Centrifugal pump coupling

Abstract

The utility model relates to a coupling technical field especially relates to a centrifugal pump coupling. Its technical scheme includes a pair of connecting sleeve, still includes first fastening disc and second fastening disc, fixedly connected on corresponding connecting sleeve, the support sleeve on second fastening disc, first fastening disc fixedly connected with the threaded rod inserted into support sleeve, the utility model discloses the cooperation of connecting sleeve, first fastening disc, second fastening disc, threaded rod, nut, threaded plug, threaded sleeve etc. structure, when using coupling, need not to disassemble independent connecting part, by loosening nut, makes the threaded rod of first fastening disc along the inner convex strip in the support sleeve of second fastening disc sliding adjustment interval, avoids the loss of component. After adjusting, borrow the tool and tighten the threaded sleeve with hexagonal recess, make it cooperate with the support boss and lock, need not to disassemble component one by one, thereby realizes the simplification of operation, shortens the time, promotes the maintenance efficiency under the scene of frequent adjustment.

Description

Technical Field

[0001] This utility model relates to the field of coupling technology, and in particular to a centrifugal pump coupling. Background Technology

[0002] Centrifugal pump couplings, as the core transmission components connecting the pump shaft and the motor shaft, are often referred to as "back-to-back wheels." Their core functions are not only to stably transmit motor torque to drive the pump body, but also to help buffer the vibrations generated during equipment operation and compensate for slight misalignments between the two shafts. They are key components to ensure the efficient and stable operation of the pump unit.

[0003] In existing technologies, such as the centrifugal pump coupling disclosed in Chinese Patent No. CN217814097U, adjusting the distance between the two shafts requires multiple independently configured connecting parts. This design has obvious limitations: when it is necessary to reduce the distance between the two shafts and remove one of the connecting parts, because the structures of each connecting part are relatively dispersed and their sizes are usually small, in the complex working environment of industrial sites (such as narrow spaces, numerous components, and dense personnel operation processes), the removed connecting part is easily overlooked by operators, leading to its loss. This not only increases the cost of spare parts but also easily delays the equipment commissioning or maintenance schedule.

[0004] Furthermore, when disassembling and assembling multiple connecting parts of this type of coupling, the screws and nuts for each connecting part must be disassembled and assembled individually. Due to structural design limitations, operators must align, rotate, tighten, or disassemble each set of screws and nuts separately, making batch or simultaneous operations impossible. This results in a cumbersome and time-consuming disassembly and assembly process, significantly reducing equipment maintenance efficiency, especially in scenarios requiring frequent adjustments to the distance between the two shafts. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a centrifugal pump coupling.

[0006] The technical solution of this utility model is as follows: A centrifugal pump coupling includes a pair of connecting sleeves, and further includes: a first fastening plate and a second fastening plate, which are fixedly connected to the corresponding connecting sleeves; a support sleeve located on the second fastening plate, and a threaded rod inserted into the support sleeve is fixedly connected to the first fastening plate, and a nut is helically sleeved on the threaded rod to abut against the end of the inner protrusion away from the second fastening plate; a fixing mechanism is provided on the first fastening plate and the second fastening plate, and the fixing mechanism is used to lock the first fastening plate and the second fastening plate after the spacing is adjusted.

[0007] Optionally, the fixing mechanism includes a pair of threaded rods fixedly connected to the second fastening plate. The first fastening plate has a pair of sliding through holes for the threaded rods to slide through. The ends of the pair of threaded rods away from the second fastening plate are helically fitted with threaded sleeves whose ends abut against the first fastening plate. The end of the support sleeve away from the threaded rod is fixedly connected to the second fastening plate.

[0008] Optionally, a pair of inner protruding strips are fixedly connected inside the support sleeve, and a pair of arc-shaped grooves are provided on the threaded rod for the inner protruding strips to slide into.

[0009] Optionally, a pair of support protrusions are fixedly connected to the end of the first fastening disc away from the threaded rod, and the support protrusions are slidably engaged with the threaded sleeve.

[0010] Optionally, the outer wall of the threaded sleeve is provided with a plurality of hexagonal grooves arranged in a circumferential array.

[0011] Optionally, the end of the threaded insert away from the second fastening disc is fixedly connected with a locking block to hold the threaded sleeve.

[0012] Optionally, the pair of threaded inserts, locking blocks, sliding holes, and supporting protrusions are all symmetrically arranged with the supporting sleeve as the center.

