Centrifugal pump end cover dismounting device

Abstract

The utility model relates to the technical field of centrifugal pump end cover dismounting and mounting, in particular to a centrifugal pump end cover dismounting and mounting device which comprises a centrifugal pump body, the centrifugal pump body is arranged on a mounting base, and one end of the centrifugal pump body is connected with a cover body part. The cover body part comprises an end cover and a bolt piece, the end cover is connected with one end of the centrifugal pump body, and the end cover and the centrifugal pump body are connected together through the bolt piece. The end cover is sleeved with a fixed sleeve plate, an extending plate is arranged on the fixed sleeve plate, the extending direction of the extending plate is the direction in which the centrifugal pump body faces the end cover, and the extending tail end of the extending plate is located in the space outside the end cover. A guide part is rotationally connected to the extending plate and penetrates through the plate face of the extending plate, the penetrating direction is the direction, facing the end cover, of the centrifugal pump body, a butt joint is arranged at the end, close to the end cover, of the guide part, corresponds to the bolt part in position, and is matched with a bolt head in the bolt part in shape. According to the centrifugal pump, the technical problem that the end cover can be quickly disassembled and assembled without disassembling and hoisting the centrifugal pump is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pump end cover disassembly and assembly, in particular to a centrifugal pump end cover disassembly and assembly device. Background Art

[0002] A centrifugal pump uses the centrifugal force generated by the rotation of its impeller to transport liquid. Its main components include the impeller, pump casing, pump shaft, bearings, sealing rings, and shaft seal. The impeller rotates at high speed within the pump casing, causing the liquid to be flung outward by centrifugal force, generating pressure energy. This pressure energy overcomes the resistance of the suction line and transports the medium to the pump outlet.

[0003] Due to the corrosive nature of some transport media or structural failures of existing centrifugal pumps, when problems occur with the centrifugal pump, the end cover on the centrifugal pump needs to be quickly removed to facilitate maintenance of the interior of the centrifugal pump.

[0004] The currently published patent is titled "A Centrifugal Pump End Cover Disassembly and Assembly Unit and Centrifugal Pump End Cover Disassembly and Assembly Device," and is a Chinese utility model patent with the publication number CN213226020U. This patent includes a horizontal support rod that passes through a perforation in the end cover and is threadedly connected to a threaded blind hole in the outer barrel. The horizontal support rod has a threaded section that is threadedly connected to the outer barrel of the centrifugal pump, and also has a sliding section for the centrifugal pump end cover to slide axially along the horizontal support rod. The bottom of the vertical support rod is located on the ground, and the top is connected to the horizontal support rod to keep the horizontal support rod horizontal. This device eliminates the need for a manual hoist and crane during disassembly and assembly, and does not require a large number of staff, while also increasing disassembly and assembly speed.

[0005] Although the device can reduce the number of disassembly and assembly personnel and speed up the disassembly and assembly of the end cover, in actual application, it is still necessary to manually loosen the bolts before the horizontal support rod can be inserted into the perforation of the end cover to separate the end cover. The separation process is relatively complicated, and the entire centrifugal pump needs to be disassembled and lifted, making it difficult to quickly disassemble and assemble the end cover. Utility Model Content

[0006] The purpose of the present application is to provide a centrifugal pump end cover disassembly and assembly device, which solves the technical problem of quickly disassembling and assembling the end cover of the centrifugal pump without disassembling and lifting it.

[0007] In order to solve the above technical problems, the solution adopted by this application is as follows:

[0008] A centrifugal pump end cover disassembly and assembly device comprises a mounting base, a centrifugal pump body and a cover body portion. The centrifugal pump body is arranged on the mounting base, and one end of the centrifugal pump body is connected to the cover body portion.

[0009] Preferably, the cover body includes an end cover and a bolt member, and the end cover is connected to the pump casing at one end of the centrifugal pump body, and the two are connected together by the bolt member.

[0010] Preferably, the end cover is outer-connected with a fixed sleeve, and an extension plate is provided on the fixed sleeve. The extension plate extends in the direction of the centrifugal pump body toward the end cover, and the extension end of the extension plate is located in the space outside the end cover position.

