A cylindrical drum device for a horizontal screw centrifuge

Abstract

This utility model relates to the field of horizontal decanter centrifuge technology, specifically a cylindrical drum device for a horizontal decanter centrifuge. It includes a cylindrical drum body with mounting flanges fixedly installed on both ends. A first connecting flange is detachably installed on the outer side of one mounting flange, and a second connecting flange is detachably installed on the outer side of the other mounting flange. A conical drum is fixedly installed on one outer wall of the second connecting flange, and a sleeve is fixedly installed on one outer wall of the conical drum. A power shaft is inserted into the sleeve. The device features a limiting block on the power shaft that engages with a limiting hole on the inner wall of the sleeve. Simultaneously, a locking block inside the sleeve matches a limiting groove at the inner end of the power shaft. Precise movement and fixation of the locking block are achieved through a bidirectional screw, worm gear, or other structures, ensuring a stable connection between the power shaft and the drum. This effectively avoids uneven power transmission and drum wobbling during high-speed rotation, thus improving separation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of horizontal screw centrifuge technology, specifically to a cylindrical drum device for a horizontal screw centrifuge. Background Technology

[0002] Horizontal screw centrifuges, as highly efficient solid-liquid separation equipment, have wide and important applications in many industrial fields, such as wastewater treatment, food processing, and chemical production. Their core function is to effectively separate solids and liquids in a mixture using centrifugal force, thereby meeting the purity and state requirements of different production processes.

[0003] In the structure of a horizontal decanter centrifuge, the cylindrical drum is one of the key components, directly affecting the centrifuge's separation efficiency and operational stability. Traditional cylindrical drum devices suffer from several shortcomings. First, the connection between the power shaft and the drum is not robust enough, leading to uneven power transmission and drum wobbling during high-speed rotation. This not only affects separation efficiency but may also accelerate equipment wear, shorten its lifespan, and even pose safety hazards. Second, installation and disassembly are inconvenient. Maintenance, repair, and component replacement of traditional cylindrical drum devices involve complex installation structures and cumbersome operations, requiring significant time and manpower, increasing downtime and maintenance costs. Therefore, we propose a new cylindrical drum device for horizontal decanter centrifuges. Utility Model Content

[0004] The purpose of this invention is to provide a cylindrical drum device for a horizontal screw centrifuge to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a cylindrical drum body, with mounting flanges fixedly installed on both ends of the cylindrical drum body. A first connecting flange is detachably installed on the outer side of one mounting flange, and a second connecting flange is detachably installed on the outer side of the other mounting flange. A conical drum is fixedly installed on one outer wall of the second connecting flange. Several discharge ports are evenly distributed on the conical drum. A sleeve is fixedly installed on one outer wall of the conical drum. A power shaft is inserted into the sleeve. Sliding blocks are symmetrically arranged on the upper and lower sides of the sleeve. A limiting groove for cooperation with the slots is provided at the inner end of the power shaft. A bidirectional screw is rotatably arranged inside the sleeve via a bearing. The bidirectional screw passes through the upper and lower slots and is threadedly connected to them. A drive cavity is also provided inside the sleeve. The bidirectional screw passes through the drive cavity and extends into it. A worm gear is keyed into the drive cavity on the bidirectional screw. A worm is rotatably arranged on the sleeve, and the worm and worm gear mesh with each other.

[0006] Preferably, a through hole is provided on the first connecting flange, and a drive shaft is rotatably arranged in the through hole. The drive shaft is connected to the internal threaded conveying disc of the cylindrical drum body. The drive shaft is connected to a power device. Insert blocks are fixedly installed on the outer wall of the first connecting flange located on one side of the mounting flange and on the outer wall of the second connecting flange located on one side of the mounting flange. Insert holes for use with the insert blocks are provided on the side wall of the mounting flange.

[0007] Preferably, the mounting flange has several mounting cavities evenly distributed inside, a sliding plate is slidably disposed inside the mounting cavity, a plug rod is fixedly installed on the sliding plate, and a slot for cooperating with the plug rod is provided on the plug block.

