Industrial mechanical transmission shaft assembly with end face sealing assembly and sealing test method

Abstract

The invention belongs to the field of industrial mechanical transmission shaft sealing, and particularly relates to an industrial mechanical transmission shaft assembly with an end face sealing assembly and a sealing test method. A transmission shaft main body is arranged in the middle of the interior of the device outer main body, and a sealing mechanism is arranged between the device outer main body and the transmission shaft main body; the sealing mechanism comprises a first fixing sleeve, and the first fixing sleeve is inserted into the device outer main body; through the design of the sealing mechanism, the function of improving the sealing effect by designing sealing assemblies on the left side and the right side of the transmission shaft at the same time is achieved, and the problems that an existing device is only provided with a sealing assembly on the single side of the transmission shaft, during use, liquid will be accumulated on the left side and the right side of a sealing piece, and the transmission shaft cannot rotate easily are solved. The problem that an existing device sealing piece cannot guarantee the sealing effect for a long time due to the fact that long-time operation is usually needed is solved, and the sealing time efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of industrial mechanical transmission shaft seals, and specifically to an industrial mechanical transmission shaft assembly with an end face seal assembly and a seal testing method. Background Art

[0002] Industrial mechanical transmission shafts are the core power transmission components of various rotating equipment, mainly used to connect prime movers and working mechanisms to achieve efficient transmission of torque and rotational speed. Modern industrial-grade transmission shaft systems are usually forged from high-quality alloy steel, and after quenching and tempering heat treatment and precision machining, they have excellent torsional strength and fatigue life. The typical structure includes key components such as a shaft body, a bearing support system, a coupling, and a sealing device, which can meet the requirements of various working conditions from low-speed heavy-load (such as rolling mills) to high-speed precision (such as centrifugal compressors).

[0003] For the existing industrial mechanical transmission shaft, reference can be made to a water pump transmission shaft with a publication number of CN218953624U, which includes a transmission shaft body, a screw, and a clamping hole, and also includes a pollution prevention mechanism. The pollution prevention mechanism is composed of a circumferential cutting groove, a collar, a strip groove, a positioning strip, and an expansion ring. A screw is machined at one end shaft head of the transmission shaft body, and a clamping hole is opened at the other end shaft head of the transmission shaft body where it can be inserted into the water pump. A circumferential cutting groove for the collar to be inserted is opened at the transmission shaft body on one side of the clamping hole, and strip grooves for positioning the positioning strip on the inner wall of the collar to be embedded are opened opposite to each other on the groove wall of the circumferential cutting groove. An expansion ring is integrally formed in the middle of the ring body of the collar. A pollution prevention mechanism is arranged at the transmission shaft body behind the clamping hole, so as to effectively ensure the sealing performance after the transmission shaft body is installed with the water pump by means of the pollution prevention mechanism. When a flat cut surface is opened at the transmission shaft body, the transmission shaft body can be more firmly clamped in the components of the water pump and will not rotate by itself;

[0004] The above-mentioned device only has a sealing component on one side of the transmission shaft. When in use, liquid will accumulate on both sides of the seal, and the transmission shaft usually needs to operate for a long time, resulting in the seal of the existing device being unable to ensure the sealing effect for a long time and having a low service life. Therefore, an industrial mechanical transmission shaft assembly with an end face seal assembly and a seal testing method are proposed for the above problems. Summary of the Invention

[0005] In order to solve the problem that the existing device only has a sealing component on one side of the transmission shaft. When in use, liquid will accumulate on both sides of the seal, and the transmission shaft usually needs to operate for a long time, resulting in the seal of the existing device being unable to ensure the sealing effect for a long time and having a low service life, the present invention proposes an industrial mechanical transmission shaft assembly with an end face seal assembly and a seal testing method.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: An industrial mechanical transmission shaft assembly with an end face seal assembly and a seal testing method of the present invention includes an outer main body of the device; a transmission shaft main body is arranged at the middle position inside the outer main body of the device, and a sealing mechanism is arranged between the outer main body of the device and the transmission shaft main body;