[0011] Preferably, a guide member is rotatably connected to the extension plate, and the guide member passes through the plate surface of the extension plate, and the penetration direction is the direction of the centrifugal pump body toward the end cover. A docking joint is provided at one end of the guide member close to the end cover, and the docking joint corresponds to the position of the bolt member, and the docking joint matches the shape of the bolt head in the bolt member.

[0012] Preferably, the fixed sleeve includes a movable plate, a fixed plate and a locking piece.

[0013] Preferably, the fixed plate and the movable plate are respectively sleeved on the outer wall of the end cover, one end of the fixed plate is hinged to one end of the movable plate, and the other end of the fixed plate is connected to the other end of the movable plate through a locking member.

[0014] Preferably, the locking member is configured as a bolt and nut fastening structure or a snap-fit ​​structure.

[0015] Preferably, the extension plate includes a connecting column, an arc-shaped plate and an arc-shaped sliding groove.

[0016] Preferably, one end of the connecting column is fixedly mounted on the plate surface of the fixed plate, and the other end of the connecting column is arranged on the plate surface of the arc plate, and the length direction of the connecting column is along the direction of the centrifugal pump body toward the end cover.

[0017] Preferably, the shadow of the curved plate corresponds to the position of the fixed plate.

[0018] Preferably, an arc-shaped chute runs through the plate surface of the arc-shaped plate, and the bolt member provided on the end cover is covered by the projected shadow of the arc-shaped chute.

[0019] Preferably, the arc-shaped slide groove is slidably provided with a guide member, and the guide member passes through the arc-shaped plate.

[0020] Preferably, the guide member includes a guide cylinder, a fixing nut and a guide post.

[0021] Preferably, the guide cylinder is slidably installed in the arc-shaped slide groove, and a rib is provided at the outer edge of one end of the guide cylinder, which abuts against one side of the arc plate. The other end of the guide cylinder passes through the arc-shaped slide groove, and a thread is provided on the outer wall of the passing end. The thread on the outer wall of the passing end is matched with a fixing nut, and the fixing nut abuts against the other half of the arc plate.

[0022] Preferably, the guide cylinder has a through hole extending along its length, and a guide post is slidably provided in the through hole.

[0023] Preferably, the end of the guide column away from the bolt member is set as a square block, a rotating rod is slidably provided on the square block, a square groove is provided in the rotating rod, and the square groove matches the shape of the square block.

[0024] Preferably, one end of the guide column close to the bolt member is threadedly connected to a butt joint.

[0025] The technical solution of this application has at least the following advantages and beneficial effects:

[0026] In the utility model, by providing an extension plate and a guide cylinder, the disassembly position of the loosening bolt is extended, thereby increasing the working space for the worker to loosen the bolt, thereby quickly disassembling and assembling the end cover;

[0027] In the utility model, by providing a fixed sleeve, the movement of the end cover is temporarily restricted when the bolt is loosened, so as to avoid the end cover being pulled out when the bolt is twisted, causing the end cover to slip and injure workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the present utility model.

[0029] Figure 2 It is a left-side structural schematic diagram of the present invention.

[0030] Figure 3 It is a schematic cross-sectional structural diagram of the present utility model.

[0031] Figure 4 It is a schematic cross-sectional structural diagram of the guide tube in the utility model.

[0032] Figure 5 It is a front view structural schematic diagram of the present utility model.

[0033] Figure 6 It is a schematic cross-sectional structural diagram of the butt joint in the present utility model.

[0034] Figure 7 This is a structural diagram of another type of bolt head in the present invention.

[0035] Figure 8 This is a schematic cross-sectional view of another type of butt joint in the present invention.

[0036] In the figure: 1-mounting base, 2-centrifugal pump body, 3-cover body, 301-end cover, 302-bolt, 4-fixed sleeve, 401-movable plate, 402-fixed plate, 403-mounting plate, 404-screw hole, 5-extension plate, 501-connecting column, 502-arc plate, 503-arc slide, 6-guide, 601-guide cylinder, 602-fixed nut, 603-guide column, 604-square block, 605-rotating rod, 7-joint. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it does not require further definition or explanation in subsequent figures. Terms such as "center," "upper," "lower," "inner," and "outer" indicate positions or locations based on the positions or locations shown in the figures, or the positions or locations in which the product is typically placed when in use. These terms are used solely for ease of description and simplification of the present application. They do not indicate or imply that the device or component referred to must have a specific position, be constructed, or operate in a specific orientation, and are not to be construed as limiting the present application. It should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "mounted," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct connections or indirect connections through an intermediary; or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this application in specific contexts.

