Direct connection transmission mechanism of taper sleeve type diaphragm compressor
By designing a direct-drive mechanism for a cone-sleeve diaphragm compressor, quick installation and disassembly are achieved using cone-sleeve locking bolts and flywheel disassembly bolts. This solves the problem of difficult quick installation and maintenance of flywheel drive mechanisms in existing technologies, and improves the maintainability and maintenance efficiency of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-19
- Publication Date
- 2026-03-24
AI Technical Summary
The existing flywheel drive mechanism is cumbersome to install and disassemble in diaphragm compressors, making it difficult to replace and repair quickly, which affects equipment efficiency and lifespan.
The direct-drive mechanism of the tapered diaphragm compressor is adopted. By setting a first tapered sleeve locking bolt between the half coupling and the shaft connecting tapered sleeve, and combining it with a disassembly bolt on the flywheel, quick installation and disassembly can be achieved, simplifying the maintenance process.
It improves the maintainability and repair efficiency of the equipment, ensures the concentricity of the connection parts and the stability of the transmission, avoids loosening problems, and significantly improves the efficiency of replacement and repair.
Smart Images

Figure CN224032756U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of conical diaphragm compressors, specifically to a direct-drive mechanism for a conical diaphragm compressor. Background Technology
[0002] Diaphragm compressors, with their superior gas purity and excellent sealing performance, occupy an important position in high-end manufacturing fields such as chemical engineering, pharmaceuticals, and new energy. The cone-sleeve direct-drive mechanism, as the core transmission unit of this system, achieves efficient conversion of the motor's rotational kinetic energy into gas compression energy through precise mechanical coupling and motion conversion. This not only significantly improves energy conversion efficiency but also greatly enhances the equipment's space utilization and operational stability.
[0003] In current practical applications, existing flywheel drive mechanisms cannot be quickly installed and disassembled, and power transmission connectors cannot be quickly replaced or repaired. The actual installation process often requires significant time and manpower, with cumbersome and complex steps involving precise alignment and tightening of numerous components. This not only reduces installation efficiency but also increases the risk of errors during installation. Furthermore, the frequent and difficult installation and disassembly processes can easily cause unnecessary damage to the flywheel drive mechanism itself and other connected components, further shortening the overall lifespan of the equipment.
[0004] In conclusion, it is urgent to develop a technical solution that enables the rapid installation and disassembly of the flywheel drive mechanism of a diaphragm compressor while facilitating maintenance. This is of great practical significance for improving the overall performance of diaphragm compressors, reducing maintenance costs, and increasing production efficiency. Utility Model Content
[0005] The purpose of this utility model is to provide a direct-drive mechanism for a cone-sleeve diaphragm compressor, which solves the following technical problems: existing flywheel drive mechanisms cannot be quickly installed and disassembled, and power transmission connectors cannot be quickly replaced and repaired.
[0006] The objective of this utility model can be achieved through the following technical solutions:
[0007] A direct-drive mechanism for a tapered diaphragm compressor includes a half-coupling. A first shaft connecting tapered sleeve is provided at the cylindrical end of the half-coupling. The lower end of the first shaft connecting tapered sleeve is connected to the power output shaft of the prime mover. A tapered sleeve disassembly hole is provided on the outer side of the first shaft connecting tapered sleeve. A first tapered sleeve locking bolt is provided inside the tapered sleeve disassembly hole. The first tapered sleeve locking bolt is used to realize the quick installation and disassembly of the half-coupling and the first shaft connecting tapered sleeve.
[0008] As a further embodiment of this utility model: the number of the tapered sleeve disassembly holes and the number of the first tapered sleeve locking bolts are multiple, the tapered sleeve disassembly holes are distributed in a ring around the center of the tapered sleeve connected to the first shaft, and the first tapered sleeve locking bolts correspond one-to-one with the tapered sleeve disassembly holes.
[0009] As a further aspect of this utility model: the lower end of the half coupling is connected to a connecting disc, which is used to transmit the torque of the half coupling.
[0010] As a further embodiment of this utility model: a plurality of second locking bolts are arranged in a ring around the outer edge of the connecting disc, and one end of the plurality of second locking bolts is connected to the same flywheel.
