Bearing dismounting tool for three-phase horizontal spiral centrifugal machine

Abstract

The utility model relates to the technical field of disassembling tools, and provides a bearing disassembling tool for a three-phase horizontal spiral centrifugal machine, which is used for taking down a bearing inner ring on a spiral pusher, the spiral pusher is provided with a first step and comprises a gasket, the gasket is arranged on the spiral pusher in a sliding mode, one side of the gasket abuts against the first step, and the other side of the gasket abuts against the second step. The other side abuts against the side wall of the bearing inner ring. The detacher is slidably arranged relative to the spiral pusher, one end of the detacher is connected with the gasket, and after the detacher slides, the gasket is driven to be separated from the spiral pusher, so that the bearing inner ring is separated from the spiral pusher. By means of the technical scheme, the problem that in the prior art, a bearing inner ring on a spiral pusher of a three-phase horizontal spiral centrifugal machine is difficult to take down when replaced is solved.

Description

Technical Field

[0001] This utility model relates to the field of disassembly tooling technology, specifically to a bearing disassembly tooling for a three-phase horizontal spiral centrifuge. Background Technology

[0002] In industrial production, three-phase horizontal screw centrifuges play a vital role, widely used in solid-liquid separation operations across numerous industries such as chemical, pharmaceutical, and environmental protection. However, during long-term operation, wear and tear, as well as malfunctions, inevitably occur in the internal components, necessitating regular maintenance and replacement.

[0003] The screw conveyor, a key component of a three-phase horizontal screw centrifuge, relies heavily on its bearings at both ends for stable operation. However, repairing or replacing the bearing inner rings presents numerous technical challenges. Under current technological conditions, disassembling the bearing inner rings is exceptionally difficult due to the screw conveyor's unique structure and complex operating environment. Traditional disassembly methods often rely on forceful hammering or prying, which are not only difficult and time-consuming but also highly likely to cause irreversible damage to the screw conveyor and surrounding equipment. Damage to the equipment structure not only significantly increases maintenance costs and extends downtime, impacting production schedules but can also reduce overall equipment performance and lifespan, leading to substantial economic losses for the company. Utility Model Content

[0004] This utility model proposes a bearing disassembly fixture for a three-phase horizontal screw centrifuge, which solves the problem of difficulty in removing the inner ring of the bearing on the screw pusher of a three-phase horizontal screw centrifuge when replacing it in related technologies.

[0005] The technical solution of this utility model is as follows:

[0006] A bearing removal fixture for a three-phase horizontal screw centrifuge, used to remove the inner ring of a bearing from a screw feeder, the screw feeder having a first step, comprising:

[0007] A washer is slidably disposed on the screw feeder, with one side of the washer abutting against the first step and the other side abutting against the inner ring sidewall of the bearing;

[0008] A disassembly device is slidably disposed relative to the screw feeder. One end of the disassembly device is connected to the washer. After the disassembly device slides, it drives the washer to disengage from the screw feeder, thereby causing the inner ring of the bearing to disengage from the screw feeder.

[0009] Optionally, the outer wall of the washer has external threads, the outer diameter of the washer is larger than the outer diameter of the inner ring of the bearing, and the disassembly tool includes:

[0010] A connecting plate, the inner side of which has an internal thread, is threaded to the outer wall of the washer;

[0011] Connecting rods, a number of which are connected at one end to the connecting plate;

[0012] A force-bearing plate, which is connected to the other end of the connecting rod;

[0013] A rotating rod is threadedly connected to the force-bearing plate. One end of the rotating rod abuts against the screw pusher. After the rotating rod rotates, it is used to provide a force to move the connecting plate away from the first step.

[0014] Optionally, the connecting plate has a mounting hole, the sidewall of the mounting hole has a groove, the connecting rod has a first abutting portion near the connecting plate, the first abutting portion has a snap-fit ​​surface, and further includes:

[0015] A snap-fit ​​rod is slidably disposed within the slide groove. One end of the snap-fit ​​rod has a first flat surface and a first inclined surface and is located within the mounting hole. After the first abutting part approaches the mounting hole, the first abutting part abuts against the first inclined surface, pushing the snap-fit ​​rod away from the connecting rod. After the first abutting part releases from the first inclined surface, the snap-fit ​​rod approaches the connecting rod, and the first flat surface abuts against the snap-fit ​​surface, thereby limiting the relative position of the connecting rod and the connecting plate.

[0016] Optionally, it also includes:

[0017] A first elastic element has two ends that act on the inner wall of the groove and the locking rod, respectively, to provide a force for the locking rod to approach the mounting hole.

