Flexible diaphragm coupling of compressor

Abstract

The flexible diaphragm coupling comprises a connecting pipe, shaft sleeves are arranged on the two sides of the connecting pipe, first flange plates are arranged at the two ends of the connecting pipe, second flange plates are arranged at the ends, close to the connecting pipe, of the shaft sleeves, first connecting holes are formed in the first flange plates at equal intervals, and second connecting holes are formed in the second flange plates at equal intervals. Second connecting holes are formed in the second flange plate at equal intervals, flexible diaphragms are arranged on the sides, close to each other, of the first flange plate and the second flange plate, and rivet sleeves are arranged in the flexible diaphragms at equal intervals. The utility model relates to the technical field of couplings, and solves the problems that in the prior art, a movable gap between a rivet sleeve and a buffer sleeve of a flexible diaphragm of a flexible diaphragm coupling of a compressor is reduced and even the rivet sleeve and the buffer sleeve abut against each other due to the heat expansion and cold contraction effect caused by strong centrifugal force generated when the diaphragm coupling rotates at a high speed and temperature shock. And the use stability and the service life of the coupler are influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to a flexible diaphragm coupling for a compressor. Background Art

[0002] A diaphragm coupling is composed of several groups of diaphragms (stainless steel thin plates) connected to the two half couplings alternately by bolts. Each group of diaphragms is stacked by several pieces. The diaphragms are divided into connecting rod type and integral type with different shapes. The diaphragm coupling compensates for the relative displacement of the two connected shafts by the elastic deformation of the diaphragm. It is a high-performance metal flexible coupling with strong components. It does not require lubricating oil, has a relatively compact structure, high strength, long service life, no rotational clearance, is not affected by temperature and oil stain, and has the characteristics of acid resistance, alkali resistance and corrosion prevention. It is suitable for the shafting transmission in the working conditions of high temperature, high speed and corrosive medium environment. In the prior art, the strong centrifugal force generated during the high-speed rotation of the diaphragm coupling and the thermal expansion and contraction effect caused by the sudden change of temperature make the moving gap between the riveting sleeve and the buffer sleeve of the flexible diaphragm of the compressor flexible diaphragm coupling decrease, and even abut against each other, affecting the use stability and service life of the coupling. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the utility model provides a flexible diaphragm coupling for a compressor, which solves the problem that in the prior art, the strong centrifugal force generated during the high-speed rotation of the diaphragm coupling and the thermal expansion and contraction effect caused by the sudden change of temperature make the moving gap between the riveting sleeve and the buffer sleeve of the flexible diaphragm of the compressor flexible diaphragm coupling decrease, and even abut against each other, affecting the use stability and service life of the coupling.

[0004] To achieve the above object, the utility model is realized by the following technical solutions: A flexible diaphragm coupling for a compressor, including a connecting pipe, shaft sleeves are arranged on both sides of the connecting pipe, first flange plates are arranged at both ends of the connecting pipe, second flange plates are arranged at the ends of the shaft sleeves close to the connecting pipe, first connecting holes are equidistantly opened inside the first flange plates, second connecting holes are equidistantly opened inside the second flange plates, a flexible diaphragm is arranged on the side where the first flange plate and the second flange plate are close to each other, riveting sleeves are equidistantly arranged inside the flexible diaphragm, the first connecting holes, the second connecting holes and the riveting sleeves are correspondingly arranged, limiting edges are arranged on the inner walls of the first connecting holes and the second connecting holes far from the riveting sleeves, limiting lining tubes are respectively connected in a matching manner with the inner walls of the first connecting holes and the second connecting holes, limiting cushion blocks are respectively connected in a matching manner with the inner walls of the first connecting holes and the second connecting holes, the limiting lining tubes and the limiting cushion blocks are arranged at intervals, a conical buffer sleeve is connected in a matching manner with the inner wall of the limiting lining tube, a fixing thread is opened inside the conical buffer sleeve, the conical buffer sleeve penetrates through the riveting sleeve, one end of the conical buffer sleeve far from the limiting lining tube is connected in a matching manner with the limiting cushion block, a fixing bolt penetrates through the inner wall of the limiting cushion block, and the fixing bolt is in threaded connection with the fixing thread.

