Replaceable multi-stage axial flow pump supporting structure

Abstract

The utility model discloses a replaceable multistage axial flow pump supporting structure, which relates to the technical field of multistage axial flow pumps and comprises two connecting ends, a plurality of shaft sleeves arranged between the two connecting ends, connecting ends arranged on the upper surfaces of the connecting ends and driving ends arranged on the outer sides of the connecting ends. The replaceable multistage axial flow pump supporting structure comprises a connecting end, supporting legs are symmetrically and fixedly arranged on the lower surface of the connecting end, sleeve blocks are symmetrically and fixedly arranged on the outer surface of the connecting end, a connecting column is movably arranged between the two horizontally-corresponding sleeve blocks and the two supporting legs in a penetrating mode, and double-screw bolts are symmetrically and fixedly arranged at the two ends of the connecting column. The sleeve blocks, the supporting legs and the connecting columns are matched, the connecting ends are fastened through the studs and the nuts, and the connecting ends are transversely fixed, so that the torsion resistance and bending resistance of the structure are enhanced, the coaxiality is guaranteed, and vibration abrasion is reduced; and through sliding of the bottom plate inserting plate and the bottom frame and positioning of the positioning bolts, flexible adjustment of the distance is achieved, installation of different pump bodies is adapted, and the installation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of multi-stage axial flow pump technology, specifically a replaceable multi-stage axial flow pump support structure. Background Technology

[0002] A multistage axial flow pump is a type of fluid machinery that uses multiple impellers (usually 2 to 4) connected coaxially to progressively pressurize the liquid, thereby achieving high head and large flow rate liquid transportation. It combines the high flow rate characteristics of axial flow pumps with the pressurization advantages of multistage impellers and is widely used in scenarios that require overcoming high water level differences or long-distance liquid transportation.

[0003] However, existing technologies still have the following problems:

[0004] Existing multi-stage axial flow pump support structures mostly adopt integrated or simple bolt connections, lacking lateral restraint mechanisms. During operation, vibration can easily cause the connection ends to shift, making it difficult to ensure the coaxiality of the shaft system. Long-term use can easily cause pump body wear and efficiency reduction, and maintenance requires complete disassembly, which is time-consuming and labor-intensive.

[0005] Furthermore, traditional support structures typically have poor installation adaptability. The fixed spacing between the base plates of conventional support structures cannot accommodate the installation requirements of pumps of different specifications. If adjustments are needed, the base must be redesigned or multiple measurements and positionings must be performed. This not only results in low installation efficiency but also makes it easy for errors to cause unstable pump operation, making it difficult to meet diverse working conditions.

[0006] To address the aforementioned problems, the inventors proposed a replaceable multi-stage axial flow pump support structure. Utility Model Content

[0007] To address the issues of insufficient stability and durability, as well as poor installation adaptability, of traditional support structures, the purpose of this invention is to provide a replaceable multi-stage axial flow pump support structure.

[0008] To solve the above technical problems, the present invention adopts the following technical solution: a replaceable multi-stage axial flow pump support structure, including two connecting ends, a plurality of bushings between the two connecting ends, an access end on the upper surface of the connecting end, a driving end on the outer side of the connecting end, legs symmetrically fixed on the lower surface of the connecting end, sleeve blocks symmetrically fixed on the outer surface of the connecting end, and a connecting post movably passing through two horizontally corresponding sleeve blocks and two supporting legs, studs symmetrically fixed at both ends of the connecting post, and a fixing nut threaded on the outer surface of the stud.

[0009] Preferably, the lower surfaces of the two corresponding legs are connected to a base plate by bolts. Mounting plates are symmetrically fixed on the outer side of the base plates. A base frame is fixed on the inner side of one base plate, and an insert plate is fixed on the inner side of the other base plate. The insert plate is snapped onto the base frame, and the base frame and the insert plate are connected by bolts. A sliding groove is formed on the upper surface of the base frame, and the insert plate is slidably disposed in the sliding groove. A number of positioning bolts are bolted together between the insert plate and the base frame. A number of positioning grooves for use with the positioning bolts are formed on the upper surfaces of both the insert plate and the sliding groove.

