A dismounting aid for centrifugal pumps

Abstract

The application discloses a kind of dismounting auxiliary equipment of centrifugal pump.Two recesses are opened in bearing base, the bottom of first recess is buffer groove and installs buffer support mechanism;Two sides of the top of first recess are movable groove, second recess is driving groove, clamping adjusting mechanism is installed in movable groove and driving groove, clamping adjusting mechanism and two limit plates are connected;Mounting plate is installed on buffer support mechanism, centrifugal pump body is placed on mounting plate and is located between two limit plates, and centrifugal pump body is clamped by limit plate.The application can fix mounting plate conveniently, reduce the time required for dismounting;It can effectively reduce the loss of movable block and bidirectional screw caused by pump shaft vibration, avoid causing bidirectional screw to slide silk;It can reduce the vibration caused when centrifugal pump impeller is disassembled, ensure its concentricity, so that it can be in contact with pump middle section accurately, reduce dismounting difficulty, improve dismounting efficiency, help to realize fast, accurate, safe dismounting, shorten maintenance time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of disassembling centrifugal pumps, and more particularly to a disassembling auxiliary tool for multistage centrifugal pumps. BACKGROUND

[0002] A centrifugal pump is a kind of rotary machinery, and is a general device for conveying fluid media, which is widely used in the fields of petroleum, chemical industry, water conservancy, etc.

[0003] A multistage centrifugal pump is a pump with two or more than two impellers connected in series. During the disassembling process of the multistage centrifugal pump, if the pump is swung or deviated, the concentricity of the pump will be affected, and therefore, the precision of the disassembling angle, height and component matching position is required.

[0004] At present, the disassembling process is usually adjusted manually, which consumes time and labor, and at the same time, the surface of the bearing cap and the pump shaft thread is easily damaged, which seriously affects the stable operation of the pump and the disassembling quality.

[0005] Therefore, there is a need for a disassembling auxiliary tool for multistage centrifugal pumps to solve the above problems. SUMMARY

[0006] In order to solve the above problems, the present application provides a centrifugal pump disassembling auxiliary device which is convenient to disassemble, meets the precision and has a buffering effect.

[0007] The present application is a centrifugal pump disassembling auxiliary device, which aims to more conveniently disassemble the centrifugal pump and improve the precision of the disassembling process (relative to the coarse adjustment and fine adjustment of the horizontal and vertical directions of the centrifugal pump body), and is not for disassembling the centrifugal pump body.

[0008] The centrifugal pump disassembling auxiliary device provided by the present application includes the following steps:

[0009] The present application includes a bearing base, a clamping and adjusting mechanism, a buffering and supporting mechanism, a limiting plate and a mounting plate. The bearing base is provided with a first recess and a second recess. The bottom of the first recess serves as a buffering groove and the buffering and supporting mechanism is installed in the buffering groove. The top of the first recess is provided with two movable grooves on both sides, and the second recess is located on the side of the first recess and serves as a driving groove. The clamping and adjusting mechanism is installed in the movable grooves and the driving groove, and the clamping and adjusting mechanism is connected with the two limiting plates. The mounting plate is installed on the buffering and supporting mechanism, the centrifugal pump body is placed on the mounting plate and located between the two limiting plates, and the centrifugal pump body is clamped by the limiting plates.

[0010] The buffer support mechanism comprises a buffer plate and a buffer limiting component, the bottom of the buffer groove is provided with a plurality of buffer limiting components, the buffer plate is horizontally arranged on the plurality of buffer limiting components, and the middle of the upper surface of the mounting plate is fixed with the buffer plate; each buffer limiting component comprises a limiting column and a buffer spring, the buffer spring is sleeved outside the limiting column, the lower end of the buffer spring is connected with the bottom surface of the buffer groove, and the upper end is connected with the bottom surface of the buffer plate.