[0005] Preferably, a shaft sleeve hole is arranged inside the shaft sleeve, a limiting screw hole is opened on the outer wall of the shaft sleeve, a limiting bolt is in threaded connection with the inner wall of the limiting screw hole, and a key groove is opened on the inner wall of the shaft sleeve hole on the side far from the limiting screw hole.

[0006] Preferably, a slot hole is arranged on the side of the limiting cushion block close to the conical buffer sleeve, and the slot hole is connected in a matching manner with the conical buffer sleeve.

[0007] Preferably, an inclined opening is arranged at one end of the shaft sleeve hole far from the second flange plate.

[0008] Preferably, a positioning edge is arranged at one end of the shaft sleeve hole far from the inclined opening.

[0009] The utility model provides a flexible diaphragm coupling for a compressor, which has the following beneficial effects: through the cooperation among a connecting pipe, a shaft sleeve, a first flange, a second flange, a first connecting hole, a second connecting hole, a flexible diaphragm, a riveting sleeve, a limiting edge, a conical buffer sleeve, a fixing thread, a limiting lining tube, a limiting cushion block and a fixing bolt, the conical buffer sleeve is spaced and fixed between the first flange and the second flange in different directions, and the conical buffer sleeve penetrates into the riveting sleeve to support the flexible diaphragm. Since the outer wall of the conical buffer sleeve is in a conical structure, the riveting sleeve can obtain a larger moving space on the conical buffer sleeve, which can reduce the influence of centrifugal force and thermal expansion and contraction on the stability of the coupling, and can reduce the wear between the riveting sleeve and the buffer sleeve, effectively absorb and disperse the vibration and impact generated by equipment operation or external environment changes, so as to improve the stability and service life of the coupling during high-speed operation.

[0010] Through the cooperation among the shaft sleeve, a shaft sleeve hole, a limiting screw hole, a limiting bolt and a keyway, after the compressor output shaft or the equipment connecting shaft is inserted into the shaft sleeve hole, the limiting bolt can be rotated to make the limiting bolt abut against the compressor output shaft or the equipment connecting shaft, or the key bar can be accurately embedded into the keyway to firmly connect and synchronously rotate the compressor output shaft or the equipment connecting shaft and the shaft sleeve, enabling different fixed connection methods between the compressor output shaft or the equipment connecting shaft and the shaft sleeve. Users can flexibly select the connection method according to different requirements of actual application scenarios, so as to improve the convenience of coupling installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the utility model;

[0012] Figure 2 is an external cross-sectional view of the conical buffer sleeve, the limiting lining tube and the limiting cushion block in the utility model;

[0013] Figure 3 is an external cross-sectional view of the limiting cushion block in the utility model;

[0014] Figure 4 is an external schematic view of the shaft sleeve, the second flange and the shaft sleeve hole in the utility model;

[0015] Figure 5 is Figure 1 a partial enlarged view of area A in

[0016] Figure 6 is Figure 1 a partial enlarged view of area B in

[0017] In the figure: 1. Connecting pipe; 2. Shaft sleeve; 3. First flange; 4. Second flange; 5. First connection hole; 6. Second connection hole; 7. Flexible diaphragm; 8. Riveting sleeve; 9. Limiting edge; 10. Conical buffer sleeve; 11. Fixed thread; 12. Limiting lining tube; 13. Limiting cushion block; 14. Fixed bolt; 15. Shaft sleeve hole; 16. Limiting screw hole; 17. Limiting bolt; 18. Keyway; 19. Slot hole; 20. Beveled opening; 21. Positioning edge. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] In the prior art, when the diaphragm coupling rotates at high speed, the strong centrifugal force generated and the thermal expansion and contraction effect caused by sudden temperature changes reduce the clearance between the riveting sleeve and the buffer sleeve of the flexible diaphragm of the compressor flexible diaphragm coupling, and even make them tightly contact each other, affecting the use stability and service life of the coupling.