[0007] The sealing mechanism includes a first fixed sleeve, the first fixed sleeve is inserted inside the outer main body of the device, and the first fixed sleeve is slidably connected to the outer main body of the device. The outer side of the transmission shaft main body is fixedly connected to the inner wall of the second fixed sleeve. Fixed collar rings are also arranged at the left and right ends of the outer side of the second fixed sleeve, and the outer side of the second fixed sleeve is fixedly connected to the inner wall of the fixed collar ring. A plurality of movable limit rods are sleeved on the fixed collar ring, and the fixed collar ring is slidably connected to the movable limit rods. One end of the movable limit rod is fixedly connected to one end of the movable push plate. A first return spring is sleeved on the outer side of the movable limit rod. One end of the first return spring is fixedly connected to the fixed collar ring, and the other end of the first return spring is fixedly connected to one end of the movable push plate.

[0008] Preferably, the other end of the movable push plate is fixedly connected to one end of the first sealing plate. Second sealing plates are also arranged on the left and right sides of the inner wall of the first fixed sleeve, and the inner wall of the first fixed sleeve is fixedly connected to one end of the second sealing plate. The other end of the first sealing plate abuts against the other end of the second sealing plate.

[0009] Preferably, the inner part at the upper position of the movable push plate is fixedly connected to the inner wall of the first sealing block. The outer side of the first sealing block abuts against the inner wall of the first fixed sleeve. The inner part at the lower position of the movable push plate is fixedly connected to the outer side of the fifth sealing block. The inner wall of the fifth sealing block abuts against the outer side of the second fixed sleeve.

[0010] Preferably, the left side position of the inner wall of the outer main body of the device is fixedly connected to the outer side of the second sealing block. The inner wall of the second sealing block abuts against the outer side of the first fixed sleeve near the left side position. The right side position of the inner wall of the outer main body of the device is fixedly connected to the outer side of the sixth sealing block. The inner wall of the sixth sealing block abuts against the outer side of the first fixed sleeve near the right side position.

[0011] Preferably, the right end of the first fixed sleeve is fixedly connected to the left end of the third sealing block. A sealing slot is provided on the left side of the outer main body of the device. The right end of the third sealing block is inserted inside the sealing slot. A plurality of fixing bolts are sleeved on the left end of the first fixed sleeve, and the first fixed sleeve is slidably connected to the fixing bolts. A plurality of fixing threaded grooves are provided on the left side of the outer main body of the device. The right end of the fixing bolt is inserted inside the fixing threaded groove, and the fixing bolt is threadedly connected to the fixing threaded groove.

[0012] Preferably, a cooling component is provided between the outer main body of the device and the first fixed sleeve. The cooling component includes a second connecting pipe, which is arranged inside the outer main body of the device and the first fixed sleeve, and the outer side of the second connecting pipe is also fixedly connected to the inner walls of the outer main body of the device and the first fixed sleeve. The top end of the second connecting pipe is fixedly connected to the bottom end of the first connecting pipe, and the inside of the second connecting pipe communicates with the inside of the first connecting pipe. The outer side of the first connecting pipe is fixedly connected to the inner wall of the outer main body of the device, and the top end of the first connecting pipe is fixedly connected to the bottom end of the connecting head.

[0013] Preferably, the top end of the connecting head is fixedly connected to the bottom end of the liquid injection pipe head. A plurality of moving guide grooves are provided at the top end of the liquid injection pipe head. A moving push rod is inserted into the moving guide grooves, and the moving push rod is slidably connected to the moving guide grooves. The top end of the moving push rod is fixedly connected to the bottom end of the pressing plate.

[0014] Preferably, the bottom end of the moving push rod is fixedly connected to the top end of the fixing plate. The top end of the fixing plate is fixedly connected to the bottom end of the extrusion plate. The top end of the extrusion plate is fixedly connected to the bottom end of the fourth sealing block. The top end of the fourth sealing block abuts against the inner top end of the liquid injection pipe head.