[0011] The clamping adjusting mechanism comprises a rotating shaft, a rotating handle, a conical gear one and a moving adjusting component; the rotating shaft is horizontally arranged and rotatably arranged in the driving groove, the two ends of the rotating shaft in the driving groove are symmetrically provided with the conical gear one which is coaxially connected with the rotating shaft, one end of the rotating shaft penetrates through the side wall of the driving groove and is fixedly connected with the rotating handle outside the side wall; each movable groove is provided with a moving adjusting component, the two conical gears one are connected with the moving adjusting components in the two movable grooves, and the two moving adjusting components are connected with the two ends of the two limiting plates.

[0012] Each moving adjusting component comprises a sliding rod, a bidirectional screw rod, a conical gear two and a sliding module; the horizontal sliding rod is arranged on the inner side edge of the movable groove, the two ends of the sliding rod are fixed between the two groove walls of the first groove, and the sliding rod is arranged perpendicularly to the rotating shaft; the bidirectional screw rod is rotatably arranged in the movable groove and is arranged horizontally and parallel to the sliding rod, one end of the bidirectional screw rod extends into the driving groove and is coaxially fixedly sleeved with the conical gear two, the conical gear two and the conical gear one are connected in meshing connection through a bevel gear transmission pair; one sliding module is sleeved on each threaded section of the bidirectional screw rod, the sliding module comprises a movable block, a connecting spring and a sliding block, one end of the movable block is sleeved on the bidirectional screw rod through threads, the other end is connected with the sliding block through the connecting spring, and the sliding block is fixedly connected with the end of the limiting plate.

[0013] The two limiting plates are arranged across the sliding rods in the two moving adjusting components, the length direction of each limiting plate is parallel to the rotating shaft of the clamping adjusting mechanism, and the sliding blocks of the sliding modules at the same end of the bidirectional screw rods in the two moving adjusting components are respectively connected to the two ends of the same limiting plate.

[0014] Before the centrifugal pump is disassembled, the two limiting plates are located on the two sides above the mounting plate; when the centrifugal pump is disassembled, the two limiting plates are located directly above the mounting plate.

[0015] Further comprising a positioning fine adjustment component, the positioning fine adjustment component comprises a connecting block and a limiting guide, the connecting block is fixedly installed on the upper surface of the mounting plate, and the connecting block is used for being embedded into the hole groove at the bottom of the centrifugal pump body; the side surface and the bottom of the limiting plate are provided with the limiting guide.

[0016] The side surface of the limiting plate is provided with the horizontally arranged limiting guide, and the horizontally arranged limiting guide is connected to the side surface of the centrifugal pump body after horizontally passing through the limiting plate from the outside to the center.

[0017] The bottom of the limiting plate is provided with a vertical limiting guide, which is vertically installed on the limiting plate and has a bottom surface for contact connection with the upper surface of the mounting plate.

[0018] The limiting guide comprises a vertical stud, a threaded groove, a ball, a rotating column and a rectangular plate. The rotating column is fixedly installed on the upper and lower sides of the limiting plate through the limiting plate aperture by a locking nut. The rotating column is provided with a spherical groove at the inner end face close to the limiting plate through the upper and lower portions of the limiting plate aperture. The ball is embedded in the spherical groove to enable the rotating column and the limiting plate to be connected through the ball rolling. The lower end of the rotating column is provided with a vertical threaded groove, and the vertical stud is installed in the threaded groove through threads. The vertical stud comprises a screw rod and a rectangular plate fixedly arranged at the lower end of the screw rod. The upper end of the screw rod is connected to the threaded groove through threads, and the bottom surface of the rectangular plate is provided with a gasket in direct contact with the top end of the mounting plate.

[0019] The present application has the following beneficial effects:

[0020] When the centrifugal pump auxiliary dismounting tool of the embodiment is used, the mounting plate can be fixed conveniently by setting the bidirectional screw rod and the limiting plate, and the dismounting time is reduced.

[0021] By setting the sliding block and the connecting spring, the damage of the movable block and the bidirectional screw rod caused by the pump shaft vibration can be effectively reduced, and the screw rod slipping of the bidirectional screw rod can be avoided.