[0020] In view of this, the present invention provides a compressor flexible diaphragm coupling. Through the cooperation among the connecting pipe, shaft sleeve, first flange, second flange, first connection hole, second connection hole, flexible diaphragm, riveting sleeve, limiting edge, conical buffer sleeve, fixed thread, limiting lining tube, limiting cushion block and fixed bolt, the conical buffer sleeve is spaced and fixed between the first flange and the second flange in different directions, and the conical buffer sleeve penetrates into the riveting sleeve to support the flexible diaphragm. Since the outer wall of the conical buffer sleeve is in a conical structure, the riveting sleeve can obtain a larger movement space on the conical buffer sleeve, reducing the influence of centrifugal force and thermal expansion and contraction on the stability of the coupling, and reducing the wear between the riveting sleeve and the buffer sleeve, effectively absorbing and dispersing the vibration and impact generated by equipment operation or external environment changes, and improving the stability and service life of the coupling during high-speed operation.

[0021] By those skilled in the art, all the electrical components in this case are connected to their adapted power supplies through wires, and appropriate controllers and encoders should be selected according to the actual situation to meet the control requirements. For the specific connection and control sequence, reference should be made to the sequence of the work of each electrical component in the following working principle to complete the electrical connection. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and no further description of the electrical control will be made.

[0022] By Figures 1-6It can be known that a flexible diaphragm coupling for a compressor includes a connecting pipe 1. Shaft sleeves 2 are arranged on both sides of the connecting pipe 1. First flange plates 3 are arranged at both ends of the connecting pipe 1. Second flange plates 4 are arranged at the ends of the shaft sleeves 2 close to the connecting pipe 1. First connecting holes 5 are equidistantly formed inside the first flange plates 3. Second connecting holes 6 are equidistantly formed inside the second flange plates 4. A flexible diaphragm 7 is arranged on the side where the first flange plates 3 and the second flange plates 4 are close to each other. Rivet sleeves 8 are equidistantly arranged inside the flexible diaphragm 7. The first connecting holes 5, the second connecting holes 6 and the rivet sleeves 8 are correspondingly arranged. Limiting edges 9 are arranged on the inner walls of the first connecting holes 5 and the second connecting holes 6 far from the rivet sleeves 8. Limiting lining tubes 12 are respectively connected in a matching manner to the inner walls of the first connecting holes 5 and the second connecting holes 6. Limiting cushion blocks 13 are respectively connected in a matching manner to the inner walls of the first connecting holes 5 and the second connecting holes 6. The limiting lining tubes 12 and the limiting cushion blocks 13 are arranged at intervals. A conical buffer sleeve 10 is connected in a matching manner to the inner wall of the limiting lining tube 12. The conical buffer sleeve 10 is made of a conical tubular metal material. A fixing thread 11 is formed inside the conical buffer sleeve 10. The conical buffer sleeve 10 penetrates through the rivet sleeve 8. One end of the conical buffer sleeve 10 far from the limiting lining tube 12 is connected in a matching manner to the limiting cushion block 13. A fixing bolt 14 penetrates through the inner wall of the limiting cushion block 13. The fixing bolt 14 is in threaded connection with the fixing thread 11;

