High-wear-resistance alloy cast iron drying cylinder

Abstract

The utility model discloses a high wear-resistant alloy cast iron drying cylinder, which relates to the technical field of papermaking equipment, and comprises a cylinder body, a manhole, a cover plate and two cylinder covers, the two cylinder covers are respectively arranged at two ends of the cylinder body, the manhole is arranged on the inner side of the cylinder cover, the cover plate is arranged in the cylinder body, a clamping groove is arranged on the inner side of a clamping seat, and the clamping seat is arranged in the clamping groove. The clamping device is reasonable in design structure, the clamping seat, the clamping groove and the clamping jaw are matched, the clamping seat provides a containing space for the clamping jaw through the clamping groove in the clamping seat, the cover plate receives supporting force of the clamping groove through the clamping jaw, the clamping groove is matched with the clamping jaw, the clamping groove is matched with the clamping jaw, and the clamping jaw is clamped in the clamping groove. And after the cover plate moves the clamping jaws into the clamping grooves, supporting force is provided for the cover plate through the clamping grooves, the stability of the cover plate is kept, the cover plate does not need to be supported by hands all the time, manpower consumption for mounting the cover plate is reduced, and the convenience of mounting the cover plate is improved.

Description

Technical Field

[0001] This utility model relates to the field of papermaking equipment technology, specifically a high wear-resistant alloy cast iron drying cylinder. Background Technology

[0002] The drying cylinder is an important component of a papermaking machine. Its main function is to evaporate the moisture from the paper through steam heating, bringing the paper to the required dryness. This process is crucial for improving the quality and performance of the paper, as the paper's strength, smoothness, and printability are all closely related to its dryness. During the drying process, the drying cylinder can make the paper surface smoother and denser through friction and pressure, thereby improving the paper's gloss and printability. In addition, the drying cylinder can further improve the surface properties of the paper by performing treatments such as calendering. The drying cylinder can also increase paper production efficiency. The high-efficiency drying capacity of the drying cylinder can greatly increase the production speed of the papermaking machine, thereby improving the overall production efficiency of the papermaking line.

[0003] During inspection and maintenance of the drying cylinder, access to the interior is required through a manhole. After inspection and maintenance, the manhole is sealed with a manhole cover to prevent hot air leakage from the drying cylinder. Existing manhole covers are generally fixed using a structure of brackets, bolts, and pressure plates. The manhole cover is placed inside the drying cylinder, and the external pressure plate is fitted onto the bolts. The cylinder cover provides resistance to the pressure plate, and the distance between the manhole cover and the tightening nut is fixed. Although this structure can fix the manhole cover, before the nut is tightened onto the bolt, workers need to pull the bolt outward to prevent the manhole cover from falling into the drying cylinder. Due to the weight of the manhole cover, pulling it outward is labor-intensive, creating significant work pressure for the installation of the manhole cover. Therefore, we provide a high wear-resistant alloy cast iron drying cylinder to solve the above problems. Utility Model Content

[0004] 1) Technical problems to be solved

[0005] This utility model proposes a high wear-resistant alloy cast iron drying cylinder. Through the cooperation between the card seat, card slot and card claw, it solves the problem that it is labor-intensive to pull the bolts outward to prevent the manhole cover from falling into the drying cylinder. Since the manhole cover is heavy, it is very labor-intensive to keep pulling the manhole cover outward.

[0006] (ii) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high wear-resistant alloy cast iron drying cylinder, comprising a cylinder body, a manhole, a cover plate and two cylinder covers, wherein the two cylinder covers are respectively installed at both ends of the cylinder body, and a rotating shaft is connected to one side of each cylinder cover located outside the cylinder body; the manhole is opened on the inner side of the cylinder cover, and the cover plate is located inside the cylinder body.

[0008] The cylinder head is connected to a retaining seat on one side inside the cylinder body. A retaining groove is provided on the inner side of the retaining seat. A retaining claw is connected to the outer surface of the cover plate. The outer surface of the retaining claw contacts the inner wall of the retaining groove. One side of the cover plate contacts the side of the cylinder head inside the cylinder body. A lead screw is connected to one side of the cover plate.

