A sealing end cover for a gearbox of a screw conveyor

Abstract

This utility model discloses a sealing end cover for a gearbox of a screw conveyor, including a cover body and a gearbox. The cover body is disposed at one end of the gearbox. A pressure plate II is disposed on one side of the cover body, and a screw II is fixed to the upper and lower ends of one side of the pressure plate II. A connecting flange is disposed on the edge of one end of the gearbox, and a threaded sleeve II is threadedly engaged with the upper and lower ends of one side of the connecting flange, and the threaded sleeve II is threadedly engaged with the screw II. A pressure plate I is disposed on the other side of the cover body, and a screw I is fixed to the upper and lower ends of one side of the pressure plate I. A cap is disposed on one side of the pressure plate I, and a threaded sleeve I is rotatably connected to the upper and lower ends of one side of the cap, and the threaded sleeve I is threadedly engaged with the screw I. An output shaft is disposed at one end of the gearbox. This utility model is easy to disassemble, assemble, and maintain, and has good stability.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, specifically a sealing end cover for a gearbox used in screw conveyors. Background Technology

[0002] When a screw conveyor is working, the motor drives the screw shaft to rotate in a specified direction through the gearbox, conveying powdery materials from a lower to a higher position. Depending on the working conditions, screw conveyors may operate continuously for long periods or intermittently with frequent starts and stops. Furthermore, the quality of the powder is difficult to maintain consistently due to factors such as temperature and humidity, and sometimes the presence of impurities such as lumps, iron blocks, and steel wires. Therefore, the working conditions of screw conveyors are quite harsh. The sealing quality of the gearbox output shaft, which is in direct contact with the material and undergoes rotational motion, is particularly important. The quality of the sealing end cap structure directly determines the quality of the screw conveyor. Statistics show that 50% of screw conveyor failures are currently caused by seal failure.

[0003] The existing gearbox sealing end cover has some drawbacks: First, during long-term use, it is necessary to replace the sealing components and maintain the internal structure of the sealing end cover, which is not easy to disassemble and maintain, and consumes labor; second, the stability is not good, which affects the performance. Utility Model Content

[0004] The purpose of this utility model is to provide a sealing end cover for a gearbox of a screw conveyor, so as to solve the problems of being difficult to disassemble and maintain and having poor stability mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing end cover for a gearbox of a screw conveyor, comprising a cover body and a gearbox. The cover body is disposed at one end of the gearbox. A pressure plate II is disposed on one side of the cover body, and a screw II is fixed to the upper and lower ends of one side of the pressure plate II. A connecting flange is disposed on the edge of one end of the gearbox, and a threaded sleeve II is threadedly fitted to the upper and lower ends of one side of the connecting flange, and the threaded sleeve II is threadedly fitted to the screw II. A pressure plate I is disposed on the other side of the cover body, and a screw I is fixed to the upper and lower ends of one side of the pressure plate I. A cap is disposed on one side of the pressure plate I. Furthermore, threaded sleeves are rotatably connected to the upper and lower ends of one side of the cap, and threaded sleeves are threadedly engaged with screws. The cap is passed through the output shaft, and screws are then inserted into the connecting flanges. By turning threaded sleeves, screws are locked onto screws, allowing the cap to be installed on the connecting flange. Then, the cap is passed through the output shaft, and screws are exposed above the cap. Threaded sleeves are turned to lock screws onto screws, allowing the cap to be installed on the cap. This completes the installation of the sealing cap, facilitating the disassembly and assembly of the cap. When the Teflon seal or felt seal is worn to a certain extent, the cap can be easily removed, greatly improving the convenience of maintenance.

[0006] As a further technical solution of this utility model, a felt seal is provided inside the cover body, and a Teflon seal is provided on one side of the felt seal. The felt seal and the Teflon seal work together to improve the sealing and wear resistance of the gearbox.

