A connection assembly and a clarifier

Abstract

The utility model relates to clarifier technical field, concretely is a kind of connecting assembly and a clarifier, the connecting assembly includes first flange and second flange, it is connected through multiple connecting bolts and nut cooperation between the first flange and the second flange, at least two keyways are provided on the first flange and the second flange, the keyway on the first flange and the second flange correspond to constitute a flat key groove, flat key is provided in the flat key groove. The clarifier includes above-mentioned connecting assembly. The connecting assembly in the utility model can stably bear large torque, ensure that rake body reliably rotates, ensure that clarifier continuously and stably operates;Simple structure, reasonable in design connecting assembly is also greatly reduced the maintenance cost of clarifier, reduce downtime frequency and downtime, improve the solid-liquid separation efficiency of clarifier.

Description

Technical Field

[0001] This utility model relates to the field of clarifier technology, and in particular to a connecting component and a clarifier. Background Technology

[0002] In the papermaking industry, clarifiers are indispensable key equipment for processing liquids such as green liquor and white liquor, playing a crucial role in ensuring production. Among the structural components of a clarifier, the rake is an extremely important component. Installed inside the clarifier, its main function is to scrape off and collect the sludge deposited at the bottom of the clarifier, then transport this sludge to the scraper well and finally discharge it from the clarifier, thus ensuring the continuous and stable operation of the clarifier and achieving efficient solid-liquid separation. Typically, the rake is quite heavy and long, with some rakes reaching approximately 30 meters in length, which places high demands on the structural strength and rotational stability of the rake.

[0003] The rotation of the rake body requires power, currently primarily provided by a speed reducer. The speed reducer transmits power to the rake body's mixing shaft via its drive shaft, thereby driving the rake body to rotate and complete the sludge scraping operation. However, in practical applications, existing technologies generally use a common flange structure to connect the speed reducer's drive shaft and the rake body's mixing shaft.

[0004] This type of conventional flange connection structure has significant drawbacks when facing the rotation of the rake body. Due to the large weight and length of the rake body, it generates a very large torque during rotation. The conventional flange connection structure, due to its design features and material limitations, cannot effectively withstand and transmit such a large torque. When the drive shaft drives the agitator shaft, the conventional flange connection is prone to loosening and slippage, failing to stably drive the rake body on the agitator shaft. Over long-term operation, this unstable connection can lead to deformation of the flange connection, and in severe cases, even breakage. This, in turn, affects the normal operation of the rake body, reduces the separation efficiency of the clarifier, increases equipment maintenance costs and downtime, and causes significant economic losses to industrial production.

[0005] Therefore, developing a connection structure that can stably withstand large torques and ensure reliable rotation of the rake body is of great practical significance for improving the working performance and operational stability of the clarifier. Utility Model Content

[0006] To address the aforementioned shortcomings, the purpose of this invention is to provide a connecting component and a clarifier, thereby resolving the problems of existing ordinary flange connection structures being unable to effectively withstand and transmit large torques and exhibiting poor rotational stability.

[0007] To achieve the above objectives, this utility model provides a connecting assembly, including a first flange and a second flange. The first flange and the second flange are connected by a plurality of connecting bolts and nuts. Each of the first flange and the second flange is provided with at least two keyways. The keyways on the first flange and the second flange are correspondingly arranged to form a flat keyway. A flat key is provided in the flat keyway. The flat key is fixed to the first flange and the second flange by hexagonal bolts.

[0008] As a preferred technical solution, a spring washer is provided between the hexagonal bolt and the flat key.

[0009] As a preferred technical solution, a stop washer is provided between the flat key and the side wall of the flat keyway.

[0010] This utility model also provides a clarifier, including a connecting assembly; it also includes a housing, in which a stirring assembly is disposed, the stirring assembly including a first stirring shaft and a rake body, the rake body being mounted on the first stirring shaft, the top of the first stirring shaft being connected to the drive shaft of a speed reducer through the connecting assembly; a first flange being mounted on the bottom of the drive shaft, and a second flange being mounted on the top of the first stirring shaft.

[0011] As a preferred technical solution, a sludge scraping well is provided at the bottom of the shell, a sludge scraping assembly is provided inside the sludge scraping well, and a sludge outlet is provided at the bottom of the side wall of the sludge scraping well; the stirring assembly and the sludge scraping assembly are coaxially arranged. The sludge scraping assembly includes a second stirring shaft and a stirring frame, the stirring frame being mounted on the second stirring shaft, and the top of the second stirring shaft being connected to the bottom of the first stirring shaft via another connecting assembly.