[0039] Example

[0040] Please refer to Figures 1-6 The utility model provides a centrifugal pump end cover disassembly and assembly device, including a mounting base 1, a centrifugal pump body 2, a cover body portion 3, a fixed sleeve 4, an extension plate 5, a guide member 6, and a docking joint 7.

[0041] In the prior art, a centrifugal pump body 2 is generally fixed on the ground or on a mounting base 1 with a certain height, and one end of the centrifugal pump body 2 is connected to a cover portion 3 .

[0042] The cover portion 3 includes an end cover 301 and a bolt member 302. The end cover 301 abuts against one end surface of the centrifugal pump body 2, and the two are installed together by the bolt member 302 (bolts, nuts and washers constitute the bolt member 302).

[0043] When a component inside the centrifugal pump fails, a worker can loosen the bolts 302 , separate the end cover 301 , and repair the inside of the centrifugal pump body 2 .

[0044] In this embodiment, the end cover 301 is sleeved with a fixing sleeve plate 4, which facilitates temporary fixing of the end cover 301 at the existing position after loosening the bolt member 302, so as to avoid the sudden sliding of the heavy end cover 301 after loosening the bolt member 302, thereby causing a safety accident.

[0045] Further, the fixing sleeve plate 4 is provided with an extension plate member 5, which extends in the direction from the centrifugal pump body 2 to the end cover 301, and the extension plate member 5 extends out of the end cover 301, so that it is not vertically positioned with the end cover 301, and the extension plate member 5 is located at the pipeline outside the end cover 301, where the external space is relatively open.

[0046] Further, the extension plate member 5 is rotatably connected with a guide member 6, which penetrates the plate surface of the extension plate member 5 in the direction from the centrifugal pump body 2 to the end cover 301, and the end close to the end cover 301 is provided with a butt joint 7, which corresponds to the position of the bolt member 302 and matches the shape of the bolt head in the bolt member 302.

[0047] Preferably, when the staff loosens the bolt member 302 on the end cover 301, the bolt member 302 located below the centrifugal pump body 2 is difficult to be twisted by the wrench because it is close to the ground or the mounting base 1, which affects the disassembly efficiency. By moving the position of the twisted bolt member 302 to the open space outside the end cover 301 through the extension plate member 5 and the slidingly penetrating guide member 6, it is convenient for the long wrench and other tools to work, and the butt joint 7 on the guide member 6 matches the shape of the bolt head in the bolt member 302, so that the staff can twist the guide member 6 to twist the bolt member 302, thereby quickly realizing the disassembly of the end cover 301.

[0048] In this embodiment, the fixing sleeve plate 4 includes a movable plate 401, a fixed plate 402 and a locking member;

[0049] Specifically, the fixed plate 402 and the movable plate 401 are sleeved on the outer wall of the end cover 301 and cover the connecting gap between the end cover 301 and the centrifugal pump body 2, one end of the fixed plate 402 is hingedly connected with one end of the movable plate 401, and the other end of the fixed plate 402 is connected with the other end of the movable plate 401 through the locking member. The fixed plate 402 and the movable plate 401 are both arc-shaped plate members, and when the two plate members are connected together, they are matched and sleeved on the outside of the end cover 301.

[0050] When the fixing sleeve plate 4 is installed at the end cover 301, the fixed plate 402 is first sleeved at the bottom of the end cover 301, then the movable plate 401 above the end cover 301 is closed, the movable plate 401 and the fixed plate 402 are completely sleeved on the outer wall of the end cover 301, and then the locking member is locked.

[0051] Because the fixing sleeve 4 is located in the gap between the end cover 301 and the centrifugal pump body 2, when the staff loosens all the bolts 302, the end cover 301 will not slide out at will due to the clamping force of the fixing sleeve 4. This prevents the staff from accidentally pulling out the end cover 301 when loosening the last bolt 302, causing the end cover 301 to suddenly slide out and injure the staff. When the end cover 301 needs to be removed, the locking piece is opened to make the end cover 301 lose the clamping force of the fixing sleeve 4.