[0007] As a further technical solution of this utility model, one end of the gearbox is provided with an output shaft, and both the upper and lower ends of the output shaft are provided with locking blocks.

[0008] As a further technical solution of this utility model, a sealing ring one is provided on one side of the cap, and a sealing ring two is provided on one side of the connecting flange. The sealing ring one and the sealing ring two cooperate with each other to improve the sealing effect on the gearbox.

[0009] As a further technical solution of this utility model, a slot is provided on one side of the felt ash seal corresponding to the card block, and the slot engages with the card block. During the high-speed rotation of the output shaft, the card block maintains a stable axial position and does not move, which can play the role of fixing the felt ash seal.

[0010] As a further technical solution of this utility model, slot 2 is provided at the upper and lower ends of the other side of the felt ash seal, and slot 1 is provided at the upper and lower ends of one side of the Teflon ash seal.

[0011] As a further technical solution of this utility model, the upper and lower ends of the other side of the cap are fixed with insert blocks, and the insert blocks are engaged with slot one and slot two. Inserting the insert blocks into slot two and slot one limits the position of the Teflon ash seal and the felt ash seal, thereby improving the stability of the Teflon ash seal and the felt ash seal.

[0012] As a further technical solution of this utility model, guide rods are fixed at equal intervals on one side edge of the pressure plate two, and guide blocks are provided at equal intervals on the other side edge of the connecting flange. The guide blocks are engaged with the guide rods. The connecting flange limits the guide rods through the guide blocks, which also effectively prevents the pressure plate two from shaking during rotation and enhances the connection stability between the pressure plate two and the connecting flange.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By passing the cover through the output shaft and inserting the second screw into the connecting flange, and then tightening the second threaded sleeve to lock the second threaded sleeve onto the second screw, the cover is installed on the connecting flange. Next, the cap is passed through the output shaft, and the first screw is exposed from the cap. The first threaded sleeve is tightened to lock the first threaded sleeve onto the first screw, thus installing the cap on the cover. This completes the installation of the sealing cover, which facilitates the disassembly and assembly of the cover. When the Teflon seal or felt seal is worn to a certain extent, the cover can be easily removed, greatly improving the convenience of maintenance and making it easy to disassemble and maintain.

[0015] By using the connecting flange and guide block, the guide rod is limited, which effectively prevents the pressure plate two from shaking during rotation and enhances the connection stability between the pressure plate two and the connecting flange. At the same time, inserting the plug into slot two and slot one limits the position of the Teflon seal and felt seal, improving the stability of the Teflon seal and felt seal. Furthermore, the plug maintains a stable axial position during the high-speed rotation of the output shaft, which can fix the felt seal and provide good stability. Attached Figure Description

[0016] Figure 1 This is a frontal sectional view of the present invention.

[0017] Figure 2 This is a front view structural diagram of the present utility model;

[0018] Figure 3 This is a cross-sectional front view of the cover body of this utility model;

[0019] Figure 4 This is a schematic diagram of the gearbox and output shaft structure of this utility model.

[0020] Figure 5 This is a cross-sectional front view of the cap structure of this utility model.

[0021] In the diagram: 1. Sealing ring one; 2. Threaded sleeve one; 3. Screw one; 4. Cap; 5. Pressure plate two; 6. Screw two; 7. Threaded sleeve two; 8. Connecting flange; 9. Gearbox; 10. Sealing ring two; 11. Clamping block; 12. Felt seal; 13. Teflon seal; 14. Output shaft; 15. Cover; 16. Guide rod; 17. Guide block; 18. Slot; 19. Slot two; 20. Slot one; 21. Pressure plate one; 22. Insert block. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-5An embodiment of this utility model provides: a sealing end cover for a gearbox of a screw conveyor, including a cover body 15 and a gearbox 9. The cover body 15 is disposed at one end of the gearbox 9. A pressure plate 2 5 is disposed on one side of the cover body 15, and a screw 2 6 is fixed at the upper and lower ends of one side of the pressure plate 2 5. A connecting flange 8 is disposed on the edge of one end of the gearbox 9, and a threaded sleeve 2 7 is threadedly fitted at the upper and lower ends of one side of the connecting flange 8, and the threaded sleeve 2 7 is threadedly fitted with the screw 2 6. A pressure plate 1 21 is disposed on the other side of the cover body 15, and a screw 1 3 is fixed at the upper and lower ends of one side of the pressure plate 1 21. A cap 4 is disposed on one side of the pressure plate 1 21, and a threaded sleeve 1 2 is rotatably connected at the upper and lower ends of one side of the cap 4, and the threaded sleeve 1 2 is threadedly fitted with the screw 1 3.