[0010] Preferably, the inner side of the drive end is provided with a mounting block, and the mounting block is connected to the corresponding connecting end by bolts. The inner side of the fixing nut is provided with a washer, and the washer is in movable contact with the corresponding sleeve block and support leg.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model utilizes a combination structure of sleeve blocks, support legs, and connecting columns to horizontally fix the connecting end under the tightening action of studs and fixing nuts, forming a stable support system. This design enhances the overall structure's resistance to torsion and bending, ensures the coaxiality of the multi-stage axial flow pump during operation, and effectively reduces vibration and wear.

[0013] 2. This utility model achieves flexible adjustment of the lateral spacing of the base plate by sliding the insert plate of the base plate with the base frame and under the constraint of the positioning bolts and positioning grooves. This design can adapt to the installation requirements of pump bodies of different specifications and does not require repositioning and measurement, which greatly improves the installation efficiency and convenience. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is an exploded view of the connecting end portion of this utility model.

[0017] Figure 3 This is an exploded view of the relevant structure of the base plate of this utility model.

[0018] In the diagram: 1. Connecting end; 11. Access end; 12. Sleeve block; 13. Connecting post; 14. Stud; 15. Fixing nut; 16. Washer; 2. Drive end; 21. Mounting block; 3. Bushing; 4. Base plate; 41. Support leg; 42. Mounting plate; 43. Base frame; 44. Insert plate; 45. Slide groove; 46. Positioning bolt; 47. Positioning groove; 48. Sleeve; 49. Insert post. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example: Figure 1-3 As shown, this utility model provides a replaceable multi-stage axial flow pump support structure, including two connecting ends 1, with a plurality of bushings 3 between the two connecting ends 1. The upper surface of the connecting end 1 is provided with an access end 11, and the upper surface of the access end 11 is provided with a plurality of bolt grooves. The outer side of the connecting end 1 is provided with a drive end 2, and the inner side of the drive end 2 is provided with a mounting block 21. The mounting block 21 is connected to the corresponding connecting end 1 by bolts. The lower surface of the connecting end 1 is symmetrically fixed with support legs 41. The two connecting ends 1 are axially fixed by the plurality of bushings 3 in the middle, forming a support frame for the multi-stage axial flow pump. The drive end 2 is connected to the connecting end 1 by bolts through the inner mounting block 21, transmitting the driving force to the shaft system and driving the impeller to rotate.

[0021] A sleeve block 12 is symmetrically fixed on the outer surface of the connecting end 1, and a connecting post 13 is movably connected between two horizontally corresponding sleeve blocks 12 and two support legs 41. A stud 14 is symmetrically fixed at both ends of the connecting post 13. A fixing nut 15 is threaded on the outer surface of the stud 14. A washer 16 is provided on the inner side of the fixing nut 15, and the washer 16 is movably fitted with the corresponding sleeve block 12 and support leg 41. The sleeve block 12 and support leg 41 on the outer surface of the connecting end 1 are connected through the connecting post 13. The stud 14 and fixing nut 15 clamp and fix the sleeve block 12 and support leg 41 to form a transverse support structure, ensuring the coaxiality and stability of the connecting end 1 and the driving end 2.

[0022] The lower surfaces of two corresponding support legs 41 are connected to a base plate 4 by bolts. Mounting plates 42 are symmetrically fixed on the outer side of the base plate 4. A base frame 43 is fixed on the inner side of one base plate 4, and an insert plate 44 is fixed on the inner side of the other base plate 4. The insert plate 44 is snapped onto the base frame 43, and the base frame 43 and the insert plate 44 are connected by bolts. A sliding groove 45 is opened on the upper surface of the base frame 43, and the insert plate 44 is slidably disposed in the sliding groove 45. Several positioning bolts 46 are bolted together between the insert plate 44 and the base frame 43. Several positioning grooves 47 are opened on the upper surfaces of the insert plate 44 and the sliding groove 45 to cooperate with the positioning bolts 46. The two base plates 4 are slidably engaged by the base frame 43 on one side and the insert plate 44 on the other side (the insert plate 44 is embedded in the sliding groove 45 of the base frame 43) to achieve fine adjustment of the lateral position. The positioning bolts 46 pass through the positioning grooves 47 of the insert plate 44 and the base frame 43 to fix the relative position of the two and adapt to the needs of different installation spacing.

[0023] One of the base plates 4 has a sleeve 48 symmetrically fixed on its inner side, and the other base plate 4 has a post 49 symmetrically fixed on its inner side. The post 49 is inserted into the corresponding sleeve 48. The post 49 of one base plate 4 is inserted into the sleeve 48 of the other base plate 4 to form a longitudinal guide structure, ensuring the verticality and stability of the base plates during splicing and avoiding misalignment.

