Novel flywheel mechanism of diaphragm compressor

Abstract

The utility model relates to the technical field of compressor flywheels, and discloses a novel flywheel mechanism of a diaphragm compressor, which comprises a flywheel and a half-coupling, the flywheel and the half-coupling are assembled in a clamping manner and locked through a fastener, and an assembly cavity for mounting an elastic body is formed between the flywheel and the half-coupling; a through hole matched with the elastic body is formed in the side, away from the flywheel, of the half coupling, an opening in one side of the through hole communicates with the assembling cavity, and an opening in the other side of the through hole is shielded through a check ring. The assembly cavity used for installing the elastic body is formed between the flywheel and the coupling half, then the through hole matched with the elastic body is formed in the coupling half, the opening of the through hole is shielded by the check ring, the elastic body can be prevented from flying out in the rotating process while the elastic body is convenient to install, only the check ring needs to be detached when the elastic body is replaced, and the replacement cost is reduced. And the operation can be completed from the through hole without moving other parts, so that the replacement process is greatly simplified, the downtime of equipment is obviously reduced, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of compressor flywheel technology, specifically a new flywheel mechanism for a diaphragm compressor. Background Technology

[0002] In the chemical production field, diaphragm compressors are widely used in the compression and transportation of various high-pressure gases, such as hydrogen and nitrogen. In a large chemical production workshop, multiple diaphragm compressors operate continuously, providing stable gas pressure for the entire production process. The flywheels and couplings of these diaphragm compressors are usually connected by elastic components, using elastic connecting parts (such as springs and rubber) to reduce vibration and noise, in order to meet the requirements of chemical production for equipment operation stability and low noise. However, in the actual production environment, this traditional elastic connection method has exposed many serious problems.

[0003] Chemical production is characterized by its continuous nature; any equipment failure can have a significant impact on the entire production process. Because flexible connectors are prone to aging and damage, requiring regular replacement, the complex working environment of diaphragm compressors in chemical workshops—enduring high temperatures and pressures, and potentially exposed to corrosive gases or liquids—accelerates the aging of these connectors. For example, when handling corrosive hydrogen, the lifespan of flexible connectors in such harsh conditions can be reduced from several months to just a few weeks or even less. Frequent replacement of these connectors not only increases maintenance costs but also leads to frequent equipment downtime. Each downtime necessitates adjustments to the entire production process, and restarting the equipment requires significant time for debugging, severely impacting production efficiency and increasing costs.

[0004] In the traditional flywheel structure of diaphragm compressors, replacing the flexible connector is a very cumbersome operation. Taking a large diaphragm compressor in a workshop as an example, when replacing the flexible connector, maintenance personnel need to first remove multiple components related to the flywheel and coupling, such as protective covers and some pipelines, before they can access the flexible connector. Due to the compact internal space and limited operating space of the equipment, removing and installing these components requires a lot of time and effort. Moreover, during the removal and installation process, even slight carelessness may damage other components, further increasing maintenance costs and equipment downtime. In addition, removing and moving these components may disrupt the original balance and installation accuracy of the equipment, leading to unstable operation after restarting. This not only affects the normal operation of the equipment and reduces production efficiency, but may also cause safety accidents, threatening the lives of operators and the property of the company.

[0005] Therefore, a flywheel mechanism that allows for easy replacement of the flexible connecting parts needs to be designed. Utility Model Content

[0006] To address the technical problems existing in the background art, this utility model proposes a new flywheel mechanism for a diaphragm compressor.

[0007] The present invention proposes a new flywheel mechanism for a diaphragm compressor, comprising a flywheel and a half-coupling. The flywheel and the half-coupling are snap-fitted together and locked by fasteners, forming an assembly cavity for installing an elastomer. The half-coupling has a through hole adapted to the elastomer on the side away from the flywheel. One side of the through hole is connected to the assembly cavity, and the other side of the through hole is blocked by a retaining ring.

[0008] The flywheel and half-coupling are assembled by snap-fit ​​and locked by fasteners, ensuring the stability of the connection between the two and effectively transmitting power during compressor operation. The assembly cavity formed between them is specially designed to install an elastomer, which plays a role in shock absorption and buffering, reducing vibration and noise during compressor operation.