[0024] Specifically, such as Figure 1 and Figure 2 As shown, the cover 15 is passed through the output shaft 14, and the screw 6 is inserted into the connecting flange 8. The threaded sleeve 7 is turned to lock the screw 6, so that the cover 15 is installed on the connecting flange 8. Then, the cap 4 is passed through the output shaft 14, and the screw 3 is exposed out of the cap 4. The threaded sleeve 2 is turned to lock the screw 3, so that the cap 4 is installed on the cover 15. This completes the installation of the sealing cover, which facilitates the disassembly and assembly of the cover 15. When the Teflon seal 13 or the felt seal 12 is worn to a certain extent, the cover 15 can be easily removed, greatly improving the convenience of maintenance.

[0025] The inside of the cover 15 is provided with a felt seal 12, and a Teflon seal 13 is provided on one side of the felt seal 12.

[0026] Specifically, such as Figure 1 and Figure 3 As shown, the felt sealant 12 and the Teflon sealant 13 work together to improve the sealing and wear resistance of the gearbox 9.

[0027] A sealing ring 1 is provided on one side of the cap 4, and a sealing ring 2 10 is provided on one side of the connecting flange 8;

[0028] Specifically, such as Figure 4 and Figure 5 As shown, sealing ring 1 and sealing ring 2 10 work together to improve the sealing effect on gearbox 9.

[0029] One end of the gearbox 9 is provided with an output shaft 14, and both the upper and lower ends of the output shaft 14 are provided with locking blocks 11. One side of the felt ash seal 12 is provided with a locking groove 18 corresponding to the locking block 11, and the locking groove 18 is engaged with the locking block 11.

[0030] Specifically, such as Figure 1 and Figure 3As shown, the card block 11 maintains a stable axial position and does not move during the high-speed rotation of the output shaft 14, which can serve to fix the felt ash seal 12.

[0031] The upper and lower ends of the felt ash seal 12 are provided with slot 2 19 on the other side, the upper and lower ends of the Teflon ash seal 13 are provided with slot 1 20 on one side, and the upper and lower ends of the cap 4 are fixed with insert block 22, and the insert block 22 is engaged with slot 1 20 and slot 2 19.

[0032] Specifically, such as Figure 5 and Figure 3 As shown, insert block 22 is inserted into slot 2 19 and slot 1 20 to limit the position of Teflon ash seal 13 and felt ash seal 12, thereby improving the stability of Teflon ash seal 13 and felt ash seal 12.

[0033] Guide rods 16 are fixed at equal intervals on one side of the pressure plate 2 5, and guide blocks 17 are set at equal intervals on the other side of the connecting flange 8, and the guide blocks 17 are engaged with the guide rods 16.

[0034] Specifically, such as Figure 1 and Figure 3 As shown, the connecting flange 8 limits the guide rod 16 through the guide block 17, which also effectively prevents the pressure plate 2 5 from shaking during rotation and enhances the connection stability between the pressure plate 2 5 and the connecting flange 8.