[0022] By setting the buffer plate and the buffer spring, the vibration caused by the dismounting of the centrifugal pump impeller can be effectively reduced. In the process of dismounting the multi-stage centrifugal pump, the concentricity is ensured, the limiting plate can be in accurate contact with the middle section of the pump, the dismounting difficulty is reduced, the dismounting efficiency is improved, the quick, accurate and safe dismounting is facilitated, and the maintenance time is shortened. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0024] Figure 1 It is a schematic diagram of the multi-stage centrifugal pump used in the embodiment of the present application.

[0025] Figure 2 It is a side view sectional structure diagram of the centrifugal pump dismounting tool in the embodiment of the present application.

[0026] Figure 3 It is a top view sectional structure diagram of the centrifugal pump dismounting tool in the embodiment of the present application.

[0027] Figure 4 The structure sectional view of the limiting guide piece at the bottom of the limiting plate in the embodiment of the present application.

[0028] Wherein, 1, bearing base, 2, clamping adjusting mechanism, 3, buffer support mechanism, 4, buffer groove, 5, drive groove, 6, movable groove, 7, limiting plate, 8, rotating shaft, 9, rotating handle, 10, bevel gear one, 11, sliding rod, 12, bidirectional screw rod, 13, bevel gear two, 14, movable block, 15, connecting spring, 16, sliding block, 17, limiting column, 18, buffer plate, 19, mounting plate, 20, buffer spring, 21, connecting block, 22, centrifugal pump body, 23, vertical stud, 24, threaded groove, 25, ball, 26, rotating column, 27, rectangular plate, 28, limiting guide piece. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. The present application will be further described in detail below in conjunction with the drawings.

[0031] As shown in Figure 1 , the device comprises a bearing base 1, a clamping adjusting mechanism 2, a buffer support mechanism 3, a limiting plate 7 and a mounting plate 19, as shown in Figure 2As shown, the clamping adjusting mechanism 2 and the buffer supporting mechanism 3 are both arranged on the bearing base 1, the bearing base 1 is internally provided with a first recess and a second recess, the bottom of the first recess is used as a buffer groove 4 and the buffer supporting mechanism 3 is installed in the buffer groove 4, the buffer supporting mechanism 3 is used for the up-down elastic adjustment and support of the centrifugal pump body 22; the two sides of the top of the first recess are used as movable grooves 6, the second recess is located at the side of the first recess and is used as a driving groove 5, the clamping adjusting mechanism 2 is installed in the movable grooves 6 and the driving groove 5, and the clamping adjusting mechanism 2 is connected with the two limiting plates 7; the clamping adjusting mechanism 2 is used to drive the two limiting plates 7 to move towards or away from each other.

[0032] The mounting plate 19 is installed above the buffer supporting mechanism 3, the centrifugal pump body 22 is placed on the mounting plate 19 and located between the two limiting plates 7, and the centrifugal pump body 22 is clamped by the limiting plates 7.

[0033] As shown, Figure 2 the buffer supporting mechanism 3 comprises a buffer plate 18 and a buffer limiting assembly, the bottom of the buffer groove 4 is provided with a plurality of buffer limiting assemblies, the buffer plate 18 is horizontally placed on the plurality of buffer limiting assemblies, and the middle of the upper surface of the buffer plate 18 is fixedly connected with the mounting plate 19; the buffer plate 18 is also arranged in the buffer groove 4 and can slide up and down. Each buffer limiting assembly comprises a limiting column 17 and a buffer spring 20, the buffer spring 20 is sleeved on the limiting column 17, the lower end of the buffer spring 20 is connected with the bottom surface of the buffer groove 4, and the upper end of the buffer spring 20 is connected with the bottom surface of the buffer plate 18.