[0015] Preferably, a second return spring is sleeved outside the moving push rod. The top end of the second return spring is fixedly connected to the inner top end of the liquid injection pipe head, and the bottom end of the second return spring is fixedly connected to the top end of the fixing plate.

[0016] Preferably, a sealing test method for an industrial mechanical transmission shaft assembly with an end face sealing component is provided. The sealing test method includes the following steps:

[0017] S1: Start the transmission shaft main body to rotate at the rated speed, and at the same time drive the first sealing plate to rotate. The first sealing plate always abuts against the wear compensation effect of the second sealing plate under the thrust of the first return spring to ensure no leakage in dynamic sealing. At the same time, the contact surface between the first sealing plate and the second sealing plate, the contact between the first sealing block and the inner wall of the first fixed sleeve, and the contact between the fifth sealing block and the outer side of the second fixed sleeve ensure the sealing performance.

[0018] S2: The fitting part between the third sealing block and the sealing slot, and the contact surfaces between the second sealing block and the sixth sealing block and the outer side of the first fixed sleeve are completely sealed to ensure that the liquid cannot pass through.

[0019] S3: Press the pressing plate of the liquid injection pipe head to open the fourth sealing block, inject lubricant into the first connecting pipe and the second connecting pipe, and then transport it to the contact surface between the first sealing plate and the second sealing plate through the second connecting pipe.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. Through the structural design of the sealing mechanism, the present invention realizes the function of increasing the sealing effect by designing sealing components on both the left and right sides of the transmission shaft, solving the problem that the existing device only has a sealing component on one side of the transmission shaft. When in use, liquid will accumulate on both sides of the seal, and the transmission shaft usually needs to operate for a long time, resulting in the seal of the existing device being unable to ensure the sealing effect for a long time, and improving the sealing efficiency.

[0022] 2. Through the structural design of the sealing mechanism, the present invention realizes the function of automatically applying a thrust to the sealing plate to ensure that the two sealing plates are in contact with each other, solving the problem that due to the long-term use of the transmission shaft, the sealing plate is extremely prone to wear, and the gap at the position where the sealing plates are in contact will gradually increase, resulting in the sealing plate being unable to play a sealing effect anymore, and improving the sealing effect.

[0023] 3. Through the structural design of the cooling component, the present invention realizes the function of facilitating the cooling of the sealing plate, solving the problem that when the transmission shaft rotates, it will drive one side of the sealing plate to rotate simultaneously. When the sealing plate rotates during the contact process, heat will be generated on the sealing plate. If the surface of the sealing plate is not cooled in time, it is extremely likely to cause damage to the sealing plate during the operation of the bearing, and improving the protection of the sealing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 It is a partial cross-sectional structural schematic diagram of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the first sealing component of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the first cooling component of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the second cooling component of the present invention;

[0030] Figure 6 It is for the Figure 2 enlarged structural schematic diagram at position A in the present invention;

[0031] Figure 7 For the present invention Figure 2 Schematic diagram of the enlarged structure at position B in

[0032] Figure 8 For the present invention Figure 2 Schematic diagram of the enlarged structure at position C in

[0033] Figure 9 Schematic diagram of the structure of the second sealing assembly of the present invention

[0034] Figure 10 Schematic diagram of the method flow of the present invention

[0035] In the figure: 1. Outer main body of the device; 2. Main body of the transmission shaft; 10. First fixed sleeve; 11. Second fixed sleeve; 12. Fixed collar; 13. Movable limit rod; 14. Movable push plate; 15. First return spring; 16. First sealing plate; 17. Second sealing plate; 18. First sealing block; 19. Second sealing block; 20. Third sealing block; 21. Fixed bolt; 22. First connecting pipe; 23. Liquid injection pipe head; 24. Movable push rod; 25. Pressing plate; 26. Second return spring; 27. Fixed plate; 28. Fourth sealing block; 29. Extrusion plate; 30. Fixed thread groove; 31. Sealing slot; 32. Fifth sealing block; 33. Sixth sealing block; 34. Movable guide groove; 35. Second connecting pipe; 36. Connector. Detailed implementation manners

[0036] 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.