[0018] Optionally, it also includes:

[0019] A sliding ring is slidably disposed on the connecting rod. The sliding ring has a second plane on one side near the first plane and a second inclined plane on the other side. The second plane is used to abut against the snap-fit ​​surface, and the second inclined plane is used to abut against the first plane.

[0020] Optionally, it also includes:

[0021] The second elastic element has two ends that act on the connecting rod and the sliding ring respectively, and is used to provide a force to the sliding ring away from the first abutment.

[0022] Optionally, the end of the rotating rod away from the screw feeder has a gripping portion, and further includes:

[0023] A push plate is disposed at the other end of the rotating rod, and the rotating rod abuts against the screw feeder through the push plate.

[0024] The working principle and beneficial effects of this utility model are as follows:

[0025] In this invention, to solve the problem of difficulty in removing the inner ring of the bearing on the screw conveyor of a three-phase horizontal screw centrifuge during replacement, a bearing disassembly fixture for a three-phase horizontal screw centrifuge is designed. The screw conveyor has a specific first step. Before installing the inner ring of the bearing, a washer is installed on the first step. The washer is then placed on the screw conveyor, ensuring that one side of the washer is in close contact with the first step of the screw conveyor, and the other side of the washer is in contact with the side wall of the inner ring of the bearing to be disassembled. When it is necessary to disassemble the inner ring of the bearing, the disassembly tool is installed on the washer, ensuring that the disassembly tool and the screw conveyor are slidably positioned relative to each other. When the disassembly tool is operated to slide along the screw conveyor, the disassembly tool causes the washer to gradually detach from the screw conveyor. Because the washer is in contact with the side wall of the inner ring of the bearing, the inner ring of the bearing will detach from the screw conveyor during the process of the washer detaching, thereby achieving the disassembly of the inner ring of the bearing.

[0026] The advantage is that, through the cooperation of the washer and the disassembly tool, the inner ring of the bearing can be removed from the screw feeder more easily, avoiding the damage to the equipment that may be caused by the traditional disassembly method, improving disassembly efficiency, reducing maintenance costs and difficulty, and ensuring that the maintenance of the three-phase horizontal screw centrifuge can be carried out smoothly. Attached Figure Description

[0027] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the overall internal structure of this utility model;

[0030] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0031] Figure 4 This is a schematic diagram of the disassembly device structure of this utility model;

[0032] Figure 5 This is a schematic diagram of the internal structure of the disassembly device of this utility model;

[0033] Figure 6 This utility model Figure 5 Enlarged view of section B in the middle.

[0034] In the diagram: 1. Spiral feeder; 2. Inner ring of bearing; 101. First step; 3. Washer; 4. Disassembler; 41. Connecting plate; 42. Connecting rod; 43. Force plate; 44. Rotating rod; 411. Mounting hole; 412. Slide groove; 421. First abutment part; 422. Snap-fit ​​surface; 5. Snap-fit ​​rod; 501. First plane; 502. First inclined plane; 6. First elastic element; 7. Sliding ring; 701. Second plane; 702. Second inclined plane; 8. Second elastic element; 441. Grip part; 9. Push plate. Detailed Implementation

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0036] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0037] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] Reference Figures 1-6This first embodiment of the present invention proposes a bearing disassembly fixture for a three-phase horizontal screw centrifuge, used to remove the inner ring 2 of the bearing from the screw feeder 1. The screw feeder 1 has a first step 101 and includes a washer 3. The washer 3 is slidably disposed on the screw feeder 1, with one side of the washer 3 abutting against the first step 101 and the other side abutting against the side wall of the inner ring 2 of the bearing. The disassembly device 4 is slidably disposed relative to the screw feeder 1, with one end of the disassembly device 4 connected to the washer 3. After the disassembly device 4 slides, it drives the washer 3 to disengage from the screw feeder 1, thereby disengaging the inner ring 2 of the bearing from the screw feeder 1.