[0034] As shown, Figure 3 the clamping adjusting mechanism 2 comprises a rotating shaft 8, a rotating handle 9, a conical gear one 10 and a moving adjusting assembly; the rotating shaft 8 is rotatably installed in the driving groove 5, the two ends of the rotating shaft 8 in the driving groove 5 are symmetrically provided with the conical gear one 10 which is fixedly and coaxially connected with the rotating shaft 8, one end of the rotating shaft 8 penetrates through the side wall of the driving groove 5 and is fixedly connected with the rotating handle 9 outside the side wall; each movable groove 6 is provided with a moving adjusting assembly, the two conical gears one 10 are respectively connected with the moving adjusting assemblies in the two movable grooves 6, and the two moving adjusting assemblies are connected with the two ends of the two limiting plates 7.

[0035] Each moving adjusting assembly comprises a sliding rod 11, a bidirectional screw rod 12, a conical gear two 13 and a sliding module; the horizontal sliding rod 11 is arranged on the inner side edge of the movable groove 6, the two ends of the sliding rod 11 are fixed between the two side groove walls of the first recess, and the sliding rod 11 is arranged perpendicularly to the rotating shaft 8; the bidirectional screw rod 12 which is horizontally arranged parallel to the sliding rod 11 is rotatably installed in the movable groove 6, one end of the bidirectional screw rod 12 extends into the driving groove 5 and is coaxially fixedly sleeved with the conical gear two 13, and the conical gear two 13 is connected with the conical gear one 10 in a bevel gear transmission pair.

[0036] The bidirectional screw rod 12 is provided with two thread sections with opposite thread directions. A sliding module for connecting with the end of the limiting plate 7 is sleeved on each of the two thread sections of the bidirectional screw rod 12. The sliding module comprises a movable block 14, a connecting spring 15 and a sliding block 16. One end of the movable block 14 is sleeved on the bidirectional screw rod 12 through a thread, and the other end is connected through the connecting spring 15 and the sliding block 16. The side surface of the other end of the movable block 14 is in contact with the side surface of the sliding rod 11, so that the movable block 14 is limited by the sliding rod 11 and can only move along the sliding rod 11. The sliding block 16 is fixedly connected to the two ends of the same limiting plate 7.

[0037] The two limiting plates 7 are arranged across the sliding rods 11 in the two moving adjusting assemblies. The length direction of each limiting plate 7 is parallel to the rotating shaft 8 of the clamping adjusting mechanism 2. The sliding blocks 16 of the sliding modules at the same end of the bidirectional screw rod 12 in the two moving adjusting assemblies are fixedly connected to the two ends of the same limiting plate 7.

[0038] The mounting plate 19 is located below the limiting plate 7. Before the centrifugal pump is disassembled, the two limiting plates 7 are located on the two sides above the mounting plate 19. When the centrifugal pump is disassembled, the two limiting plates 7 are located directly above the mounting plate 19.

[0039] The specific implementation further comprises a positioning fine adjustment assembly. The positioning fine adjustment assembly comprises a connecting block 21 and a limiting guide 28. The connecting block 21 is fixedly installed on the upper surface of the mounting plate 19 and is used for being embedded into the hole and groove at the bottom of the centrifugal pump body 22. The side surface and the bottom of the limiting plate 7 are each provided with the limiting guide 28.

[0040] In the specific implementation, a plurality of connecting blocks 21 are provided. The plurality of connecting blocks 21 are collectively provided with the centrifugal pump body 22.

[0041] As shown in Figure 3 , the side surface of the limiting plate 7 is provided with a horizontally arranged limiting guide 28 as a horizontal stud. The horizontally arranged limiting guide 28 is connected to the side surface of the centrifugal pump body 22 from the limiting plate 7. Specifically, the horizontally arranged limiting guide 28 can be horizontally penetrated through the limiting plate 7 from the outside to the center and then connected to the side surface of the centrifugal pump body 22. Alternatively, the horizontally arranged limiting guide 28 can be connected to the side surface of the centrifugal pump body 22 in other forms.

[0042] As shown in Figure 4 , the bottom of the limiting plate 7 is provided with a vertically arranged limiting guide 28 as a vertical stud. The vertically arranged limiting guide 28 is vertically installed on the limiting plate 7. The bottom surface of the vertically arranged limiting guide 28 is used for being in contact with the upper surface of the mounting plate 19.