[0052] Among them, the locking member is preferably set as a bolt and nut fastening structure or a snap-fit ​​structure, both of which can achieve quick loosening and locking functions.

[0053] It is worth noting that the fixed plate 402 does not necessarily have to be located at the bottom of the end cover 301, but can also be located at the top of the end cover 301. When the fixed plate 402 is located at the top of the end cover 301, the movable plate 401 is located at the bottom of the end cover 301, and the staff can loosen the bolts 302 at the top of the end cover 301.

[0054] In this embodiment, the extension plate 5 includes a connecting column 501 , a curved plate 502 and a curved sliding groove 503 .

[0055] Specifically, one end of the connecting column 501 is fixedly mounted on the surface of the fixed plate 402, and the other end of the connecting column 501 is fixed on the surface of the curved plate 502 to fix the position of the curved plate 502. The length direction of the connecting column 501 is along the direction of the centrifugal pump body 2 toward the end cover 301, so that the curved plate 502 extends outside the end cover 301.

[0056] The shadow of the curved plate 502 corresponds to the position of the fixed plate 402. An arc-shaped slide groove 503 runs through the surface of the curved plate 502. The bolt member 302 set on the end cover 301 is covered by the projected shadow of the arc-shaped slide groove 503. A guide member 6 is slidingly set in the arc-shaped slide groove 503. The guide member 6 passes through the curved plate 502 so that the position of the guide member 6 corresponds to the position of the bolt member 302.

[0057] Among them, all the bolt members 302 under the shadow of the plate surface of the arc-shaped plate 502 are matched with a corresponding arc-shaped sliding groove 503 and a guide member 6.

[0058] The guide member 6 includes a guide cylinder 601 , a fixing nut 602 and a guide post 603 .

[0059] Specifically, the guide cylinder 601 is slidably installed in the arc-shaped slide groove 503. A rib is provided at the outer edge of one end of the guide cylinder 601, and the rib abuts against one side of the arc plate 502. The other end of the guide cylinder 601 passes through the arc-shaped slide groove 503, and a thread is provided on the outer wall of the passing end. The thread on the outer wall of the passing end is matched with a fixing nut 602, and the fixing nut 602 abuts against the other half of the arc plate 502.

[0060] Preferably, because the locking position of the bolt member 302 is not precise, there will be a certain position deviation between the positions of the bolt member 302 on the end cover 301 of the same model. Therefore, in order to ensure that the docking joint 7 can completely match the bolt head of the bolt member 302, the fixing nut 602 can be loosened, and then the guide cylinder 601 can be slid in the arc-shaped groove 503 so that the guide cylinder 601 corresponds to the position of the bolt member 302 here, and then the fixing nut 602 can be tightened to fix the guide cylinder 601 in the arc-shaped groove 503 and no longer slide.

[0061] The guide cylinder 601 has a through hole extending along its length, and a guide post 603 is slidably inserted into the through hole.

[0062] The end of the guide post 603 away from the bolt 302 is provided with a square block 604. A rotating rod 605 is slidably mounted on the square block 604. The rotating rod 605 has a square slot that matches the shape of the square block 604. There is only one rotating rod 605. After the operator engages one guide post 603 with the rotating rod 605 to loosen the bolt 302, the rotating rod 605 is disengaged and engaged with the next guide post 603 to loosen the bolt 302.

[0063] The end of the guide column 603 close to the bolt member 302 is threadedly connected to the docking joint 7, so that the docking joint 7 can be quickly disassembled and replaced with a new docking joint 7 (because the docking joint 7 needs to frequently match the bolt head of the bolt member 302 and is subjected to the torque generated when the bolt head is twisted, it is prone to wear).

[0064] Please refer to Figure 5-Figure 8 In this embodiment, there is more than one type of connector 7 and bolt member 302 .

[0065] Specifically, the bolt head of the bolt member 302 may be in the shape of an external hexagonal bolt head, and in this case, the corresponding groove on the butt joint 7 is a hexagonal groove.