[0011] As a further embodiment of this utility model: a second shaft connecting cone sleeve is installed on the side of the flywheel away from the half coupling and connected to it by a cone sleeve locking bolt. The lower end of the second shaft connecting cone sleeve is connected to the crankshaft of the diaphragm compressor.
[0012] As a further embodiment of this utility model: the bottom of the flywheel is provided with a plurality of disassembly bolts, the center of which is located on the central axis of the flywheel.
[0013] As a further embodiment of this utility model, the half coupling, connecting disc, and flywheel are designed to be coaxial.
[0014] The beneficial effects of this utility model are:
[0015] (1) By setting a first tapered sleeve locking bolt between the half coupling and the shaft connecting tapered sleeve, the installation or disassembly of the connecting components can be easily completed by tightening or loosening the first tapered sleeve locking bolt without the need for special equipment, which improves the maintainability of the equipment. At the same time, the precision machining of the tapered sleeve mating surface ensures the concentricity of the connecting parts and the transmission stability, while the anti-loosening design of the locking bolt effectively avoids the loosening problem that may occur during the operation of the equipment.
[0016] (2) This utility model has a disassembly thread on the flywheel, which can be quickly and easily disassembled to replace and repair vulnerable parts in the transmission system. This realizes the rapid installation and disassembly of the flywheel transmission mechanism and significantly improves the efficiency of replacement and maintenance. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings.
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;
[0020] Figure 3This is a schematic diagram of the bottom structure of the flywheel of this utility model.
[0021] In the diagram: 1. Half coupling; 2. First shaft connecting tapered sleeve; 21. Tapered sleeve removal hole; 3. Tapered sleeve locking bolt; 4. Connecting disc; 5. Second locking bolt; 6. Flywheel; 7. Second shaft connecting tapered sleeve; 8. Removal bolt. Detailed Implementation
[0022] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0023] Example 1: Please refer to Figure 1-3 As shown, this utility model is a direct-drive mechanism for a tapered diaphragm compressor, including a half-coupling 1. A first shaft connecting tapered sleeve 2 is provided at the end of the column of the half-coupling 1. The self-centering characteristic of the first shaft connecting tapered sleeve 2 ensures the centering of the half-coupling 1 and avoids the eccentricity problem of traditional key connections. The first shaft connecting tapered sleeve 2 is connected to the power output shaft of the prime mover. A tapered sleeve disassembly hole 21 is provided on the outer side of the first shaft connecting tapered sleeve 2. A first tapered sleeve locking bolt 3 is provided inside the tapered sleeve disassembly hole 21. The first tapered sleeve locking bolt 3 is connected to the power output shaft of the prime mover. The tapered sleeve connection has the advantages of accurate centering, convenient assembly and disassembly, and the ability to transmit large torque, which can ensure that the power of the prime mover is stably and efficiently transmitted to the half-coupling 1.
[0024] During installation, the half-coupling 1 is aligned with the first shaft connecting tapered sleeve 2 and then tightened. As the first tapered sleeve locking bolt 3 is tightened, the first shaft connecting tapered sleeve 2 will not only hold the prime mover's power output shaft tightly, but also, through the friction and fitting pressure between the outer tapered surface of the first shaft connecting tapered sleeve 2 and the inner tapered surface of the half-coupling 1, firmly connect the half-coupling 1 to the first shaft connecting tapered sleeve 2. During installation and disassembly, simply tightening or loosening the first tapered sleeve locking bolt 3 is sufficient to complete the installation and disassembly of the components, facilitating the later maintenance and replacement of the prime mover components.
[0025] The lower end of the half-coupling 1 is connected to a connecting disc 4, which is used to transmit the torque of the half-coupling 1.
[0026] The outer edge of the connecting disc 4 is provided with a plurality of second locking bolts 5. One end of the plurality of second locking bolts 5 is connected to the same flywheel 6. The flywheel 6 and the connecting disc 4 are locked together by the second locking bolts 5 to transmit torque.
[0027] The flywheel 6 is mounted on the side away from the half coupling 1 and connected to the second shaft connecting tapered sleeve 7 by locking bolts. The flywheel 6 and the second shaft connecting tapered sleeve 7 are mounted on the power input shaft of the equipment by locking bolts. The installation and removal of the flywheel 6 and the second shaft connecting tapered sleeve 7 can be completed quickly by locking bolts, which facilitates the regular maintenance of the flywheel 6 and improves work efficiency.