[0037] Embodiment 1

[0038] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 9 as shown, an industrial mechanical transmission shaft assembly with an end face sealing assembly and a sealing test method, including an outer main body 1 of the device; a main body 2 of the transmission shaft is arranged at the middle position inside the outer main body 1 of the device, and a sealing mechanism is arranged between the outer main body 1 of the device and the main body 2 of the transmission shaft;

[0039] The sealing mechanism includes a first fixed sleeve 10, which is inserted into the outer main body 1 of the device, and the first fixed sleeve 10 is slidably connected to the outer main body 1. The inner wall of the outer main body 1 is circularly designed. The outer side of the transmission shaft main body 2 is fixedly connected to the inner wall of the second fixed sleeve 11. The transmission shaft main body 2 is designed as a circular rod. Fixed collar rings 12 are also provided at the left and right ends of the outer side of the second fixed sleeve 11, and the outer side of the second fixed sleeve 11 is fixedly connected to the inner wall of the fixed collar ring 12. Multiple moving limit rods 13 are sleeved on the fixed collar ring 12, and the fixed collar ring 12 is slidably connected to the moving limit rods 13. One end of the moving limit rod 13 is fixedly connected to one end of the moving push plate 14. A first return spring 15 is sleeved on the outer side of the moving limit rod 13. One end of the first return spring 15 is fixedly connected to the fixed collar ring 12, and the other end of the first return spring 15 is fixedly connected to one end of the moving push plate 14;

[0040] Further, the other end of the moving push plate 14 is fixedly connected to one end of the first sealing plate 16. Second sealing plates 17 are also provided on the left and right sides of the inner wall of the first fixed sleeve 10, and the inner wall of the first fixed sleeve 10 is fixedly connected to one end of the second sealing plate 17. The other end of the first sealing plate 16 abuts against the other end of the second sealing plate 17. Both the first sealing plate 16 and the second sealing plate 17 are circularly designed;

[0041] Further, the inside at the position above the moving push plate 14 is fixedly connected to the inner wall of the first sealing block 18. The outer side of the first sealing block 18 abuts against the inner wall of the first fixed sleeve 10. The inside at the position below the moving push plate 14 is fixedly connected to the outer side of the fifth sealing block 32. The inner wall of the fifth sealing block 32 abuts against the outer side of the second fixed sleeve 11. Both the first sealing block 18 and the fifth sealing block 32 are designed with rubber materials;

[0042] Further, the outer side of the second sealing block 19 is fixedly connected to the inner wall of the outer main body 1 at the left side position. The inner wall of the second sealing block 19 abuts against the outer side of the first fixed sleeve 10 near the left side. The outer side of the sixth sealing block 33 is fixedly connected to the inner wall of the outer main body 1 at the right position. The inner wall of the sixth sealing block 33 abuts against the outer side of the first fixed sleeve 10 near the right side. Both the second sealing block 19 and the sixth sealing block 33 are designed with rubber materials;

[0043] Further, the right end of the first fixed sleeve 10 is fixedly connected to the left end of the third sealing block 20. A sealing slot 31 is opened on the left side of the outer main body 1. The right end of the third sealing block 20 is inserted into the inside of the sealing slot 31. The third sealing block 20 is designed with rubber materials. Multiple fixing bolts 21 are sleeved on the left end of the first fixed sleeve 10, and the first fixed sleeve 10 is slidably connected to the fixing bolts 21. Multiple fixing threaded grooves 30 are opened on the left side of the outer main body 1. The right end of the fixing bolt 21 is inserted into the inside of the fixing threaded groove 30, and the fixing bolt 21 is threadedly connected to the fixing threaded groove 30;