[0023] In the specific implementation process, it is particularly worth noting that through the cooperation among the connecting pipe 1, the shaft sleeve 2, the first flange 3, the second flange 4 and the flexible diaphragm 7, the main structure of the compressor flexible diaphragm coupling is formed. The connecting pipe 1 is connected to the shaft sleeve 2 through the first flange 3 and the second flange 4, and the shaft sleeve 2 is respectively connected to the compressor output shaft and the equipment connecting shaft. The flexible diaphragm 7 is formed by stacking several sheets. The conical buffer sleeve 10 is made of conical tubular metal material. Through the cooperation among the connecting pipe 1, the shaft sleeve 2, the first flange 3, the second flange 4, the first connection hole 5, the second connection hole 6, the limiting edge 9, the conical buffer sleeve 10, the fixing thread 11, the limiting lining tube 12, the limiting cushion block 13 and the fixing bolt 14, by placing the limiting lining tube 12 and the limiting cushion block 13 into the first connection hole 5 of the first flange 3 at intervals, and placing the limiting lining tube 12 and the limiting cushion block 13 into the second connection hole 6 of the second flange 4 at intervals, so that the position of the limiting lining tube 12 of the first flange 3 corresponds to the position of the limiting cushion block 13 of the second flange 4, and the position of the limiting cushion block 13 of the first flange 3 corresponds to the position of the limiting lining tube 12 of the second flange 4, so that the limiting lining tube 12 and the limiting cushion block 13 clamp the conical buffer sleeve 10, and the conical buffer sleeve 10 is arranged at intervals between the first flange 3 and the second flange 4 in different directions. And by passing the fixing bolt 14 through the limiting cushion block 13 and screwing it into the conical buffer sleeve 10 to tighten and fix, the thick end of the conical buffer sleeve 10 is limited by the limiting lining tube 12, and at the same time the thin end of the conical buffer sleeve 10 abuts against the limiting cushion block 13, realizing the fixation of the conical buffer sleeve 10 between the limiting lining tube 12 and the limiting cushion block 13. Since the limiting lining tube 12 and the limiting cushion block 13 are limited by the limiting edge 9 in the first connection hole 5 and the second connection hole 6, the stable connection of the first flange 3 and the second flange 4 is realized. Through the cooperation among the connecting pipe 1, the shaft sleeve 2, the first flange 3, the second flange 4, the first connection hole 5, the second connection hole 6, the flexible diaphragm 7, the riveting sleeve 8, the limiting edge 9, the conical buffer sleeve 10, the fixing thread 11, the limiting lining tube 12, the limiting cushion block 13 and the fixing bolt 14, the conical buffer sleeve 10 is fixed at intervals between the first flange 3 and the second flange 4 in different directions, and the conical buffer sleeve 10 penetrates into the riveting sleeve 8 to support the flexible diaphragm 7. Since the outer wall of the conical buffer sleeve 10 is of a conical structure, the riveting sleeve 8 can obtain a larger moving space on the conical buffer sleeve 10, reduce the influence of centrifugal force and thermal expansion and contraction on the stability of the coupling, and reduce the wear between the riveting sleeve 8 and the buffer sleeve, effectively absorbing and dispersing the vibration and impact generated by equipment operation or external environment changes, and improving the stability and service life of the coupling during high-speed operation;

[0024] Furthermore, a shaft sleeve hole 15 is provided inside the shaft sleeve 2, and the shaft sleeve hole 15 is used for inserting and connecting the compressor output shaft or the equipment connecting shaft to realize the connection and fixation between the compressor output shaft or the equipment connecting shaft and the shaft sleeve 2. A limiting screw hole 16 is provided on the outer wall of the shaft sleeve 2, and a limiting bolt 17 is threadedly connected to the inner wall of the limiting screw hole 16. A key groove 18 is provided on the inner wall of the shaft sleeve hole 15 away from the limiting screw hole 16.

[0025] In the specific implementation process, it is worth pointing out that the sleeve hole 15 is used for inserting the compressor output shaft or the equipment connecting shaft so that it is connected to the sleeve tube 2. Through the cooperation among the sleeve tube 2, the sleeve hole 15, the limiting screw hole 16 and the limiting bolt 17, after the compressor output shaft or the equipment connecting shaft is inserted into the sleeve hole 15, the limiting bolt 17 is rotated to make the limiting bolt 17 and the compressor output shaft or the equipment connecting shaft abut against each other, so as to realize the connection and fixation between the compressor output shaft or the equipment connecting shaft and the sleeve tube 2. Through the cooperation among the sleeve tube 2, the sleeve hole 15 and the keyway 18, after the compressor output shaft or the equipment connecting shaft is inserted into the sleeve hole 15, the key bar is accurately embedded in the keyway 18 to realize the compressor output. The shaft or device connecting shaft and the shaft sleeve 2 are firmly connected and synchronously rotated, through the cooperation among the shaft sleeve 2, the shaft sleeve hole 15, the limiting screw hole 16, the limiting bolt 17 and the keyway 18. After the compressor output shaft or the device connecting shaft is inserted into the shaft sleeve hole 15, the limiting bolt 17 can be rotated to make the limiting bolt 17 and the compressor output shaft or the device connecting shaft abut against each other, or the key bar can be accurately embedded in the keyway 18 to achieve the firm connection and synchronous rotation between the compressor output shaft or the device connecting shaft and the shaft sleeve 2, so that the compressor output shaft or the device connecting shaft and the shaft sleeve 2 have different fixed connection modes, and the user can flexibly select the connection mode according to the different needs of the actual application scenarios, thereby improving the convenience of coupling installation;

[0026] Furthermore, a slot 19 is provided on one side of the limiting pad 13 close to the conical buffer sleeve 10, and the slot 19 is matched and connected with the conical buffer sleeve 10;

