An interference fit diaphragm

Abstract

The utility model relates to the technical field of diaphragm, specifically relates to an interference fit type diaphragm, including pipeline, the lateral wall fixed connection of pipeline has fixed flange, and the one end butt joint of fixed flane has the connecting flange, and the interference fit diaphragm between fixed flange and connecting flange, the top of fixed flange is equipped with the centring sliding slot, the centring sliding block of centring sliding slot sliding connection has, the centring sliding slot is equipped with the expansion slot, and the expansion slot sliding connection has the expansion block in. The drive sliding slot is equipped in fixed flange, the drive sliding slot and centring sliding slot intercommunication, and the drive sliding slot sliding connection has drive triangular block. The utility model provides an interference fit type diaphragm, can effectively solve the diaphragm in prior art in interference fit installation, and the butt joint of fixed flange and connecting flange is prone to eccentric, leads to the problem of uneven stress of diaphragm.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm technology, specifically to an interference fit diaphragm. Background Technology

[0002] In the transmission and sealing systems of industrial equipment, interference-fit diaphragms are widely used as key components. They primarily achieve power transmission and sealing between the shaft and connecting parts through their own elastic deformation. In existing technologies, interference-fit diaphragms are typically made by stamping thin metal sheets, with mounting holes on the edges for connection to bushings or flanges, while the central area forms a tight fit with the shaft through a pre-set interference fit. This structure is common in low-speed, low-load applications in small and medium-sized equipment, and has long held a certain market share due to its low manufacturing cost and simple installation process. Meanwhile, to improve wear resistance and corrosion resistance, some diaphragms undergo surface electroplating or are made of alloy materials.

[0003] In existing technologies, the assembly of diaphragms and flanges often faces problems such as low alignment accuracy and cumbersome operation. During interference fit installation, misalignment is prone to occur when the fixed flange and connecting flange are mated, resulting in uneven stress on the diaphragm and affecting sealing performance and service life. At the same time, traditional assembly lacks a convenient alignment adjustment structure, requiring multiple manual calibrations, which is not only time-consuming but also makes it difficult to ensure assembly consistency, especially in batch installations where efficiency is extremely low. Utility Model Content

[0004] To address the aforementioned shortcomings of existing technologies, this utility model provides an interference fit diaphragm sheet, which effectively solves the problem that uneven stress on the diaphragm sheet can occur when the fixed flange and connecting flange are misaligned during interference fit installation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides an interference fit diaphragm sheet, including a pipe, a fixed flange fixedly connected to the side wall of the pipe, a connecting flange abutting one end of the fixed flange, a diaphragm interference fit between the fixed flange and the connecting flange, a centering groove provided on the top of the fixed flange, a centering slider slidably connected in the centering groove, a telescopic groove provided in the centering groove, and a telescopic block slidably connected in the telescopic groove.

[0006] According to the above-mentioned interference fit diaphragm sheet, the centering groove and the centering slider are connected by a centering spring, and the telescopic groove and the telescopic block are connected by a telescopic spring.

[0007] The fixed flange has a drive slide groove, which is connected to the centering slide groove. A drive triangular block is slidably connected in the drive slide groove.

[0008] The drive triangular block is circumferentially arranged, and a synchronization ring is fixedly connected to the bottom of the drive triangular block. The synchronization ring is slidably connected to the outer wall of the fixed flange.

[0009] The synchronization ring is disposed inside the mounting tray, which is slidably connected to the outer wall of the fixed flange.

[0010] A threaded ring is fixedly connected to one side of the mounting tray, and the threaded ring is engaged with a threaded groove, which is formed at the bottom of the fixed flange.

[0011] The technical solution provided by this utility model has the following advantages compared with the known prior art: This invention effectively solves the problem of misalignment between fixed and connecting flanges in existing technologies. A centering slider is slidably connected within the centering groove on the top of the fixed flange, and an elastic connection is achieved through a centering spring. Combined with the telescopic block and telescopic spring within the telescopic groove, it automatically compensates for positional deviations during flange assembly, ensuring uniform force on the diaphragm. The circumferential arrangement of the drive triangular block and synchronizing ring allows for the simultaneous driving of multiple centering components, ensuring circumferential alignment of the flange and preventing a decrease in diaphragm sealing performance or a shortened service life due to localized misalignment. This structure eliminates the need for multiple manual calibrations, significantly improving assembly accuracy, and is particularly suitable for industrial transmission and sealing systems with high sealing requirements.