[0044] During operation, when the main drive shaft 2 starts, it will rotate along the inside of the first fixed sleeve 10. At the same time, the second fixed sleeve 11 fixed to the outside of the main drive shaft 2 is driven by the main drive shaft 2 to rotate. Since the first fixed sleeve 10 is fixed to the position of the outer main body 1 of the device, when the main drive shaft 2 drives the second fixed sleeve 11 to rotate, the first sealing plates 16 at the left and right ends of the outside of the second fixed sleeve 11 will rotate synchronously. At this time, the first sealing plate 16 abuts against the second sealing plate 17 on the inner side of the first fixed sleeve 10. At the same time, as the second fixed sleeve 11 rotates, it drives the first sealing plate 16 to abut against the second sealing plate 17 and rotate. Thus, through the abutting treatment between the first sealing plate 16 and the second sealing plate 17, the sealing effect will be started, ensuring that no liquid can pass through the positions on both sides of the main drive shaft 2. If the first sealing plate 16 wears out after long-term use, since the moving push plate 14 is always pushed by the first return spring 15, the first sealing plate 16 is also pressed against the surface of the second sealing plate 17 by the thrust. Thus, when the first sealing plate 16 wears out due to the long-term operation and rotation of the main drive shaft 2, the first sealing plate 16 always maintains an abutting state with the second sealing plate 17 through the thrust of the first return spring 15. When the moving push plate 14 pushes the first sealing plate 16 to move towards the second sealing plate 17, the first return spring 15 will gradually extend, and at the same time drive the moving limit rod 13 to move along the inside of the fixed collar 12. The other end of the moving limit rod 13 can prevent the moving limit rod 13 from disengaging from the inside of the fixed collar 12, playing a limiting role. At the same time, the first sealing block 18 and the fifth sealing block 32 provided inside the upper and lower ends of the moving push plate 14 abut and seal against the inner wall of the first fixed sleeve 10 and the outside of the second fixed sleeve 11 respectively, thus adding an additional sealing insurance. At the same time, when the moving push plate 14 moves, it also drives the outside of the first sealing block 18 to move along the inner wall of the first fixed sleeve 10, and the fifth sealing block 32 moves on the outside of the second fixed sleeve 11. When the first fixed sleeve 10 is assembled, the right end of the first fixed sleeve 10 needs to be inserted into the inside of the outer main body 1 of the device until the right side of the first fixed sleeve 10 is completely abutted against the left side of the outer main body 1. At this time, the third sealing block 20 on the right side of the first fixed sleeve 10 will be completely inserted into the sealing slot 31, thus starting the sealing effect and preventing liquid from penetrating into the inside of the outer main body 1 through the gap between the outer main body 1 and the first fixed sleeve 10. At the same time, when the right end of the first fixed sleeve 10 is completely inserted into the inside of the outer main body 1, the inner walls of the second sealing block 19 and the sixth sealing block 33 inside the outer main body 1 will completely sleeve the outside of the first fixed sleeve 10. Through the setting of the second sealing block 19 and the sixth sealing block 33, the sealing performance between the outer main body 1 and the first fixed sleeve 10 is increased. Then, rotate the first fixed sleeve 10 until the hole at the left end of the first fixed sleeve 10 is aligned with the fixed thread groove 30.Then insert the fixing bolt 21 into the first fixing sleeve 10 and rotate it until the fixing bolt 21 is completely screwed into the fixing thread groove 30 for fixation, so as to ensure that the first fixing sleeve 10 is more firmly fixed to the outer main body 1 of the device, and at the same time drive the third sealing block 20 to be completely pressed inside the sealing slot 31 to form an efficient seal.