[0040] In this embodiment, to solve the problem of difficulty in removing the bearing inner ring on the screw conveyor of a three-phase horizontal screw centrifuge during replacement in related technologies, a bearing disassembly fixture for a three-phase horizontal screw centrifuge is designed. The screw conveyor 1 has a specific first step 101. Before installing the bearing inner ring, a washer 3 is installed on the first step. The washer 3 is placed on the screw conveyor 1, so that one side of the washer 3 is in close contact with the first step 101 of the screw conveyor 1, and the other side of the washer 3 is in contact with the side wall of the bearing inner ring 2 to be disassembled. When it is necessary to disassemble the bearing inner ring 2, the disassembly tool 4 is installed on the washer 3, ensuring that the disassembly tool 4 and the screw conveyor 1 are slidably positioned relative to each other. When the disassembly tool 4 is operated to slide along the screw conveyor 1, the disassembly tool 4 drives the washer 3 to gradually detach from the screw conveyor 1. Since the washer 3 is in contact with the side wall of the bearing inner ring 2, the bearing inner ring 2 will detach from the screw conveyor 1 during the process of the washer 3 detaching, thereby realizing the disassembly of the bearing inner ring 2.

[0041] The advantage is that, through the cooperation of washer 3 and disassembly device 4, the inner ring 2 of the bearing can be removed from the screw feeder 1 more easily, avoiding the damage to the equipment that may be caused by the traditional disassembly method, improving disassembly efficiency, reducing maintenance costs and difficulty, and ensuring that the maintenance of the three-phase horizontal screw centrifuge can be carried out smoothly.

[0042] Furthermore, the outer wall of the washer 3 has external threads, and the outer diameter of the washer 3 is larger than the outer diameter of the inner ring 2 of the bearing. The disassembly device 4 includes a connecting plate 41, the inner side of which has internal threads and is threadedly connected to the outer wall of the washer 3; there are several connecting rods 42, one end of which is connected to the connecting plate 41; the force plate 43 is connected to the other end of the connecting rod 42; the rotating rod 44 is threadedly connected to the force plate 43, one end of which abuts against the screw feeder 1. After the rotating rod 44 rotates, it is used to provide a force for the connecting plate 41 to move away from the first step 101.

[0043] In this embodiment, the outer wall of the washer 3 is machined with external threads, and the outer diameter of the washer 3 is larger than the outer diameter of the inner ring 2 of the bearing. In use, firstly, a connecting plate 41 with internal threads is connected to the outside of the washer 3 to ensure a tight fit. Then, one end of several connecting rods 42 is connected to the connecting plate 41, and the other end of the connecting rods 42 is fixedly connected to the force plate 43. Next, a rotating rod 44 is threaded onto the force plate 43, with one end of the rotating rod 44 aligned with the screw feeder 1. When disassembling the inner ring 2 of the bearing, the operator holds the force plate 43 firmly to prevent it from rotating. Then, the rotating rod 44 is rotated, causing it to rotate on the force plate 43 and generate axial displacement. Since one end of the rotating rod 44 abuts against the screw feeder 1, the resulting reaction force pushes the force plate 43, which in turn drives the connecting plate 41 away from the first step 101 of the screw feeder 1 via the connecting rods 42, thereby causing the washer 3 to detach from the screw feeder 1 and the inner ring 2 of the bearing to detach.

[0044] The advantage is that the threaded connection makes it easy to adjust the relative position between the washer 3 and the connecting plate 41, as well as the relative position between the rotating rod 44 and the force plate 43, which can adapt to three-phase horizontal screw centrifuges of different sizes and installation conditions.

[0045] Furthermore, the connecting plate 41 has a mounting hole 411, and the side wall of the mounting hole 411 has a groove 412. The connecting rod 42 has a first abutting part 421 near the connecting plate 41. The first abutting part 421 has a locking surface 422 and also includes a locking rod 5. The locking rod 5 is slidably disposed in the groove 412. One end of the locking rod 5 has a first flat surface 501 and a first inclined surface 502 and is located in the mounting hole 411. After the first abutting part 421 approaches the mounting hole 411, the first abutting part 421 abuts against the first inclined surface 502, pushing the locking rod 5 away from the connecting rod 42. After the first abutting part 421 releases from the first inclined surface 502, the locking rod 5 approaches the connecting rod 42, and the first flat surface 501 abuts against the locking surface 422, which is used to limit the relative position of the connecting rod 42 and the connecting plate 41.

[0046] Furthermore, it also includes a first elastic element 6, the two ends of which act on the inner wall of the slide groove 412 and the locking rod 5 respectively, to provide force for the locking rod 5 to approach the mounting hole 411.