[0013] In summary, this application includes at least one of the following beneficial technical effects: This invention utilizes the cooperation of a connecting sleeve, a first fastening plate, a second fastening plate, a threaded rod, a nut, a threaded insert, and a threaded sleeve. When using the coupling, there is no need to disassemble the individual connecting parts. By loosening the nut, the threaded rod of the first fastening plate slides along the inner protrusion within the support sleeve of the second fastening plate to adjust the spacing, preventing component loss. After adjustment, the threaded sleeve with hexagonal grooves is tightened with a tool to lock it in place with the support protrusion. This eliminates the need to disassemble and assemble components individually, simplifying operation, shortening time, and improving maintenance efficiency in scenarios requiring frequent adjustments. Attached Figure Description

[0014] Figure 1 A structural schematic diagram of a centrifugal pump coupling according to this utility model is provided; Figure 2 for Figure 1 A schematic diagram of the split structure; Figure 3 for Figure 2 A partial structural diagram.

[0015] Reference numerals: 1. Connecting sleeve; 2. First fastening disc; 21. Sliding perforation; 22. Supporting protrusion; 23. Threaded rod; 24. Arc groove; 25. Nut; 3. Second fastening disc; 31. Support sleeve; 32. Inner protrusion; 33. Threaded insert; 34. Locking block; 4. Threaded sleeve; 41. Hexagonal groove. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0017] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0018] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a 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 a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0022] Example like Figures 1 to 3 As shown, the centrifugal pump coupling proposed in this utility model includes a pair of connecting sleeves 1, and a first fastening plate 2 and a second fastening plate 3, which are fixedly connected to the corresponding connecting sleeves 1. A support sleeve 31 is located on the second fastening plate 3, and the support sleeve 31 internally accommodates a threaded rod 23 and an inner protrusion 32, providing support and guidance for the engagement of the two fastening plates. A threaded rod 23 inserted into the support sleeve 31 is fixedly connected to the first fastening plate 2. The threaded rod 23, through engagement with a nut 25, adjusts and restricts the relative position of the two fastening plates. A nut 25 is helically fitted on the threaded rod 23, abutting against the end of the inner protrusion 32 away from the second fastening plate 3. The nut 25 abuts against the end of the inner protrusion 32 away from the second fastening plate 3, assisting in fixing the adjusted spacing between the two fastening plates. A fixing mechanism is provided on the first fastening plate 2 and the second fastening plate 3, and the fixing mechanism is used to lock the first fastening plate 2 and the second fastening plate 3 after the spacing adjustment.

[0023] Among them, such as Figures 1 to 3 As shown, the fixing mechanism includes a pair of threaded rods 33 fixedly connected to the second fastening plate 3. The threaded rods 33 are screwed into the threaded sleeve 4, providing a connection structure for locking the two fastening plates. The first fastening plate 2 has a pair of sliding through holes 21 through which the threaded rods 33 slide. The sliding through holes 21 provide space for the relative movement of the two fastening plates, ensuring smooth spacing adjustment. The ends of the pair of threaded rods 33 away from the second fastening plate 3 are screwed onto the threaded sleeve 4, the ends of which abut against the first fastening plate 2. The ends of the threaded sleeve 4 abut against the first fastening plate 2, achieving locking of the first fastening plate 2 and the second fastening plate 3 after spacing adjustment. The end of the support sleeve 31 away from the threaded rod 23 is fixedly connected to the second fastening plate 3. The outer wall of the threaded sleeve 4 has multiple hexagonal grooves 41 arranged in a circumferential array. The hexagonal grooves 41 are for inserting tools (hexagonal wrenches), making it convenient for operators to tighten or loosen the threaded sleeve 4, improving the convenience of disassembly and assembly operations. Each threaded insert 33 has a locking block 34 fixedly connected to the end away from the second fastening plate 3 to lock the threaded sleeve 4. The locking block 34 prevents the threaded sleeve 4 from falling off the threaded insert 33 and ensures the integrity of the locking mechanism. The pair of threaded inserts 33, the locking block 34, the sliding through hole 21 and the support protrusion 22 are all symmetrically arranged with the support sleeve 31 as the center.

[0024] In addition, such as Figures 1 to 3 As shown, a pair of inner protruding strips 32 are fixedly connected inside the support sleeve 31. The inner protruding strips 32 restrict the relative rotation between the threaded rod 23 and the support sleeve 31, ensuring transmission stability. A pair of arc-shaped grooves 24 are provided on the threaded rod 23 for the inner protruding strips 32 to slide into. The arc-shaped grooves 24 achieve a guiding fit between the threaded rod 23 and the support sleeve 31, preventing the two fastening discs from rotating relative to each other.