[0045] Embodiment 2

[0046] Please refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 As shown in, as another implementation manner of the present invention for Comparative Example 1, a cooling component is provided between the outer main body 1 of the device and the first fixing sleeve 10. The cooling component includes a second connecting pipe 35. The second connecting pipe 35 is arranged inside the outer main body 1 of the device and the first fixing sleeve 10, and the outer side of the second connecting pipe 35 is also fixedly connected to the inner walls of the outer main body 1 of the device and the first fixing sleeve 10. The top end of the second connecting pipe 35 is fixedly connected to the bottom end of the first connecting pipe 22, and the inside of the second connecting pipe 35 communicates with the inside of the first connecting pipe 22. The outer side of the first connecting pipe 22 is fixedly connected to the inner wall of the outer main body 1 of the device, and the top end of the first connecting pipe 22 is fixedly connected to the bottom end of the connecting head 36;

[0047] Furthermore, the top end of the connecting head 36 is fixedly connected to the bottom end of the liquid injection pipe head 23. A plurality of moving guide grooves 34 are provided at the top end of the liquid injection pipe head 23. A moving push rod 24 is inserted into the moving guide grooves 34, and the moving push rod 24 is slidably connected to the moving guide grooves 34. The top end of the moving push rod 24 is fixedly connected to the bottom end of the pressing plate 25. The moving push rod 24 is designed as a circular rod, and the pressing plate 25 is designed as a circle;

[0048] Furthermore, the bottom end of the moving push rod 24 is fixedly connected to the top end of the fixing plate 27. The top end of the fixing plate 27 is fixedly connected to the bottom end of the pressing plate 29. The fixing plate 27 and the pressing plate 29 are also designed as circles. The top end of the pressing plate 29 is fixedly connected to the bottom end of the fourth sealing block 28. The top end of the fourth sealing block 28 abuts against the inner top end of the liquid injection pipe head 23. The fourth sealing block 28 is designed with a rubber material;

[0049] Furthermore, a second return spring 26 is sleeved on the outer side of the moving push rod 24. The top end of the second return spring 26 is fixedly connected to the inner top end of the liquid injection pipe head 23, and the bottom end of the second return spring 26 is fixedly connected to the top end of the fixing plate 27;

[0050] Furthermore, a sealing test method for an industrial mechanical transmission shaft assembly with an end face sealing component, the sealing test method includes the following steps:

[0051] S1: Start the drive shaft body 2 to rotate at its rated speed, simultaneously drive the first sealing plate 16 to rotate, and the first sealing plate 16 is always in contact with the wear compensation effect of the second sealing plate 17 under the thrust of the first return spring 15, ensuring no leakage in dynamic sealing. At the same time, the contact surface between the first sealing plate 16 and the second sealing plate 17, the contact between the first sealing block 18 and the inner wall of the first fixed sleeve 10, and the contact between the fifth sealing block 32 and the outer side of the second fixed sleeve 11 ensure the sealing performance;

[0052] S2: The fitting part of the third sealing block 20 and the sealing slot 31, and the contact surfaces of the second sealing block 19 and the sixth sealing block 33 with the outer side of the first fixed sleeve 10 are completely sealed to ensure that liquid cannot pass through;

[0053] S3: Press the pressing plate 25 of the liquid injection tube head 23 to open the fourth sealing block 28, inject lubricant into the first connecting tube 22 and the second connecting tube 35, and then transport it to the contact surface between the first sealing plate 16 and the second sealing plate 17 through the second connecting tube 35;

[0054] During operation, first press the pressing plate 25 downward to drive the moving push rod 24 to move downward along the internal moving guide groove 34 opened at the top of the liquid injection tube head 23. And during the downward movement of the moving push rod 24, drive the fixing plate 27 to move downward simultaneously. When the fixing plate 27 moves downward, drive the second return spring 26 to extend downward until the fourth sealing block 28 at the top of the pressing plate 29 driven by the fixing plate 27 disengages from the top inside the liquid injection tube head 23. Then fill the lubricant into the liquid injection tube head 23 from the top of the liquid injection tube head 23. And during the filling process, keep pressing the pressing plate 25 without releasing. Then the lubricating liquid is transported to the inside of the first connecting tube 22 through the connecting head 36. Then the first connecting tube 22 transports the internal lubricating liquid to the inside of the second connecting tube 35. Finally, the second connecting tube 35 transports the lubricating liquid to the outside of the first sealing plate 16 and the second sealing plate 17, so as to cool the first sealing plate 16 and the second sealing plate 17 and at the same time play a lubricating effect. After the filling is completed, release the pressing plate 25. Under the resilience of the second return spring 26, drive the fixing plate 27 to automatically rebound upward. At the same time, the fixing plate 27 drives the pressing plate 29 and the fourth sealing block 28 to move simultaneously until the fourth sealing block 28 at the top of the pressing plate 29 is completely in contact with the top inside the liquid injection tube head 23. And at this time, the liquid injection tube head 23 and the pressing plate 29 are completely sealed, which can prevent the liquid from being transported to the device inside through the liquid injection tube head 23 and play a protective effect.

