Mounting structure of main transmission shaft and rotary drum in centrifugal machine
By adopting an installation structure that combines the annular seat and the expansion sleeve in the centrifuge, the problem of easy loosening of the traditional connection method is solved, stable connection and simplified disassembly and assembly are achieved, and the operation stability and maintenance efficiency of the equipment are improved.
Patent Information
- Application Number
- CN202421664807.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-15
AI Technical Summary
In traditional centrifuges, the flat key connection between the main drive shaft and the drum is easily loosened, resulting in unstable operation of the drum, affecting the separation effect, and inconvenient disassembly.
The installation structure is adopted that combines the annular seat and the expansion sleeve. Through the design of the expansion sleeve body and the annular installation side, the tapered surface and threaded hole of the annular seat are combined with the expansion and tightening bolts, and the main transmission shaft and the drum base are firmly locked with the expansion and tightening bolts.
The stable connection between the main drive shaft and the drum is achieved, avoiding loosening, simplifying the disassembly and assembly process, improving maintenance efficiency, and enhancing sealing.
Smart Images
Figure CN222998960U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a centrifuge, in particular to an installation structure of a main transmission shaft and a drum in a centrifuge. Background Art
[0002] At present, in traditional centrifuges, the main transmission shaft and the drum are connected by flat keys. As is well known, this connection method is prone to loosening during actual use, resulting in unstable operation of the drum and affecting the separation effect of the centrifuge; moreover, the disassembly and assembly of the main transmission shaft and the drum are not convenient. Summary of the Utility Model
[0003] The first technical problem to be solved by the utility model is to provide an installation structure of a main transmission shaft and a drum in a centrifuge that will not loosen and is convenient for disassembly and assembly.
[0004] To solve the above first technical problem, the technical solution adopted by the utility model is: an installation structure of a main transmission shaft and a drum in a centrifuge, comprising: a main transmission shaft, a drum, a expansion sleeve, and a expansion-relying annular seat that cooperates with the expansion sleeve; the expansion sleeve includes: a expansion sleeve body, and an annular installation edge provided at the outer end of the expansion sleeve body, at least two installation through holes are circumferentially provided on the annular installation edge, and the outer wall of the expansion sleeve body is a conical surface with a larger diameter at one end close to the annular installation edge and a smaller diameter at the other end; on the end surface of the expansion-relying annular seat, installation threaded holes corresponding to the installation through holes on the annular installation edge are circumferentially provided, and a conical surface that cooperates with the conical surface on the outer wall of the expansion sleeve body is provided on the inner wall of the expansion-relying annular seat; the drum includes: a drum barrel and a drum bottom provided at the bottom of the drum barrel, the drum bottom includes: a drum base connected to the drum barrel, a stepped central installation through hole is provided at the center of the drum base, the inner section of the central installation through hole has a smaller diameter and cooperates with the main transmission shaft, and the outer section of the central installation through hole has a larger diameter and cooperates with the expansion-relying annular seat; the main transmission shaft is inserted into the central installation through hole, the expansion-relying annular seat is arranged in the outer section of the central installation through hole, the expansion sleeve body of the expansion sleeve is sleeved on the main transmission shaft and in the expansion-relying annular seat, a tightening bolt is selected to pass through the installation through hole on the annular installation edge and be screwed into the corresponding installation threaded hole on the expansion-relying annular seat to tightly fasten the main transmission shaft and the expansion sleeve body together; a cover plate is hermetically arranged on the drum base facing the central installation through hole, a connecting bolt is hermetically inserted into the cover plate, and an installation threaded hole corresponding to the connecting bolt is provided on the end surface of the corresponding end of the main transmission shaft, and the connecting bolt is screwed into the installation threaded hole on the main transmission shaft.
[0005] As a preferred solution, in the installation structure of the main drive shaft and the drum in the centrifuge, the specific installation method of the expanding and relying annular seat is as follows: at least two installation through holes are circumferentially formed on the end face of the expanding and relying annular seat, and installation threaded holes corresponding to the installation through holes on the expanding and relying annular seat are formed on the bottom wall of the outer section of the central installation through hole. A fixing bolt is selected to pass through the installation through hole on the end face of the expanding and relying annular seat and is screwed into the corresponding installation threaded hole on the bottom wall of the outer section of the central installation through hole.
[0006] As a preferred solution, in the installation structure of the main drive shaft and the drum in the centrifuge, the installation through holes on the end face of the expanding and relying annular seat are evenly arranged circumferentially.
[0007] As a preferred solution, in the installation structure of the main drive shaft and the drum in the centrifuge, the installation through holes on the annular installation edge are evenly arranged circumferentially.
[0008] As a preferred solution, in the installation structure of the main drive shaft and the drum in the centrifuge, a sealing ring is arranged between the drum base and the cover plate.