[0066] The bolt head of the bolt member 302 may be in the shape of a hexagonal cylindrical bolt head, and in this case, it may mate with a corresponding hexagonal protrusion on the joint 7 .

[0067] Thus far, various embodiments of the present invention have been described in detail. To avoid obscuring the concept of the present invention, some details known in the art have been omitted. Based on the above description, those skilled in the art will fully understand how to implement the technical solutions of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A centrifugal pump end cover disassembly and assembly device, comprising a mounting base (1), a centrifugal pump body (2), and a cover portion (3), wherein the centrifugal pump body (2) is arranged on the mounting base (1), and one end of the centrifugal pump body (2) is connected to the cover portion (3); The cover portion (3) includes an end cover (301) and a bolt member (302), and the end cover (301) is connected to the pump casing at one end of the centrifugal pump body (2), and the two are connected together by the bolt member (302); It is characterized by ； The end cover (301) is externally connected to a fixed sleeve (4), and an extension plate (5) is provided on the fixed sleeve (4). The extension plate (5) extends in the direction from the centrifugal pump body (2) toward the end cover (301), and the extension end of the extension plate (5) is located in the space outside the end cover (301). The extension plate (5) is rotatably connected to a guide member (6), which penetrates the plate surface of the extension plate (5) in a direction from the centrifugal pump body (2) toward the end cover (301). A docking joint (7) is provided at one end of the guide member (6) close to the end cover (301), and the docking joint (7) corresponds to the position of the bolt member (302), and the shape of the docking joint (7) matches that of the bolt head in the bolt member (302).

2. A centrifugal pump end cover disassembly and assembly device according to claim 1, characterized in that: The fixed sleeve (4) comprises a movable plate (401), a fixed plate (402) and a locking member; The fixed plate (402) and the movable plate (401) are respectively sleeved on the outer wall of the end cover (301), one end of the fixed plate (402) is hinged to one end of the movable plate (401), and the other end of the fixed plate (402) is connected to the other end of the movable plate (401) through a locking member.

3. A centrifugal pump end cover disassembly and assembly device according to claim 2, characterized in that: The locking member is configured as a bolt and nut fastening structure or a snap-fit ​​structure.

4. A centrifugal pump end cover disassembly and assembly device according to claim 1, characterized in that: The extension plate (5) comprises a connecting column (501), an arc-shaped plate (502) and an arc-shaped sliding groove (503); One end of the connecting column (501) is fixedly mounted on the surface of the fixed plate (402), and the other end of the connecting column (501) is arranged on the surface of the arc plate (502). The length direction of the connecting column (501) is along the direction of the centrifugal pump body (2) toward the end cover (301). The shadow of the curved plate (502) corresponds to the position of the fixed plate (402); An arc-shaped chute (503) is formed on the surface of the arc-shaped plate (502), and the bolt member (302) provided on the end cover (301) is covered by the shadow cast by the arc-shaped chute (503); A guide member (6) is slidably provided in the arc-shaped slide groove (503), and the guide member (6) passes through the arc-shaped plate (502).

5. A centrifugal pump end cover disassembly and assembly device according to claim 4, characterized in that: The guide member (6) comprises a guide cylinder (601), a fixing nut (602) and a guide post (603); The guide tube (601) is slidably installed in the arc-shaped slide groove (503). A retaining edge is provided at the outer edge of one end of the guide tube (601), and the retaining edge abuts against one side of the arc-shaped plate (502). The other end of the guide tube (601) passes through the arc-shaped slide groove (503). A thread is provided on the outer wall of the passing end. The thread on the outer wall of the passing end matches a fixing nut (602), and the fixing nut (602) abuts against the other half of the arc-shaped plate (502). The guide cylinder (601) is penetrated by a through hole along the length direction, and a guide post (603) is slidably provided in the through hole.

6. A centrifugal pump end cover disassembly and assembly device according to claim 5, characterized in that: The end of the guide column (603) away from the bolt member (302) is set as a square block (604), and a rotating rod (605) is slidably set on the square block (604). A square groove is set in the rotating rod (605), and the shape of the square groove matches that of the square block (604).

7. The centrifugal pump end cover disassembly and assembly device according to claim 5, characterized in that: One end of the guide column (603) close to the bolt member (302) is threadedly connected to a butt joint (7).

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