[0025] It is worth noting that, such as Figures 1 to 3As shown, a pair of support protrusions 22 are fixedly connected to the end of the first fastening disc 2 away from the threaded rod 23. The support protrusions 22 and the threaded rod 33 work together with the threaded sleeve 4 to abut against the first fastening disc 2, enhancing the locking stability after the spacing is adjusted. The support protrusions 22 and the threaded sleeve 4 are slidably engaged.

[0026] In this embodiment, when using the centrifugal pump coupling, firstly, a pair of connecting sleeves 1 are connected to the centrifugal pump shaft and the motor shaft respectively. Then, the first fastening plate 2 and the second fastening plate 3 are moved until the distance between the first fastening plate 2 and the second fastening plate 3 is adjusted to the target value. At the same time, a pair of threaded inserts 33 on the second fastening plate 3 will pass through the sliding through holes 21 on the first fastening plate 2. At this time, the threaded sleeve 4 is only screwed onto the pair of threaded inserts 33. Next, simply rotate the nut 25 on the threaded rod 23. The nut 25 abuts against the end of the support sleeve 31 away from the second fastening plate 3. Finally, with the help of a tool, insert it into the hexagonal groove 41 of the threaded sleeve 4 and tighten the threaded sleeve 4. When the end of the threaded sleeve 4 is tightly against the first fastening plate 2, the first fastening plate 2 and the second fastening plate 3 after the distance adjustment can be locked, ensuring stable transmission of the two shafts.

[0027] When it is necessary to readjust the distance between the centrifugal pump shaft and the motor shaft, simply loosen the threaded sleeve 4 in the reverse direction to disengage it from the support protrusion 22. Then, rotate the nut 25 along the threaded rod 23 away from the support sleeve 31 to adjust the relative position of the first fastening plate 2 and the second fastening plate 3. After adjustment, repeat the above locking steps. The entire process does not require disassembling the independent connecting part, avoiding the loss of parts. Furthermore, the cooperation between the threaded sleeve 4 and the threaded rod 33, and the nut 25 and the support sleeve 31, simplifies the disassembly and assembly operations and improves maintenance efficiency.

[0028] The preferred embodiments of this utility model described above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A centrifugal pump coupling comprising a pair of connecting sleeves (1), characterized in that, Also includes: The first fastening plate (2) and the second fastening plate (3) are fixedly connected to the corresponding connecting sleeve (1); A support sleeve (31) is located on the second fastening plate (3). A threaded rod (23) is fixedly connected to the first fastening plate (2) and inserted into the support sleeve (31). A nut (25) is screwed on the threaded rod (23) to abut against the inner protrusion (32) away from the end of the second fastening plate (3). A fixing mechanism is provided on the first fastening plate (2) and the second fastening plate (3), and the fixing mechanism is used to lock the first fastening plate (2) and the second fastening plate (3) after the spacing is adjusted; The fixing mechanism includes a pair of threaded rods (33) fixedly connected to the second fastening plate (3). The first fastening plate (2) has a pair of sliding through holes (21) for the threaded rods (33) to slide through. The end of the pair of threaded rods (33) away from the second fastening plate (3) is screwed with a threaded sleeve (4) whose end abuts against the first fastening plate (2). The end of the support sleeve (31) away from the threaded rod (23) is fixedly connected to the second fastening plate (3).

2. A centrifugal pump coupling according to claim 1, wherein, The support sleeve (31) has a pair of inner protruding strips (32) fixedly connected inside, and the threaded rod (23) has a pair of arc-shaped grooves (24) for the inner protruding strips (32) to slide into.

3. A centrifugal pump coupling as claimed in claim 1, wherein, The first fastening disc (2) is fixedly connected to a pair of support protrusions (22) at one end away from the threaded rod (23), and the support protrusions (22) are slidably sleeved with the threaded sleeve (4).

4. A centrifugal pump coupling as claimed in claim 1, wherein, The outer wall of the threaded sleeve (4) is provided with a plurality of hexagonal grooves (41) arranged in a circumferential array.

5. A centrifugal pump coupling as claimed in claim 1, wherein, The threaded insert (33) is fixedly connected to a locking block (34) that locks the threaded sleeve (4) at the end away from the second fastening plate (3).

6. A centrifugal pump coupling according to claim 5, wherein, The pair of threaded inserts (33), locking blocks (34), sliding through holes (21) and supporting protrusions (22) are all symmetrically arranged with the supporting sleeve (31) as the center.

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