An improved round damper with flexible rotation

Abstract

The utility model provides an improved circular damper that can rotate flexibly. The improved circular damper that can rotate flexibly comprises: the connecting ring is fixedly connected to the inner surface of the door body, the inner surface of the connecting ring is provided with a ceramic lining, the outer surface of the door body is provided with a ceramic outer ring installed at the bottom, the inner surface of the ceramic outer ring is provided with a first main shaft through a first graphite sealing filler, the outer surface of the first main shaft is provided with a main shaft ceramic ring, the filler ring is installed on the outer surface of the door body at the top, and the bottom end of the filler ring is provided with a retaining ring. The improved circular damper that can rotate flexibly provided by the utility model solves the problem of easy wear and fracture of the root of the damper main shaft through the structure, protects the main shaft from erosion and wear, solves the problems of shaft jamming and fracture, ensures that the circular damper has small running resistance, no jamming, and flexible rotation, extends the service life of the damper and the flexibility of switching, and ensures safe and stable operation of the equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of round air doors, in particular to an improved round air door with flexible rotation. Background Art

[0002] Circular dampers are also called circular baffle doors, circular shut-off doors, and circular regulating doors. Circular dampers are mainly used in air ducts and flues of power plants to intercept or adjust medium flow. They can also be used in air ducts and flues in other industries.

[0003] The boilers in thermal power generation are HG-420 / 13.7-YM3 ultra-high pressure, coal-fired, single reheat, natural circulation pulverized coal boilers. Each boiler is equipped with 2 sets of intermediate storage-type pulverizing systems. The tertiary air duct specifications are Φ530×5mm, the tertiary air door is Dg500mm circular air door, the No. 1 boiler A recirculation door is Dg600mm circular air door, and the other 3 are Dg700mm circular air doors.

[0004] However, after being used for a period of time, the traditional circular air valve will experience certain wear and tear, which will cause the circular air valve to leak frequently and reduce the reliability of equipment operation.

[0005] Therefore, it is necessary to provide an improved round damper that can rotate flexibly to solve the above-mentioned technical problems. Utility Model Content

[0006] The utility model provides an improved circular air door with flexible rotation, which solves the problem that the traditional circular air door will frequently leak after being used for a period of time, and reduces the problem of reliable operation of the equipment.

[0007] In order to solve the above technical problems, the utility model provides an improved rotatable round air door comprising: a door body;

[0008] A connecting ring, the connecting ring is fixedly connected to the inner surface of the door body, the inner surface of the connecting ring is provided with a ceramic lining, the outer surface of the door body is provided with a ceramic outer ring at the bottom, the inner surface of the ceramic outer ring is provided with a first spindle through a first graphite sealing filler, and the outer surface of the first spindle is provided with a spindle ceramic ring;

[0009] A packing ring, the packing ring is installed on the outer surface of the door body at the top position, a clamp ring is installed on the bottom end of the packing ring, a limit ring is arranged on the bottom end of the clamp ring, a second main shaft is installed on the inner surface of the packing ring through a second graphite sealing packing, a packing gland is arranged on the outer surface of the second main shaft, and a rib plate is arranged on the outer surface of the door body at the top position;

[0010] The spindle ceramic ring is sleeved on the outer surface of the first spindle, and the spindle ceramic ring is in contact with the top of the ceramic outer ring. For details, refer to Figure 2The clamping ring and the limit ring are both stuck in the bayonet position, and the materials are all ceramic. The packing gland is inserted into the inner surface of the packing ring and is located at the top position. The main shaft ceramic ring wraps the main shaft, the ceramic ring outer ring and the ceramic inner ring are consistent. The other components and connection relationships are the same as the specific implementation method one. The second graphite sealing packing is installed in the circular air door packing ring and arranged in a staggered manner. The packing is compressed by the packing gland, and at the same time, the main door shaft is not stuck when rotating. There is no noise and wear resistance during the switching process, and the lining ceramic is guaranteed to be free of wear. The other components and connection relationships are the same as the specific implementation method one.

[0011] Preferably, the outer surfaces of the first main shaft and the second main shaft are both provided with openings, and the top of the rib plate is provided with a through hole;

[0012] The opening is located at one end of the first main shaft adjacent to the outer surface of the second main shaft.