[0009] The cover plate is connected to a support base on one side outside the cylinder body. A positioning groove is provided on the inner side of the support base. A pressure plate is in contact with the inner wall of the positioning groove. A through hole is provided on the inner side of the pressure plate, and a lead screw passes through the through hole. A locking nut is threaded to one end of the lead screw outside the pressure plate. One side of the locking nut is in contact with one side of the pressure plate. A limit mechanism is provided on the outside of the locking nut.

[0010] Furthermore, the limiting mechanism includes a slide block, one side of which is connected to one side of the pressure plate, and a positioning claw is slidably connected to the inner wall of the slide block, the outer surface of which contacts the outer surface of the locking nut.

[0011] Furthermore, the positioning claw has a guide rod connected to one end inside the slide, a sealing cover is connected to one end of the slide, the outer surface of the guide rod is slidably connected to the inner wall of the sealing cover, and a limit block is connected to the end of the guide rod outside the sealing cover.

[0012] Furthermore, a slide rail is provided on the inner side of the slide block, and a retaining groove is also provided on the inner side of the slide block, and the retaining groove is connected to the slide rail. A push plate is rotatably connected to the outer surface of the guide rod, and the outer surface of the push plate slides in contact with the inner wall of the slide rail, and the retaining groove is adapted to the push plate.

[0013] Furthermore, a spring is sleeved on the outside of the guide rod, one end of the spring is connected to one side of the sealing cover, and the other end of the spring is connected to one side of the push plate.

[0014] Furthermore, a sealing groove is provided on the inner side of the cover plate, and a sealing gasket is installed inside the sealing groove. One side of the sealing gasket is in contact with the side of the cylinder head located inside the cylinder body.

[0015] (iii) Beneficial effects:

[0016] Compared with existing technologies, this high wear-resistant alloy cast iron drying cylinder has the following advantages:

[0017] 1. This high wear-resistant alloy cast iron drying cylinder, through the cooperation between the clamping seat, clamping groove and clamping claw, the clamping seat provides a space for the clamping claw through the internal clamping groove, and the cover plate receives the supporting force of the clamping groove through the clamping claw. After the cover plate moves the clamping claw into the clamping groove, the clamping groove provides support for the cover plate and maintains the stability of the cover plate. It does not require the hand to support the cover plate all the time, which reduces the manpower consumption of the cover plate installation and improves the convenience of the cover plate installation.

[0018] Second, this high wear-resistant alloy cast iron drying cylinder, through the cooperation between the positioning claw, spring and slide, the slide provides support force to the positioning claw to maintain the stability of the positioning claw, and the spring provides elastic pushing force to the positioning claw to push the positioning claw to make tight contact with the locking nut, maintain the stability of the locking nut, prevent the locking nut from being vibrated and rotating, and lose support for the cover plate, thereby improving the stability of the cover plate. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the manhole structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the cover plate structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the card holder structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the sealing gasket structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the pressure plate structure of this utility model;

[0026] Figure 7 This is a cross-sectional schematic diagram of the internal structure of the slide block of this utility model.

[0027] In the diagram: 1. Cylinder body; 2. Manhole; 3. Cover plate; 4. Cylinder head; 5. Card holder; 6. Card slot; 7. Card claw; 8. Lead screw; 9. Support seat; 10. Positioning groove; 11. Pressure plate; 12. Through hole; 13. Locking nut; 14. Limiting mechanism; 1401. Slide; 1402. Positioning claw; 1403. Guide rod; 1404. Sealing cover; 1405. Limiting block; 1406. Slide rail; 1407. Stop groove; 1408. Push plate; 1409. Spring; 15. Sealing groove; 16. Sealing gasket; 17. Rotating shaft. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figure 1-7 As shown, this utility model provides a technical solution: a high wear-resistant alloy cast iron drying cylinder, including a cylinder body 1, a manhole 2, a cover plate 3 and two cylinder covers 4. The two cylinder covers 4 are respectively installed at both ends of the cylinder body 1. The two cylinder covers 4 are connected to a rotating shaft 17 on the side of the cylinder body 1 outside the cylinder body 1. The manhole 2 is opened on the inner side of the cylinder cover 4. The cover plate 3 is located inside the cylinder body 1 and is connected to external equipment through the rotating shaft 17 to provide rotational support for the cylinder body 1. The manhole 2 is used for workers to enter and exit the cylinder body 1.