[0027] In the specific implementation process, it is worth pointing out that, through the cooperation between the conical buffer sleeve 10, the limiting cushion block 13 and the slot 19, by inserting the thin end of the conical buffer sleeve 10 into the slot 19, a tight and stable connection is formed between the conical buffer sleeve 10 and the limiting cushion block 13, thereby enhancing the overall stability of the structure;

[0028] Furthermore, an oblique opening 20 is provided at one end of the sleeve hole 15 away from the second flange 4, and the oblique opening 20 is used to guide the compressor output shaft or the equipment connecting shaft when it is inserted into the sleeve hole 15;

[0029] In the specific implementation process, it is particularly worth noting that the bevel 20 is used to guide the compressor output shaft or the equipment connecting shaft when it is inserted into the bushing hole 15, improving the convenience during the installation of the coupling;

[0030] Furthermore, a positioning edge 21 is provided at one end of the bushing hole 15 away from the bevel 20, and the positioning edge 21 is used to limit the compressor output shaft or the equipment connecting shaft when it is inserted into the bushing hole 15;

[0031] In the specific implementation process, it is particularly worth noting that the positioning edge 21 is used to limit the compressor output shaft or the equipment connecting shaft when it is inserted into the bushing hole 15.

[0032] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0033] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "rotation connection", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A flexible diaphragm coupling for a compressor, comprising a connecting pipe (1), characterized in that: On both sides of the connecting pipe (1), shaft sleeves (2) are provided. At both ends of the connecting pipe (1), first flange plates (3) are provided. At one end of the shaft sleeve (2) close to the connecting pipe (1), a second flange plate (4) is provided. Inside the first flange plate (3), first connecting holes (5) are equidistantly opened. Inside the second flange plate (4), second connecting holes (6) are equidistantly opened. On one side where the first flange plate (3) and the second flange plate (4) are close to each other, a flexible diaphragm (7) is provided. Inside the flexible diaphragm (7), rivet sleeves (8) are equidistantly arranged. The first connecting holes (5), the second connecting holes (6) and the rivet sleeves (8) are correspondingly arranged. On the inner wall of one side of the first connecting hole (5) and the second connecting hole (6) away from the rivet sleeve (8), a limiting edge (9) is provided. Inside the inner walls of the first connecting hole (5) and the second connecting hole (6), limiting lining tubes (12) are respectively connected in a matching manner. Inside the inner walls of the first connecting hole (5) and the second connecting hole (6), limiting pads (13) are respectively connected in a matching manner. The limiting lining tubes (12) and the limiting pads (13) are arranged at intervals. Inside the inner wall of the limiting lining tube (12), a conical buffer sleeve (10) is connected in a matching manner. Inside the conical buffer sleeve (10), a fixing thread (11) is opened. The conical buffer sleeve (10) penetrates through the rivet sleeve (8). One end of the conical buffer sleeve (10) away from the limiting lining tube (12) is connected with the limiting pad (13) in a matching manner. Inside the inner wall of the limiting pad (13), a fixing bolt (14) penetrates. The fixing bolt (14) is in threaded connection with the fixing thread (11).

2. The flexible diaphragm coupling of a compressor according to claim 1, wherein: Inside the shaft sleeve (2), a shaft sleeve hole (15) is provided. On the outer wall of the shaft sleeve (2), a limiting screw hole (16) is opened. Inside the inner wall of the limiting screw hole (16), a limiting bolt (17) is in threaded connection. On one side of the inner wall of the shaft sleeve hole (15) away from the limiting screw hole (16), a keyway (18) is opened.

3. The flexible diaphragm coupling of a compressor according to claim 1, wherein: On one side of the limiting pad (13) close to the conical buffer sleeve (10), a slot hole (19) is provided. The slot hole (19) is connected with the conical buffer sleeve (10) in a matching manner.

4. A flexible diaphragm coupling for a compressor according to claim 2, characterized in that: One end of the shaft sleeve hole (15) away from the second flange plate (4) is provided with an inclined opening (20).

5. The flexible diaphragm coupling of a compressor according to claim 4, wherein: One end of the shaft sleeve hole (15) away from the inclined opening (20) is provided with a positioning edge (21).

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