[0043] The limiting guide 28 is described in detail in Figure 4, including stud 23, threaded groove 24, ball 25, rotating column 26 and rectangular plate 27; the upper and lower parts of the rotating column 26 of the whole limiting guide 28 are fixedly installed on the upper and lower sides of the limiting plate 7 through the openings of the limiting plate 7 by locking nuts, the upper and lower parts of the rotating column 26 passing through the openings of the limiting plate 7 are provided with spherical grooves near the inner end faces of the limiting plate 7, the ball 25 is inlaid in the spherical grooves to make the rotating column 26 and the limiting plate 7 connected through the rolling of the ball 25, the ball 25 is designed to play a lubricating role, making the rotating column 26 more smoothly screwed; the lower end of the rotating column 26 is provided with a vertical threaded groove 24, the threaded groove 24 is provided with a stud 23 through threaded installation, the stud 23 includes a screw rod and a rectangular plate 27 fixedly arranged at the lower end of the screw rod, the upper end of the screw rod is connected in the threaded groove 24 through threads, and the bottom surface of the rectangular plate 27 is provided with a gasket directly contacting the top end of the mounting plate 19.

[0044] When fine adjustment of the vertical height position of the centrifugal pump is needed, only the threaded screwing of the rotating column 26, the threaded groove 24 at the bottom of the rotating column 26 and the stud 23 is needed to drive the rectangular plate 27 at the bottom of the stud 23 to move downward so that the bottom thereof is in contact with and pressed against the top of the mounting plate 19. In this way, the four limiting guides are fine-adjusted to different degrees, thereby ensuring that the heights of the centrifugal pump bodies are on the same horizontal line and guaranteeing the concentricity of the installation.

[0045] In the specific implementation, the limiting guide in the vertical direction is arranged horizontally on the inner side of the limiting plate 7 close to the centrifugal pump body 22 to form the horizontally arranged limiting guide 28, thereby fine-adjusting the limiting plate in the horizontal direction and achieving the effect of more tightly fixing the centrifugal pump body and ensuring that the disassembly position of the centrifugal pump body is reasonable and reliable.

[0046] The horizontal stud is used for adjusting the vertical height of the limiting plate 7, the vertical stud is used for adjusting the horizontal height of the limiting plate 7, and the limiting guide 28 can increase the flexibility and accuracy of the horizontally arranged limiting guide 28.

[0047] When the centrifugal pump disassembly and assembly auxiliary device is used, the centrifugal pump body 22 is first connected with the mounting plate 19, so that the carrier base 1 and the pump body are fixed through the connecting block 21 of the positioning fine adjustment assembly, in addition, the clamping and adjusting mechanism 2 can also limit and guide the movement of the pump body during disassembly to avoid swinging, and the buffer supporting mechanism 3 is used to guarantee the concentricity with the pump assembly, after the pump body is fixed by the clamping and adjusting mechanism 2, the pump can be disassembled and assembled through the buffer supporting mechanism 3, and the operation is simple.

[0048] After the centrifugal pump body is placed on the mounting plate 19, the rotating handle is rotated to drive the bevel gears to rotate and drive the bidirectional screw rod 12 to rotate, one end of the bidirectional screw rod 12 is fixedly connected with one end of the movable block 14, thereby driving the movable block to move, one end of the movable block 14 is fixedly connected with one end of the connecting spring 15, when the movable block 14 moves to the middle position of the bearing base 1 and extrudes the connecting spring 15, the connecting spring 15 is elastically deformed to move horizontally, one end of the connecting spring 15 is fixedly connected with one end of the sliding block 16, the connecting spring 15 moves horizontally to drive the sliding block 16 to move horizontally, one end of the sliding block 16 is fixedly connected with one end of the limiting plate 7, the sliding block 16 moves horizontally to drive the limiting plate 7 to move horizontally, and finally the centrifugal pump body is clamped, thereby playing a role of fixing and limiting.