[0009] The through hole on the half coupling is adapted to the elastomer, making the installation of the elastomer more convenient. One side of the through hole is connected to the assembly cavity, making it easy for the elastomer to be put into the assembly cavity. The other side of the opening is covered by a retaining ring, which can prevent the elastomer from flying out due to centrifugal force and other factors when the flywheel rotates at high speed, thus ensuring the safe operation of the equipment.

[0010] When the elastomer needs to be replaced, simply remove the retaining ring, and the old elastomer can be directly taken out from the through hole and the new one installed. Unlike the traditional method, there is no need to move other parts, which greatly simplifies the replacement process, reduces equipment downtime, lowers maintenance costs and difficulty, and improves equipment efficiency.

[0011] As a further optimization of this utility model, there are multiple assembly cavities and multiple through holes. The multiple assembly cavities are evenly distributed in a ring around the center of the flywheel, and each assembly cavity corresponds to a through hole.

[0012] Multiple assembly cavities and through holes are evenly distributed in a ring on the flywheel and half coupling. This design makes the distribution of elastomers more uniform. Multiple elastomers work together to more effectively disperse and buffer the vibration and impact forces generated during compressor operation. Compared with a single elastomer, it can better ensure the smooth operation of the flywheel mechanism. Each assembly cavity corresponds to a through hole, which not only facilitates the installation and replacement of elastomers, but also makes the distribution more reasonable, ensuring that each elastomer can be easily operated through the corresponding through hole, thus improving the rationality and practicality of the overall structure.

[0013] As a further optimized solution of this utility model, the through hole is opened on the disc end face of the half coupling, and the retaining ring is slidably fitted on the column body of the half coupling and attached to the disc end face of the half coupling and fastened by bolts to cover the opening of the through hole.

[0014] The through hole is made on the disc end face of the half coupling to facilitate the installation and maintenance of the elastomer, while ensuring the compactness of the structure. The retaining ring slides onto the column of the half coupling. During installation, the retaining ring can be easily slid to the appropriate position and fitted with the disc end face before being tightened with bolts. This installation method is simple and reliable. The retaining ring can effectively block the opening of the through hole to prevent the elastomer from coming out. Furthermore, when it is necessary to replace the elastomer, the retaining ring can be easily removed by disassembling the bolts. The operation is convenient and ensures the convenience and safety of equipment maintenance.

[0015] As a further optimization of this utility model, a first connecting cone sleeve connected to the power output shaft of the prime mover is installed at the end of the column of the half coupling, and a second connecting cone sleeve connected to the crankshaft of the diaphragm compressor is installed on the side of the flywheel away from the half coupling.

[0016] The first connecting tapered sleeve is installed at the end of the column of the half-coupling and is used to connect to the power output shaft of the prime mover. The tapered sleeve connection has the advantages of accurate centering, convenient installation and disassembly, and the ability to transmit large torque. It can ensure that the power of the prime mover is stably and efficiently transmitted to the half-coupling. The second connecting tapered sleeve installed on the other side of the flywheel is used to connect to the crankshaft of the diaphragm compressor. It also utilizes the advantages of the tapered sleeve connection to achieve stable power transmission and precise installation positioning between the flywheel and the crankshaft of the diaphragm compressor, ensuring the normal operation of the entire compressor system.

[0017] As a further optimization of this utility model, the elastomer is cylindrical, preferably made of nylon, and the axis of the elastomer coincides with the axis of the through hole and is parallel to the axis of the half coupling. At least one end face of the elastomer is set as an outwardly convex arc surface to retain the radial compensation amount and increase the radial compensation range to compensate for the misalignment of the half coupling and the flywheel during installation.

[0018] The elastomer is designed as a cylinder, coinciding with and paralleling the axis of the through hole and the half coupling, ensuring its stability within the assembly cavity. This allows the elastomer to be subjected to uniform force during buffering and shock absorption. Outwardly convex arc surfaces can be provided at one or both ends of the elastomer, compensating for any misalignment between the half coupling and the flywheel during installation. This design increases the radial compensation range, effectively avoiding problems such as increased equipment vibration and component wear caused by inaccurate alignment, and improving the installation accuracy and operational stability of the flywheel mechanism.