[0055] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An industrial mechanical transmission shaft assembly with an end face seal assembly, comprising an outer main body (1) of the device; characterized in that: A drive shaft main body (2) is arranged at the middle position inside the outer main body (1) of the device, and a sealing mechanism is arranged between the outer main body (1) of the device and the drive shaft main body (2); The sealing mechanism includes a first fixed sleeve (10). The first fixed sleeve (10) is inserted inside the outer main body (1) of the device, and the first fixed sleeve (10) is slidably connected to the outer main body (1) of the device. The outer side of the drive shaft main body (2) is fixedly connected to the inner wall of a second fixed sleeve (11). Fixed collar rings (12) are also arranged at the left and right ends of the outer side of the second fixed sleeve (11), and the outer side of the second fixed sleeve (11) is fixedly connected to the inner wall of the fixed collar ring (12). A plurality of movable limit rods (13) are sleeved on the fixed collar ring (12), and the fixed collar ring (12) is slidably connected to the movable limit rods (13). One end of the movable limit rod (13) is fixedly connected to one end of a movable push plate (14). A first return spring (15) is sleeved on the outer side of the movable limit rod (13). One end of the first return spring (15) is fixedly connected to the fixed collar ring (12), and the other end of the first return spring (15) is fixedly connected to one end of the movable push plate (14).

2. The industrial mechanical transmission shaft assembly with an end face seal assembly according to claim 1, characterized in that: The other end of the movable push plate (14) is fixedly connected to one end of a first sealing plate (16). Second sealing plates (17) are also arranged on the left and right sides of the inner wall of the first fixed sleeve (10), and the inner wall of the first fixed sleeve (10) is fixedly connected to one end of the second sealing plate (17). The other end of the first sealing plate (16) abuts against the other end of the second sealing plate (17).

3. The industrial mechanical transmission shaft assembly with an end face seal assembly according to claim 2, characterized in that: The inner part at the upper position of the movable push plate (14) is fixedly connected to the inner wall of a first sealing block (18). The outer side of the first sealing block (18) abuts against the inner wall of the first fixed sleeve (10). The outer part at the lower position of the movable push plate (14) is fixedly connected to the outer side of a fifth sealing block (32). The inner wall of the fifth sealing block (32) abuts against the outer side of the second fixed sleeve (11).

4. An industrial mechanical drive shaft assembly with an end face seal assembly according to claim 3, characterized in that: The outer side of a second sealing block (19) is fixedly connected to the left side position of the inner wall of the outer main body (1) of the device. The inner wall of the second sealing block (19) abuts against the outer side of the first fixed sleeve (10) near the left side position. The outer side of a sixth sealing block (33) is fixedly connected to the right side position of the inner wall of the outer main body (1) of the device. The inner wall of the sixth sealing block (33) abuts against the outer side of the first fixed sleeve (10) near the right side position.