[0012] Simultaneously, the mounting tray engages with the threaded groove at the bottom of the fixed flange via a threaded ring. Rotating the mounting tray drives the synchronizing ring and the drive triangular block in tandem, achieving synchronous adjustment of the centering components and simplifying the operation. The sliding connection design between the synchronizing ring and the mounting tray ensures the stability of the adjustment process and avoids assembly inconsistencies caused by manual operation errors. For batch installation scenarios, this structure can significantly shorten installation time, reduce labor costs, and extend the overall service life of the equipment and reduce maintenance frequency by improving the uniformity of stress on the diaphragm. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0015] Reference numerals: 1. Pipe; 2. Fixed flange; 3. Connecting flange; 4. Diaphragm; 5. Centering groove; 6. Centering slider; 7. Centering spring; 8. Telescopic groove; 9. Telescopic block; 10. Telescopic spring; 11. Drive groove; 12. Drive triangular block; 13. Synchronizing ring; 14. Mounting tray; 15. Threaded ring; 16. Threaded groove. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0017] The present invention will be further described below with reference to the embodiments.

[0018] Example: Refer to Figures 1 to 3 An interference fit diaphragm of four pieces includes a pipe 1, a fixed flange 2 fixedly connected to the side wall of the pipe 1, a connecting flange 3 connected to one end of the fixed flange 2, and an interference fit diaphragm 4 between the fixed flange 2 and the connecting flange 3. A centering groove 5 is provided on the top of the fixed flange 2, a centering slider 6 is slidably connected within the centering groove 5, and a telescopic groove 8 is provided within the centering groove 5. A telescopic block 9 is slidably connected within the telescopic groove 8. The interference fit diaphragm 4 between the fixed flange 2 and the connecting flange 3, along with the centering groove 5, the centering slider 6, the telescopic groove 8, and the telescopic block 9, can compensate for docking deviations through a sliding structure, ensuring uniform force on the diaphragm 4, solving the problem of uneven force on the diaphragm 4 caused by flange eccentricity, and improving sealing and service life.

[0019] The centering slide 5 and the centering slider 6 are connected by a centering spring 7, and the telescopic slide 8 and the telescopic block 9 are connected by a telescopic spring 10. The centering spring 7 connects the centering slide 5 and the centering slider 6, and the telescopic spring 10 connects the telescopic slide 8 and the telescopic block 9. The position is automatically adjusted by elastic force, which enhances the centering flexibility and reset capability, reduces manual calibration, ensures assembly stability, and improves installation efficiency.

[0020] The fixed flange 2 has a drive slide groove 11, which is connected to the centering slide groove 5. A drive triangular block 12 is slidably connected in the drive slide groove 11. The drive slide groove 11 is connected to the centering slide groove 5 and has a built-in drive triangular block 12, which can transmit power to push the centering slider 6 to achieve precise centering adjustment, enhance the structural linkage, make the centering operation more convenient and efficient, and ensure the flange docking accuracy.

[0021] The drive triangle block 12 is circumferentially set, and a synchronization ring 13 is fixedly connected to the bottom of the drive triangle block 12. The synchronization ring 13 is slidably connected to the outer side wall of the fixed flange 2. The setting of the synchronization ring 13 can synchronously drive multiple sets of sliders to ensure the alignment of the flange and the diaphragm 4, avoid local misalignment, and improve the overall assembly consistency and reliability.

[0022] Synchronization ring 13 is set inside mounting tray 14, which is slidably connected to the outer wall of fixed flange 2. The timing ring 13 is set inside mounting tray 14, and the tray slides to the outer side of fixed flange 2, making the movement of timing ring 13 more stable, facilitating unified control through the tray, simplifying the adjustment process, reducing operational errors, and improving installation convenience.

[0023] A threaded ring 15 is fixedly connected to one side of the mounting tray 14. The threaded ring 15 is engaged with a threaded groove 16. The threaded groove 16 is located at the bottom of the fixed flange 2. The mounting tray 14 and the threaded ring 15 engage with the threaded groove 16 at the bottom of the fixed flange 2. Rotating the tray allows for linkage adjustment, achieving precise control, simplifying operation steps, adapting to batch installation, reducing labor costs, and improving assembly efficiency.