[0008] Preferably, a slide rod is fixedly installed on the slide plate, the slide rod passes through the side wall of the mounting cavity and is slidably connected to the mounting flange, and a handle is fixedly installed at the outer end of the slide rod.

[0009] Preferably, a return spring is sleeved on the outer side of the slide rod, one end of the return spring is fixedly connected to the slide plate, and the other end of the return spring is fixedly connected to the inner wall of the mounting cavity.

[0010] Preferably, an adjustment handle is fixedly installed at the outer end of the worm gear.

[0011] Preferably, a plurality of limiting blocks are uniformly fixedly installed on the power shaft, and a plurality of limiting holes that cooperate with the limiting blocks are uniformly opened on the inner wall of the sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In terms of the stability of power transmission and drum connection, a limiting block is set on the power shaft, which cooperates with the limiting hole on the inner wall of the sleeve. At the same time, the locking block inside the sleeve is adapted to the limiting groove at the inner end of the power shaft. Then, the locking block is accurately moved and fixed through structures such as bidirectional screw and worm gear, so that the connection between the power shaft and the drum is stable. This can effectively avoid uneven power transmission and drum shaking during high-speed rotation, improve separation efficiency, reduce equipment wear, extend service life, and reduce safety hazards.

[0013] In addition, the first and second connecting flanges are connected to the mounting flange through the insertion of the plug block. The connection and separation of the plug rod and the plug block slot can be easily controlled by the handle through the structure of the sliding plate, plug rod and return spring in the mounting cavity. The operation is simple, saving time and manpower when maintaining, repairing or replacing parts of the equipment, and reducing maintenance costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0016] Figure 3 This is a schematic diagram of the internal structure of the sleeve of this utility model;

[0017] Figure 4 For the present utility model Figure 3 Enlarged view of the structure at point A in the middle;

[0018] Figure 5 For the present utility model Figure 2 Enlarged view of the structure at point B in the middle.

[0019] The components represented by each number in the attached diagram are listed below: 1. Cylindrical drum body; 2. First connecting flange; 3. Drive shaft; 4. Mounting flange; 5. Second connecting flange; 6. Conical drum; 7. Discharge port; 8. Sleeve; 9. Power shaft; 10. Limiting block; 11. Limiting hole; 12. Limiting groove; 13. Clamping block; 14. Bidirectional screw; 15. Drive cavity; 16. Worm gear; 17. Worm; 18. Adjusting handle; 19. Mounting cavity; 20. Slide plate; 21. Insert rod; 22. Insert block; 23. Insertion hole; 24. Slide rod; 25. Return spring; 26. Handle. Detailed Implementation

[0020] 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.

[0021] This utility model provides a technical solution: such as Figures 1-5 The cylindrical drum device of a horizontal screw centrifuge shown includes a cylindrical drum body 1. Mounting flanges 4 are fixedly installed on both ends of the cylindrical drum body 1. A first connecting flange 2 is detachably installed on the outside of one mounting flange 4. A through hole is opened through the first connecting flange 2. A drive shaft 3 is rotatably installed in the through hole. The drive shaft 3 is connected to a threaded conveying disc inside the cylindrical drum body 1. The drive shaft 3 is connected to a power device. At this time, the threaded conveying disc can be driven to rotate by the power device and the drive shaft 3, thereby realizing the function of conveying materials.

[0022] On the other side, a second connecting flange 5 is detachably installed on the outer side of the flange 4. A conical drum 6 is fixedly installed on the outer wall of one side of the second connecting flange 5. At this time, under the action of the conical drum 6 and the cylindrical drum body 1, the drum body is formed, thereby ensuring the efficiency of the horizontal screw centrifuge. Several discharge ports 7 are evenly opened on the conical drum 6. Under the action of the discharge ports 7, solid materials can be discharged.

[0023] A sleeve 8 is fixedly installed on one side of the outer wall of the conical drum 6. A power shaft 9 is inserted into the sleeve 8. Under the action of the power shaft 9, the drum body can be driven to rotate. Several limiting blocks 10 are evenly fixedly installed on the power shaft 9. Several limiting holes 11 that cooperate with the limiting blocks 10 are evenly opened on the inner wall of the sleeve 8. At this time, under the action of the limiting blocks 10 and the limiting holes 11, the drum body can rotate coaxially with the power shaft 9, thereby ensuring the efficiency of the drum body.

