Concentricity correction device for vertical multi-stage centrifugal pump

Abstract

The utility model discloses a vertical multi-stage centrifugal pump concentricity correcting device which comprises two device bodies, a bottom plate is fixedly connected to the bottoms of the device bodies, adjusting assemblies are installed in the device bodies, a connecting plate is fixedly connected to the tops of the device bodies, and a correcting table is connected to the tops of the device bodies through the connecting plate. A motor and a pump body are placed on the top of the correction table, fixing assemblies are installed on the outer side of the motor and the outer side of the pump body, each fixing assembly comprises a foot screw and a fixing plate, and a connecting groove is formed under the foot screw. According to the technical scheme, it is not needed to detach anchor screws originally fixed to the motor and the pump body and add gaskets, the top plate can be directly jacked up through the electric push rod, the top plate ascends from the interior of the connecting groove and jacks up the anchor screws, and therefore the adjusting effect is achieved, the processes of detaching the anchor screws and adding the gaskets are omitted in the whole adjusting process, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump assembly technology, specifically a concentricity correction device for a vertical multistage centrifugal pump. Background Technology

[0002] A multistage centrifugal pump combines two or more centrifugal pumps with the same function. In terms of fluid channel structure, the pressure relief port of the first stage is connected to the inlet of the second stage, and the pressure relief port of the second stage is connected to the inlet of the third stage. This series connection forms a multistage centrifugal pump. Currently, centrifugal pumps are mainly assembled to adjust concentricity. Concentricity, also known as coaxiality, is generally adjusted by experienced engineers. Coaxiality is an important technical indicator for evaluating cylindrical workpieces. Coaxiality error directly affects the assembly and use of the workpiece. However, when the axis of the measured element of the workpiece is particularly short, it is very difficult to evaluate its coaxiality. In this case, concentricity is usually used for evaluation.

[0003] However, existing centrifugal pump concentricity adjustment is generally done manually by experienced engineers, which requires various auxiliary tools such as calculators, recording paper, carbon pens, copper rods and shims, making the adjustment process lengthy and time-consuming, resulting in low work efficiency. Therefore, we propose a vertical multistage centrifugal pump concentricity adjustment device. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a vertical multistage centrifugal pump concentricity correction device, which solves the problem mentioned in the background art that the existing centrifugal pump concentricity adjustment and correction process is too long, wastes a lot of time, and results in low work efficiency.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a vertical multistage centrifugal pump concentricity correction device, comprising two main bodies, a base plate fixedly connected to the bottom of each main body, an adjustment component installed inside each main body, a connecting plate fixedly connected to the top of each main body, and a correction platform connected to the top of each main body via the connecting plate. A motor and a pump body are respectively placed on the top of the correction platform, and fixing components are installed on the outer sides of both the motor and the pump body.

[0008] More preferably, the fixing component includes anchor screws and a fixing plate, the anchor screws are threaded onto the fixing plate, and a connecting groove is provided directly below the anchor screws, and the connecting groove is located on the surface of the device body.

[0009] More preferably, the adjustment assembly includes four symmetrically installed electric push rods and a top plate, with the top of each electric push rod fixedly connected to the top plate, and the top plate located within a connecting groove.

[0010] More preferably, a coupling of the same size is installed on one side of both the motor and the pump body, and a diagonal screw is threaded onto the coupling, with a nut at the end of the diagonal screw.

[0011] In a further preferred embodiment, a aligning plate is also snapped onto the side of the motor and pump body near the coupling, and the side of the aligning plate is provided with a snap-fit ​​groove.

[0012] More preferably, the calibration table is made of stainless steel and the surface of the calibration table is polished smooth.

[0013] (III) Beneficial Effects

[0014] This utility model provides a concentricity correction device for a vertical multistage centrifugal pump, which has the following beneficial effects:

[0015] (1) This vertical multistage centrifugal pump concentricity correction device, through the set adjustment components, connecting grooves and alignment plates, by placing the motor and pump body on the correction table and tightening the foundation bolts, installing the coupling and diagonal bolts, the engineer installs the magnetic gauge holder on the coupling neck on one side of the pump body, and opens the gauge holder switch so that the gauge holder will be attracted and fixed, and then install the dial gauge holder. After the dial gauge and radial gauge are installed and adjusted, the correction can begin. After rotating the coupling to understand the error data, it is not necessary to remove the foundation bolts that were originally fixed to the motor and pump body and add shims. The top plate can be directly lifted by the electric push rod, so that the top plate rises from the connecting groove and lifts the foundation bolts, thereby achieving the adjustment effect. The whole adjustment process reduces the process of removing foundation bolts and adding shims, reduces the time used for disassembly and improves work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the nut of this utility model;

[0018] Figure 3 This is a partial structural diagram of the adjustment component of this utility model;

[0019] Figure 4 This is a partial structural schematic diagram of the electric actuator of this utility model.

[0020] The following are the labels in the diagram: 1. Base plate; 2. Main body of the device; 3. Anchor bolts; 4. Fixing plate; 5. Motor; 6. Alignment plate; 7. Snap-fit ​​groove; 8. Coupling; 9. Diagonal screws; 901. Nut; 10. Alignment platform; 11. Pump body; 12. Connecting plate; 13. Adjustment component; 14. Connecting groove; 15. Electric push rod; 16. Top plate.