[0009] As a preferred solution, in the installation structure of the main drive shaft and the drum in the centrifuge, an annular sealing groove matched with the sealing ring is formed on the back surface of the cover plate, and the sealing ring is arranged in the annular sealing groove on the back surface of the cover plate.
[0010] As a preferred solution, in the installation structure of the main drive shaft and the drum in the centrifuge, the installation method of the connecting bolt and the cover plate is as follows: an installation through hole matched with the connecting bolt is formed in the cover plate, a spring washer and a sealing ring are sleeved on the connecting bolt, the sealing ring is arranged in the installation through hole on the cover plate, and the spring washer presses against the cover plate.
[0011] The beneficial effects of the present utility model are as follows:
[0012] 1. By adopting the cooperation of the expanding and relying annular seat and the expansion sleeve, the present utility model can very conveniently lock the main drive shaft and the drum base firmly together, and it will not loosen during actual use; moreover, during disassembly and assembly, only the tightening bolt needs to be installed or removed, making the future maintenance disassembly and assembly very convenient.
[0013] 2. By setting the drum bottom into a split structure of the drum base and the cover plate, the present utility model greatly facilitates the installation of the expanding and relying annular seat and the expansion sleeve, and improves the disassembly and assembly efficiency.
[0014] 3. By forming an annular sealing groove matched with the sealing ring on the back surface of the cover plate, the present utility model enables the sealing ring to be reliably constrained in the annular sealing groove on the back surface of the cover plate, thus making the seal between the cover plate and the drum base more reliable. Description of the Drawings
[0015] Figure 1 It is a schematic structural view of the installation structure of the main transmission shaft and the drum described in the present utility model.
[0016] Figure 2 is Figure 1 an enlarged structural view of part A in
[0017] Figures 1 to 2 The reference numerals in are respectively: 1, main transmission shaft; 3, expansion-reliance annular seat; 310, installation threaded hole; 311, conical surface; 4, expansion sleeve; 40, annular installation edge; 41, expansion sleeve body; 411, conical surface; 6, tightening bolt; 7, drum base; 70, cover plate; 71, central installation through hole; 711, installation threaded hole; 8, connecting bolt; 81, spring washer. Specific embodiments
[0018] The following combines the accompanying drawings to describe in detail the specific implementation scheme of the installation structure of the main transmission shaft and the drum in a centrifuge described in the present utility model.
[0019] As Figure 1 shown, the installation structure of the main transmission shaft and the drum in the centrifuge described in the present utility model includes: a main transmission shaft 1, a drum, an expansion sleeve 4, and an expansion-reliance annular seat 3 that cooperates with the expansion sleeve 4; the expansion sleeve 4 includes: an expansion sleeve body 41 and an annular installation edge 40 provided at the outer end of the expansion sleeve body 41, and at least two installation through holes are evenly arranged along the circumferential direction on the annular installation edge 40, as Figure 2As shown in the figure, the outer wall of the expansion sleeve body 41 is a conical surface 411 with a larger diameter at one end close to the annular mounting edge 40 and a smaller diameter at the other end; on the end face of the expansion ring seat 3, mounting threaded holes 310 corresponding to the mounting through holes on the annular mounting edge 40 are circumferentially formed, and a conical surface 311 matching the conical surface 411 on the outer wall of the expansion sleeve body 41 is provided on the inner wall of the expansion ring seat 3; the drum includes: a drum barrel and a drum bottom provided at the bottom of the drum barrel (which belongs to the conventional technology in the art and will not be described in detail here), and the drum bottom includes: a drum base 7 connected to the drum barrel, and a stepped central mounting through hole 71 is formed at the center of the drum base 7. The inner diameter of the inner section of the central mounting through hole 71 is smaller and matches the main transmission shaft 1, and the outer diameter of the outer section of the central mounting through hole 71 is larger and matches the expansion ring seat 3; the main transmission shaft 1 is inserted into the central mounting through hole 71, and the expansion ring seat 3 is arranged in the outer section of the central mounting through hole 71. The specific installation method is: at least two mounting through holes are circumferentially and evenly formed on the end face of the expansion ring seat 3, and mounting threaded holes 711 corresponding to the mounting through holes on the expansion ring seat 3 are formed on the bottom wall of the outer section of the central mounting through hole 71. Fixing bolts are selected to pass through the mounting through holes on the end face of the expansion ring seat 3 and be screwed into the corresponding mounting threaded holes 711 on the bottom wall of the outer section of the central mounting through hole 71 (which belongs to the conventional technology in the art and will not be described in detail here); the expansion sleeve body 41 of the expansion sleeve 4 is sleeved on the main transmission shaft 1 and in the expansion ring seat 3. Tightening bolts 6 are selected to pass through the mounting through holes on the annular mounting edge 40 and be screwed into the corresponding mounting threaded holes on the expansion ring seat 3, so that the main transmission shaft 1 and the expansion sleeve body 41 are tightened together; a cover plate 70 is provided on the drum base 7 opposite to the central mounting through hole 71. An annular sealing groove matching the drum base 7 is formed on the back surface of the cover plate 70, and a sealing ring is provided in the annular sealing groove on the back surface of the cover plate 70 (which belongs to the conventional technology in the art and will not be described in detail here); a connecting bolt 8 passes through the cover plate 70. Mounting threaded holes corresponding to the connecting bolt 8 are formed on the end face of the corresponding end ( Figure 1 the right end in) of the main transmission shaft 1. The connecting bolt 8 is sleeved with a spring washer 81 and a sealing ring and is screwed into the mounting threaded hole on the main transmission shaft 1 (wherein, the sealing ring is arranged in the mounting through hole on the cover plate 70, and the spring washer 81 abuts against the cover plate 70).