[0019] As a further optimized solution of this utility model, a first limiting block is installed on the end face of the flywheel near the half coupling, and a second limiting block is provided on the end of the half coupling near the flywheel. The second limiting block and the first limiting block are engaged with each other and form an assembly cavity adapted to the elastic body.

[0020] The first and second limiting blocks interlock to form an assembly cavity that fits the elastomer. This design provides a stable installation space for the elastomer, preventing it from shifting or shaking within the assembly cavity. This ensures that the elastomer can properly perform its shock absorption and buffering functions. The interlocking structure of the limiting blocks enhances the stability of the assembly cavity, making the connection between the flywheel and the half-coupling more secure. During equipment operation, it can better withstand vibration and impact, ensuring the reliability of the entire flywheel mechanism.

[0021] As a further optimized solution of this utility model, there are multiple first limiting blocks and they are evenly distributed in a ring along the center of the flywheel. The number of second limiting blocks is the same as the number of first limiting blocks and they are evenly distributed in a ring along the center line of the half coupling. The second limiting blocks and the first limiting blocks are staggered and interlocked to form an assembly cavity enclosure. An assembly cavity is formed between adjacent first limiting blocks and second limiting blocks.

[0022] Multiple first and second limit blocks are evenly distributed in a ring along the center of the flywheel and the center line of the half coupling, respectively, and are staggered and interlocked. The multiple assembly cavity enclosures formed in this way can distribute the elastomer more evenly, improving the balance performance of the entire flywheel mechanism. The assembly cavity formed between adjacent first and second limit blocks not only provides an installation position for the elastomer, but also makes the layout of the assembly cavity more reasonable, which facilitates the installation and replacement of the elastomer. At the same time, during equipment operation, it can better disperse and bear the forces from all directions, enhancing the stability and reliability of the flywheel mechanism.

[0023] As a further optimization of this utility model, the first limiting block is an isosceles trapezoidal structure with the same shape as the second limiting block. The lower base of the isosceles trapezoid is an arc surface, which is the first arc surface, and its center is located on the central axis of the flywheel. The two sides of the isosceles trapezoid are both inwardly concave arc surfaces, which are the second arc surfaces. Two adjacent second arc surfaces form an assembly cavity. The second arc surfaces on both sides of the second limiting block are respectively connected to the openings of adjacent through holes, and the center of the second arc surface is located on the central axis of the through hole.

[0024] The first and second limiting blocks are designed as isosceles trapezoidal structures, and the special design of the related arc surfaces is of great significance. The center of the first arc surface of the lower base of the isosceles trapezoid is on the central axis of the flywheel, which helps to ensure the concentricity of the limiting block installation and makes the entire flywheel mechanism run more smoothly. The second arc surfaces of the two sides form the assembly cavity. This design not only ensures the regular shape of the assembly cavity, but also allows for better adaptation to the elastomer. The second arc surfaces on both sides of the second limiting block are connected to the adjacent through hole openings, and the center of the arc surface is located on the central axis of the through hole. This further optimizes the fit between the assembly cavity, the elastomer, and the through hole, making the installation of the elastomer more precise and improving the overall performance of the flywheel mechanism.

[0025] Furthermore, the central angle of the second arc surface is greater than 90 degrees, which makes the assembly cavity space formed by two adjacent second arc surfaces larger, which can better accommodate the elastomer. When the elastomer is subjected to external force, there is more space for elastic deformation, thereby improving the buffering and shock absorption effect of the elastomer. The larger central angle can also enhance the constraint ability of the assembly cavity on the elastomer, prevent the elastomer from excessive displacement in the assembly cavity, ensure that the elastomer is always in a good working state, and improve the stability and reliability of the flywheel mechanism.

[0026] As a further optimization of this utility model, there is a gap between the adjacent first limiting block and the second limiting block for assembly adjustment. Using this assembly adjustment gap, the relative position of the flywheel and the half coupling can be finely adjusted, making the installation of the elastic body more precise. In the process of equipment manufacturing, certain manufacturing errors are inevitable. This gap can compensate for these errors, ensuring a tighter and more stable connection between the flywheel and the half coupling. During the operation of the equipment, due to factors such as vibration and temperature changes, the components may undergo slight deformation. This gap can also play a certain buffering role, ensuring the normal operation of the entire flywheel mechanism and extending the service life of the equipment.