[0013] Preferably, a sealing cover is installed at the bottom end of the ceramic outer ring, and holes are opened at the bottom and top of the outer surface of the door body;

[0014] The opening for installing the ceramic outer ring and the packing ring is arranged on the door body and penetrates the door body, the connecting ring and the lining ceramic.

[0015] Preferably, the top of the rib plate is threadedly connected to a threaded rod near both sides, and the bottom end of the threaded rod is rotatably connected to a contact ring via a rotating ring;

[0016] The bottom end of the contact ring contacts the top end of the packing gland.

[0017] Preferably, the top ends of the threaded rods are fixedly connected with rotating buckles, and the top ends of the rotating buckles are rotatably connected with adjusting bolts through rotating blocks;

[0018] The diameter of the adjusting bolt is the same as the diameter of the threaded rod.

[0019] Preferably, two buckles are installed on the top of the rib plate, and support springs are installed on the front and back sides of the inner wall of the buckle through fixing plates, and the other end of each support spring is fixedly connected to the clamping plate through a connecting plate;

[0020] A set of two clamping plates can clamp the adjusting bolt inserted into the buckle.

[0021] Compared with the related art, the improved rotatable round damper provided by the utility model has the following advantages:

[0022] Beneficial effects:

[0023] The utility model provides an improved circular damper with flexible rotation. In order to reduce the wear of the circular damper during use and increase the stability of the equipment during operation, a lining ceramic is first installed on the inner surface of the door body through a connecting ring, and a ceramic outer ring is installed on the outer surface of the door body at the bottom, and a first main shaft is installed inside the ceramic outer ring through a first graphite sealing filler, and the main shaft ceramic ring is sleeved on the outer surface of the first main shaft, and the main shaft ceramic ring is contacted with the ceramic outer ring at the same time, and then the filler ring is installed on the outer surface of the door body at the top position through a limiting ring and a clamping ring, and a second graphite sealing filler is placed inside the filler ring, and then covered with a filler gland. The structure solves the problem of easy wear and breakage of the damper main shaft root, protects the main shaft from erosion and wear, solves the problems of shaft jamming and breakage, ensures that the circular damper has small running resistance, no jamming, and flexible rotation, extends the service life of the damper and the switching flexibility, and ensures safe and stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of a first embodiment of an improved rotatable round damper provided by the utility model;

[0025] Figure 2 Provide a structural schematic diagram of the door body for the utility model;

[0026] Figure 3 Provided for the utility model Figure 2 An enlarged view of point A is shown;

[0027] Figure 4 A schematic structural diagram of a second embodiment of the improved rotatable round damper provided by the utility model;

[0028] Figure 5 Provided for the utility model Figure 4 An enlarged view of point B is shown;

[0029] Figure 6 The utility model provides a structural schematic diagram of a support spring.

[0030] Numbers in the figure: 1. Ceramic lining, 2. Connecting ring, 3. Sealing cover, 4. Ceramic outer ring, 5. Door body, 6. Spindle ceramic ring, 7. First spindle, 8. Opening, 9. Rib, 10. Perforation, 11. First graphite sealing packing, 12. Second graphite sealing packing, 13. Retaining ring, 14. Limiting ring, 15. Packing ring, 16. Packing gland, 17. Second spindle, 18. Buckle, 19. Adjusting bolt, 20. Rotating block, 21. Rotating buckle, 22. Threaded rod, 23. Contact ring, 24. Rotating ring, 25. Fixed plate, 26. Card plate, 27. Connecting plate, 28. Support spring. DETAILED DESCRIPTION

[0031] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0032] Please refer to Figure 1 , Figure 2 , Figure 3 ,in, Figure 1 A schematic structural diagram of a first embodiment of an improved rotatable round damper provided by the utility model; Figure 2 Provide a structural schematic diagram of the door body for the utility model; Figure 3 Provided for the utility model Figure 2 The enlarged view of point A is shown. The improved rotatable round damper comprises: a door body 5;

[0033] A connecting ring 2, the connecting ring 2 is fixedly connected to the inner surface of the door body 5, the inner surface of the connecting ring 2 is provided with a lining ceramic 1, the outer surface of the door body 5 is provided with a ceramic outer ring 4 at the bottom, the inner surface of the ceramic outer ring 4 is provided with a first spindle 7 via a first graphite sealing filler 11, and the outer surface of the first spindle 7 is provided with a spindle ceramic ring 6;