[0047] In this embodiment, when installing the connecting rod 42 and the connecting plate 41, the first abutting part 421 of the connecting rod 42 is brought close to the mounting hole 411. At this time, the first abutting part 421 contacts the first inclined surface 502 of the locking rod 5. As the first abutting part 421 is pushed forward, the first inclined surface 502 is compressed, pushing the locking rod 5 to slide away from the connecting rod 42 along the slide groove 412. The first elastic element 6 is compressed and stores elastic potential energy. When the connecting rod 42 is installed in place, the first abutting part 421 and the first inclined surface 502 are released from contact, the first elastic element 6 releases its elastic potential energy, and pushes the locking rod 5 to move closer to the mounting hole 411, so that the first plane 501 of the locking rod 5 abuts against the locking surface 422 of the first abutting part 421, completing the stable connection between the connecting rod 42 and the connecting plate 41. This restricts the relative position between the connecting rod 42 and the connecting plate 41, ensuring the stability of the entire disassembly device 4 structure during operation.

[0048] Furthermore, it also includes a sliding ring 7, which is slidably disposed on the connecting rod 42. The sliding ring 7 has a second plane 701 on the side near the first plane 501 and a second inclined surface 702 on the other side. The second plane 701 is used to abut against the snap-fit ​​surface 422, and the second inclined surface 702 is used to abut against the first plane 501.

[0049] In this embodiment, the sliding ring 7 can slide freely on the connecting rod 42. A second flat surface 701 is machined on one side of the sliding ring 7, and a second inclined surface 702 is machined on the other side. When it is necessary to remove the connecting rod from the connecting plate, the operator applies an axial thrust to the connecting rod 42, causing the first abutment portion 421 to gradually extend out of the mounting hole 411. During this process, the connecting rod 42 drives the sliding ring 7 to move into the mounting hole 411 together. After the sliding ring 7 enters the mounting hole 411, its second flat surface 701 begins to contact the first inclined surface 502 of the locking rod 5. As the connecting rod 42 continues to be pushed, due to the interaction between the second flat surface 701 and the first inclined surface 502, the locking rod 5 will gradually move away from the connecting rod 42 along the groove 412 on the side wall of the mounting hole 411. When the pushing reaches a certain extent, the second flat surface 701 of the sliding ring 7 completely abuts against the locking surface 422 of the locking rod 5, and simultaneously, the first flat surface 501 of the locking rod 5 also abuts against the second inclined surface 702 of the sliding ring 7. At this point, the original locking state between the locking rod 5 and the first abutment part 421 is changed. Next, the operator pulls out the connecting rod 42. Due to the abutment restriction between the locking surface 422 and the second plane 701, after the first plane 501 and the second inclined surface 702 are released from abutment, the locking rod 5 will directly abut against the first abutment part 421 again under the action of the first elastic member 6. However, at this time, the abutment state allows the first abutment part 421 to smoothly disengage from the mounting hole 411, thereby completing the disassembly.

[0050] Furthermore, it also includes a second elastic element 8, the two ends of which act on the connecting rod 42 and the sliding ring 7 respectively, to provide a force for the sliding ring 7 to move away from the first abutment part 421.

[0051] In this embodiment, a second elastic element 8 is installed on the connecting rod 42. One end of the second elastic element 8 is fixed to the connecting rod 42, and the other end is connected to the sliding ring 7, which can apply a pulling force to the sliding ring 7 near the first abutment part 421. Under normal working conditions, the pulling force of the second elastic element 8 keeps the sliding ring 7 in its initial position away from the mounting hole 411, preventing the sliding ring 7 from moving towards the mounting hole 411 due to accidental collisions or slight vibrations, thus affecting the connection state between the locking rod 5 and the first abutment part 421. When it is necessary to operate the sliding ring 7 to adjust the position of the locking rod 5, the operator needs to overcome the spring tension to push the sliding ring 7 towards the mounting hole 411. After adjustment, the spring tension will cause the sliding ring 7 to automatically return to a relatively stable position, avoiding changes in the position of the sliding ring 7 due to external factors, which would again affect the connection state between the locking rod 5 and the first abutment part 421.

[0052] Furthermore, the end of the rotating rod 44 away from the screw feeder 1 has a gripping part 441 and also includes a push plate 9. The push plate 9 is disposed at the other end of the rotating rod 44, and the rotating rod 44 abuts against the screw feeder 1 through the push plate 9.

