Auxiliary tool for disassembling and assembling pump core of centrifugal pump

Abstract

The utility model relates to a centrifugal pump core dismounting auxiliary tool which comprises a base frame, a first supporting leg, a second supporting leg and a third supporting leg are sequentially and detachably arranged at the bottom of the base frame in the length direction of the base frame, and the height of the first supporting leg and the height of the second supporting leg are the same and are both larger than the height of the third supporting leg. Two hanging brackets with an adjustable distance are sequentially and detachably arranged at the top of the base frame in the length direction of the base frame, lifting lugs are arranged at the tops of the hanging brackets, and chain hoists are hung on the lifting lugs; the utility model has the advantages of simple structure, low manufacturing cost and reusability, further reduces the maintenance cost, and can be disassembled and assembled only after the chain hoist is bound with the pump core in the use process, thereby simplifying the process, shortening the maintenance time and reducing the labor intensity of workers.

Description

Technical Field

[0001] The utility model relates to the technical field of pump core disassembly and assembly, in particular to a pump core disassembly and assembly auxiliary tooling for a centrifugal pump. Background Art

[0002] Double-shell multistage centrifugal pumps are a common type of equipment in modern factories, refineries and other chemical companies. This type of equipment has a double-layer casing, and its outer pump casing is cylindrical, so it is also called a "barrel bag pump" or "barrel pump". In the outer pump casing of the double-shell multistage centrifugal pump, there is a pump core composed of an inner pump casing and impeller and other parts. During the maintenance of the centrifugal pump, the pump core needs to be disassembled.

[0003] The existing method of disassembling and assembling the pump core is to use a crane to lift the pump core and extract it from or insert it into the outer pump casing. The use cost of the crane is high, which in turn increases the maintenance cost. In addition, during the use of the crane, it is necessary to carry out processes such as crane leg kicking, lifting preparation, disassembly and assembly, crane collection, hard isolation of the lifting area or cordon enclosure, which prolongs the maintenance time and increases the labor intensity of workers. Utility Model Content

[0004] The purpose of the utility model is to design a pump core disassembly and assembly auxiliary tool for a centrifugal pump, so that the problems mentioned in the background technology can be solved.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A pump core disassembly and assembly auxiliary tool for a centrifugal pump comprises a base frame, wherein the bottom of the base frame is sequentially detachably provided with a first supporting foot, a second supporting foot and a third supporting foot along its length direction, the height of the first supporting foot and the height of the second supporting foot are the same and both are greater than the height of the third supporting foot, and the top of the base frame is sequentially detachably provided with two hangers with adjustable distances along its length direction, and a lifting ear is provided on the lifting ear, and a manual hoist is hung on the lifting ear.

[0007] Furthermore, two first supporting legs are provided and are symmetrically arranged, a first connecting block is fixedly connected between the tops of the two first supporting legs, a first groove adapted to the first connecting block is provided at the bottom of the base frame, a first main screw hole is provided on the first connecting block, a first secondary screw hole corresponding to the first main screw hole is provided in the first groove, and the first main screw hole and the first secondary screw hole are connected by a first screw.

[0008] Furthermore, a first reinforcing rib fixedly connected to the first connecting block is provided on the upper portion of the first supporting leg.

[0009] Furthermore, two second supporting feet are provided and are symmetrically arranged, a second connecting block is fixedly connected between the tops of the two second supporting feet, a second groove adapted to the second connecting block is provided at the bottom of the base frame, a second main screw hole is provided on the second connecting block, a second secondary screw hole corresponding to the second main screw hole is provided in the second groove, and the second main screw hole and the second secondary screw hole are connected by a second screw.

[0010] Furthermore, a second reinforcing rib fixedly connected to the second connecting block is provided on the upper portion of the second supporting leg.

[0011] Furthermore, the third supporting legs are provided with two and are symmetrically arranged, a third connecting block is fixedly connected between the tops of the two third supporting legs, a third groove adapted to the third connecting block is provided at the bottom of the base frame, a third main screw hole is provided on the third connecting block, a third secondary screw hole corresponding to the third main screw hole is provided in the third groove, and the third main screw hole and the third secondary screw hole are connected by a third screw.

[0012] Furthermore, the upper portion of the third supporting leg is provided with a third reinforcing rib fixedly connected to the third connecting block.