[0012] As a preferred technical solution, the rake body is also connected to the first stirring shaft by multiple rake body tie rods, each tie rod comprising at least two rods, with adjacent rods connected by a rod connector.

[0013] As a preferred technical solution, the end of the rod body connected to the rod body connector is provided with a threaded connector; the rod body connector is a cylindrical structure with openings at both ends, and each opening of the rod body connector is provided with a recessed groove, and the recessed groove is provided with a thread; a rotatable connecting sleeve is screwed into the connector head, the connecting sleeve is detachably screwed into the recessed groove, and a locking nut is also screwed into the connector head, the locking nut abutting against the connecting sleeve.

[0014] As a preferred technical solution, one end of the rod body connected to the rod body connector is provided with a threaded connector; the rod body connector is a cylindrical structure with openings at both ends, and the inside of the cylindrical body of the rod body connector is provided with bidirectional threads; the internal threads at both ends of the rod body connector are respectively connected to the connectors on the adapted rod body.

[0015] As a preferred technical solution, the bottom of the shell has an inverted conical structure and the angle between the conical bottom surface and the horizontal plane is 5~30°.

[0016] As a preferred technical solution, the rake body is adapted to the conical bottom surface of the shell and a gap is provided between them.

[0017] This utility model provides a connecting component and a clarifier. The connecting component can stably withstand large torque, ensure reliable rotation of the rake body, and ensure continuous and stable operation of the clarifier. The simple and reasonably designed connecting component also greatly reduces the maintenance cost of the clarifier, reduces the number of downtimes and downtime, and improves the solid-liquid separation efficiency of the clarifier. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the clarifier of this utility model; Figure 2 This is a schematic diagram showing the direction of the rake's rotation. Figure 3 for Figure 1 Enlarged view of B in the middle; Figure 4 for Figure 1 Enlarged view of C; Figure 5 for Figure 1 Sectional view in AA; A schematic diagram of the structure; In the picture: 1-Drive shaft, 2-First stirring shaft, 3-Rake body, 4-Scraping well, 5-Bottom support, 6-Rake body tie rod, 7-Flat key, 8-Stop washer, 9-Sludge outlet, 10-Shell, 11-Second stirring shaft, 12-Stirring frame, 21-First flange, 22-Second flange, 23-Keyway, 61-Rod body, 611-Connector, 62-Rod body connector, 621-Sinking trough, 622-Connecting sleeve, 623-Locking nut, B1-Hex bolt, B2-Spring washer, B3-Connecting bolt. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0020] Example 1: See Figure 1 and Figure 2 This utility model provides a clarifier, including a housing 10. The bottom of the housing 10 has an inverted conical structure, and the angle between the conical bottom surface and the horizontal plane is 5~30°, preferably 8°. Setting the bottom of the housing 10 to an inverted conical structure facilitates the natural sliding of sludge along the conical surface and its convergence towards the center of the cylinder, reducing the adhesion of sediment at the bottom of the cylinder and avoiding the "dead corner" problem common in flat-bottomed structures, ensuring complete collection of sludge.

[0021] The bottom of the shell 10 is provided with a sludge scraping well 4, and the bottom of the side wall of the sludge scraping well 4 is provided with a sludge outlet 9.

[0022] A stirring assembly is installed inside the shell 10, and a sludge scraping assembly is installed inside the sludge scraping well 4. The stirring assembly and the sludge scraping assembly are coaxially arranged.

[0023] Specifically, the mixing assembly includes a first mixing shaft 2 and a rake body 3. The rake body 3 is mounted on the first mixing shaft 2, and the rake body 3 is adapted to the conical bottom surface of the housing 10 with a gap between them. The gap distance is 50-100mm, preferably 61mm. The gap distance is adjustable and can be adjusted according to the actual needs on site during installation. This design ensures that when the rake body 3 is lowered to its maximum position, it can guarantee the sludge scraping effect without hitting the conical bottom surface of the housing 10, thus preventing wear.

[0024] The rake body 3 rotates along the conical bottom of the shell 10, pushing the accumulated mud to the scraping well 4. This arrangement ensures that the mud discharge process is continuous and thorough, avoiding the risk of downtime.