[0024] The sleeve 8 has symmetrically sliding locking blocks 13 inside its upper and lower sides. The inner end of the power shaft 9 has a limiting groove 12 that works with the locking blocks 13. The sleeve 8 also has a bidirectional screw 14 that rotates through a bearing inside its sleeve. The bidirectional screw 14 passes through the upper and lower locking blocks 13 and is threadedly connected to the upper and lower locking blocks 13. Rotating the bidirectional screw 14 will move the upper and lower locking blocks 13 closer or further away, thereby installing and fixing the power shaft 9, thus ensuring the rotation quality of the drum body.

[0025] The sleeve 8 also has a drive cavity 15. The bidirectional screw 14 passes through the drive cavity 15 and extends into the drive cavity 15. The drive cavity 15 on the bidirectional screw 14 is connected to a worm gear 16 by a key. The sleeve 8 is rotatably mounted with a worm 17. The worm 17 and the worm gear 16 mesh with each other. Rotating the worm 17 will drive the bidirectional screw 14 to rotate through the worm gear 16, thereby controlling the position of the locking block 13. In addition, since the worm gear 16 and the worm 17 have a self-locking function, the position of the locking block 13 after adjustment can be restricted, thereby ensuring the connection quality between the power shaft 9 and the drum body. An adjustment handle 18 is fixedly installed at the outer end of the worm 17. Under the action of the adjustment handle 18, the worm 17 can be rotated.

[0026] Insert blocks 22 are fixedly installed on the outer wall of the first connecting flange 2 located on one side of the mounting flange 4, and on the outer wall of the second connecting flange 5 located on one side of the mounting flange 4. Insert holes 23 are provided on the side wall of the mounting flange 4 to mate with the insert blocks 22. The insert blocks 22 and insert holes 23 facilitate the installation of the first connecting flange 2, the second connecting flange 5, and the mounting flange 4. Several mounting cavities 19 are evenly distributed inside the mounting flange 4. A sliding plate 20 is slidably disposed inside each mounting cavity 19. Insert rods 21 are fixedly installed on the sliding plate 20. Insert blocks 22 have slots that mate with the insert rods 21. The insertion rods 21 and slots ensure the first connecting flange 2 and the second connecting flange 5 are properly connected. The connection quality between the first connecting flange 2, the second connecting flange 5 and the mounting flange 4 ensures the connection quality between the cylindrical drum body 1 and the conical drum 6. A sliding rod 24 is fixedly installed on the slide plate 20. The sliding rod 24 passes through the side wall of the mounting cavity 19 and is slidably connected to the mounting flange 4. A return spring 25 is sleeved on the outside of the sliding rod 24. One end of the return spring 25 is fixedly connected to the slide plate 20, and the other end of the return spring 25 is fixedly connected to the inner wall of the mounting cavity 19. At this time, under the action of the return spring 25, the connection quality between the insertion rod 21 and the insertion block 22 is ensured. A handle 26 is fixedly installed at the outer end of the sliding rod 24. The slide plate 20 can be moved by the handle 26.

[0027] Working principle: When the drum of this horizontal screw centrifuge is working, the power equipment drives the drive shaft 3 to rotate. The drive shaft 3 is connected to the threaded conveying disc inside the cylindrical drum body 1, thereby driving the threaded conveying disc to rotate and realize the material conveying function.

[0028] The cylindrical drum body 1 has mounting flanges 4 on both sides. One mounting flange 4 is connected to a detachable first connecting flange 2, and the other side is connected to a detachable second connecting flange 5. A conical drum 6 is fixed to one side of the second connecting flange 5, and the two together constitute the drum body. Several discharge ports 7 are opened on the conical drum 6 for discharging solid materials. A power shaft 9 is inserted into a sleeve 8 on one side of the conical drum 6. The limiting block 10 on the power shaft 9 cooperates with the limiting hole 11 on the inner wall of the sleeve 8, so that the drum body and the power shaft 9 rotate coaxially. Rotating the adjusting handle 18 drives the worm gear 17 to rotate, and the worm gear 17 drives the worm wheel 16 to drive the bidirectional screw 14 to rotate, so that the locking block 13 moves and engages with the limiting groove 12 of the power shaft 9, thereby realizing the installation and fixation of the power shaft 9.