[0028] The upper end of the second shaft connecting cone sleeve 7 is also provided with the same cone sleeve removal hole 21 as the first shaft connecting cone sleeve 2, which is used to complete the quick installation and removal of the flywheel 6 and the second shaft connecting cone sleeve 7.
[0029] The flywheel 6 is equipped with a disassembly bolt 8 at its bottom, which allows for quick and easy disassembly of the flywheel 6 to replace and repair components during operation, thereby improving maintenance efficiency.
[0030] The flywheel 6, connecting disc 4, and half coupling 1 are coaxial, with their central axes on the same straight line. The diameter of the flywheel 6 is larger than the diameter of the connecting disc 4.
[0031] In summary, a direct-drive mechanism for a cone-sleeve diaphragm compressor allows for easy installation and disassembly of components by tightening or loosening the first cone sleeve locking bolt 3 during use, facilitating subsequent maintenance and replacement of the prime mover components. The addition of a disassembly bolt 8 on the flywheel 6 enables quick and convenient disassembly of the flywheel 6 for replacement and maintenance of components during operation, thus improving maintenance efficiency.
[0032] Taking a large diaphragm compressor in an outdoor refinery as an example, when replacing internal compressor components and repairing motors and bearings, maintenance personnel need to first remove multiple components related to the flywheel 6 and half-coupling 1, such as protective covers and some pipelines, before they can access the components that need to be replaced. Due to the compact internal space and limited operating space of the equipment, when removing and installing the flywheel 6 and half-coupling 1, it is only necessary to use a wrench to quickly remove the first shaft connecting tapered sleeve 2 through the tapered sleeve removal hole 21 on the first shaft connecting tapered sleeve 2 by suspending the flywheel 6 and half-coupling 1. Moreover, after the maintenance is completed, the flywheel 6 and half-coupling 1 can be quickly installed and locked through the locking hole on the second shaft connecting tapered sleeve 7. This design significantly improves the operating efficiency and production efficiency of the equipment and has broad application prospects.
[0033] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.
Claims
1. A direct-drive mechanism for a cone-sleeve diaphragm compressor, characterized in that, The device includes a half coupling (1), and a first shaft connecting tapered sleeve (2) is provided at the end of the column body of the half coupling (1). The lower end of the first shaft connecting tapered sleeve (2) is connected to the power output shaft of the prime mover. A tapered sleeve disassembly hole (21) is provided on the outer side of the first shaft connecting tapered sleeve (2). A first tapered sleeve locking bolt (3) is provided inside the tapered sleeve disassembly hole (21). The first tapered sleeve locking bolt (3) is used to realize the quick installation and disassembly of the half coupling (1) and the first shaft connecting tapered sleeve (2). The number of the tapered sleeve disassembly holes (21) and the first tapered sleeve locking bolts (3) is multiple. The tapered sleeve disassembly holes (21) are distributed in a ring around the center of the tapered sleeve (2) connected to the first shaft, and the first tapered sleeve locking bolts (3) correspond one-to-one with the tapered sleeve disassembly holes (21). The lower end of the half-coupling (1) is connected to a connecting disc (4), which is used to transmit the torque of the half-coupling (1).
2. The direct-drive mechanism for a conical diaphragm compressor according to claim 1, characterized in that, The outer edge of the connecting disc (4) is provided with a plurality of second locking bolts (5), and one end of the plurality of second locking bolts (5) is connected to the same flywheel (6).
3. The direct-drive mechanism for a conical diaphragm compressor according to claim 2, characterized in that, The flywheel (6) is mounted on the side away from the half coupling (1) with a second shaft connecting cone sleeve (7) connected by a cone sleeve locking bolt. The lower end of the second shaft connecting cone sleeve (7) is connected to the crankshaft of the diaphragm compressor.
4. The direct-drive mechanism for a conical diaphragm compressor according to claim 2, characterized in that, The bottom of the flywheel (6) is provided with multiple disassembly bolts (8), and the center of the multiple disassembly bolts (8) is located on the central axis of the flywheel (6).
5. The direct-drive mechanism for a conical diaphragm compressor according to claim 2, characterized in that, The half-coupling (1), connecting disc (4) and flywheel (6) are designed to be coaxial.