[0025] The rake body 3 is also connected to the first stirring shaft 2 by multiple rake body tie rods 6. Furthermore, the rake body tie rods 6 are connected at half the radius of the rake body 3, making the rake body 3 more stable when rotating.

[0026] The sludge scraping assembly includes a second stirring shaft 11 and a stirring frame 12, wherein the stirring frame 12 is mounted on the second stirring shaft 11.

[0027] A bottom support 5, preferably a bearing, is welded to the center of the bottom of the sludge scraper well 4. The bottom of the second stirring shaft 11 is installed inside the bottom support 5 and is rotatable. The top of the second stirring shaft 11 is connected to the bottom of the first stirring shaft 2, and the top of the first stirring shaft 2 is connected to the drive shaft 1 of the reducer via a connecting assembly.

[0028] See Figure 3 and Figure 5The connecting assembly includes a first flange 21 mounted at the bottom of the drive shaft 1 and a second flange 22 mounted at the top of the first stirring shaft 2. The first flange 21 and the second flange 22 are connected by a plurality of connecting bolts B3 and nuts.

[0029] Both the first flange 21 and the second flange 22 are provided with at least two keyways 23, preferably four, and distributed at equal angles. The keyways 23 on the first flange 21 and the second flange 22 correspond vertically to form a complete flat keyway. A flat key 7 is provided in the flat keyway, and a retaining washer 8 is provided between the flat key 7 and the side wall of the flat keyway. The flat key 7 is fixed to the first flange 21 and the second flange 22 by hexagonal bolts B1. Preferably, a spring washer B2 is provided between the hexagonal bolt B1 and the flat key 7.

[0030] By installing the connecting assembly between the first stirring shaft 2 and the drive shaft 1, not only can the connecting assembly withstand large torque and ensure the reliable rotation of the rake body, thus ensuring the continuous and stable operation of the clarifier, but it also reduces the number of shutdowns and downtime, greatly reducing the maintenance cost of the clarifier and improving the solid-liquid separation efficiency of the clarifier.

[0031] Example 2: This invention also provides a clarifier, which differs from Embodiment 1 in that the second stirring shaft 11 and the first stirring shaft 2 can be connected by a conventional flange or by the connecting assembly described in Embodiment 1. The connection assembly enhances the stability of the connection between the second stirring shaft 11 and the first stirring shaft 2.

[0032] Example 3: See Figure 1 and Figure 4 The present invention also provides a clarifier, which differs from the first embodiment above in that: the rake body rod 6 includes at least two rods 61, and adjacent rods 61 are connected by rod connectors 62.

[0033] Specifically, the rod body 61 has a threaded connector 611 at one end that connects to the rod connector 62. The rod connector 62 is a cylindrical structure with openings at both ends. Each opening of the rod connector 62 has a recessed groove 621 with threads inside. A rotatable connecting sleeve 622 is screwed onto the connector 611. The connecting sleeve 622 is detachably screwed into the recessed groove 621. A locking nut 623 is also screwed onto the connector 611, and the locking nut 623 is tightened and abuts against the connecting sleeve 622.

[0034] The two rods 61 are connected together by the rod connector 62, which makes the connection between the two rods 61 more stable and easier to adjust. Only one rod 61 can be adjusted according to the on-site installation requirements, or both rods 61 can be adjusted at the same time.

[0035] Example 4: This utility model also provides a clarifier, which differs from Embodiment 3 above in that: one end of the rod 61 that connects to the rod connector 62 is provided with a threaded connector 611. The rod connector 62 is a cylindrical structure with openings at both ends, and the inside of the cylindrical body of the rod connector 62 is provided with bidirectional threads.

[0036] The internal threads at both ends of the rod connector 62 are respectively connected to the connector 611 on the adapted rod 61.

[0037] By setting a bidirectional thread inside the cylinder of the rod connector 62, the connection of the two rods 61 connected by the rod connector 62 is realized. The length is adjustable and it is easy to use.

[0038] Example 5 This utility model also provides a connecting assembly, including a first flange 21 and a second flange 22, wherein the first flange 21 and the second flange 22 are connected by a plurality of connecting bolts B3 and nuts.