[0027] The novel flywheel mechanism for diaphragm compressors proposed in this invention has the following beneficial effects:

[0028] (i) By forming an assembly cavity for installing the elastomer between the flywheel and the half coupling, and then opening a through hole on the half coupling that is compatible with the elastomer, and covering the opening of the through hole with a retaining ring, it is convenient to install the elastomer and prevent the elastomer from flying out during rotation. Moreover, when replacing the elastomer, only the retaining ring needs to be removed and the operation can be completed from the through hole without moving other parts. This greatly simplifies the replacement process. Taking a large diaphragm compressor as an example, the time for replacing the elastomer can be shortened from several hours to a dozen minutes, significantly reducing equipment downtime, reducing maintenance costs, improving equipment efficiency, and ensuring the continuity of chemical production.

[0029] (ii) Multiple uniformly distributed ring-shaped elastic bodies are used, and at least one end face of the elastic body is an outwardly convex arc surface, which can effectively compensate for the alignment error of the half coupling and the flywheel, and more evenly disperse and buffer vibration and impact force. Compared with the traditional single elastic connector, the vibration reduction and noise reduction effect is greatly improved. When handling high-pressure gas, the equipment vibration is significantly reduced and the noise is reduced, ensuring the stable operation of the equipment, reducing component wear and failure caused by vibration, extending the service life of the equipment, and creating a safer and more comfortable working environment for operators.

[0030] (III) By setting multiple interlocking first and second limit blocks between the flywheel and the half coupling, an assembly cavity enclosure is formed, providing a stable installation space for the elastomer. Moreover, an assembly adjustment gap is provided between adjacent first and second limit blocks, allowing for fine adjustment of the relative position of the flywheel and the half coupling during assembly, making the installation of the elastomer more precise. This gap can also compensate for manufacturing errors and minor deformations during equipment operation, ensuring the normal operation of the entire flywheel mechanism and improving equipment performance and stability.

[0031] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] Figure 1 This is a first-person perspective exploded structural diagram of the present invention;

[0033] Figure 2 This is a second-view exploded structural diagram of the present invention;

[0034] Figure 3 This is a third-person perspective exploded structural diagram of the present invention;

[0035] Figure 4 This is a schematic diagram of the assembly structure of the first limiting block and the second limiting block of this utility model.

[0036] Figure description: 1. Flywheel; 2. Half coupling; 3. First connecting tapered sleeve; 4. Second connecting tapered sleeve; 5. Elastomer; 6. Through hole; 7. Retaining ring; 8. First limiting block; 9. Second limiting block. Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0038] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] In the operation of a diaphragm compressor, the performance of the flywheel mechanism is crucial to the stability and reliability of the equipment. This invention addresses the shortcomings of traditional diaphragm compressor flywheel mechanisms in terms of replacing elastic connecting parts by designing a new flywheel mechanism, the specific implementation of which is as follows:

[0040] like Figures 1-3 As shown, the new flywheel mechanism of the diaphragm compressor mainly consists of a flywheel 1 and a half-coupling 2. The two are assembled by snap-fit ​​and locked by fasteners to form a stable connection structure, ensuring that power can be effectively transmitted during the operation of the compressor. Between the flywheel 1 and the half-coupling 2, there is a special assembly cavity for installing the elastomer 5, which is the key part of the entire mechanism to achieve the functions of shock absorption and buffering.

[0041] Specifically, the half-coupling 2 has multiple through holes 6 that are adapted to the elastic body 5 on the side away from the flywheel 1. These through holes 6 are evenly distributed in a ring on the disc end face of the half-coupling 2, and each through hole 6 corresponds to an assembly cavity. This design not only facilitates the installation of the elastic body 5, but also makes the distribution of the elastic body 5 more uniform, thereby better exerting its shock absorption and buffering effects.

[0042] Furthermore, one side of the through hole 6 is connected to the assembly cavity, while the other side is blocked by the retaining ring 7. The retaining ring 7 is slidably fitted onto the column of the half coupling 2, abutting against the disc end face of the half coupling 2, and is secured with bolts. This design allows for easy installation of the elastomer 5 by simply inserting it into the assembly cavity through the through hole 6 and then installing the retaining ring 7. When the elastomer 5 needs to be replaced, only the bolts need to be removed and the retaining ring 7 removed, allowing the old elastomer to be directly removed from the through hole 6 and the new one to be installed without moving other parts. This greatly simplifies the replacement process, reduces equipment downtime, and lowers maintenance costs and difficulty.