[0013] Furthermore, the hanger includes two symmetrically arranged support rods, a hanger is fixedly connected between the tops of the two support rods, the lifting ears are fixedly connected to the hanger, a support plate is fixedly connected to the bottom of the support rods, a slide groove is provided at the bottom of the support plate, a slide rod corresponding to the slide groove is provided at the top of the base frame, the slide groove is slidably connected to the slide rod, a fourth main screw hole is provided on the support plate, a plurality of fourth secondary screw holes are provided on the top of the slide rod along its length direction, and the fourth main screw hole and the fourth secondary screw hole are connected by a fourth screw.

[0014] Furthermore, the upper part and the lower part of the support rod are respectively provided with a fourth reinforcing rib and a fifth reinforcing rib fixedly connected to the suspension rod and the support plate.

[0015] Furthermore, the bottom of the first supporting foot and the second supporting foot are both provided with an internal screw hole, the internal thread of the internal screw hole is connected to a screw rod, one end of the screw rod away from the internal screw hole is fixedly connected to a nut, and the side of the nut away from the screw rod is fixedly connected to a foot pad.

[0016] The beneficial effects of the utility model are:

[0017] The first supporting foot and the second supporting foot are in contact with the ground, and the third supporting foot of the base frame is in contact with the base of the centrifugal pump, so as to support the base frame. Two hangers are supported on the base frame, and the pump core is lifted and drawn out of or inserted into the outer pump casing by a manual hoist hung on the hanger. The structure is simple, the manufacturing cost is low, and the pump core can be reused, thereby reducing the maintenance cost.

[0018] During the use of the utility model, the manual hoist can be disassembled and assembled only after it is bound to the pump core, which simplifies the process, shortens the maintenance time, and reduces the labor intensity of workers;

[0019] The detachable structure of the first supporting leg, the second supporting leg, the third supporting leg and the hanger can be convenient for transportation and storage, and the distance between the two hangers can be adjusted according to the actual needs of the site, thereby increasing practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a schematic diagram of the exploded structure of the first supporting leg, the second supporting leg and the third supporting leg in the utility model;

[0023] Figure 3 It is a schematic diagram of the explosion structure of the hanger in the utility model.

[0024] The names of the components marked in the figure are as follows:

[0025] 1. Base frame; 2. First supporting foot; 3. Second supporting foot; 4. Third supporting foot; 5. Lifting ear; 6. First connecting block; 7. First groove; 8. First screw; 9. First reinforcing rib; 10. Second connecting block; 11. Second groove; 12. Second screw; 13. Second reinforcing rib; 14. Third connecting block; 15. Third groove; 16. Third screw; 17. Third reinforcing rib; 18. Support rod; 19. Suspension rod; 20. Support plate; 21. Slide groove; 22. Slide rod; 23. Fourth screw; 24. Fourth reinforcing rib; 25. Fifth reinforcing rib; 26. Inner screw hole; 27. Screw; 28. Nut; 29. ​​Foot pad. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0027] like Figure 1-3 As shown, a centrifugal pump core disassembly and assembly auxiliary tooling includes a base frame 1, and the bottom of the base frame 1 is provided with a first supporting foot 2, a second supporting foot 3 and a third supporting foot 4 in sequence along its length direction. The height of the first supporting foot 2 and the height of the second supporting foot 3 are the same and both are greater than the height of the third supporting foot 4. The base frame 1 is supported by the first supporting foot 2 and the second supporting foot 3 being in contact with the ground, and the third supporting foot 4 being in contact with the base of the centrifugal pump;

[0028] The first supporting legs 2 are provided with two and are symmetrically arranged, a first connecting block 6 is fixedly connected between the tops of the two first supporting legs 2, a first groove 7 adapted to the first connecting block 6 is provided at the bottom of the base frame 1, a first main screw hole is provided on the first connecting block 6, a first secondary screw hole corresponding to the first main screw hole is provided in the first groove 7, the first main screw hole and the first secondary screw hole are connected by a first screw 8, and the first connecting block 6 is placed in the first groove 7 through the coordination of the first connecting block 6 and the first groove 7, so that when the first connecting block 6 is placed in the first groove 7, the first main screw hole and the first secondary screw hole will be aligned, so as to facilitate tightening the first screw 8; a first reinforcing rib 9 fixedly connected to the first connecting block 6 is provided on the upper part of the first supporting leg 2 to increase the firmness of the first supporting leg 2;

