positioning the position of the bearing seat mounting hole. By using the rotating shaft replacement component to replace the drum, when the drum is in the state of waiting for materials, the rotating shaft replacement component can be used to replace the drum to position the bearing seat in advance. After the drum enters the factory, it can be directly installed, improving the installation efficiency. At the same time, the rotating shaft replacement component can be reused, with a simple structure and convenient processing.

[0013] Furthermore, the outer surface of the drum replacement component is an integrally processed structure. It has a simple structure and convenient processing, can ensure the coaxiality between the cylinder body and the drum positioning shafts at both ends of the cylinder body, and further improves the positioning accuracy of the bearing seat.

[0014] Furthermore, the second positioning sleeve is of a cylindrical structure, and an adjustment notch penetrating the second positioning sleeve is provided on its side wall. It has a simple structure and is convenient for disassembly, assembly and processing.

[0015] The first positioning sleeve includes a flange section II and a connecting section II. The outer surface of the connecting section II is a conical surface, and first bolt holes are provided in the flange section II along the circumferential direction. The second positioning sleeve includes a flange section III and a connecting section III. Threaded connection holes are provided in the flange section III along the circumferential direction. The outer surface of the connecting section III is a cylindrical surface with the same outer diameter as the bearing, and its inner surface is a stepped hole adapted to the first positioning sleeve. A second bolt hole corresponding to the first bolt hole is provided at the position where the hole diameter changes. By passing bolts through the first bolt hole and the second bolt hole and tightening them, the first positioning sleeve holds the drum rotating shaft tightly and pushes the second positioning sleeve to the shoulder position, thereby achieving precise positioning in the left and right positions. Through the above design, the connecting section III of the second positioning sleeve replaces the specific position of the outer ring of the bearing and is installed on the bearing seat. The flange section III replaces one side of the bearing end cover. Since the second positioning sleeve is provided with an adjustment notch, tightening the bolts can make the first positioning sleeve hold the drum rotating shaft tightly and push the second positioning sleeve to the shoulder position. Under the combined action of it and the conical surface, the first positioning sleeve, the second positioning sleeve, the drum rotating shaft and the bearing seat are concentric, with a simple structure and convenient operation.

[0016] Furthermore, the flange section II and the connecting section II, as well as the flange section III and the connecting section III, are all integrally formed structures. Through the integral structure, the coaxiality of the flange section II and the connecting section II, as well as the flange section III and the connecting section III, is ensured, and the processing and manufacturing are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram when the first positioning sleeve and the second positioning sleeve of the second embodiment of the present invention are installed on the rotating shaft replacement assembly; Figure 2 For Figure 1 the layout structural diagram; Figure 3 It is a schematic structural diagram of the first positioning sleeve of the first embodiment of the present invention; Figure 4 It is a schematic structural diagram of the second positioning sleeve of the first embodiment of the present invention; Figure 5 It is a schematic structural diagram of the second embodiment of the present invention; Figure 6 It is a schematic structural diagram of the first positioning sleeve and the second positioning sleeve of the second embodiment of the present invention; Figure 7 It is a schematic structural diagram when the drum of the second embodiment of the present invention is installed on the platform seat through the bearing seats at both ends.

[0018] In the figure: 1. Bearing seat; 2. Drum positioning shaft; 3. Cylinder body; 4. First positioning sleeve; 41. Flange section I; 42. Connecting section I; 43. Adjusting notch I; 5. Second positioning sleeve; 51. Second positioning sleeve body; 52. Adjusting notch II; 6. Bearing end cover II; 7. Bearing end cover I; 8. Locking nut; 9. Drum; 10. Rotating shaft; 11. Bearing end cover I; 12. First positioning sleeve; 121. Flange section II; 122. Connecting section II; 123. Adjusting notch II; 13. Second positioning sleeve; 131. Flange section III; 132. Connecting section III; 14. Platform seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0020] It should be noted that the orientation terms such as inside, outside, left, and right in the embodiments of the present invention are only relative concepts to each other or are referenced based on the normal use state of the product, and should not be considered restrictive. Embodiment

[0021] As Figures 1 to 4 shown, a precise positioning device for centrifuge bearings includes bearing seats 1 at both ends of a drum 1 and a rotating shaft replacement assembly. The rotating shaft replacement assembly includes a cylinder body 3 and drum positioning shafts 2 at both ends of the cylinder body 3. The bearing seats 1 are installed on the drum positioning shafts 2. Preferably, the drum positioning shafts 2 are first welded to both ends of the cylinder body 3, and then the outer surface of the rotating shaft replacement assembly is formed in one cut by a lathe, so that the outer surface of the drum replacement assembly is an integrally processed structure, which is simple in structure and convenient for processing, and can ensure the coaxiality between the cylinder body and the drum positioning shafts at both ends of the cylinder body, further improving the positioning accuracy of the bearing seats. A steel bearing positioning assembly for replaceable bearings is installed in the bearing seats 1. The bearing positioning assembly includes a first positioning sleeve 4 and a second positioning sleeve 5; an adjustment notch for easy disassembly and assembly is provided on the first positioning sleeve 4, a cylindrical surface with the same inner diameter as the bearing is provided on its inner surface, and a first conical surface is provided on its outer surface; a second conical surface adapted to the above-mentioned first conical surface is provided on the inner surface of the second positioning sleeve 5, and a cylindrical surface with the same outer diameter as the bearing is provided on its outer surface.