[0030] The cylinder head 4 is connected to a retainer 5 on one side inside the cylinder body 1. A retainer groove 6 is provided on the inner side of the retainer 5. A retainer 7 is connected to the outer surface of the cover plate 3. The outer surface of the retainer 7 contacts the inner wall of the retainer groove 6. One side of the cover plate 3 contacts the side of the cylinder head 4 inside the cylinder body 1. A lead screw 8 is connected to one side of the cover plate 3. The retainer 7 is wrapped by the retainer groove 6 inside the retainer 5. The cover plate 3 receives the supporting force of the retainer groove 6 through the retainer 7. The retainer groove 6 is open at the top. The retainer 7 enters the retainer groove 6 through the opening at the top of the retainer groove 6.

[0031] The cover plate 3 is connected to a support base 9 on one side outside the cylinder body 1. A positioning groove 10 is provided on the inner side of the support base 9. A pressure plate 11 is in contact with the inner wall of the positioning groove 10. A through hole 12 is provided on the inner side of the pressure plate 11, and the screw rod 8 passes through the through hole 12. A locking nut 13 is threaded to one end of the screw rod 8 outside the pressure plate 11. One side of the locking nut 13 is in contact with one side of the pressure plate 11. The positioning groove 10 inside the support base 9 forms a semi-enclosure on the pressure plate 11 to prevent the pressure plate 11 from moving and to facilitate the rotation of the locking nut 13. By rotating the locking nut 13, the screw rod 8 is moved. While the screw rod 8 is moving, it drives the cover plate 3 to contact the cylinder head 4 tightly.

[0032] A limiting mechanism 14 is provided on the outside of the locking nut 13 to maintain the stability of the locking nut 13 and prevent the locking nut 13 from loosening and losing support for the cover plate 3 under external force. The limiting mechanism 14 includes a slide 1401, one side of which is connected to one side of the pressure plate 11. A positioning claw 1402 is slidably connected to the inner wall of the slide 1401. The outer surface of the positioning claw 1402 is in contact with the outer surface of the locking nut 13. After the locking nut 13 has rotated, the positioning claw 1402 forms a wrap around the locking nut 13, providing resistance to the locking nut 13 and restricting its rotation.

[0033] The positioning claw 1402 is located inside the slide 1401, with one end connected to a guide rod 1403. The slide 1401 is connected to a sealing cover 1404. The outer surface of the guide rod 1403 is slidably connected to the inner wall of the sealing cover 1404. The guide rod 1403 is located outside the sealing cover 1404, with a limit block 1405 connected to it. The guide rod 1403 provides support for the positioning claw 1402 and the spring 1409, maintaining the stability of the spring 1409 during elastic contraction. The guide rod 1403 also provides guidance for the positioning claw 1402, maintaining the stability of the positioning claw 1402 when it moves.

[0034] A slide rail 1406 is provided on the inner side of the slide block 1401, and a retaining groove 1407 is also provided on the inner side of the slide block 1401, with the retaining groove 1407 communicating with the slide rail 1406. A push plate 1408 is rotatably connected to the outer surface of the guide rod 1403. The outer surface of the push plate 1408 slides in contact with the inner wall of the slide rail 1406, and the retaining groove 1407 is adapted to the push plate 1408. The push plate 1408 drives the guide rod 1403 to move, and the movement of the guide rod 1403 drives the positioning claw 1402 to move, causing the positioning claw 1402 to disengage from the locking nut 13, releasing the restriction on the locking nut 13. While the push plate 1408 moves, the spring 1409 is compressed. The compressed spring 1409 provides power for the positioning claw 1402 to reset. After the push plate 1408 moves, it rotates to change its position and enters the stop groove 1407. The stop groove 1407 restricts the movement of the push plate 1408. The guide rod 1403 is sleeved with a spring 1409. One end of the spring 1409 is connected to one side of the sealing cover 1404, and the other end of the spring 1409 is connected to one side of the push plate 1408. The spring 1409 provides elastic pushing force to the positioning claw 1402, pushing the positioning claw 1402 to contact the locking nut 13 tightly.

[0035] A sealing groove 15 is provided on the inner side of the cover plate 3. A sealing gasket 16 is installed inside the sealing groove 15. One side of the sealing gasket 16 is in contact with the side of the cylinder head 4 located inside the cylinder body 1. The sealing groove 15 wraps around the sealing gasket 16 to prevent the sealing gasket 16 from moving and to maintain the stability of the sealing gasket 16.