[0021] All instruments mentioned in this utility model can be obtained by purchase or private customization. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a vertical multistage centrifugal pump concentricity correction device, comprising two main body 2, a base plate 1 fixedly connected to the bottom of the main body 2, an adjustment component 13 installed inside the main body 2, a connecting plate 12 fixedly connected to the top of the main body 2, and a correction platform 10 connected to the top of the main body 2 through the connecting plate 12. A motor 5 and a pump body 11 are respectively placed on the top of the correction platform 10, and a fixing component is installed on the outside of both the motor 5 and the pump body 11.

[0024] In this specific example, the fixing components include anchor screws 3 and fixing plates 4. Anchor screws 3 are threaded onto fixing plates 4. A connecting groove 14 is provided directly below the anchor screws 3 and is located on the surface of the main body 2 of the device. The connection groove 14 is located directly below the anchor screws 3 so that the top plate 16 can lift it from below the anchor screws 3.

[0025] In this specific example, the adjustment assembly 13 includes four symmetrically installed electric push rods 15 and a top plate 16. The top of the electric push rod 15 is fixedly connected to the top plate 16, and the top plate 16 is located in the connecting groove 14. After rotating the coupling 8 to understand the error data, it is not necessary to remove the original anchor bolts of the motor 5 and the pump body 11 to add shims. The top plate 16 can be directly lifted by the electric push rod 15, so that the top plate 16 rises from the connecting groove 14 and lifts the anchor bolts 3, thereby achieving the adjustment effect.

[0026] In this specific example, the same size coupling 8 is installed on one side of both the motor 5 and the pump body 11. The coupling 8 is threaded with diagonal screws 9, and the tail end of the diagonal screws 9 is provided with nuts 901. After the couplings 8 on the sides of the motor 5 and the pump body 11 are aligned, the diagonal screws 9 and nuts 901 are screwed in to complete the fixation.

[0027] In this specific example, the motor 5 and the pump body 11 are also connected to the coupling 8 by a aligning plate 6. The aligning plate 6 has a snap-fit ​​groove 7 on its side, which helps to correct the coupling.

[0028] In this specific example, the calibration table 10 is made of stainless steel and its surface is polished smooth. The smooth surface of the calibration table 10 results in lower error during calibration.

[0029] Working Principle: After the utility model is installed, first check the installation, fixation, and safety protection. Place the motor 5 and pump body 11 on the calibration platform 10 and tighten the anchor bolts 3. Install the coupling 8 and diagonal screws 9. The engineer installs the magnetic gauge holder on the neck of the coupling 8 on one side of the pump body 11. Turn on the gauge holder switch, and the gauge holder will be attracted and fixed. Then install the dial indicator holder. After the dial indicator and radial gauge are installed and adjusted, calibration can begin. After rotating the coupling 8 to understand the error data, it is not necessary to remove the anchor bolts that originally fixed the motor 5 and pump body 11 and add shims. The top plate 16 can be directly lifted by the electric push rod 15, so that the top plate 16 rises from the connecting groove 14 and lifts the anchor bolts 3, thereby achieving the adjustment effect. The whole adjustment process reduces the process of removing the anchor bolts 3 and adding shims, improving work efficiency. This completes the use of the utility model.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concentricity correction device for a vertical multistage centrifugal pump, comprising two main body devices (2), characterized in that: The bottom of the device body (2) is fixedly connected to a base plate (1), an adjustment component (13) is installed inside the device body (2), a connecting plate (12) is fixedly connected to the top of the device body (2), a calibration platform (10) is connected to the top of the device body (2) through the connecting plate (12), a motor (5) and a pump body (11) are respectively placed on the top of the calibration platform (10), and a fixing component is installed on the outside of the motor (5) and the pump body (11).

2. The concentricity correction device for a vertical multistage centrifugal pump according to claim 1, characterized in that, The fixing component includes anchor bolts (3) and fixing plate (4). The anchor bolts (3) are threaded onto the fixing plate (4). A connecting groove (14) is provided directly below the anchor bolts (3), and the connecting groove (14) is located on the surface of the device body (2).

3. The concentricity correction device for a vertical multistage centrifugal pump according to claim 1, characterized in that, The adjustment assembly (13) includes four symmetrically installed electric push rods (15) and a top plate (16). The top of each electric push rod (15) is fixedly connected to the top plate (16), and the top plate (16) is located in the connecting groove (14).

4. The concentricity correction device for a vertical multistage centrifugal pump according to claim 1, characterized in that, The motor (5) and the pump body (11) are each equipped with a coupling (8) of the same size on one side. The coupling (8) is threaded with a diagonal screw (9), and the tail end of the diagonal screw (9) is provided with a nut (901).

5. The concentricity correction device for a vertical multistage centrifugal pump according to claim 1, characterized in that, The motor (5) and pump body (11) are also fitted with a aligning plate (6) on the side near the coupling (8), and the side of the aligning plate (6) is provided with a snap-fit ​​groove (7).

6. The concentricity correction device for a vertical multistage centrifugal pump according to claim 1, characterized in that, The calibration table (10) is made of stainless steel and the surface of the calibration table (10) is polished smooth.

Images