[0022] The first positioning sleeve 4 includes a flange section Ⅰ 41 and a connecting section Ⅰ 42. The outer surface of the connecting section Ⅰ 42 is a conical surface. Disassembly holes are provided on the flange section Ⅰ 41 along the circumferential direction; at least one adjustment notch Ⅰ 43 is provided on the side wall of the connecting section Ⅰ 42, which is two in this embodiment, and the adjustment notch Ⅰ 43 extends axially to the connection with the flange section Ⅰ 41. The second positioning sleeve 5 is an expansion sleeve, its outer surface is a cylindrical surface with the same outer diameter as the bearing, and its inner surface is a conical surface adapted to the outer surface of the connecting section Ⅰ 42; preferably, the second positioning sleeve is of a cylindrical structure, and a bearing adjustment notch Ⅱ 52 penetrating the second positioning sleeve is provided on the side wall of the main body 51 of the second positioning sleeve. The flange section Ⅰ 41 is arranged outside the bearing end cover Ⅰ 7, and a compression nut 8 is provided on the drum positioning shaft 2 outside the flange section Ⅰ 41, and a threaded section adapted to the compression nut 8 is provided on the drum positioning shaft 2. By tightening the compression nut 8, the first positioning sleeve 4 is tightened around the drum positioning shaft 2 and the second positioning sleeve 5 is pushed to the shoulder position. The flange section Ⅰ 41 and the connecting section Ⅰ 42 are of an integrally formed structure.

[0023] The working principle of this embodiment is as follows: Install the bearing positioning component in the bearing housing 1, tighten the compression nut 8, so that the first positioning sleeve 4 holds the drum rotating shaft 2 tightly and pushes the second positioning sleeve 5 to the shoulder position. At the same time, under the action of the first positioning sleeve 4 pushing inward, the second positioning sleeve 5 expands outward and fits tightly with the inner wall of the bearing housing 1, further fixing the position of the steel bearing positioning component to ensure no clearance. Since there is no clearance between the bearing positioning component and the bearing housing 1, it is not necessary to repeatedly measure the perpendicularity and coaxiality of the bearing housing 1 to accurately position the installation hole of the bearing housing, and the bearing housing 1 can be accurately installed on the platform seat 14. After the bearing housing 1 is fixedly installed on the platform seat 14, after removing the steel bearing positioning component, install the bearing in the bearing housing 1, and the accurate positioning of the bearing can be achieved. It should be noted that when disassembling, pass the bolt through the disassembly hole on the flange section I 41 so that the bolt abuts against the left end face of the bearing end cover I 7. Under the action of the bearing end cover I 7, turning the bolt can disassemble the first positioning sleeve 4 that fits tightly with the second positioning sleeve 5.

[0024] Replace the drum 9 with a rotating shaft replacement component. When the drum 9 is in the waiting material state, the rotating shaft replacement component can be used to replace the drum 9 to position the bearing housing 1 in advance. After the drum 9 enters the factory, it can be directly installed, improving the installation efficiency. At the same time, the rotating shaft replacement component can be reused, with a simple structure and convenient processing. Embodiment

[0025] The difference between this embodiment and the first embodiment is that the structure of the bearing positioning component is different, and the accurate positioning of the bearing housing 1 is achieved through the drum 9. The following is a specific description of this embodiment: As Figures 5 to 7 shown, a centrifuge bearing accurate positioning device includes bearing housings 1 at both ends of the drum 9. A steel bearing positioning component capable of replacing the bearing is installed in the bearing housing 1. The bearing positioning component includes a first positioning sleeve 12 and a second positioning sleeve 13; an adjustment notch for making the bearing housing 1 concentric with the drum rotating shaft 10 is provided on the first positioning sleeve 12. Its inner surface is provided with a cylindrical surface having the same diameter as the inner diameter of the bearing, and its outer surface is provided with a first conical surface; the inner surface of the second positioning sleeve 13 is provided with a second conical surface adapted to the above first conical surface, and its outer surface is provided with a cylindrical surface having the same diameter as the outer diameter of the bearing.