[0035] Working principle: In use, the cover 15 is passed through the output shaft 14, and then the second screw 6 is inserted into the connecting flange 8. The threaded sleeve 7 is turned to lock the second screw 6, so that the cover 15 is installed on the connecting flange 8. At the same time, the connecting flange 8 limits the guide rod 16 through the guide block 17, which also effectively prevents the pressure plate 5 from shaking during rotation and enhances the connection stability between the pressure plate 5 and the connecting flange 8. Then, the cap 4 is passed through the output shaft 14, and the first screw 3 is exposed out of the cap 4. The threaded sleeve 2 is turned to lock the first screw 3, so that the cap 4 is installed on the cover 15. At the same time, the insert block 22 is inserted into the slot 19 and slot 20 to seal the Teflon ash. 13. The position of the felt seal 12 is limited to improve the stability of the Teflon seal 13 and the felt seal 12, thereby completing the installation of the sealing cover and facilitating the disassembly and assembly of the cover body 15. When the Teflon seal 13 or the felt seal 12 is worn to a certain extent, the cover body 15 can be easily removed, greatly improving the convenience of maintenance. In addition, the locking block 11 maintains a stable axial position during the high-speed rotation of the output shaft 14, which can fix the felt seal 12. Subsequently, the felt seal 12 and the Teflon seal 13 cooperate with each other to improve the sealing and wear resistance of the gearbox 9. The sealing ring 1 and the sealing ring 2 cooperate with each other to improve the sealing effect of the gearbox 9. In summary, the sealing cover is easy to disassemble, assemble, and maintain, and has good stability.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sealing end cover for a gearbox of a screw conveyor, comprising a cover body (15) and a gearbox (9), characterized in that: The cover (15) is located at one end of the gearbox (9). A pressure plate (5) is provided on one side of the cover (15). A screw (6) is fixed at the upper and lower ends of one side of the pressure plate (5). A connecting flange (8) is provided at one end of the gearbox (9). A threaded sleeve (7) is threaded at the upper and lower ends of one side of the connecting flange (8). The threaded sleeve (7) is threaded with the screw (6). A pressure plate (21) is provided on the other side of the cover (15). A screw (3) is fixed at the upper and lower ends of one side of the pressure plate (21). A cap (4) is provided on one side of the pressure plate (21). A threaded sleeve (2) is rotatably connected at the upper and lower ends of one side of the cap (4). The threaded sleeve (2) is threaded with the screw (3).

2. The sealing end cover for a gearbox of a screw conveyor according to claim 1, characterized in that: The cover (15) is provided with a felt seal (12) inside, and a Teflon seal (13) is provided on one side of the felt seal (12).

3. The sealing end cover for a gearbox of a screw conveyor according to claim 1, characterized in that: The gearbox (9) is provided with an output shaft (14) at one end, and the upper and lower ends of the output shaft (14) are provided with locking blocks (11).

4. The sealing end cover for a gearbox of a screw conveyor according to claim 1, characterized in that: A sealing ring 1 (1) is provided on one side of the cap (4), and a sealing ring 2 (10) is provided on one side of the connecting flange (8).

5. A sealing end cover for a gearbox of a screw conveyor according to claim 2, characterized in that: The felt seal (12) has a slot (18) on one side corresponding to the card block (11), and the slot (18) engages with the card block (11).

6. A sealing end cover for a gearbox of a screw conveyor according to claim 5, characterized in that: The upper and lower ends of the felt seal (12) are provided with slot 2 (19), and the upper and lower ends of the Teflon seal (13) are provided with slot 1 (20).

7. A sealing end cover for a gearbox of a screw conveyor according to claim 4, characterized in that: The cap (4) has a plug (22) fixed at the upper and lower ends on the other side, and the plug (22) is engaged with slot one (20) and slot two (19).

8. The sealing end cover for a gearbox of a screw conveyor according to claim 1, characterized in that: The pressure plate (5) has guide rods (16) fixed at equal intervals on one side edge, and guide blocks (17) are provided at equal intervals on the other side edge of the connecting flange (8), and the guide blocks (17) are engaged with the guide rods (16).

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