[0053] In this embodiment, a gripping part 441 is installed at the end of the rotating rod 44 away from the screw feeder 1, allowing the operator to comfortably and securely grip it and apply rotational force. A push plate 9 is installed at the other end of the rotating rod 44. The surface of the push plate 9 that contacts the screw feeder 1 is finely machined to ensure a large contact area and a smooth, flat surface. When disassembling the bearing inner ring 2, the operator grips the gripping part 441 with both hands and applies rotational force in a predetermined direction, causing the rotating rod 44 to begin rotating. The rotating rod 44 abuts against the corresponding part of the screw feeder 1 via the push plate 9. Due to the large area and flat surface design of the push plate 9, the axial force generated during rotation can be evenly transmitted to the screw feeder 1. This axial force pushes the force-bearing plate 43, thereby causing the connecting rod 42, connecting plate 41, and washer 3 to work together, gradually disengaging the washer 3 from the screw feeder 1, and ultimately causing the bearing inner ring 2 to smoothly disengage from the screw feeder 1.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A bearing disassembly fixture for a three-phase horizontal screw centrifuge, used to remove the bearing inner ring (2) from the screw feeder (1), characterized in that, The spiral feeder (1) has a first step (101), including: Washer (3), the washer (3) is slidably disposed on the spiral feeder (1), one side of the washer (3) abuts against the first step (101), and the other side abuts against the side wall of the inner ring (2) of the bearing; The disassembly device (4) is slidably disposed relative to the spiral feeder (1). One end of the disassembly device (4) is connected to the washer (3). After the disassembly device (4) slides, it drives the washer (3) to disengage from the spiral feeder (1), so that the inner ring (2) of the bearing disengages from the spiral feeder (1).

2. The bearing disassembly fixture for a three-phase horizontal screw centrifuge according to claim 1, characterized in that, The outer wall of the washer (3) has external threads, the outer diameter of the washer (3) is larger than the outer diameter of the inner ring (2) of the bearing, and the disassembly device (4) includes: The connecting plate (41) has an internal thread on its inner side, which is threaded to the outer wall of the washer (3); Connecting rod (42), there are several connecting rods (42), one end of the connecting rod (42) is connected to the connecting plate (41); Force plate (43), the force plate (43) is connected to the other end of the connecting rod (42); Rotating rod (44) is threadedly connected to the force plate (43). One end of the rotating rod (44) abuts against the screw pusher (1). After the rotating rod (44) rotates, it is used to provide the connecting plate (41) away from the first step (101).

3. The bearing disassembly fixture for a three-phase horizontal screw centrifuge according to claim 2, characterized in that, The connecting plate (41) has a mounting hole (411), and the side wall of the mounting hole (411) has a groove (412). The connecting rod (42) has a first abutment part (421) near the connecting plate (41), and the first abutment part (421) has a snap-fit ​​surface (422). The connecting rod also includes: A snap-fit ​​rod (5) is slidably disposed in the slide groove (412). One end of the snap-fit ​​rod (5) has a first plane (501) and a first inclined surface (502) and is located in the mounting hole (411). After the first abutting part (421) approaches the mounting hole (411), the first abutting part (421) abuts against the first inclined surface (502), pushing the snap-fit ​​rod (5) away from the connecting rod (42). After the first abutting part (421) releases from abutting against the first inclined surface (502), the snap-fit ​​rod (5) approaches the connecting rod (42), and the first plane (501) abuts against the snap-fit ​​surface (422), which is used to limit the relative position of the connecting rod (42) and the connecting plate (41).

4. The bearing disassembly fixture for a three-phase horizontal screw centrifuge according to claim 3, characterized in that, Also includes: The first elastic element (6) has two ends that act on the inner wall of the slide groove (412) and the snap-fit ​​rod (5) respectively, to provide force for the snap-fit ​​rod (5) to approach the mounting hole (411).

5. The bearing disassembly fixture for a three-phase horizontal screw centrifuge according to claim 3, characterized in that, Also includes: The sliding ring (7) is slidably disposed on the connecting rod (42). The sliding ring (7) has a second plane (701) on the side close to the first plane (501) and a second inclined surface (702) on the other side. The second plane (701) is used to abut against the snap-fit ​​surface (422), and the second inclined surface (702) is used to abut against the first plane (501).

6. The bearing disassembly fixture for a three-phase horizontal screw centrifuge according to claim 5, characterized in that, Also includes: The second elastic element (8) has two ends that act on the connecting rod (42) and the sliding ring (7) respectively, and is used to provide a force for the sliding ring (7) to move away from the first abutment (421).

7. The bearing disassembly fixture for a three-phase horizontal screw centrifuge according to claim 2, characterized in that, The rotating rod (44) has a gripping part (441) at the end away from the screw feeder (1), and also includes: Push plate (9) is disposed at the other end of the rotating rod (44), and the rotating rod (44) abuts against the spiral feeder (1) through the push plate (9).

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