5. An industrial mechanical drive shaft assembly with an end face seal assembly according to claim 4, characterized in that: The right end of the first fixed sleeve (10) is fixedly connected to the left end of a third sealing block (20). A sealing slot (31) is formed on the left side of the outer main body (1) of the device. The right end of the third sealing block (20) is inserted inside the sealing slot (31). A plurality of fixing bolts (21) are sleeved on the left end of the first fixed sleeve (10), and the first fixed sleeve (10) is slidably connected to the fixing bolts (21). A plurality of fixing threaded grooves (30) are formed on the left side of the outer main body (1) of the device. The right end of the fixing bolt (21) is inserted inside the fixing threaded groove (30), and the fixing bolt (21) is threadedly connected to the fixing threaded groove (30).

6. An industrial mechanical transmission shaft assembly with an end face sealing component according to claim 5, characterized in that: A cooling component is provided between the outer main body (1) of the device and the first fixed sleeve (10). The cooling component includes a second connecting pipe (35). The second connecting pipe (35) is arranged inside the outer main body (1) of the device and the first fixed sleeve (10), and the outer side of the second connecting pipe (35) is also fixedly connected to the inner walls of the outer main body (1) of the device and the first fixed sleeve (10). The top end of the second connecting pipe (35) is fixedly connected to the bottom end of the first connecting pipe (22), and the inside of the second connecting pipe (35) is in communication with the inside of the first connecting pipe (22). The outer side of the first connecting pipe (22) is fixedly connected to the inner wall of the outer main body (1) of the device, and the top end of the first connecting pipe (22) is fixedly connected to the bottom end of the connecting head (36).

7. An industrial mechanical transmission shaft assembly with an end face seal assembly according to claim 6, characterized in that: The top end of the connecting head (36) is fixedly connected to the bottom end of the liquid injection pipe head (23). A plurality of moving guide grooves (34) are provided at the top end of the liquid injection pipe head (23). A moving push rod (24) is inserted into the moving guide grooves (34), and the moving push rod (24) is slidably connected to the moving guide grooves (34). The top end of the moving push rod (24) is fixedly connected to the bottom end of the pressing plate (25).

8. An industrial mechanical transmission shaft assembly with an end face seal assembly according to claim 7, characterized in that: The bottom end of the moving push rod (24) is fixedly connected to the top end of the fixing plate (27). The top end of the fixing plate (27) is fixedly connected to the bottom end of the pressing plate (29). The top end of the pressing plate (29) is fixedly connected to the bottom end of the fourth sealing block (28). The top end of the fourth sealing block (28) abuts against the inner top end of the liquid injection pipe head (23).

9. The industrial mechanical transmission shaft assembly with an end face sealing component according to claim 8, characterized in that: A second return spring (26) is sleeved outside the moving push rod (24). The top end of the second return spring (26) is fixedly connected to the inner top end of the liquid injection pipe head (23). The bottom end of the second return spring (26) is fixedly connected to the top end of the fixing plate (27).

10. A sealing test method for an industrial mechanical transmission shaft assembly with an end face sealing component, comprising an industrial mechanical transmission shaft assembly with an end face sealing component according to any one of claims 1-9, characterized in that: This sealing test method includes the following steps: S1: Start the main transmission shaft (2) to operate at a rated speed, and at the same time drive the first sealing plate (16) to rotate. The first sealing plate (16) always abuts against the wear compensation effect of the second sealing plate (17) under the thrust of the first return spring (15) to ensure no leakage in dynamic sealing. At the same time, the contact surface between the first sealing plate (16) and the second sealing plate (17), the first sealing block (18) and the inner wall of the first fixed sleeve (10), and the fifth sealing block (32) and the outer side of the second fixed sleeve (11) abut to ensure the sealing performance; S2: The fitting part of the third sealing block (20) and the sealing slot (31), and the contact surfaces of the second sealing block (19) and the sixth sealing block (33) with the outer side of the first fixed sleeve (10) are completely sealed to ensure that liquid cannot pass through; S3: Press the pressing plate (25) of the liquid injection pipe head (23) to open the fourth sealing block (28), inject lubricant into the first connecting pipe (22) and the second connecting pipe (35), and then transport it to the contact surface between the first sealing plate (16) and the second sealing plate (17) through the second connecting pipe (35).

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