[0049] The specific implementation working process of the present application is as follows:

[0050] In specific use, the mounting plate 19 is fixedly placed on the buffer plate 18, the buffer plate 18 is in close contact with the inner wall of the first groove of the bearing base 1 at both ends, and the buffer plate 18 elastically slides up and down with the buffer support mechanism 3, when the centrifugal pump body 22 is installed, the gravity makes the centrifugal pump body 22 move downward and apply downward pressure to the centrifugal pump body 22, at this time, the centrifugal pump body 22 drives the connecting block 21 and the mounting plate 19 to move downward, and the mounting plate 19 drives the buffer plate 18 to move downward and compresses the buffer spring 20.

[0051] At this time, the rotating handle 9 is operated to rotate, thereby driving the rotating shaft 8 to rotate, the rotating shaft 8 is coaxially installed with the bevel gear one 10, the rotating shaft 8 rotates to drive the bevel gear one 10 to rotate, the bevel gear one 10 is in engagement with one end of the bevel gear two 13 of the moving adjusting assembly, the bevel gear one 10 rotates to drive the two bevel gears two 13 of the moving adjusting assembly to rotate, one end of the bevel gear two 13 is fixedly connected with one end of the bidirectional screw rod 12, when the bevel gear two 13 rotates, the bidirectional screw rod 12 also rotates, one end of the bidirectional screw rod 12 is fixedly connected with one end of the movable block 14, the movable block 14 is limited by the sliding rod 11, and the bidirectional screw rod 12 drives the two movable blocks 14 of the moving adjusting assembly to move to the middle position of the bearing base 1.

[0052] One end of the movable block 14 is fixedly connected with one end of the connecting spring 15, when the movable block 14 moves to the middle position of the bearing base 1 and extrudes the connecting spring 15, the connecting spring 15 is elastically deformed to move horizontally, one end of the connecting spring 15 is fixedly connected with one end of the sliding block 16, the connecting spring 15 moves horizontally to drive the sliding block 16 to move horizontally, one end of the sliding block 16 is fixedly connected with one end of the limiting plate 7, the sliding block 16 moves horizontally to drive the limiting plate 7 to move horizontally, thereby driving the two limiting plates 7 to move to the middle position of the bearing base 1, and the centrifugal pump body 22 is clamped between the two limiting plates 7.

[0053] When the two limiting plates 7 reach above the mounting plate 19, the pressing on the centrifugal pump body 22 is released, the upper end of the buffer spring 20 is fixedly connected with the lower end of the buffer plate 18, the buffer spring 20 pushes the buffer plate 18 to move vertically upward, and then drives the mounting plate 19 to move vertically upward until the mounting plate 19 stops moving after contacting the limiting plate 7, and the mounting plate 19 is clamped in the middle of the buffer plate 18 and the limiting plate 7 and is fixed. In this way, the axial position stability support of the disassembly and assembly auxiliary equipment during operation is ensured, and the concentricity of the radial position installation is ensured.

[0054] The above-mentioned rough position adjustment and clamping of the limiting plate 7 are carried out.

[0055] In specific implementation, the height and horizontal position of the limiting plate 7, the limiting guide, are further adjusted more finely through the horizontal stud and the vertical stud, so as to better assist the disassembly and assembly of the centrifugal pump.

[0056] The horizontal stud is driven to rotate, the length of the horizontal stud penetrating out of the limiting plate 7 is adjusted and contacts the side surface of the centrifugal pump body 22, since the position of the movable block 14 is unchanged at this time, and the sliding block 16 and the limiting plate 7 are elastically connected together through the connecting spring 15 and the movable block 14, and then the limiting plate 7 is driven to move horizontally away from or close to the centrifugal pump body 22, and then the horizontal distance of the limiting plate 7 relative to the centrifugal pump body 22 is adjusted.