[0034] A packing ring 15, the packing ring 15 is installed on the outer surface of the door body 5 at the top position, a clamping ring 13 is installed on the bottom end of the packing ring 15, a limiting ring 14 is arranged on the bottom end of the clamping ring 13, a second main shaft 17 is installed on the inner surface of the packing ring 15 through a second graphite sealing packing 12, a packing gland 16 is arranged on the outer surface of the second main shaft 17, and a rib plate 9 is arranged on the outer surface of the door body 5 at the top position;

[0035] The spindle ceramic ring 6 is sleeved on the outer surface of the first spindle 7, and the spindle ceramic ring 6 is in contact with the top of the ceramic outer ring 4. Figure 2 The clamping ring 13 and the limiting ring 14 are both clamped in the bayonet position, and the materials are both ceramic. The packing gland 16 is inserted into the inner surface of the packing ring 15 and is located at the top position. The rib plate 9 covers the structure on the packing ring 15.

[0036] The outer surfaces of the first main shaft 7 and the second main shaft 17 are both provided with openings 8, and the top of the rib plate 9 is provided with a through hole 10;

[0037] The opening 8 is located at one end adjacent to the outer surface of the first main shaft 7 and the second main shaft 17 .

[0038] A sealing cover 3 is installed at the bottom end of the ceramic outer ring 4, and holes are opened at the bottom and top of the outer surface of the door body 5;

[0039] The openings on the door body 5 for installing the ceramic outer ring 4 and the packing ring 15 penetrate the door body 5 , the connecting ring 2 and the lining ceramic 1 .

[0040] The working principle of the improved rotatable round damper provided by the utility model is as follows:

[0041] First, a lining ceramic 1 is installed on the inner surface of the door body 5 through a connecting ring 2, and a ceramic outer ring 4 is installed on the outer surface of the door body 5 at the bottom position, and a first main shaft 7 is installed inside the ceramic outer ring 4 through a first graphite sealing filler 11, and the main shaft ceramic ring 6 is sleeved on the outer surface of the first main shaft 7, and the main shaft ceramic ring 6 and the ceramic outer ring 4 are in contact with each other, and then a packing ring 15 is installed on the outer surface of the door body 5 at the top position through a limiting ring 14 and a retaining ring 13, and a second graphite sealing filler 12 is placed inside the packing ring 15, and then covered with a packing gland 16.

[0042] Compared with the related art, the improved rotatable round damper provided by the utility model has the following advantages:

[0043] Beneficial effects:

[0044] In order to reduce the wear of the circular damper during use and increase the stability of the equipment during operation, a lining ceramic 1 is first installed on the inner surface of the door body 5 through a connecting ring 2, and a ceramic outer ring 4 is installed on the outer surface of the door body 5 at the bottom, and a first main shaft 7 is installed inside the ceramic outer ring 4 through a first graphite sealing filler 11, and the main shaft ceramic ring 6 is sleeved on the outer surface of the first main shaft 7, and the main shaft ceramic ring 6 is in contact with the ceramic outer ring 4, and then a packing ring 15 is installed on the outer surface of the door body 5 at the top through a limiting ring 14 and a retaining ring 13, and a second graphite sealing filler 12 is placed inside the packing ring 15, and then covered with a packing gland 16. This structure solves the problem of easy wear and breakage of the damper main shaft root, protects the main shaft from erosion and wear, solves the problems of shaft jamming and breakage, ensures that the circular damper has low running resistance, no jamming, and flexible rotation, extends the service life of the damper and the switching flexibility, and ensures safe and stable operation of the equipment.

[0045] Second embodiment

[0046] Please refer to Figure 4-Figure 5 - Figure 6 , Figure 4 A schematic structural diagram of a second embodiment of the improved rotatable round damper provided by the utility model; Figure 5 Provided for the utility model Figure 4 An enlarged view of point B is shown; Figure 6 The utility model provides a structural schematic diagram of a support spring. Based on the improved rotatable round damper provided in the first embodiment of the present application, the second embodiment of the present application provides another improved rotatable round damper. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0047] Specifically, the improved rotatable round damper provided in the second embodiment of the present application is different in that the top of the rib plate 9 near both sides is threadedly connected with a threaded rod 22, and the bottom end of the threaded rod 22 is rotatably connected with a contact ring 23 through a rotating ring 24;

[0048] The bottom end of the contact ring 23 contacts the top end of the packing gland 16 , and the threaded rod 22 is threadedly penetrates the top of the rib plate 9 .