[0043] like Figures 1-3 As shown, a first connecting cone sleeve 3 is installed at the end of the column of the half coupling 2. The connecting cone sleeve is used to connect with the power output shaft of the prime mover. The cone sleeve connection has the advantages of accurate centering, convenient installation and disassembly, and the ability to transmit large torque, which can ensure that the power of the prime mover is transmitted to the half coupling 2 stably and efficiently.

[0044] A second connecting cone sleeve 4 is installed on the side of the flywheel 1 away from the half coupling 2, which is used to connect with the crankshaft of the diaphragm compressor. By utilizing the advantages of the cone sleeve connection, stable power transmission and precise installation positioning between the flywheel 1 and the crankshaft of the diaphragm compressor are achieved, ensuring the normal operation of the entire compressor system.

[0045] like Figure 1 and Figure 2As shown, the elastomer 5 is designed as a cylinder, preferably made of nylon, which has good elasticity and wear resistance. The axis of the elastomer 5 coincides with the axis of the through hole 6 and is parallel to the axis of the half coupling 2 to ensure its stability in the assembly cavity and to make the elastomer 5 uniformly stressed during buffering and shock absorption.

[0046] To compensate for potential alignment errors between the half-coupling 2 and the flywheel 1 during installation, at least one end face of the elastic body 5 is designed as an outwardly convex arc surface, increasing the radial compensation range. This design effectively avoids problems such as increased equipment vibration and component wear caused by inaccurate alignment, and improves the installation accuracy and operational stability of the flywheel mechanism.

[0047] like Figures 1-4 As shown, multiple first limiting blocks 8 are installed on the side end face of the flywheel 1 near the half coupling 2. These first limiting blocks 8 are evenly distributed in a ring along the center of the flywheel 1. The half coupling 2 has the same number of second limiting blocks 9 at the end near the flywheel 1. The second limiting blocks 9 are evenly distributed in a ring along the center line of the half coupling 2, and are staggered from the first limiting blocks 8 and interlocked with each other. An assembly cavity adapted to the elastic body 5 is formed between adjacent first limiting blocks 8 and second limiting blocks 9, which together form the assembly cavity enclosure.

[0048] This structure provides a stable installation space for the elastomer 5, preventing it from shifting or shaking within the assembly cavity and ensuring that it can properly perform its shock absorption and buffering functions. At the same time, the even distribution and interlocking of multiple limit blocks enhance the stability of the entire assembly cavity enclosure, making the connection between the flywheel 1 and the half coupling 2 more secure. During equipment operation, it can better withstand vibration and impact, ensuring the reliability of the entire flywheel mechanism.

[0049] Specifically, such as Figure 4 As shown, both the first limiting block 8 and the second limiting block 9 are designed as isosceles trapezoidal structures. The lower base of the isosceles trapezoid is an arc surface, namely the first arc surface, and its center is located on the central axis of the flywheel 1. This helps to ensure the concentricity of the limiting block installation and makes the entire flywheel mechanism run more smoothly. The two sides of the isosceles trapezoid are both inwardly concave arc surfaces, namely the second arc surfaces. Two adjacent second arc surfaces form an assembly cavity. The second arc surfaces on both sides of the second limiting block 9 are connected to the openings of the adjacent through holes 6, and the center of the second arc surface is located on the central axis of the through hole 6.

[0050] This design further optimizes the fit between the assembly cavity, the elastic body 5, and the through hole 6, making the installation of the elastic body 5 more precise. In addition, the central angle of the second arc surface is greater than 90 degrees, which makes the assembly cavity space formed by the two adjacent second arc surfaces larger, better able to accommodate the elastic body 5, and provides more space for elastic deformation when the elastic body 5 is subjected to external force, thereby improving the buffering and shock absorption effect of the elastic body 5. At the same time, the larger central angle can also enhance the constraint ability of the assembly cavity on the elastic body 5, prevent the elastic body 5 from excessively displacing within the assembly cavity, ensure that the elastic body 5 is always in good working condition, and improve the stability and reliability of the flywheel mechanism.