[0057] In addition, the vertical stud is driven to rotate, the distance between the lower end of the vertical stud and the bottom surface of the limiting plate 7 is adjusted, and then when the centrifugal pump body 22 is lighter, the buffer plate 18 and the mounting plate 19 are driven by the buffer support mechanism 3 to move upward until the mounting plate 19 approaches the limiting plate 7, and the mounting plate 19 can only first contact the vertical stud, and then the distance of the limiting plate 7 relative to the mounting plate 19 is controlled, and the height of the limiting plate 7 away from the centrifugal pump body 22 is adjusted.

[0058] In this way, it is suitable for operation in a relatively small space, can quickly adjust the limiting guide to a specified height, and also enables the limiting plate 7 to reciprocate along the horizontal adjustment end, so as to adjust the horizontal position of the limiting plate 7.

[0059] From the above description and practice, the centrifugal pump disassembly and assembly auxiliary equipment provided by the present application has the following advantages compared with the prior art: the limiting plate is adjusted in horizontal and vertical positions by the adjusting assembly and the buffer support mechanism, which provides support, limiting and guiding functions for the disassembly and assembly of the centrifugal pump, ensures the concentricity during the disassembly and assembly of the multi-stage centrifugal pump, and enables accurate butt joint between the body and the equipment, reduces the disassembly and assembly difficulty, improves the disassembly and assembly efficiency, and is helpful to realize fast, accurate and safe disassembly and assembly, thereby greatly shortening the maintenance time.

[0060] The above describes the present application and its embodiments, which are not limited, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired thereby, without departing from the purpose of the present application, without creative design, similar structure and embodiments of the technical solution are not creative, and should belong to the protection scope of the present application.

Claims

1. A dismounting auxiliary device of centrifugal pump, characterized by comprising a bearing base (1), a clamping adjusting mechanism (2), a buffer supporting mechanism (3), a limiting plate (7) and a mounting plate (19), the bearing base (1) is provided with a first recess and a second recess, the bottom of the first recess is used as a buffer groove (4), the buffer supporting mechanism (3) is installed in the buffer groove (4), the two sides of the top of the first recess are used as movable grooves (6), the second recess is located at the side of the first recess and is used as a driving groove (5), the clamping adjusting mechanism (2) is installed in the movable grooves (6) and the driving groove (5), the clamping adjusting mechanism (2) is connected with the two limiting plates (7), the mounting plate (19) is installed above the buffer supporting mechanism (3), the centrifugal pump body (22) is placed on the mounting plate (19) and located between the two limiting plates (7), the centrifugal pump body (22) is clamped by the limiting plates (7). The clamping adjusting mechanism (2) comprises a rotating shaft (8), a rotating handle (9), a bevel gear one (10) and a moving adjusting assembly, the rotating shaft (8) is horizontally installed in the driving groove (5), the two ends of the rotating shaft (8) in the driving groove (5) are symmetrically provided with the bevel gear one (10) which is fixedly connected with the rotating shaft (8) coaxially, one end of the rotating shaft (8) penetrates through the side wall of the driving groove (5) and is fixedly connected with the rotating handle (9) outside the side wall, each movable groove (6) is provided with a moving adjusting assembly, the two bevel gears one (10) are connected with the moving adjusting assemblies in the two movable grooves (6) respectively, and the two moving adjusting assemblies are connected with the two ends of the two limiting plates (7). Each moving adjusting assembly comprises a sliding rod (11), a bidirectional screw rod (12), a bevel gear two (13) and a sliding module, the horizontal sliding rod (11) is arranged on the inner side edge of the movable groove (6), the two ends of the sliding rod (11) are fixed between the two groove walls of the first recess, and the sliding rod (11) is arranged perpendicularly to the rotating shaft (8), the horizontal bidirectional screw rod (12) which is arranged parallel to the sliding rod (11) is rotatably installed in the movable groove (6), one end of the bidirectional screw rod (12) extends into the driving groove (5) and is coaxially fixedly sleeved with the bevel gear two (13), the bevel gear two (13) and the bevel gear one (10) are connected in meshing connection through a bevel gear transmission pair, and each sliding module is sleeved on the two threaded segments of the bidirectional screw rod (12), the sliding module comprises a movable block (14), a connecting spring (15) and a sliding block (16), one end of the movable block (14) is sleeved on the bidirectional screw rod (12) through screw threads, the other end is connected with the sliding block (16) through the connecting spring (15), and the sliding block (16) is fixedly connected with the end of the limiting plate (7). The bottom of the limiting plate (7) is provided with a vertically arranged limiting guide (28), the vertically arranged limiting guide (28) is vertically installed on the limiting plate (7), and the bottom surface of the vertically arranged limiting guide (28) is used for contact connection with the upper surface of the mounting plate (19). ​ The limiting guide (28) comprises a stud (23), a threaded groove (24), a ball (25), a rotating column (26) and a rectangular plate (27); the rotating column (26) is fixedly installed on the upper and lower sides of the limiting plate (7) through the opening of the limiting plate (7) by a locking nut, the upper and lower parts of the rotating column (26) passing through the opening of the limiting plate (7) are provided with spherical grooves near the inner end face of the limiting plate (7), and the ball (25) is embedded in the spherical grooves to enable the rotating column (26) and the limiting plate (7) to be connected through the rolling of the ball (25); the lower bottom end of the rotating column (26) is provided with a vertical threaded groove (24), and the threaded groove (24) is provided with the stud (23) through threaded installation, the stud (23) comprises a screw rod and a rectangular plate (27) fixedly arranged at the lower end of the screw rod, the upper end of the screw rod is connected in the threaded groove (24) through a threaded connection, and the bottom surface of the rectangular plate (27) is provided with a gasket in direct contact with the top end of the mounting plate (19).