[0049] The top ends of the threaded rods 22 are fixedly connected with rotating buckles 21, and the top ends of the rotating buckles 21 are rotatably connected with adjusting bolts 19 through rotating blocks 20;

[0050] The diameter of the adjusting bolt 19 is the same as the diameter of the threaded rod 22, and the rotating buckle 21 is convenient for folding the adjusting bolt 19.

[0051] Two buckles 18 are installed on the top of the rib plate 9, and support springs 28 are installed on the front and back of the inner wall of the buckle 18 through a fixing plate 25, and the other end of each support spring 28 is fixedly connected to a clamping plate 26 through a connecting plate 27;

[0052] The two clamping plates 26 are a group that can clamp the adjusting bolt 19 inserted into the buckle 18, and the top of the buckle 18 is provided with a hole for the adjusting bolt 19 to be inserted.

[0053] Compared with the related art, the improved rotatable round damper provided by the utility model has the following advantages:

[0054] Beneficial effects:

[0055] In order to increase the stability of the connection between the packing ring 15 and the packing gland 16, two threaded rods 22 are threadedly connected at the top of the rib plate, and a foldable adjusting bolt 19 is installed at the top of the threaded rod 22 through a rotating buckle 21 and a rotating block 20, and a contact ring 23 is installed at the bottom of the two threaded rods 22 through a rotating ring 24. In actual use, the position of the threaded rod 22 is adjusted by adjusting the bolt 19, thereby adjusting the height of the contact ring 23, and utilizing the contact between the contact ring 23 and the top of the packing gland 16 to increase the stability of the connection between the packing gland 16 and the packing ring 15. After the adjusting bolt 19 is adjusted, it only needs to be folded up by the rotating buckle 21, and the adjusting bolt 19 is inserted into the inside of the buckle 18 to avoid the shaking of the threaded rod 22. Through this structure, the stability of the connection between the packing gland 16 and the packing ring 15 can be adjusted as needed, thereby ensuring the stability of the operation of the second main shaft 17.

[0056] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An improved round damper with flexible rotation, characterized in that: include: Door body; A connecting ring, the connecting ring is fixedly connected to the inner surface of the door body, the inner surface of the connecting ring is provided with a ceramic lining, the outer surface of the door body is provided with a ceramic outer ring at the bottom, the inner surface of the ceramic outer ring is provided with a first spindle through a first graphite sealing filler, and the outer surface of the first spindle is provided with a spindle ceramic ring; A packing ring is installed on the outer surface of the door body at the top position, a retaining ring is installed at the bottom end of the packing ring, a limiting ring is arranged at the bottom end of the retaining ring, a second main shaft is installed on the inner surface of the packing ring through a second graphite sealing packing, a packing gland is arranged on the outer surface of the second main shaft, and a rib plate is arranged on the outer surface of the door body at the top position.

2. The improved rotatable round damper according to claim 1, characterized in that: The outer surfaces of the first main shaft and the second main shaft are both provided with openings, and the top of the rib plate is provided with a through hole.

3. The improved rotatable round damper according to claim 1, characterized in that: A sealing cover is installed at the bottom end of the ceramic outer ring, and holes are opened at the bottom and top of the outer surface of the door body.

4. The improved rotatable round damper according to claim 1, characterized in that: The top of the rib plate is threadedly connected to a threaded rod at positions near both sides, and the bottom end of the threaded rod is rotatably connected to a contact ring via a rotating ring.

5. The improved rotatable round damper according to claim 4, characterized in that: The top ends of the threaded rods are fixedly connected with rotating buckles, and the top ends of the rotating buckles are rotatably connected with adjusting bolts through rotating blocks.

6. The improved rotatable round damper according to claim 1, characterized in that: Two buckles are installed on the top of the rib plate, and support springs are installed on the front and back sides of the inner wall of the buckle through fixing plates, and the other end of each support spring is fixedly connected to the clamping plate through a connecting plate.

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