[0051] Furthermore, such as Figure 4 As shown, a gap for assembly adjustment is specially set between the adjacent first limiting block 8 and second limiting block 9. During the equipment manufacturing process, due to certain manufacturing errors, this gap can be used to fine-tune the relative position of the flywheel 1 and the half coupling 2, so that the installation of the elastic body 5 is more precise. During the operation of the equipment, due to factors such as vibration and temperature changes, the components may undergo slight deformation. This gap can also play a certain buffering role, ensuring the normal operation of the entire flywheel mechanism and extending the service life of the equipment.

[0052] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel flywheel mechanism for a diaphragm compressor, comprising a flywheel (1) and a half-coupling (2), characterized in that, The flywheel (1) and the half coupling (2) are snapped together and locked with fasteners, forming an assembly cavity for installing the elastomer (5). The half coupling (2) has a through hole (6) adapted to the elastomer (5) on the side away from the flywheel (1). One side of the through hole (6) is connected to the assembly cavity, and the other side of the through hole (6) is blocked by a retaining ring (7).

2. The new flywheel mechanism for a diaphragm compressor according to claim 1, characterized in that, There are multiple assembly cavities and through holes (6). The multiple assembly cavities are evenly distributed in a ring around the center of the flywheel (1), and each assembly cavity corresponds to a through hole (6).

3. The new flywheel mechanism for a diaphragm compressor according to claim 1, characterized in that, The through hole (6) is opened on the disc end face of the half coupling (2). The retaining ring (7) is slidably fitted on the column of the half coupling (2) and is attached to the disc end face of the half coupling (2) and fastened with bolts to block the opening of the through hole (6).

4. The new flywheel mechanism for a diaphragm compressor according to claim 1, characterized in that, The first connecting cone sleeve (3) connected to the power output shaft of the prime mover is installed at the end of the column of the half coupling (2), and the second connecting cone sleeve (4) connected to the crankshaft of the diaphragm compressor is installed on the side of the flywheel (1) away from the half coupling (2).

5. The new flywheel mechanism for a diaphragm compressor according to claim 1, characterized in that, The elastic body (5) is cylindrical, and the axis of the elastic body (5) coincides with the axis of the through hole (6) and is parallel to the axis of the half coupling (2). At least one end face of the elastic body (5) is set as an outwardly convex arc surface to retain the radial compensation amount.

6. A new flywheel mechanism for a diaphragm compressor according to any one of claims 1-5, characterized in that, A first limiting block (8) is installed on one end face of the flywheel (1) near the half coupling (2), and a second limiting block (9) is provided on one end of the half coupling (2) near the flywheel (1). The second limiting block (9) and the first limiting block (8) are engaged with each other and form an assembly cavity that is compatible with the elastic body (5).

7. A new flywheel mechanism for a diaphragm compressor according to claim 6, characterized in that, The number of first limiting blocks (8) is multiple and they are evenly distributed in a ring along the center of the flywheel (1). The number of second limiting blocks (9) is the same as the number of first limiting blocks (8) and they are evenly distributed in a ring along the center line of the half coupling (2). The second limiting blocks (9) and the first limiting blocks (8) are staggered and interlocked to form an assembly cavity enclosure. An assembly cavity is formed between adjacent first limiting blocks (8) and second limiting blocks (9).

8. The new flywheel mechanism for a diaphragm compressor according to claim 7, characterized in that, The first limiting block (8) is an isosceles trapezoid and has the same shape as the second limiting block (9). The lower base of the isosceles trapezoid is an arc surface, which is the first arc surface and its center is located on the central axis of the flywheel (1). The two sides of the isosceles trapezoid are both inwardly concave arc surfaces, which are the second arc surfaces. Two adjacent second arc surfaces form an assembly cavity. The second arc surfaces on both sides of the second limiting block (9) are connected to the openings of the adjacent through holes (6), and the center of the second arc surface is located on the central axis of the through hole (6).

9. A new flywheel mechanism for a diaphragm compressor according to claim 8, characterized in that, The central angle of the second arc is greater than 90 degrees.

10. A new flywheel mechanism for a diaphragm compressor according to claim 7, characterized in that, There is a gap between the adjacent first limiting block (8) and the second limiting block (9) for assembly adjustment.

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