2. The dismounting auxiliary device for a centrifugal pump according to claim 1, characterized in that: The buffer support mechanism (3) comprises a buffer plate (18) and a buffer limiting component, a plurality of buffer limiting components are arranged on the bottom of the buffer groove (4), the buffer plate (18) is horizontally arranged on the plurality of buffer limiting components, and the middle of the upper surface of the buffer plate (18) is fixedly connected with the mounting plate (19); each buffer limiting component comprises a limiting column (17) and a buffer spring (20), the buffer spring (20) is sleeved outside the limiting column (17), the lower end of the buffer spring (20) is connected with the bottom of the buffer groove (4), and the upper end of the buffer spring (20) is connected with the bottom surface of the buffer plate (18).

3. The dismounting auxiliary device for a centrifugal pump according to claim 1, characterized in that: Two limiting plates (7) are arranged across the sliding rods (11) of the two mobile adjusting components, the length direction of each limiting plate (7) is parallel to the rotating shaft (8) of the clamping adjusting mechanism (2), and the sliders (16) of the sliding modules at the same end of the bidirectional screw rods (12) of the two mobile adjusting components are respectively connected to the two ends of the same limiting plate (7).

4. The dismounting auxiliary device for a centrifugal pump according to claim 1, characterized in that: Before the centrifugal pump is dismounted, the two limiting plates (7) are located on the two sides above the mounting plate (19); when the centrifugal pump is dismounted, the two limiting plates (7) are located directly above the mounting plate (19).

5. The dismounting auxiliary device for a centrifugal pump according to claim 1, characterized in that: Further comprising a positioning fine adjustment component, the positioning fine adjustment component comprises a connecting block (21) and a limiting guide (28), the connecting block (21) is fixedly installed on the upper surface of the mounting plate (19), and the connecting block (21) is used for being embedded into the hole groove at the bottom of the centrifugal pump body (22); the side surface and the bottom of the limiting plate (7) are provided with the limiting guide (28).

6. The dismounting auxiliary device for a centrifugal pump according to claim 1, characterized in that: The side of the limiting plate (7) is provided with a horizontally arranged limiting guide (28), which is connected to the side of the centrifugal pump body (22) after passing through the limiting plate (7).

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