[0024] Specifically, this solution effectively solves the problem of misalignment between the fixed flange 2 and the connecting flange 3 in existing technologies. The centering slider 6 is slidably connected within the centering groove 5 at the top of the fixed flange 2, and elastically connected via the centering spring 7. Combined with the telescopic block 9 and telescopic spring 10 within the telescopic groove 8, it can automatically compensate for positional deviations during flange assembly, ensuring uniform force on the four diaphragms. The circumferential arrangement of the drive triangular block 12 and the synchronization ring 13 allows for the synchronous driving of multiple centering components, ensuring circumferential alignment of the flange and preventing a decrease in the sealing performance or a shortened service life of the four diaphragms due to localized misalignment. This structure eliminates the need for multiple manual calibrations, significantly improving assembly accuracy, and is particularly suitable for industrial transmission and sealing systems with high sealing requirements.

[0025] The working principle of this utility model is as follows: Centering adjustment is achieved through mechanical transmission. During installation, the mounting tray 14 is rotated according to the dimensions of the diaphragm 4, and its threaded ring 15 moves along the bottom threaded groove 16 of the fixed flange 2, driving the synchronous ring 13 and the circumferentially distributed drive triangular blocks 12 to rise and fall. The drive triangular blocks 12 abut against the centering slider 6, pushing the centering slider 6 to slide within the centering groove 5. The top of the centering slider 6 is flush with the fixed flange 2 and does not contact the diaphragm 4, but rather abuts against the diaphragm 4 through the central telescopic block 9. Multiple sets of circumferentially distributed centering sliders 6 and drive triangular blocks 12 work together, using the telescopic blocks 9 to accurately position the diaphragm 4, ensuring centering and avoiding eccentricity.

[0026] The telescopic block 9 serves a dual function during the alignment process. Connected to the telescopic spring 10, the telescopic block 9 directly contacts the diaphragm 4 to achieve alignment and positioning as the alignment slider 6 moves. Simultaneously, the telescopic block 9 can partially alleviate the pressure exerted on the diaphragm 4 by the mating flange through elastic deformation, reducing localized stress concentration on the diaphragm 4 during interference fits. The alignment spring 7 provides a restoring force to the alignment slider 6, ensuring structural stability after adjustment. Through the combination of mechanical linkage and elastic buffering, efficient alignment and force balance of the diaphragm 4 are achieved.

[0027] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. An interference-fit diaphragm sheet, characterized in that, The system includes a pipe (1), a fixed flange (2) is fixedly connected to the side wall of the pipe (1), a connecting flange (3) is connected to one end of the fixed flange (2), a diaphragm (4) is interference-fitted between the fixed flange (2) and the connecting flange (3), a centering groove (5) is provided on the top of the fixed flange (2), a centering slider (6) is slidably connected in the centering groove (5), an expansion groove (8) is provided in the centering groove (5), and an expansion block (9) is slidably connected in the expansion groove (8).

2. The interference fit diaphragm sheet according to claim 1, characterized in that, The centering groove (5) and the centering slider (6) are connected by a centering spring (7), and the telescopic groove (8) and the telescopic block (9) are connected by a telescopic spring (10).

3. The interference fit diaphragm sheet according to claim 1, characterized in that, The fixed flange (2) is provided with a drive slide groove (11), which is connected to the centering slide groove (5). A drive triangular block (12) is slidably connected in the drive slide groove (11).

4. The interference fit diaphragm sheet according to claim 3, characterized in that, The drive triangular block (12) is circumferentially arranged, and a synchronization ring (13) is fixedly connected to the bottom of the drive triangular block (12). The synchronization ring (13) is slidably connected to the outer wall of the fixed flange (2).

5. The interference fit diaphragm sheet according to claim 4, characterized in that, The synchronization ring (13) is disposed inside the mounting tray (14), which is slidably connected to the outer wall of the fixed flange (2).

6. The interference fit diaphragm sheet according to claim 5, characterized in that, A threaded ring (15) is fixedly connected to one side of the mounting tray (14), and the threaded ring (15) is engaged with a threaded groove (16), which is opened at the bottom of the fixed flange (2).

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