[0026] The first positioning sleeve 12 includes a flange section II 121 and a connecting section II 122. The outer surface of the connecting section II 122 is a conical surface. The first bolt holes are arranged on the flange section II 121 along the circumferential direction. Among them, adjusting notches II 123 are arranged on both the left and right sides of the first positioning sleeve 12 in a staggered manner, making it a expansion sleeve structure. By means of the adjusting notches II 123, it is ensured that the centers of the first positioning sleeve 12, the second positioning sleeve 13, the drum rotating shaft 10 and the bearing housing 1 are on the same axis. The second positioning sleeve 13 includes a flange section III 131 and a connecting section III 132. Threaded connection holes are arranged on the flange section III 131 along the circumferential direction. The second positioning sleeve 13 is installed on the bearing housing 1 through the threaded connection holes by bolts, and at the same time, it also serves as a substitute for one side of the bearing end cover. In this embodiment, it substitutes the left bearing end cover II 6, while the right bearing end cover I 7 is installed at the position of the bearing housing 1 without change. The outer surface of the connecting section III 132 is a cylindrical surface with the same diameter as the bearing outer diameter, and its inner surface is a stepped hole adapted to the first positioning sleeve 12. Second bolt holes corresponding to the above-mentioned first bolt holes are arranged at the aperture mutation. During the actual installation process, the bolts are sequentially passed through the first bolt holes on the flange section III 132 and the second bolt holes on the connecting section III 132. By passing the bolts through the above-mentioned first bolt holes and second bolt holes and tightening them, the first positioning sleeve 12 is tightened around the drum rotating shaft 10 and the second positioning sleeve 13 is pushed to the shoulder position. Preferably, both the flange section II 121 and the connecting section II 122, and the flange section III 131 and the connecting section III 132 are integrally formed structures. Through the integral structure, the coaxiality of the flange section II 121 and the connecting section II 122, and the flange section III 131 and the connecting section III 132 is ensured, and the processing and manufacturing are convenient.

[0027] The working principle of this embodiment is as follows: Install the bearing positioning assembly in the bearing housing, tighten the bolts, so that the first positioning sleeve 12 is tightened around the drum rotating shaft 10 and the second positioning sleeve 13 is pushed to the shoulder position. Since there is no gap between the bearing positioning assembly and the bearing housing 1, it is not necessary to repeatedly measure the perpendicularity and coaxiality of the bearing housing 1 to accurately locate the position of the bearing housing installation hole, and the bearing housing 1 can be accurately installed on the platform seat 14. After the bearing housing 1 is fixedly installed on the platform seat 14, after removing the steel bearing positioning assembly, install the bearing in the bearing housing 1, and the accurate positioning of the actual bearing can be achieved.

[0028] The above has introduced in detail a centrifuge bearing precise positioning device provided by the present invention. Specific examples are used in this article to elaborate on the structural principle and implementation manner of the present invention. The above embodiments are only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A centrifuge bearing precision positioning device, comprising bearing seats at both ends of a rotating drum, characterized in that: A steel bearing positioning assembly with a replaceable bearing is installed in the bearing seat, and the bearing positioning assembly includes a first positioning sleeve and a second positioning sleeve; The first positioning sleeve is provided with an adjustment notch for easy disassembly and assembly, the inner surface of the first positioning sleeve is provided with a cylindrical surface with the same inner diameter as the bearing, and the outer surface of the first positioning sleeve is provided with a first conical surface; The inner surface of the second positioning sleeve is provided with a second conical surface matched with the first conical surface, and the outer surface of the second positioning sleeve is provided with a cylindrical surface with the same outer diameter as the bearing.

2. A centrifuge bearing precise positioning device according to claim 1, characterized in that: It also includes a drum replacement assembly, wherein the shaft replacement assembly includes a cylinder and drum positioning shafts at both ends of the cylinder; The first positioning sleeve comprises an integrally formed flange section I and a connecting section I, the outer surface of the connecting section I is a conical surface, and a disassembly hole is provided on the flange section I along the circumferential direction; The second positioning sleeve is an expansion sleeve, the outer surface of which is a cylindrical surface with the same outer diameter as the bearing, and the inner surface of which is a conical surface adapted to the outer surface of the connecting section I; The flange section I is arranged on the outside of the bearing end cover I, and a clamping nut is arranged on the drum positioning shaft outside the flange section I. By tightening the clamping nut, the first positioning sleeve hugs the drum positioning shaft and pushes the second positioning sleeve to the shaft shoulder position.

3. A centrifuge bearing precise positioning device according to claim 2, characterized in that: The outer surface of the drum replacement assembly is an integrally processed structure.

4. The centrifuge bearing precise positioning device according to claim 2, characterized in that: The second positioning sleeve is a cylindrical structure, and a side wall thereof is provided with an adjustment notch penetrating through the second positioning sleeve.

5. The centrifuge bearing precise positioning device according to claim 1, characterized in that: The first positioning sleeve comprises a flange section II and a connecting section II, the outer surface of the connecting section II is a conical surface, and a first bolt hole is opened on the flange section II along the circumferential direction; The second positioning sleeve comprises a flange section III and a connecting section III, a threaded connecting hole is provided on the flange section III along the circumferential direction, the outer surface of the connecting section III is a cylindrical surface with the same outer diameter as the bearing, and the inner surface thereof is a stepped hole adapted to the first positioning sleeve, and a second bolt hole corresponding to the first bolt hole is provided at the sudden change of the hole diameter; Bolts are passed through the first bolt hole and the second bolt hole and tightened, so that the first positioning sleeve tightly embraces the rotating shaft of the drum and pushes the second positioning sleeve to the shaft shoulder position.

6. A centrifuge bearing precise positioning device according to claim 5, characterized in that: The flange section II and the connecting section II as well as the flange section III and the connecting section III are all integrally formed structures.

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