[0036] Working principle: In use, first lift the cover plate 3 with the lead screw 8 and adjust the angle of the cover plate 3 to put it into the cylinder 1. Then move the cover plate 3 to position the claw 7 above the slot 6. Then move the cover plate 3 down to let the claw 7 fall into the slot 6, and the lead screw 8 can be released. Then align the through hole 12 on the pressure plate 11 with the lead screw 8 and put it on the outside. Then push the pressure plate 11 into the positioning groove 10 and tighten the locking nut 13. Then push the push plate 1408 out from the stop groove 1407. After the push plate 1408 loses resistance, the spring 1409 pushes the push plate 1408 to drive the guide rod 1403 to move. The guide rod 1403 pushes the positioning claw 1402 to contact the locking nut 13, restricting the rotation of the locking nut 13.

[0037] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A high wear-resistant alloy cast iron drying cylinder, comprising a cylinder body (1), a manhole (2), a cover plate (3), and two cylinder covers (4), characterized in that: The two cylinder heads (4) are respectively installed at both ends of the cylinder body (1). The two cylinder heads (4) are connected to a rotating shaft (17) on the side of the cylinder body (1) outside the cylinder body (1). The manhole (2) is opened on the inside of the cylinder head (4). The cover plate (3) is located inside the cylinder body (1). The cylinder head (4) is connected to a retainer (5) on one side inside the cylinder body (1). The retainer (5) has a retaining groove (6) on its inner side. The outer surface of the cover plate (3) is connected to a claw (7). The outer surface of the claw (7) is in contact with the inner wall of the retaining groove (6). One side of the cover plate (3) is in contact with the side of the cylinder head (4) inside the cylinder body (1). One side of the cover plate (3) is connected to a lead screw (8). The cover plate (3) is connected to a support base (9) on the side outside the cylinder body (1). The support base (9) has a positioning groove (10) on its inner side. The inner wall of the positioning groove (10) is in contact with a pressure plate (11). The pressure plate (11) has a through hole (12) on its inner side, and a screw rod (8) passes through the through hole (12). The end of the screw rod (8) located outside the pressure plate (11) is threaded with a locking nut (13). One side of the locking nut (13) is in contact with one side of the pressure plate (11). A limit mechanism (14) is provided on the outside of the locking nut (13).

2. The high wear-resistant alloy cast iron drying cylinder according to claim 1, characterized in that: The limiting mechanism (14) includes a slide (1401), one side of which is connected to one side of the pressure plate (11). A positioning claw (1402) is slidably connected to the inner wall of the slide (1401), and the outer surface of the positioning claw (1402) is in contact with the outer surface of the locking nut (13).

3. The high wear-resistant alloy cast iron drying cylinder according to claim 2, characterized in that: The positioning claw (1402) is connected to a guide rod (1403) at one end inside the slide (1401), and a sealing cover (1404) is connected to one end of the slide (1401). The outer surface of the guide rod (1403) is slidably connected to the inner wall of the sealing cover (1404), and a limit block (1405) is connected to the end of the guide rod (1403) outside the sealing cover (1404).

4. The high wear-resistant alloy cast iron drying cylinder according to claim 3, characterized in that: The inner side of the slide block (1401) is provided with a slide rail (1406), and the inner side of the slide block (1401) is also provided with a retaining groove (1407), and the retaining groove (1407) is connected to the slide rail (1406). The outer surface of the guide rod (1403) is rotatably connected to a push plate (1408). The outer surface of the push plate (1408) slides in contact with the inner wall of the slide rail (1406), and the retaining groove (1407) is adapted to the push plate (1408).

5. A high wear-resistant alloy cast iron drying cylinder according to claim 4, characterized in that: A spring (1409) is sleeved on the outside of the guide rod (1403). One end of the spring (1409) is connected to one side of the sealing cover (1404), and the other end of the spring (1409) is connected to one side of the push plate (1408).

6. The high wear-resistant alloy cast iron drying cylinder according to claim 1, characterized in that: The cover plate (3) has a sealing groove (15) on its inner side. A sealing gasket (16) is installed inside the sealing groove (15). One side of the sealing gasket (16) is in contact with the side of the cylinder head (4) located inside the cylinder body (1).

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