[0029] When installing flange 4 with first and second connecting flanges 2 and 5, insert block 22 into insertion hole 23, pull handle 26 to make slide plate 20 move insert rod 21. After insert block 22 is inserted, release handle 26. Return spring 25 pushes slide plate 20 to make insert rod 21 lock into slot of insert block 22, ensuring connection quality and thus ensuring stable operation of the entire drum.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cylindrical bowl arrangement for a decanter centrifuge, comprising a cylindrical bowl body (1), characterized in that: The cylindrical drum body (1) is fixedly installed with mounting flanges (4) on both sides. A first connecting flange (2) is detachably installed on the outside of one mounting flange (4), and a second connecting flange (5) is detachably installed on the outside of the other mounting flange (4). A conical drum (6) is fixedly installed on the outer wall of one side of the second connecting flange (5). Several discharge ports (7) are evenly opened on the conical drum (6). A sleeve (8) is fixedly installed on the outer wall of one side of the conical drum (6). A power shaft (9) is inserted into the sleeve (8). A locking block (13) is symmetrically slidably arranged on the upper and lower sides of the sleeve (8). The inner side of the power shaft (9) The end is provided with a limiting groove (12) for use with the locking block (13). The sleeve (8) is also provided with a bidirectional screw (14) through a bearing. The bidirectional screw (14) passes through the upper and lower locking blocks (13) and is threadedly connected to the upper and lower locking blocks (13). The sleeve (8) is also provided with a drive cavity (15). The bidirectional screw (14) passes through the drive cavity (15) and extends into the drive cavity (15). The drive cavity (15) on the bidirectional screw (14) is provided with a worm gear (16) through a key connection. The sleeve (8) is provided with a worm (17) that is rotatably provided. The worm (17) and the worm gear (16) mesh with each other.

2. A cylindrical bowl assembly for a pusher centrifuge according to claim 1, characterized in that: The first connecting flange (2) has a through hole, and a drive shaft (3) is rotatably installed in the through hole. The drive shaft (3) is connected to the internal threaded conveying disc of the cylindrical drum body (1). The drive shaft (3) is connected to the power equipment. The first connecting flange (2) is fixedly installed on the outer wall of the mounting flange (4) and the second connecting flange (5) is fixedly installed on the outer wall of the mounting flange (4). The side wall of the mounting flange (4) has a socket (23) for use with the socket (22).

3. A cylindrical bowl assembly for a pusher centrifuge according to claim 2, characterized in that: The mounting flange (4) has several mounting cavities (19) evenly distributed inside. A sliding plate (20) is slidably arranged inside the mounting cavity (19). A plug rod (21) is fixedly installed on the sliding plate (20). A slot for cooperating with the plug rod (21) is provided on the plug block (22).

4. A cylindrical bowl assembly for a pusher centrifuge according to claim 3, characterized in that: A slide rod (24) is fixedly installed on the slide plate (20). The slide rod (24) passes through the side wall of the mounting cavity (19) and is slidably connected to the mounting flange (4). A handle (26) is fixedly installed at the outer end of the slide rod (24).

5. A cylindrical bowl assembly for a pusher centrifuge according to claim 4, characterized in that: A reset spring (25) is sleeved on the outside of the slide bar (24). One end of the reset spring (25) is fixedly connected to the slide plate (20), and the other end of the reset spring (25) is fixedly connected to the inner wall of the mounting cavity (19).

6. The cylindrical drum device for a horizontal screw centrifuge according to claim 1, characterized in that: An adjusting handle (18) is fixedly installed at the outer end of the worm (17).

7. A cylindrical bowl assembly for a pusher centrifuge according to claim 1, characterized in that: A number of limiting blocks (10) are evenly fixedly installed on the power shaft (9), and a number of limiting holes (11) that cooperate with the limiting blocks (10) are evenly opened on the inner wall of the sleeve (8).

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