Connecting structure between shafts of long-shaft deep-well pump

Abstract

The utility model discloses a connecting structure between shafts of a long-shaft deep-well pump, which comprises a long shaft a and a long shaft b, a coupling is connected between the long shaft a and the long shaft b, connecting convex shafts are welded at the connecting ends of the long shaft a and the long shaft b, a fixing ring component is sleeved outside the two connecting convex shafts, the fixing ring component is positioned inside the coupling, and the long shaft a and the long shaft b are connected through the fixing ring component. The outer side of the coupling is in threaded connection with the long shaft a through a bolt a and in threaded connection with the long shaft b through a bolt b in sequence from top to bottom; the connection structure can be used for quick connection and quick interchange between shafts with large diameters used by a large long-shaft deep-well pump, and is convenient to install and very reliable.

Description

Technical Field

[0001] The utility model belongs to the technical field of long-shaft deep-well pump connection, and specifically relates to a connection structure between shafts of a long-shaft deep-well pump. Background Art

[0002] The connection structure between the long-axis deep-well pump shafts is used for the quick connection between the pump shafts of large-diameter long-axis deep-well pumps. It is easy to install and disassemble and is very reliable.

[0003] Prior art uses threaded couplings to connect shafts in long-shaft deep-well pumps. However, for large-diameter pump shafts, threaded couplings are inconvenient to install, heavy, and laborious to remove. Disassembling an old pump on-site can be difficult and even cause it to become stuck. Summary of the Invention

[0004] In view of the above problems, it is necessary to solve the connection problem between the thick long shafts of large long shaft deep well pumps. The connection structure between the shafts of the long shaft deep well pump of the utility model can effectively solve the connection between the thick long shafts of the large long shaft deep well pump. It is easy to install and disassemble and is very reliable.

[0005] In order to solve the above problems, the technical solution adopted in the embodiment of the present utility model is: the embodiment of the present invention provides a connection structure between the shaft of a long-axis deep-well pump and the shaft, a connection structure between the shaft of a long-axis deep-well pump and the shaft, including a long axis a and a long axis b, a coupling is connected between the long axis a and the long axis b, the connecting ends of the long axis a and the long axis b are welded with connecting cams, the outer sides of the two connecting cams are sleeved with fixing ring assemblies, the fixing ring assembly is located inside the coupling, and the outer side of the coupling is threadedly connected to the long axis a through a bolt a and threadedly connected to the long axis b through a bolt b from top to bottom.

[0006] Preferably, the connecting convex shaft is provided with a thin shaft section and a thick shaft section, wherein the thin shaft is respectively connected to the long axis a and the long axis b, the thick shaft is connected to the thin shaft, and the thick shafts connected to the long axis a and the long axis b are respectively arranged adjacent to each other.

[0007] Preferably, the fixing ring assembly includes a right half ring and a left half ring of the same size, and there is a groove in the middle of the right half ring and the left half ring that matches the thick shaft. The thick shafts connected to the long axis a and the long axis b are both clamped in the middle of the right half ring and the left half ring, wherein long screw holes are opened on both sides of the right half ring, and corresponding short screw holes are opened on the inner side of the left half ring, and a fixing bolt is threadedly connected between the long screw hole and the short screw hole. After the fixing bolt is installed, the inside of the long screw hole is coated with sealing insulating material.

[0008] Preferably, a first keyway is provided on the adjacent sides of the major axis a and the major axis b, and a second keyway is provided on the inner wall of the coupling. The top of the second keyway does not pass through the coupling, but the bottom passes through the coupling. A connecting key is clamped in the first keyway, and the outer side of the connecting key is clamped in the inside of the second keyway on the inner wall of the coupling.

[0009] Preferably, the fixing ring assembly and the coupling are clearance fit, and the connecting key and the keyway are interference fit.

[0010] Compared with the prior art, the connection structure between the shafts of a long-axis deep-well pump in an embodiment of the present invention effectively solves the connection between the thick long shafts of a large long-axis deep-well pump and the long shafts. It is not easy to get stuck, is easy to install and disassemble, and is very reliable. Moreover, through the design of the first keyway, the second keyway and the connecting key, the a bolt and the b bolt can accurately enter the matching bolt hole, making it convenient for connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is an overall schematic diagram of the connection structure between the shafts of a long-axis deep-well pump according to an embodiment of the present utility model;

[0012] Figure 2 This is a cross-sectional schematic diagram of the connection structure between the shafts of a long-axis deep-well pump according to an embodiment of the present utility model;

[0013] Figure 3 This is an exploded view of the connection structure between the shafts of a long-axis deep-well pump according to an embodiment of the present utility model;

[0014] Figure 4 This is an internal cross-sectional view of a coupling according to an embodiment of the present utility model;

[0015] Among them: 1. long axis a; 2. first keyway; 3. coupling; 4. a bolt; 5. fixing ring assembly; 51. right half ring; 52. left half ring; 53. fixing bolt; 6. b bolt; 7. connecting key; 8. long axis b; 9. connecting cam; 10. second keyway. DETAILED DESCRIPTION

[0016] The technical solution of the present utility model is described in detail below with reference to the accompanying drawings.

[0017] The connection structure between shafts of a long-axis deep-well pump according to the embodiment of the utility model can effectively solve the connection between thick long shafts of a large-scale long-axis deep-well pump and the long shafts, and is easy to install and disassemble and very reliable.

[0018] like Figure 1-4As shown, a connection structure between the shafts of a long-axis deep-well pump in an embodiment of the present invention includes a long axis a1 and a long axis b8, a coupling 3 is connected between the long axis a1 and the long axis b8, and connecting cams 9 are welded to the connecting ends of the long axis a1 and the long axis b8. The outer parts of the two connecting cams 9 are sleeved with fixing ring assemblies 5, and the fixing ring assembly 5 is located inside the coupling 3. The outer side of the coupling 3 is threadedly connected to the long axis a1 through a bolt a 4 and threadedly connected to the long axis b8 through a bolt b 6 from top to bottom.