[0029] The second supporting legs 3 are provided with two and are symmetrically arranged, a second connecting block 10 is fixedly connected between the tops of the two second supporting legs 3, a second groove 11 adapted to the second connecting block 10 is provided at the bottom of the base frame 1, a second main screw hole is provided on the second connecting block 10, a second secondary screw hole corresponding to the second main screw hole is provided in the second groove 11, the second main screw hole and the second secondary screw hole are connected by a second screw 12, and the second connecting block 10 and the second groove 11 are matched to each other, so that when the second connecting block 10 is placed in the second groove 11, the second main screw hole and the second secondary screw hole will be aligned, so that the second screw 12 is convenient to tighten; the upper part of the second supporting leg 3 is provided with a second reinforcing rib 13 fixedly connected to the second connecting block 10, so as to increase the firmness of the second supporting leg 3;

[0030] The bottom of the first supporting foot 2 and the second supporting foot 3 are both provided with an inner screw hole 26, and a screw rod 27 is connected to the inner thread of the inner screw hole 26, and a nut 28 is fixedly connected to the end of the screw rod 27 away from the inner screw hole 26, and a foot pad 29 is fixedly connected to the side of the nut 28 away from the screw rod 27. The nut 28 can be screwed with a wrench, and the screw rod 27 can be moved in the inner screw hole 26 to adjust the first supporting foot 2 and the second supporting foot 3. The base frame 1 is kept in a horizontal state relative to the pump core, which is convenient for extracting or inserting the pump core;

[0031] The third supporting legs 4 are provided with two and are symmetrically arranged, a third connecting block 14 is fixedly connected between the tops of the two third supporting legs 4, a third groove 15 adapted to the third connecting block 14 is provided at the bottom of the base frame 1, a third main screw hole is provided on the third connecting block 14, a third secondary screw hole corresponding to the third main screw hole is provided in the third groove 15, the third main screw hole and the third secondary screw hole are connected by a third screw 16, and the third connecting block 14 and the third groove 15 are matched to each other when the third connecting block 14 is placed in the third groove 15, so as to facilitate tightening the third screw 16; the upper part of the third supporting leg 4 is provided with a third reinforcing rib 17 fixedly connected to the third connecting block 14, so as to increase the firmness of the third supporting leg 4;

[0032] Two hangers are arranged in sequence along the length direction of the top of the base frame 1, and the hangers include two symmetrically arranged support rods 18, a hanger 19 is fixedly connected between the tops of the two support rods 18, a lifting ear 5 is fixedly connected to the hanger 19, and a manual hoist is hung on the lifting ear 5. The pump core is bound to the manual hoist by using a sling, and then the pump core is lifted and pulled out of the outer pump casing or inserted into the outer pump casing by two manual hoists; a support plate 20 is fixedly connected to the bottom of the support rod 18, a slide groove 21 is arranged at the bottom of the support plate 20, and a slide rod 22 corresponding to the slide groove 21 is arranged on the top of the base frame 1, and the slide groove 21 slides with the slide rod 22 The support plate 20 is connected by a fourth main screw hole, and the top of the slide bar 22 is provided with a plurality of fourth secondary screw holes along its length direction. The fourth main screw hole and the fourth secondary screw hole are connected by a fourth screw 23, and the support plate 20 is prevented from being displaced when subjected to a force along the width direction of the base frame 1 by sliding on the slide bar 22 through the slide groove 21, so as to facilitate the alignment of the fourth main screw hole with the fourth secondary screw hole and to facilitate the tightening of the fourth screw 23; the upper and lower parts of the support rod 18 are respectively provided with a fourth reinforcing rib 24 and a fifth reinforcing rib 25 fixedly connected to the suspension rod 19 and the support plate 20, which respectively increase the firmness of the suspension rod 19 and the support rod 18.

[0033] Working principle:

[0034] like Figure 1-3As shown, when the auxiliary tooling is used, first assemble a supporting foot 2, a second supporting foot 3, a third supporting foot 4 and two hangers with the base frame 1 in sequence. After the assembly is completed, the base frame 1 is supported by the foot pads 29 of the first supporting foot 2 and the second supporting foot 3 in contact with the ground, and the third supporting foot 4 in contact with the base of the centrifugal pump. Then, the nut 28 is tightened with a wrench, and the adjusting screw 27 is moved in the inner screw hole 26 to raise or lower the first supporting foot 2 and the second supporting foot 3 so that the base frame 1 remains horizontal relative to the pump core. Then, the manual hoist is hung on the lifting ear 5 of the hanger, and the pump core is bound to the manual hoist by using a sling. Then, the pump core is lifted by the two manual hoists and pulled out or inserted into the outer pump casing.