[0024] Working principle: The two connecting ends 1 are axially fixed through several bushings 3 in the middle, forming a support frame for the multi-stage axial flow pump. The drive end 2 is connected to the connecting end 1 by bolts through the inner mounting block 21, which transmits the driving force to the shaft system and drives the impeller to rotate.

[0025] The sleeve 12 on the outer surface of the connecting end 1 is connected to the support leg 41 through the connecting post 13. The stud 14 and the fixing nut 15 clamp and fix the sleeve 12 and the support leg 41 to form a lateral support structure, ensuring the coaxiality and stability of the connecting end 1 and the driving end 2.

[0026] The two base plates 4 slide with the base frame 43 on one side and the insert plate 44 on the other side (the insert plate 44 is embedded in the groove 45 of the base frame 43) to achieve fine adjustment of the lateral position. The positioning bolt 46 passes through the positioning groove 47 of the insert plate 44 and the base frame 43 to fix the relative position of the two and adapt to the needs of different installation spacing.

[0027] The insert post 49 of one base plate 4 is inserted into the sleeve 48 of another base plate 4 to form a longitudinal guide structure, ensuring the verticality and stability of the base plates during splicing and avoiding misalignment;

[0028] When the support structure of a certain stage of the axial flow pump is damaged, only the bolts of the corresponding connecting end 1 and drive end 2, the fixing nut 15 of the connecting column 13, and the positioning bolt 46 of the base plate 4 need to be removed. The connecting end 1, shaft sleeve 3 or drive end 2 of that stage can be replaced separately without disassembling the entire pump body, which greatly shortens the maintenance time.

[0029] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A replaceable multi-stage axial flow pump support structure, comprising two connecting ends (1), characterized in that: A plurality of bushings (3) are provided between the two connecting ends (1). An access end (11) is provided on the upper surface of the connecting end (1). A driving end (2) is provided on the outer side of the connecting end (1). Support legs (41) are symmetrically fixed on the lower surface of the connecting end (1). Sleeve blocks (12) are symmetrically fixed on the outer surface of the connecting end (1). A connecting post (13) is movably passed between two horizontally corresponding sleeve blocks (12) and two support legs (41). Studs (14) are symmetrically fixed at both ends of the connecting post (13). A fixing nut (15) is threaded on the outer surface of the stud (14).

2. The replaceable multi-stage axial flow pump support structure as described in claim 1, characterized in that: The lower surfaces of the two corresponding legs (41) are connected to a base plate (4) by bolts. The outer side of the base plate (4) is symmetrically fixed with mounting plates (42). The inner side of one of the base plates (4) is fixed with a base frame (43), and the inner side of the other base plate (4) is fixed with a plug plate (44). The plug plate (44) is snapped onto the base frame (43), and the base frame (43) and the plug plate (44) are connected by bolts.

3. The replaceable multi-stage axial flow pump support structure as described in claim 1, characterized in that: The upper surface of the access terminal (11) is provided with several bolt grooves.

4. The replaceable multi-stage axial flow pump support structure as described in claim 1, characterized in that: The inner side of the drive end (2) is provided with a mounting block (21), and the mounting block (21) is connected to the corresponding connection end (1) by bolts.

5. The replaceable multi-stage axial flow pump support structure as described in claim 1, characterized in that: The inner side of the fixing nut (15) is provided with a washer (16), and the washer (16) is in contact with the corresponding sleeve (12) and the support leg (41).

6. The replaceable multi-stage axial flow pump support structure as described in claim 2, characterized in that: The upper surface of the bottom frame (43) is provided with a groove (45), and the insert plate (44) is slidably disposed in the groove (45).

7. The replaceable multi-stage axial flow pump support structure as described in claim 6, characterized in that: The insert plate (44) and the bottom frame (43) are connected by a number of positioning bolts (46), and the upper surfaces of the insert plate (44) and the slide (45) are provided with a number of positioning grooves (47) for use with the positioning bolts (46).

8. The replaceable multi-stage axial flow pump support structure as described in claim 2, characterized in that: One of the base plates (4) is symmetrically fixed with a sleeve (48) on its inner side, and the other base plate (4) is symmetrically fixed with a post (49) on its inner side, the post (49) being inserted into the corresponding sleeve (48).

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