[0019] In this embodiment, the connecting protruding shaft 9 is provided with a thin shaft and a thick shaft, wherein the thin shaft is connected to the long axis a1 and the long axis b8 respectively, and the thick shaft is connected to the thin shaft, and the thick shafts connected to the long axis a1 and the long axis b8 are respectively arranged adjacent to each other.

[0020] In this embodiment, the fixing ring assembly 5 includes a right half ring 51 and a left half ring 52 of the same size. There are grooves in the middle of the right half ring 51 and the left half ring 52 that match the thick shaft. The thick shafts connected to the long axis a1 and the long axis b8 are clamped in the middle of the right half ring 51 and the left half ring 52. Long screw holes are provided on both sides of the right half ring 51, and corresponding short screw holes are provided on the inner side of the left half ring 52. A fixing bolt 53 is threadedly connected between the long screw hole and the short screw hole. After the fixing bolt 53 is installed, a sealing insulating material can be coated on the inside of the long screw hole. Solid butter can be applied to the long screw hole to seal and prevent rust, which is convenient for subsequent disassembly.

[0021] In this embodiment, the first key groove 2 is provided on the adjacent side of the long axis a1 and the long axis b8, and the second key groove 10 is provided on the inner wall of the coupling 3. Figure 2 and Figure 3 As shown, the top portion does not penetrate the coupling 3 , but the bottom portion penetrates the coupling 3 , and a connecting key 7 is clamped in each of the first key grooves 2 , and the outer sides of the connecting keys 7 are clamped in each of the second key grooves 10 on the inner wall of the coupling 3 .

[0022] In this embodiment, the fixing ring assembly 5 and the coupling 3 are clearance fit, and the connecting key 7 and the keyway are interference fit.

[0023] Specific installation steps: During installation, first sleeve the coupling 3 on the outside of the long axis a1 so that the bottom of the coupling 3 is higher than the connecting protrusion 9 at the bottom of the long axis a1, and fix the coupling 3 to the outside of the long axis a1 by tightening the a bolt 4 and the b bolt 6, then align the thick shaft of the connecting protrusion 9 at the bottom of the long axis a1 with the thick shaft of the connecting protrusion 9 at the bottom of the long axis b8, then tighten the fixing bolts 53 on the outside of the right half ring 51 and the left half ring 52, fix the two with the fixing ring assembly 5, and then respectively clamp the two connecting keys 7 into the inside of the first key groove 2, and then loosen the a bolt 4 and the b bolt 6 to place the coupling 3 downward from the outside of the long axis a1 until the connecting key 7 on the long axis a1 is clamped at the top of the second key groove 10. At this time, the coupling 3 is installed in place, and then the coupling 3 can be fixed to the long axis a1 and the long axis b8 respectively by the a bolt 4 and the b bolt 6, and then solid butter can be injected into the bottom of the second key groove 10 to seal its bottom.

[0024] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the specific embodiments described above. The specific embodiments and descriptions in the specification are merely intended to further illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A long-axis deep-well pump shaft-to-shaft connection structure, comprising a long axis a (1) and a long axis b (8), wherein a coupling (3) is connected between the long axis a (1) and the long axis b (8), and characterized in that: The connecting ends of the long shaft a (1) and the long shaft b (8) are both welded with connecting convex shafts (9), and the exterior of the two connecting convex shafts (9) is sleeved with a fixing ring assembly (5), and the fixing ring assembly (5) is located inside the coupling (3). The exterior of the coupling (3) is threadedly connected to the long shaft a (1) via a bolt a (4) and threadedly connected to the long shaft b (8) via a bolt b (6) in sequence from top to bottom.

2. The coupling structure between shafts of a long-axis deep-well pump according to claim 1, characterized in that: The connecting convex shaft (9) includes a thin shaft section and a thick shaft section, wherein the thin shaft is connected to the long axis a (1) and the long axis b (8) respectively, and the thick shaft is connected to the thin shaft, and the thick shafts connected to the long axis a (1) and the long axis b (8) are arranged adjacent to each other.

3. The coupling structure between shafts of a long-axis deep-well pump according to claim 1, characterized in that: The fixing ring assembly (5) comprises a right half ring (51) and a left half ring (52) of the same size, wherein the middle portions of the right half ring (51) and the left half ring (52) are provided with grooves matching the thick shafts, and the thick shafts to which the long axis a (1) and the long axis b (8) are respectively connected are clamped in the middle portions of the right half ring (51) and the left half ring (52), wherein the right half ring (51) is provided with long screw holes extending therethrough on both sides, and the inner side of the left half ring (52) is provided with corresponding short screw holes, and a fixing bolt (53) is threadedly connected between the long screw hole and the short screw hole, and after the fixing bolt (53) is installed, the interior of the long screw hole is coated with a sealing insulating material.

4. The coupling structure between shafts of a long-axis deep-well pump according to claim 1, characterized in that: A first key groove (2) is provided on adjacent sides of the long axis a (1) and the long axis b (8); a second key groove (10) is provided on the inner wall of the coupling (3); the top of the second key groove (10) does not pass through the coupling (3), but the bottom passes through the coupling (3); a connecting key (7) is clamped in the first key groove (2); and the outer side of the connecting key (7) is clamped in the inside of the second key groove (10) on the inner wall of the coupling (3).

5. The coupling structure between shafts of a long-axis deep-well pump according to claim 4, characterized in that: The fixing ring assembly (5) and the coupling (3) are clearance fit, and the connecting key (7) and the keyway are interference fit.

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