[0039] Both the first flange 21 and the second flange 22 are provided with at least two keyways 23, preferably four, and distributed at equal angles. The keyways 23 on the first flange 21 and the second flange 22 correspond vertically to form a complete flat keyway, and a flat key 7 is provided within the flat keyway. A retaining washer 8 is provided between the flat key 7 and the side wall of the flat keyway. The flat key 7 is fixed to the first flange 21 and the second flange 22 by hexagonal bolts B1. Preferably, a spring washer B2 is provided between the hexagonal bolts B1 and the flat key 7. This connection assembly has a simple structure, reasonable design, and can stably withstand large torques.

[0040] This utility model provides a connecting component and a clarifier. The connecting component can stably withstand large torque, ensure reliable rotation of the rake body, and ensure continuous and stable operation of the clarifier. The simple and reasonably designed connecting component also greatly reduces the maintenance cost of the clarifier, reduces the number of downtimes and downtime, and improves the solid-liquid separation efficiency of the clarifier.

[0041] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A connecting assembly, comprising a first flange (21) and a second flange (22), wherein the first flange (21) and the second flange (22) are connected by a plurality of connecting bolts (B3) and nuts, characterized in that, At least two keyways (23) are provided on the first flange (21) and the second flange (22). The keyways (23) on the first flange (21) and the second flange (22) are arranged in a flat keyway. A flat key (7) is provided in the flat keyway. The flat key (7) is fixed on the first flange (21) and the second flange (22) by hexagonal bolts (B1).

2. A connection component according to claim 1, characterized in that, A spring washer (B2) is provided between the hexagonal bolt (B1) and the flat key (7).

3. A connection component according to claim 2, characterized in that, A stop washer (8) is provided between the flat key (7) and the side wall of the flat keyway.

4. A clarifier, characterized in that, The assembly includes the connecting component as described in any one of claims 1 to 3; it also includes a housing (10) in which a stirring component is provided, the stirring component including a first stirring shaft (2) and a rake body (3), the rake body (3) being mounted on the first stirring shaft (2), the top of the first stirring shaft (2) being connected to the drive shaft (1) of the reducer through the connecting component; the first flange (21) being mounted on the bottom of the drive shaft (1), and the second flange (22) being mounted on the top of the first stirring shaft (2).

5. A clarifier according to claim 4, characterized in that, The bottom of the shell (10) is provided with a sludge scraping well (4), a sludge scraping assembly is provided inside the sludge scraping well (4), and a sludge outlet (9) is provided at the bottom of the side wall of the sludge scraping well (4); the stirring assembly and the sludge scraping assembly are coaxially arranged. The sludge scraping assembly includes a second stirring shaft (11) and a stirring frame (12), the stirring frame (12) being mounted on the second stirring shaft (11), and the top of the second stirring shaft (11) being connected to the bottom of the first stirring shaft (2) via another connecting assembly.

6. A clarifier according to claim 4, characterized in that, The rake body (3) is also connected to the first stirring shaft (2) by multiple rake body tie rods (6). The rake body tie rods (6) include at least two rods (61), and adjacent rods (61) are connected to each other by rod connectors (62).

7. A clarifier according to claim 6, characterized in that, The rod (61) is provided with a threaded connector (611) at one end connected to the rod connector (62); the rod connector (62) is a cylindrical structure with openings at both ends, and both openings of the rod connector (62) are provided with recessed grooves (621), and the grooves (621) are provided with threads; a rotatable connecting sleeve (622) is screwed onto the connector (611), and the connecting sleeve (622) is detachably screwed into the grooves (621); a locking nut (623) is also screwed onto the connector (611), and the locking nut (623) abuts against the connecting sleeve (622).

8. A clarifier according to claim 6, characterized in that, The rod (61) is provided with a threaded connector (611) at one end that is connected to the rod connector (62); the rod connector (62) is a cylindrical structure with open ends, and the inside of the cylindrical body of the rod connector (62) is provided with bidirectional threads; the internal threads at both ends of the rod connector (62) are respectively connected to the connectors (611) on the adapted rod (61).

9. A clarifier according to claim 4, characterized in that, The bottom of the shell (10) has an inverted conical structure and the angle between the conical bottom surface and the horizontal plane is 5~30°.

10. A clarifier according to claim 9, characterized in that, The rake body (3) is adapted to the conical bottom surface of the shell (10) and a gap is provided between them.

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