[0035] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A centrifugal pump core disassembly and assembly auxiliary tool, comprising a base frame (1), characterized in that: The bottom of the base frame (1) is provided with a first supporting leg (2), a second supporting leg (3) and a third supporting leg (4) which are detachable in sequence along the length direction thereof; the height of the first supporting leg (2) is the same as the height of the second supporting leg (3) and is greater than the height of the third supporting leg (4); the top of the base frame (1) is provided with two hangers with adjustable distances which are detachable in sequence along the length direction thereof; a lifting lug (5) is provided at the top of the hanger, and a manual hoist is hung on the lifting lug (5).

2. The pump core disassembly and assembly auxiliary tooling of a centrifugal pump according to claim 1, characterized in that: Two first supporting legs (2) are provided and are symmetrically arranged. A first connecting block (6) is fixedly connected between the tops of the two first supporting legs (2). A first groove (7) adapted to the first connecting block (6) is provided at the bottom of the base frame (1). A first main screw hole is provided on the first connecting block (6). A first secondary screw hole corresponding to the first main screw hole is provided in the first groove (7). The first main screw hole and the first secondary screw hole are connected by a first screw (8).

3. The pump core disassembly and assembly auxiliary tooling of a centrifugal pump according to claim 2, characterized in that: The upper part of the first supporting leg (2) is provided with a first reinforcing rib (9) fixedly connected to the first connecting block (6).

4. The pump core disassembly and assembly auxiliary tooling of a centrifugal pump according to claim 1, characterized in that: Two second supporting legs (3) are provided and are symmetrically arranged, a second connecting block (10) is fixedly connected between the tops of the two second supporting legs (3), a second groove (11) adapted to the second connecting block (10) is provided at the bottom of the base frame (1), a second main screw hole is provided on the second connecting block (10), a second secondary screw hole corresponding to the second main screw hole is provided in the second groove (11), and the second main screw hole and the second secondary screw hole are connected by a second screw (12).

5. The pump core disassembly and assembly auxiliary tooling of a centrifugal pump according to claim 4, characterized in that: The upper part of the second supporting leg (3) is provided with a second reinforcing rib (13) fixedly connected to the second connecting block (10).

6. The pump core disassembly and assembly auxiliary tooling of a centrifugal pump according to claim 1, characterized in that: Two third supporting legs (4) are provided and are symmetrically arranged. A third connecting block (14) is fixedly connected between the tops of the two third supporting legs (4). A third groove (15) adapted to the third connecting block (14) is provided at the bottom of the base frame (1). A third main screw hole is provided on the third connecting block (14). A third secondary screw hole corresponding to the third main screw hole is provided in the third groove (15). The third main screw hole and the third secondary screw hole are connected by a third screw (16).

7. The pump core disassembly and assembly auxiliary tooling of a centrifugal pump according to claim 6, characterized in that: The upper part of the third supporting leg (4) is provided with a third reinforcing rib (17) fixedly connected to the third connecting block (14).

8. The pump core disassembly and assembly auxiliary tooling of a centrifugal pump according to claim 1, characterized in that: The hanger comprises two symmetrically arranged support rods (18), a hanger rod (19) is fixedly connected between the tops of the two support rods (18), a hanger ear (5) is fixedly connected to the hanger rod (19), a support plate (20) is fixedly connected to the bottom of the support rod (18), a slide groove (21) is provided at the bottom of the support plate (20), a slide rod (22) corresponding to the slide groove (21) is provided at the top of the base frame (1), the slide groove (21) and the slide rod (22) are slidably connected, a fourth main screw hole is provided on the support plate (20), a plurality of fourth secondary screw holes are provided at the top of the slide rod (22) along its length direction, and the fourth main screw hole and the fourth secondary screw hole are connected by a fourth screw (23).

9. The pump core disassembly and assembly auxiliary tooling of a centrifugal pump according to claim 8, characterized in that: The upper part and the lower part of the support rod (18) are respectively provided with a fourth reinforcing rib (24) and a fifth reinforcing rib (25) which are fixedly connected to the suspension rod (19) and the support plate (20).

10. The pump core disassembly and assembly auxiliary tool for a centrifugal pump according to claim 1, characterized in that: The bottom of the first supporting leg (2) and the bottom of the second supporting leg (3) are both provided with an internal screw hole (26), a screw rod (27) is internally threadedly connected to the internal screw hole (26), a nut (28) is fixedly connected to one end of the screw rod (27) away from the internal screw hole (26), and a foot pad (29) is fixedly connected to one side of the nut (28) away from the screw rod (27).

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