[0020] In summary, it is only the preferred embodiment of the present invention and is not used to limit the scope of implementation of the present invention. All equivalent changes and modifications made to the shape, structure, features and spirit described in the scope of the claims of the present invention should be included in the scope of the claims of the present invention.
Claims
1. A mounting structure for a main transmission shaft and a drum in a centrifuge, comprising: The main transmission shaft and the drum are characterized in that the installation structure of the main transmission shaft and the drum in the centrifuge also includes: an expansion sleeve and an expansion annular seat matching with the expansion sleeve; the expansion sleeve includes: an expansion sleeve body and an annular mounting edge arranged at the outer end of the expansion sleeve body, at least two mounting through holes are opened on the annular mounting edge along the circumferential direction, and the outer wall of the expansion sleeve body is a conical surface with a large diameter at one end close to the annular mounting edge and a small diameter at the other end; mounting threaded holes corresponding to the mounting through holes on the annular mounting edge are opened on the end surface of the expansion annular seat along the circumferential direction, and a conical surface matching with the conical surface on the outer wall of the expansion sleeve body is arranged on the inner wall of the expansion annular seat; the drum includes: a rotating drum, and a drum bottom arranged at the bottom of the rotating drum, the drum bottom includes: a drum base connected to the rotating drum, and the drum base has a stepped center mounting hole at its center. The central mounting through hole has an inner section with a smaller diameter, which matches the main transmission shaft, while the outer section with a larger diameter, which matches the expansion annular seat; the main transmission shaft is passed through the central mounting through hole, and the expansion annular seat is arranged in the outer section of the central mounting through hole; the expansion sleeve body of the expansion sleeve is sleeved on the main transmission shaft and in the expansion annular seat; the expansion bolts are selected to pass through the mounting through holes on the annular mounting edge and are screwed into the corresponding mounting threaded holes on the expansion annular seat, so that the main transmission shaft and the expansion sleeve body are expanded together; a cover plate is provided on the drum base facing the central mounting through hole, and a connecting bolt is sealed and penetrated in the cover plate; a mounting threaded hole corresponding to the connecting bolt is opened on the end face of the corresponding end of the main transmission shaft, and the connecting bolt is screwed into the mounting threaded hole on the main transmission shaft.
2. The installation structure of the main transmission shaft and the drum in a centrifuge according to claim 1, characterized in that: The specific installation method of the expansion ring seat is as follows: at least two mounting through holes are opened on the end face of the expansion ring seat along the circumferential direction, and a mounting threaded hole corresponding to the mounting through hole on the expansion ring seat is opened on the bottom wall of the outer section of the central mounting through hole, and a fixing bolt is selected to pass through the mounting through hole on the end face of the expansion ring seat and screwed into the corresponding mounting threaded hole on the bottom wall of the outer section of the central mounting through hole.
3. The installation structure of the main transmission shaft and the drum in a centrifuge according to claim 2, characterized in that: The mounting through holes on the end surface of the expansion annular seat are evenly arranged along the circumferential direction.
4. The installation structure of the main transmission shaft and the drum in a centrifuge according to claim 1, characterized in that: The mounting through holes on the annular mounting edge are evenly arranged along the circumferential direction.
5. The installation structure of the main transmission shaft and the drum in a centrifuge according to claim 1, characterized in that: A sealing ring is arranged between the drum base and the cover plate.
6. The installation structure of the main transmission shaft and the drum in a centrifuge according to claim 5, characterized in that: An annular sealing groove matched with the sealing ring is provided on the back side of the cover plate, and the sealing ring is arranged in the annular sealing groove on the back side of the cover plate.
7. The installation structure of the main transmission shaft and the drum in a centrifuge according to any one of claims 1 to 6, characterized in that: The installation method of the connecting bolts and the cover plate is as follows: a mounting through hole matching the connecting bolts is opened in the cover plate, a spring washer and a sealing ring are sleeved on the connecting bolts, the sealing ring is arranged in the mounting through hole on the cover plate, and the spring washer is pressed against the cover plate.